/* ===== 1. BASE RESET ===== */
*, *::before, *::after { box-sizing: border-box; }

html { font-size: 16px; scroll-behavior: smooth; }

body {
    margin: 0;
    min-height: 100vh;
    color: var(--opero-text);
    font-family: var(--opero-font-body, sans-serif);
    line-height: 1.65;
    background:
        radial-gradient(circle at top left, color-mix(in srgb, var(--opero-accent) 22%, transparent) 0, transparent 34%),
        radial-gradient(circle at top right, color-mix(in srgb, var(--opero-primary) 16%, transparent) 0, transparent 28%),
        linear-gradient(180deg, color-mix(in srgb, var(--opero-background) 86%, white) 0%, var(--opero-background) 100%);
}

img, video, svg { display: block; max-width: 100%; }

a { color: var(--opero-primary); text-decoration: none; }
a:hover { opacity: 0.8; }

ul, ol { padding-left: 1.25rem; }

p { margin: 0 0 var(--space-4); }
p:last-child { margin-bottom: 0; }

:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--opero-accent) 70%, transparent);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* ===== 2. TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    margin: 0 0 0.5em;
    font-family: var(--opero-font-display, serif);
    line-height: 1.05;
    letter-spacing: -0.03em;
    color: var(--opero-text);
}

h1 { font-size: clamp(1.8rem, 3vw, 2.4rem); }
h2 { font-size: clamp(1.4rem, 2.5vw, 1.8rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); }
h4 { font-size: clamp(1rem, 1.5vw, 1.15rem); }
h5 { font-size: 1rem; }
h6 { font-size: 0.88rem; }

.opero-display {
    font-family: var(--opero-font-display);
    font-size: clamp(2rem, 5vw, 3.8rem);
    letter-spacing: -0.04em;
    line-height: 1;
    margin: 0;
}

.opero-kicker {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-weight: 700;
    color: var(--opero-text-soft);
    margin: 0 0 var(--space-3);
}

.opero-lead {
    font-size: 1.08rem;
    color: var(--opero-text-soft);
    line-height: 1.7;
    margin: 0;
    max-width: 60ch;
}

.opero-muted { color: var(--opero-text-muted); font-size: 0.88rem; }
.opero-label { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.09em; color: var(--opero-text-muted); }
.opero-caption { font-size: 0.78rem; color: var(--opero-text-muted); }

.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* ===== 3. LAYOUT - CONTAINERS ===== */
.opero-container {
    width: min(var(--opero-container-max, 1280px), calc(100% - var(--space-8)));
    margin-inline: auto;
}

.opero-container--sm { width: min(860px, calc(100% - var(--space-8))); margin-inline: auto; }
.opero-container--md { width: min(1080px, calc(100% - var(--space-8))); margin-inline: auto; }
.opero-container--lg { width: min(var(--opero-container-wide-max, 1480px), calc(100% - var(--space-8))); margin-inline: auto; }
.opero-container--full { width: calc(100% - var(--space-8)); margin-inline: auto; }

.opero-section { padding: var(--space-12) 0; }
.opero-section--sm { padding: var(--space-6) 0; }
.opero-section--lg { padding: var(--space-20) 0; }

/* ===== 4. LAYOUT - GRID SYSTEM ===== */
.opero-grid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--space-4);
}

.grid {
    display: grid;
}

.span-1 { grid-column: span 1; }
.span-2 { grid-column: span 2; }
.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }
.span-8 { grid-column: span 8; }
.span-9 { grid-column: span 9; }
.span-10 { grid-column: span 10; }
.span-11 { grid-column: span 11; }
.span-12 { grid-column: span 12; }
.span-full { grid-column: 1 / -1; }

.row-span-2 { grid-row: span 2; }
.row-span-3 { grid-row: span 3; }

.gap-0 { gap: 0; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-5 { gap: var(--space-5); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }
.gap-10 { gap: var(--space-10); }
.gap-12 { gap: var(--space-12); }

.opero-collection-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: var(--space-4); }
.opero-detail-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.82fr); gap: var(--space-4); align-items: start; }
.opero-sidebar-layout { display: grid; grid-template-columns: minmax(240px, 300px) minmax(0, 1fr); gap: var(--space-4); align-items: start; }
.opero-hero-grid { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(260px, 0.85fr); gap: var(--space-4); align-items: stretch; }

/* ===== 5. LAYOUT - FLEX UTILITIES ===== */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }

.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.items-stretch { align-items: stretch; }
.items-baseline { align-items: baseline; }

.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }

.flex-1 { flex: 1 1 0%; }
.flex-auto { flex: 1 1 auto; }
.flex-none { flex: none; }
.shrink-0 { flex-shrink: 0; }
.grow { flex-grow: 1; }
.min-w-0 { min-width: 0; }

/* ===== 5.5 RESPONSIVE & SPACING UTILITIES ===== */
/* Display & Visibility */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }
.d-grid { display: grid !important; }

/* Spacing Tokens */
.m-0 { margin: 0; } .p-0 { padding: 0; }
.mt-0 { margin-top: 0; } .pt-0 { padding-top: 0; }
.mb-0 { margin-bottom: 0; } .pb-0 { padding-bottom: 0; }

.m-2 { margin: var(--space-2); } .p-2 { padding: var(--space-2); }
.mt-2 { margin-top: var(--space-2); } .pt-2 { padding-top: var(--space-2); }
.mb-2 { margin-bottom: var(--space-2); } .pb-2 { padding-bottom: var(--space-2); }

.m-4 { margin: var(--space-4); } .p-4 { padding: var(--space-4); }
.mt-4 { margin-top: var(--space-4); } .pt-4 { padding-top: var(--space-4); }
.mb-4 { margin-bottom: var(--space-4); } .pb-4 { padding-bottom: var(--space-4); }

.m-6 { margin: var(--space-6); } .p-6 { padding: var(--space-6); }
.mt-6 { margin-top: var(--space-6); } .pt-6 { padding-top: var(--space-6); }
.mb-6 { margin-bottom: var(--space-6); } .pb-6 { padding-bottom: var(--space-6); }

.m-8 { margin: var(--space-8); } .p-8 { padding: var(--space-8); }
.mt-8 { margin-top: var(--space-8); } .pt-8 { padding-top: var(--space-8); }
.mb-8 { margin-bottom: var(--space-8); } .pb-8 { padding-bottom: var(--space-8); }

.m-12 { margin: var(--space-12); } .p-12 { padding: var(--space-12); }
.mt-12 { margin-top: var(--space-12); } .pt-12 { padding-top: var(--space-12); }
.mb-12 { margin-bottom: var(--space-12); } .pb-12 { padding-bottom: var(--space-12); }

/* === ADAPTIVE: Orientation === */
@media (orientation: portrait) {
    .pt\:d-none { display: none !important; }
    .pt\:d-block { display: block !important; }
    .pt\:d-flex { display: flex !important; }
    .pt\:span-1  { grid-column: span 1; }
    .pt\:span-2  { grid-column: span 2; }
    .pt\:span-3  { grid-column: span 3; }
    .pt\:span-4  { grid-column: span 4; }
    .pt\:span-5  { grid-column: span 5; }
    .pt\:span-6  { grid-column: span 6; }
    .pt\:span-7  { grid-column: span 7; }
    .pt\:span-8  { grid-column: span 8; }
    .pt\:span-9  { grid-column: span 9; }
    .pt\:span-10 { grid-column: span 10; }
    .pt\:span-11 { grid-column: span 11; }
    .pt\:span-12 { grid-column: span 12; }
}

@media (orientation: landscape) {
    .ls\:d-none { display: none !important; }
    .ls\:d-block { display: block !important; }
    .ls\:d-flex { display: flex !important; }
    .ls\:span-1  { grid-column: span 1; }
    .ls\:span-2  { grid-column: span 2; }
    .ls\:span-3  { grid-column: span 3; }
    .ls\:span-4  { grid-column: span 4; }
    .ls\:span-5  { grid-column: span 5; }
    .ls\:span-6  { grid-column: span 6; }
    .ls\:span-7  { grid-column: span 7; }
    .ls\:span-8  { grid-column: span 8; }
    .ls\:span-9  { grid-column: span 9; }
    .ls\:span-10 { grid-column: span 10; }
    .ls\:span-11 { grid-column: span 11; }
    .ls\:span-12 { grid-column: span 12; }
}

/* === ADAPTIVE: Interaction === */
@media (hover: none) and (pointer: coarse) {
    .touch\:d-none { display: none !important; }
    .touch\:d-block { display: block !important; }
    .touch\:d-flex { display: flex !important; }
    .touch\:span-6  { grid-column: span 6; }
    .touch\:span-12 { grid-column: span 12; }
}

@media (hover: hover) and (pointer: fine) {
    .mouse\:d-none { display: none !important; }
    .mouse\:d-block { display: block !important; }
    .mouse\:d-flex { display: flex !important; }
    .mouse\:span-6  { grid-column: span 6; }
    .mouse\:span-12 { grid-column: span 12; }
}

/* SM Breakpoint (640px+) Utilities */
@media (min-width: 640px) {
    .sm\:d-none { display: none !important; }
    .sm\:d-block { display: block !important; }
    .sm\:d-flex { display: flex !important; }
    .sm\:d-grid { display: grid !important; }

    .sm\:flex-row { flex-direction: row; }
    .sm\:flex-col { flex-direction: column; }
    .sm\:items-center { align-items: center; }
    .sm\:items-start { align-items: flex-start; }

}

/* MD Breakpoint (768px+) Utilities */
@media (min-width: 768px) {
    .md\:d-none { display: none !important; }
    .md\:d-block { display: block !important; }
    .md\:d-flex { display: flex !important; }
    .md\:d-grid { display: grid !important; }
    
    .md\:flex-row { flex-direction: row; }
    .md\:flex-col { flex-direction: column; }
    .md\:items-center { align-items: center; }
    .md\:items-start { align-items: flex-start; }
    
    .md\:span-1 { grid-column: span 1; }
    .md\:span-2 { grid-column: span 2; }
    .md\:span-3 { grid-column: span 3; }
    .md\:span-4 { grid-column: span 4; }
    .md\:span-5 { grid-column: span 5; }
    .md\:span-6 { grid-column: span 6; }
    .md\:span-7 { grid-column: span 7; }
    .md\:span-8 { grid-column: span 8; }
    .md\:span-9 { grid-column: span 9; }
    .md\:span-10 { grid-column: span 10; }
    .md\:span-11 { grid-column: span 11; }
    .md\:span-12 { grid-column: span 12; }
}

/* LG Breakpoint (1024px+) Utilities */
@media (min-width: 1024px) {
    .lg\:d-none { display: none !important; }
    .lg\:d-block { display: block !important; }
    .lg\:d-flex { display: flex !important; }
    .lg\:d-grid { display: grid !important; }
    
    .lg\:span-1 { grid-column: span 1; }
    .lg\:span-2 { grid-column: span 2; }
    .lg\:span-3 { grid-column: span 3; }
    .lg\:span-4 { grid-column: span 4; }
    .lg\:span-5 { grid-column: span 5; }
    .lg\:span-6 { grid-column: span 6; }
    .lg\:span-7 { grid-column: span 7; }
    .lg\:span-8 { grid-column: span 8; }
    .lg\:span-9 { grid-column: span 9; }
    .lg\:span-10 { grid-column: span 10; }
    .lg\:span-11 { grid-column: span 11; }
    .lg\:span-12 { grid-column: span 12; }
}

/* XL Breakpoint (1280px+) Utilities */
@media (min-width: 1280px) {
    .xl\:d-none { display: none !important; }
    .xl\:d-block { display: block !important; }
    .xl\:d-flex { display: flex !important; }
    .xl\:d-grid { display: grid !important; }

    .xl\:flex-row { flex-direction: row; }
    .xl\:flex-col { flex-direction: column; }
    .xl\:items-center { align-items: center; }
    .xl\:items-start { align-items: flex-start; }

}

/* ===== 6. LAYOUT - COMPOSITION PATTERNS ===== */
.opero-stack { display: grid; gap: var(--space-4); }
.opero-stack--sm { gap: var(--space-2); }
.opero-stack--lg { gap: var(--space-6); }

.opero-cluster {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-3);
}

.opero-split {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.opero-rail {
    display: grid;
    gap: var(--space-4);
    align-content: start;
}

.opero-documents { display: grid; gap: var(--space-3); }

.opero-social-list {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-3);
}

.opero-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--opero-text-muted);
}

.opero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-3);
}

.opero-pill-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2);
}

.opero-page {
    display: grid;
    gap: var(--space-6);
    padding: var(--space-5) 0 var(--space-12);
    width: min(1280px, calc(100% - var(--space-8)));
    margin-inline: auto;
}

.opero-hero {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
    align-items: stretch;
}
@media (min-width: 960px) {
    .opero-hero {
        grid-template-columns: minmax(0, 1.3fr) minmax(260px, 0.8fr);
        gap: var(--space-8);
    }
}

.opero-spotlight {
    border: 1px solid color-mix(in srgb, var(--opero-text) 10%, transparent);
    background: color-mix(in srgb, var(--opero-surface) 82%, white);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
}

.hero-logo-float {
    display: grid;
    place-items: center;
    align-content: center;
    min-height: 100%;
}

.hero-logo-float .hero-logo-card__image {
    width: min(280px, 72%);
    filter: drop-shadow(0 22px 34px color-mix(in srgb, var(--opero-primary) 20%, transparent));
    transition: transform 260ms ease;
}

.hero-logo-float .hero-logo-card__image:hover {
    transform: translateY(-4px);
}

.section-copy--editorial {
    width: min(800px, 100%);
    margin-inline: auto;
}

.opero-list-group {
    list-style: none !important;
    margin: 0;
    padding: 0;
    display: grid;
    gap: var(--space-5);
    counter-reset: opero-step;
}

.opero-list-item {
    counter-increment: opero-step;
    display: grid;
    grid-template-columns: minmax(80px, auto) 1fr;
    gap: var(--space-6);
    align-items: center;
    border: 1px solid color-mix(in srgb, var(--opero-text) 8%, transparent);
    background: color-mix(in srgb, var(--opero-surface) 90%, white);
    backdrop-filter: blur(12px);
    border-radius: 28px;
    padding: var(--space-6) var(--space-8);
    box-shadow: 0 12px 32px rgba(153, 99, 22, 0.05);
    transition: transform 300ms cubic-bezier(0.16, 1, 0.3, 1), box-shadow 300ms cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

.opero-list-item:hover {
    transform: translateY(-4px) scale(1.005);
    box-shadow: 0 20px 42px rgba(153, 99, 22, 0.12);
}

.opero-list-item::before {
    content: counter(opero-step, decimal-leading-zero);
    font-family: var(--font-display, var(--opero-font-display, serif));
    font-size: clamp(3rem, 6vw, 4.2rem);
    line-height: 0.8;
    color: var(--brand, var(--opero-primary));
    opacity: 0.15;
    font-weight: 700;
    letter-spacing: -0.04em;
    display: block;
    margin-top: -4px;
}

.opero-list-item h3 {
    margin: 0 0 var(--space-1);
    font-size: 1.4rem;
    font-weight: 700;
}

.opero-list-item p {
    margin: 0;
    font-size: 1.05rem;
    color: var(--opero-text-soft);
}

.opero-richtext {
    line-height: 1.75;
    color: var(--opero-text-soft);
}

.opero-richtext p { margin: 0 0 1em; }
.opero-richtext p:last-child { margin-bottom: 0; }
.opero-richtext h2, .opero-richtext h3 { margin: 1.4em 0 0.5em; }
.opero-richtext ul, .opero-richtext ol { padding-left: 1.4rem; }
.opero-richtext li { margin-bottom: 0.4em; }
.opero-richtext a { color: var(--opero-primary); text-decoration: underline; }
.opero-richtext blockquote { border-left: 3px solid var(--opero-accent); padding-left: var(--space-4); color: var(--opero-text-soft); margin: 1em 0; }

.opero-pin-top-right { position: absolute; top: var(--space-3); right: var(--space-3); }
.opero-pin-top-left { position: absolute; top: var(--space-3); left: var(--space-3); }

/* ===== 7. SHELL & NAVIGATION ===== */
.shell, .opero-admin-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 268px 1fr;
}

.shell.sidebar-collapsed,
.opero-admin-shell.sidebar-collapsed {
    grid-template-columns: 96px 1fr;
}

.main, .opero-admin-main {
    padding: var(--space-4);
    position: relative;
    z-index: 1;
    min-width: 0;
}

.sidebar {
    border-right: 1px solid color-mix(in srgb, var(--opero-text) 16%, transparent);
    background: linear-gradient(
        180deg,
        color-mix(in srgb, var(--opero-background) 96%, white),
        color-mix(in srgb, var(--opero-background) 84%, var(--opero-accent)) 44%,
        color-mix(in srgb, var(--opero-accent) 62%, var(--opero-secondary))
    );
    color: color-mix(in srgb, var(--opero-text) 90%, var(--opero-primary));
    padding: var(--space-4) calc(var(--space-4) - 4px);
    position: sticky;
    top: 0;
    z-index: 20;
    height: 100vh;
    overflow-y: auto;
    overflow-x: visible;
}

.sidebar-head { padding: var(--space-2) var(--space-1) var(--space-4); }
.brand { display: flex; align-items: center; justify-content: center; width: 100%; min-width: 0; }
.brand-logo { display: block; width: 108px; height: auto; object-fit: contain; margin: 0 auto; }

.nav-section { margin-top: var(--space-2); position: relative; }

.nav-item,
.nav-section-header {
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-align: left;
    border: 1px solid color-mix(in srgb, var(--opero-text) 14%, transparent);
    border-radius: var(--radius-md);
    background: color-mix(in srgb, var(--opero-surface) 90%, white);
    color: color-mix(in srgb, var(--opero-text) 88%, var(--opero-primary));
    padding: calc(var(--space-2) + 2px) calc(var(--space-2) + 4px);
    cursor: pointer;
    font: inherit;
    box-shadow: var(--shadow-sm);
    transition: transform 180ms ease, background 180ms ease, color 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.nav-section-header {
    text-transform: uppercase;
    letter-spacing: 0.11em;
    font-size: 0.75rem;
    font-weight: 700;
}

.nav-item:hover,
.nav-item:focus-visible,
.nav-section-header:hover,
.nav-section-header:focus-visible,
.nav-item.is-active,
.nav-section.is-active-parent > .nav-section-header,
.nav-section.is-open > .nav-section-header,
.nav-section-items .nav-item.is-active {
    transform: translateY(-1px);
    background: linear-gradient(135deg,
        color-mix(in srgb, var(--opero-secondary) 70%, white),
        color-mix(in srgb, var(--opero-primary) 86%, var(--opero-secondary))
    );
    color: white;
    border-color: color-mix(in srgb, var(--opero-primary) 82%, var(--opero-accent));
    box-shadow: var(--shadow-md);
}

.nav-section-items {
    display: grid;
    gap: var(--space-1);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-4px);
    margin: var(--space-1) 0 0 var(--space-2);
    padding: 0 0 0 var(--space-2);
    border-left: 1px solid color-mix(in srgb, var(--opero-text) 20%, transparent);
    transition: max-height 0.22s ease, opacity 0.18s ease, transform 0.2s ease;
}

.nav-section.is-open > .nav-section-items {
    max-height: 800px;
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
    padding-top: var(--space-1);
    padding-bottom: var(--space-1);
}

.nav-section-items .nav-item {
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    padding: calc(var(--space-2) - 2px) calc(var(--space-2) + 2px);
}

.nav-chevron { margin-left: auto; font-size: 0.58rem; transition: transform 0.2s ease; }
.nav-section.is-open > .nav-section-header .nav-chevron { transform: rotate(180deg); }

.sidebar-toggle {
    position: absolute;
    bottom: var(--space-4);
    right: calc(-0.95rem - 1px);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 0.95rem;
    height: 2.05rem;
    background: linear-gradient(180deg,
        color-mix(in srgb, var(--opero-background) 96%, white),
        color-mix(in srgb, var(--opero-accent) 62%, var(--opero-secondary))
    );
    border: 1px solid color-mix(in srgb, var(--opero-accent) 80%, transparent);
    border-left: 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 0;
    cursor: pointer;
    color: color-mix(in srgb, var(--opero-text) 80%, var(--opero-primary));
    min-width: 0;
    z-index: 160;
    box-shadow: var(--shadow-sm);
    transition: background 0.16s, color 0.16s;
}

.sidebar-toggle:hover {
    background: linear-gradient(180deg, var(--opero-secondary), var(--opero-primary));
    color: white;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-4);
    border: 1px solid color-mix(in srgb, var(--opero-text) 10%, transparent);
    background: color-mix(in srgb, var(--opero-surface) 82%, white);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-xl);
    padding: var(--space-4) calc(var(--space-4) + 4px);
    margin-bottom: var(--space-4);
}

.topbar-left { display: flex; flex-direction: column; gap: var(--space-1); min-width: 0; }
.topbar-right { display: flex; align-items: center; flex-wrap: wrap; gap: var(--space-2); }

.breadcrumbs {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.09em;
    color: var(--opero-text-muted);
    margin: 0;
}

.page-title {
    margin: 0;
    font: 600 clamp(1.4rem, 2.8vw, 2.2rem)/1.05 var(--opero-font-display, serif);
    letter-spacing: -0.04em;
    color: var(--opero-text);
}

/* ===== 8. COMPONENTS - PANELS & CARDS ===== */
.panel,
.card,
.opero-panel,
.opero-card,
.opero-box,
.sub-panel,
.modal-card,
.docs-nav-card,
.docs-content-card {
    border: 1px solid color-mix(in srgb, var(--opero-text) 10%, transparent);
    background: color-mix(in srgb, var(--opero-surface) 82%, white);
    backdrop-filter: blur(16px);
    box-shadow: var(--opero-shadow-base, var(--shadow-md));
    border-radius: var(--opero-panel-radius, var(--radius-xl));
    padding: var(--space-5);
}

.panel-sm, .opero-panel--sm { padding: var(--space-3); border-radius: var(--opero-panel-radius, var(--radius-lg)); }
.panel-lg, .opero-panel--lg { padding: var(--space-8); }

.panel-head { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); margin-bottom: var(--space-4); }
.panel-head h2, .panel-head h3 { margin: 0; }

.sub-panel { background: color-mix(in srgb, var(--opero-surface) 92%, white); border-radius: var(--opero-panel-radius, var(--radius-lg)); }

.opero-card { overflow: hidden; padding: 0; transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease; }
.opero-card:hover, .opero-card:focus-within {
    transform: translateY(-2px);
    box-shadow: var(--opero-shadow-hover, var(--shadow-xl));
    border-color: color-mix(in srgb, var(--opero-primary) 28%, transparent);
}

.opero-card-media { position: relative; overflow: hidden; aspect-ratio: 4/5; background: color-mix(in srgb, var(--opero-accent) 20%, var(--opero-surface)); }
.opero-card-media img { width: 100%; height: 100%; object-fit: cover; }
.opero-card-body { display: grid; gap: var(--space-3); padding: var(--space-4); }
.opero-card-body p, .opero-card-copy { margin: 0; color: var(--opero-text-soft); }

.opero-media-frame {
    position: relative;
    overflow: hidden;
    border: 1px solid color-mix(in srgb, var(--opero-text) 10%, transparent);
    border-radius: var(--opero-panel-radius, var(--radius-xl));
    background: color-mix(in srgb, var(--opero-surface) 88%, var(--opero-background));
}

.opero-media-frame img { width: 100%; height: 100%; object-fit: cover; }

.opero-box {
    display: grid;
    gap: var(--space-3);
    padding: var(--space-4);
    border-radius: var(--opero-panel-radius, var(--radius-xl));
    border: 1px solid color-mix(in srgb, var(--opero-text) 8%, transparent);
    background: color-mix(in srgb, var(--opero-surface) 70%, transparent);
}

.opero-definition-list { display: grid; gap: var(--space-3); }
.opero-definition-list div { display: grid; gap: var(--space-1); }
.opero-definition-list dt { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--opero-text-muted); }
.opero-definition-list dd { margin: 0; }

/* ===== 9. COMPONENTS - BUTTONS & PILLS ===== */
.btn, a.btn, button.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    min-width: 0;
    padding: calc(var(--space-3) - 1px) var(--space-5);
    border-radius: var(--opero-btn-radius, var(--radius-pill));
    border: 1px solid var(--opero-btn-border, transparent);
    background: var(--opero-btn-bg, linear-gradient(135deg, color-mix(in srgb, var(--opero-primary) 92%, white), var(--opero-secondary)));
    color: var(--opero-btn-text, white);
    font: 600 0.92rem/1 var(--opero-font-body, sans-serif);
    box-shadow: var(--opero-btn-shadow, var(--opero-shadow-base, var(--shadow-md)));
    cursor: pointer;
    text-decoration: none;
    transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
    white-space: nowrap;
}

.btn:hover, .btn:focus-visible {
    transform: translateY(-2px);
    background: var(--opero-btn-bg-hover, var(--opero-btn-bg, linear-gradient(135deg, color-mix(in srgb, var(--opero-primary) 92%, white), var(--opero-secondary))));
    box-shadow: var(--opero-btn-shadow-hover, var(--opero-shadow-hover, var(--shadow-lg)));
}
.btn:active { transform: translateY(0); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: 0.45; cursor: not-allowed; pointer-events: none; }

.btn-xs { padding: var(--space-1) var(--space-3); font-size: 0.78rem; }
.btn-sm { padding: var(--space-2) var(--space-3); font-size: 0.85rem; }
.btn-lg { padding: var(--space-4) var(--space-6); font-size: 1.02rem; }
.btn-xl { padding: var(--space-4) var(--space-8); font-size: 1.1rem; }

.btn-secondary {
    background: linear-gradient(135deg, color-mix(in srgb, var(--opero-secondary) 92%, white), var(--opero-primary));
    box-shadow: var(--shadow-md);
}

.btn-dark {
    background: linear-gradient(
        135deg,
        color-mix(in srgb, var(--opero-text) 80%, black),
        color-mix(in srgb, var(--opero-primary) 44%, black)
    );
    box-shadow: var(--shadow-md);
}

.btn-muted {
    background: color-mix(in srgb, var(--opero-surface) 90%, white);
    border-color: color-mix(in srgb, var(--opero-text) 14%, transparent);
    color: var(--opero-text-soft);
    box-shadow: none;
}

.btn-outline {
    background: transparent;
    border-color: color-mix(in srgb, var(--opero-primary) 60%, transparent);
    color: var(--opero-primary);
    box-shadow: none;
}

.btn-danger {
    background: linear-gradient(135deg, var(--color-danger), color-mix(in srgb, var(--color-danger) 72%, black));
    box-shadow: var(--shadow-md);
}

.btn-success {
    background: linear-gradient(135deg, var(--color-success), color-mix(in srgb, var(--color-success) 72%, black));
    box-shadow: var(--shadow-md);
}

.btn-full { width: 100%; }
.btn-icon { min-width: 2.4rem; width: 2.4rem; height: 2.4rem; padding: 0; border-radius: var(--opero-btn-radius, var(--radius-pill)); }
.btn-icon.btn-sm { min-width: 2rem; width: 2rem; height: 2rem; }

.opero-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-pill);
    border: 1px solid color-mix(in srgb, var(--opero-text) 12%, transparent);
    background: color-mix(in srgb, var(--opero-surface) 88%, white);
    color: var(--opero-text-soft);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: transform 180ms ease, background 180ms ease, color 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.opero-pill:hover {
    transform: translateY(-1px);
    background: color-mix(in srgb, var(--opero-primary) 10%, white);
    color: var(--opero-primary);
    border-color: color-mix(in srgb, var(--opero-primary) 30%, transparent);
}

.opero-pill.is-active {
    background: linear-gradient(135deg, color-mix(in srgb, var(--opero-primary) 92%, white), var(--opero-secondary));
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-md);
}

.opero-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: calc(var(--space-2) + 2px) var(--space-4);
    border-radius: var(--opero-btn-radius, var(--radius-pill));
    border: 1px solid var(--opero-btn-border, color-mix(in srgb, var(--opero-text) 12%, transparent));
    background: var(--opero-btn-bg, color-mix(in srgb, var(--opero-surface) 88%, white));
    color: var(--opero-btn-text, var(--opero-text-soft));
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: transform 180ms ease, background 180ms ease, color 180ms ease, box-shadow 180ms ease;
    box-shadow: var(--opero-btn-shadow, none);
}

.opero-button--nowrap {
    white-space: nowrap;
}

.opero-button:hover {
    transform: translateY(-2px);
    background: var(--opero-btn-bg-hover, color-mix(in srgb, var(--opero-primary) 10%, white));
    color: var(--opero-btn-text, var(--opero-primary));
    box-shadow: var(--opero-btn-shadow-hover, var(--opero-shadow-hover, none));
}

.opero-button--primary {
    background: var(--opero-btn-bg, linear-gradient(135deg, color-mix(in srgb, var(--opero-primary) 92%, white), var(--opero-secondary)));
    color: var(--opero-btn-text, white);
    border-color: var(--opero-btn-border, transparent);
    box-shadow: var(--opero-btn-shadow, var(--opero-shadow-base, var(--shadow-md)));
}

.opero-button--primary:hover {
    background: var(--opero-btn-bg-hover, linear-gradient(
        135deg,
        color-mix(in srgb, var(--opero-primary) 98%, white),
        color-mix(in srgb, var(--opero-secondary) 95%, white)
    ));
    color: var(--opero-btn-text, white);
    box-shadow: var(--opero-btn-shadow-hover, var(--opero-shadow-hover, var(--shadow-lg)));
}

.opero-button--primary-alt {
    background: color-mix(in srgb, var(--opero-primary) 10%, var(--opero-surface));
    color: var(--opero-primary);
    border-color: color-mix(in srgb, var(--opero-primary) 28%, transparent);
    box-shadow: none;
}

.opero-button--primary-alt:hover {
    background: color-mix(in srgb, var(--opero-primary) 16%, var(--opero-surface));
    color: color-mix(in srgb, var(--opero-primary) 88%, black);
    box-shadow: none;
}

.form-actions-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    align-items: center;
    padding-top: var(--space-4);
    border-top: 1px solid color-mix(in srgb, var(--opero-text) 10%, transparent);
    margin-top: var(--space-4);
}

/* ===== 10. COMPONENTS - FORMS ===== */
label {
    display: grid;
    gap: var(--space-1);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--opero-text);
}

.form-grid { display: grid; gap: var(--space-4); }

input[type='text'],
input[type='email'],
input[type='url'],
input[type='password'],
input[type='search'],
input[type='number'],
input[type='tel'],
input[type='date'],
input[type='time'],
input[type='color'],
textarea,
select,
.opero-input,
.opero-select,
.opero-textarea {
    display: block;
    width: 100%;
    padding: calc(var(--space-2) + 2px) calc(var(--space-3) - 2px);
    border-radius: var(--opero-input-radius, var(--radius-md));
    border: var(--opero-input-border, 1px solid color-mix(in srgb, var(--opero-text) 16%, transparent));
    border-bottom: var(--opero-input-border-bottom, var(--opero-input-border, 1px solid color-mix(in srgb, var(--opero-text) 16%, transparent)));
    background: var(--opero-input-bg, color-mix(in srgb, var(--opero-surface) 94%, white));
    color: var(--opero-text);
    font: inherit;
    font-size: 0.92rem;
    transition: border-color 180ms ease, box-shadow 180ms ease;
}

input:focus, textarea:focus, select:focus, .opero-input:focus {
    outline: none;
    border-color: var(--opero-input-focus-border, var(--opero-primary));
    box-shadow: var(--opero-input-focus-ring, 0 0 0 3px color-mix(in srgb, var(--opero-primary) 22%, transparent));
}

input[readonly], textarea[readonly] {
    background: color-mix(in srgb, var(--opero-background) 80%, var(--opero-surface));
    color: var(--opero-text-muted);
}

input::placeholder, textarea::placeholder { color: var(--opero-text-muted); }

.opero-help, .help {
    font-size: 0.8rem;
    color: var(--opero-text-muted);
    margin-top: var(--space-1);
}

.is-invalid input, .is-invalid textarea, .is-invalid select {
    border-color: var(--color-danger);
    box-shadow: 0 0 0 3px var(--color-danger-bg);
}

.is-valid input, .is-valid textarea, .is-valid select { border-color: var(--color-success); }
.field-error { color: var(--color-danger); font-size: 0.8rem; margin-top: var(--space-1); }

.search { min-width: min(280px, 100%); }

.color-control { display: grid; grid-template-columns: 52px 1fr auto; gap: var(--space-2); align-items: center; }
input[type='color'] { padding: 2px 4px; height: 2.4rem; cursor: pointer; border-radius: var(--opero-input-radius, var(--radius-md)); }

.upload-zone {
    border: 2px dashed color-mix(in srgb, var(--opero-text) 20%, transparent);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    text-align: center;
    color: var(--opero-text-muted);
    background: color-mix(in srgb, var(--opero-surface) 60%, transparent);
    transition: border-color 180ms ease, background 180ms ease;
    cursor: pointer;
}

.upload-zone:hover, .upload-zone.is-dragover {
    border-color: var(--opero-primary);
    background: color-mix(in srgb, var(--opero-primary) 6%, var(--opero-surface));
}

/* ===== 11. COMPONENTS - TABLES ===== */
.table-wrap {
    border: 1px solid color-mix(in srgb, var(--opero-text) 10%, transparent);
    border-radius: var(--radius-lg);
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
}

table, .opero-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

thead { background: color-mix(in srgb, var(--opero-surface) 70%, var(--opero-background)); }

th, td {
    padding: calc(var(--space-2) + 2px) var(--space-4);
    border-bottom: 1px solid color-mix(in srgb, var(--opero-text) 9%, transparent);
    text-align: left;
    vertical-align: middle;
}

th {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.09em;
    font-weight: 700;
    color: var(--opero-text-muted);
}

tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: color-mix(in srgb, var(--opero-primary) 4%, transparent); }
.muted-row td { opacity: 0.5; }
.highlight-row td { background: color-mix(in srgb, var(--opero-primary) 6%, transparent); }

/* ===== 12. COMPONENTS - BADGES & CHIPS ===== */
.badge, .chip, .opero-badge, .opero-chip {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) calc(var(--space-2) + 2px);
    border-radius: var(--radius-pill);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.07em;
    white-space: nowrap;
    border: 1px solid transparent;
}

.badge, .chip {
    background: color-mix(in srgb, var(--opero-accent) 24%, white);
    color: var(--opero-text-soft);
    border-color: color-mix(in srgb, var(--opero-accent) 40%, transparent);
}

.chip.chip-primary {
    background: color-mix(in srgb, var(--opero-primary) 16%, white);
    color: var(--opero-primary);
    border-color: color-mix(in srgb, var(--opero-primary) 30%, transparent);
}

.chip.chip-success, .badge.ok { background: var(--color-success-bg); color: var(--color-success); border-color: var(--color-success-border); }
.chip.chip-danger, .badge.error { background: var(--color-danger-bg); color: var(--color-danger); border-color: var(--color-danger-border); }
.chip.chip-warning, .badge.warn { background: var(--color-warning-bg); color: var(--color-warning); border-color: var(--color-warning-border); }
.chip.chip-info { background: var(--color-info-bg); color: var(--color-info); border-color: var(--color-info-border); }

.chips { display: flex; flex-wrap: wrap; gap: var(--space-2); }

/* ===== 13. COMPONENTS - ALERTS ===== */
.alert, .opero-alert {
    display: grid;
    gap: var(--space-2);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    border: 1px solid color-mix(in srgb, var(--opero-text) 12%, transparent);
    background: color-mix(in srgb, var(--opero-surface) 80%, var(--opero-background));
    color: var(--opero-text-soft);
}

.alert.success, .opero-alert--success { background: var(--color-success-bg); border-color: var(--color-success-border); color: var(--color-success); }
.alert.error, .opero-alert--danger { background: var(--color-danger-bg); border-color: var(--color-danger-border); color: var(--color-danger); }
.alert.warning, .opero-alert--warning { background: var(--color-warning-bg); border-color: var(--color-warning-border); color: var(--color-warning); }
.alert.info, .opero-alert--info { background: var(--color-info-bg); border-color: var(--color-info-border); color: var(--color-info); }

/* ===== 14. COMPONENTS - METRICS & STATS ===== */
.opero-metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: var(--space-3); }

.stat, .opero-metric {
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    border: 1px solid color-mix(in srgb, var(--opero-text) 10%, transparent);
    background: linear-gradient(
        180deg,
        color-mix(in srgb, var(--opero-surface) 92%, white),
        color-mix(in srgb, var(--opero-surface) 80%, var(--opero-background))
    );
}

.stat strong, .opero-metric strong {
    display: block;
    font: 600 clamp(1.4rem, 2.8vw, 2rem)/1 var(--opero-font-display, serif);
    letter-spacing: -0.04em;
    color: var(--opero-text);
}

.stat span, .opero-metric span {
    display: block;
    margin-top: var(--space-1);
    font-size: 0.85rem;
    color: var(--opero-text-muted);
}

/* ===== 15. COMPONENTS - EMPTY STATES ===== */
.opero-empty, .empty {
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    border: 2px dashed color-mix(in srgb, var(--opero-text) 16%, transparent);
    background: color-mix(in srgb, var(--opero-surface) 60%, transparent);
    color: var(--opero-text-muted);
    text-align: center;
}

.opero-empty p, .empty p { margin: 0; font-size: 0.94rem; }

/* ===== 16. COMPONENTS - TABS ===== */
.tabs { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-bottom: var(--space-4); }

.tab {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    min-width: 120px;
    padding: calc(var(--space-2) + 1px) var(--space-4);
    border-radius: var(--radius-pill);
    border: 1px solid color-mix(in srgb, var(--opero-text) 14%, transparent);
    background: color-mix(in srgb, var(--opero-surface) 90%, white);
    color: var(--opero-text-soft);
    font: 600 0.88rem/1 var(--opero-font-body, sans-serif);
    cursor: pointer;
    transition: background 180ms ease, color 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.tab:hover { background: color-mix(in srgb, var(--opero-primary) 10%, white); color: var(--opero-primary); }

.tab.is-active {
    background: linear-gradient(135deg, var(--opero-primary), var(--opero-secondary));
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-md);
}

.page { display: none; }
.page.is-active { display: block; }

/* ===== 17. COMPONENTS - MODALS & DRAWERS ===== */
.modal, .drawer { display: none; }
.modal.is-open, .drawer.is-open { display: block; }

.modal {
    position: fixed;
    inset: 0;
    background: color-mix(in srgb, var(--opero-text) 62%, transparent);
    padding: 8vh var(--space-4);
    z-index: 300;
    overflow-y: auto;
}

.modal-card {
    max-width: 560px;
    margin: 0 auto;
    background: color-mix(in srgb, var(--opero-surface) 96%, white);
    border-radius: var(--radius-xl);
    border: 1px solid color-mix(in srgb, var(--opero-text) 10%, transparent);
    padding: var(--space-5);
    box-shadow: var(--shadow-xl);
}

.drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: min(440px, 94vw);
    height: 100vh;
    background: color-mix(in srgb, var(--opero-surface) 96%, white);
    border-left: 1px solid color-mix(in srgb, var(--opero-text) 10%, transparent);
    box-shadow: var(--shadow-lg);
    padding: var(--space-5);
    overflow-y: auto;
    z-index: 300;
}

/* ===== 18. COMPONENTS - TIMELINE ===== */
.timeline, .opero-timeline { display: grid; gap: var(--space-3); }

.timeline-item,
.opero-timeline-item {
    border-left: 3px solid color-mix(in srgb, var(--opero-accent) 70%, transparent);
    padding-left: var(--space-4);
    position: relative;
}

.timeline-item::before,
.opero-timeline-item::before {
    content: '';
    position: absolute;
    left: -6px;
    top: var(--space-2);
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--opero-primary);
}

/* ===== 19. COMPONENTS - PAGINATION ===== */
.pager { display: flex; gap: var(--space-2); align-items: center; flex-wrap: wrap; }

.page-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2.2rem;
    height: 2.2rem;
    padding: 0 var(--space-2);
    border-radius: var(--radius-sm);
    border: 1px solid color-mix(in srgb, var(--opero-text) 14%, transparent);
    background: color-mix(in srgb, var(--opero-surface) 90%, white);
    color: var(--opero-text-soft);
    font-size: 0.88rem;
    cursor: pointer;
    transition: background 180ms ease, color 180ms ease;
}

.page-btn:hover { background: color-mix(in srgb, var(--opero-primary) 12%, white); color: var(--opero-primary); }
.page-btn.is-active { background: linear-gradient(135deg, var(--opero-primary), var(--opero-secondary)); color: white; border-color: transparent; }
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ===== 20. COMPONENTS - TOGGLES/SWITCHES ===== */
.switch {
    position: relative;
    display: inline-block;
    width: 52px;
    height: 28px;
    flex-shrink: 0;
}

.switch input { opacity: 0; width: 0; height: 0; position: absolute; }

.slider {
    position: absolute;
    inset: 0;
    border-radius: var(--radius-pill);
    background: color-mix(in srgb, var(--opero-text) 20%, transparent);
    transition: background 0.22s ease;
    cursor: pointer;
}

.slider::before {
    content: '';
    position: absolute;
    width: 22px;
    height: 22px;
    left: 3px;
    top: 3px;
    border-radius: 50%;
    background: color-mix(in srgb, var(--opero-surface) 95%, white);
    box-shadow: var(--shadow-sm);
    transition: transform 0.22s ease;
}

.switch input:checked + .slider { background: linear-gradient(135deg, var(--opero-primary), var(--opero-secondary)); }
.switch input:checked + .slider::before { transform: translateX(24px); }

.switch input:focus-visible + .slider {
    outline: 3px solid color-mix(in srgb, var(--opero-primary) 40%, transparent);
    outline-offset: 2px;
}

.module-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: var(--space-3); }

.module-card {
    border: 1px solid color-mix(in srgb, var(--opero-text) 10%, transparent);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    background: color-mix(in srgb, var(--opero-surface) 88%, white);
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: start;
    gap: var(--space-3);
}

.module-card p { margin: var(--space-1) 0 0; color: var(--opero-text-muted); font-size: 0.85rem; }

/* ===== 21. COMPONENTS - PROGRESS & LOADING ===== */
.opero-progress {
    width: 100%;
    height: 8px;
    background: color-mix(in srgb, var(--opero-text) 10%, transparent);
    border-radius: var(--radius-pill);
    overflow: hidden;
}

.opero-progress__bar {
    height: 100%;
    border-radius: var(--radius-pill);
    background: linear-gradient(90deg, var(--opero-primary), var(--opero-secondary));
    transition: width 400ms ease;
}

.opero-progress--sm { height: 4px; }
.opero-progress--lg { height: 12px; }

.opero-spinner {
    display: inline-block;
    width: 1.3em;
    height: 1.3em;
    border: 2px solid color-mix(in srgb, var(--opero-primary) 24%, transparent);
    border-top-color: var(--opero-primary);
    border-radius: 50%;
    animation: opero-spin 0.7s linear infinite;
    flex-shrink: 0;
}

.opero-spinner--sm { width: 1em; height: 1em; border-width: 2px; }
.opero-spinner--lg { width: 2em; height: 2em; border-width: 3px; }

@keyframes opero-spin { to { transform: rotate(360deg); } }

.opero-skeleton {
    background: linear-gradient(
        90deg,
        color-mix(in srgb, var(--opero-surface) 80%, transparent) 25%,
        color-mix(in srgb, var(--opero-accent) 18%, var(--opero-surface)) 50%,
        color-mix(in srgb, var(--opero-surface) 80%, transparent) 75%
    );
    background-size: 200% 100%;
    border-radius: var(--radius-md);
    animation: opero-shimmer 1.4s ease-in-out infinite;
}

@keyframes opero-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.opero-skeleton--text { height: 1em; margin-bottom: var(--space-2); }
.opero-skeleton--heading { height: 1.6em; width: 60%; margin-bottom: var(--space-3); }
.opero-skeleton--image { aspect-ratio: 4/5; width: 100%; }

/* ===== 22. COMPONENTS - AVATAR & HEADSHOT ===== */
.opero-avatar {
    display: block;
    border-radius: 50%;
    overflow: hidden;
    background: color-mix(in srgb, var(--opero-accent) 24%, var(--opero-surface));
    flex-shrink: 0;
}

.opero-avatar img { width: 100%; height: 100%; object-fit: cover; display: block; }

.opero-avatar--xs { width: 28px; height: 28px; }
.opero-avatar--sm { width: 40px; height: 40px; }
.opero-avatar--md { width: 56px; height: 56px; }
.opero-avatar--lg { width: 80px; height: 80px; }
.opero-avatar--xl { width: 120px; height: 120px; }

.opero-avatar-group {
    display: flex;
    flex-direction: row-reverse;
    width: max-content;
}

.opero-avatar-group .opero-avatar {
    margin-left: -12px;
    border: 2px solid color-mix(in srgb, var(--opero-surface) 95%, white);
}

.opero-headshot {
    display: block;
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: var(--radius-xl);
    background: color-mix(in srgb, var(--opero-surface) 70%, var(--opero-background));
}

.opero-headshot--portrait { aspect-ratio: 3 / 4; }
.opero-headshot--landscape { aspect-ratio: 16 / 9; }

/* ===== 23. COMPONENTS - TOOLTIPS ===== */
[data-tooltip] {
    position: relative;
    cursor: help;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%);
    background: color-mix(in srgb, var(--opero-text) 92%, black);
    color: color-mix(in srgb, var(--opero-surface) 95%, white);
    font-size: 0.76rem;
    font-weight: 500;
    white-space: nowrap;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    pointer-events: none;
    opacity: 0;
    transition: opacity 150ms ease;
    z-index: 50;
    max-width: 220px;
    white-space: normal;
    text-align: center;
}

[data-tooltip]:hover::after,
[data-tooltip]:focus-visible::after {
    opacity: 1;
}

[data-tooltip-pos='below']::after { bottom: auto; top: calc(100% + 6px); }

[data-tooltip-pos='right']::after {
    left: calc(100% + 6px);
    top: 50%;
    bottom: auto;
    transform: translateY(-50%);
}

/* ===== 24. PUBLIC SURFACE COMPONENTS ===== */
.opero-public-header,
.opero-public-nav,
.opero-public-footer {
    background: color-mix(in srgb, var(--opero-surface) 84%, white);
    border: 1px solid color-mix(in srgb, var(--opero-accent) 40%, transparent);
    backdrop-filter: blur(16px);
}

.opero-public-header {
    padding: var(--space-4) clamp(var(--space-4), 4vw, var(--space-8));
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    border-bottom: none;
    border-radius: 0;
}

.opero-public-nav {
    padding: var(--space-2) clamp(var(--space-4), 4vw, var(--space-8));
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-1);
    border-top: none;
    border-bottom: 1px solid color-mix(in srgb, var(--opero-accent) 40%, transparent);
    border-radius: 0;
    position: sticky;
    top: 0;
    z-index: 20;
}

.opero-public-nav__link,
.opero-public-nav a {
    display: inline-flex;
    align-items: center;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    font-size: 0.84rem;
    font-weight: 400;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--opero-text-soft);
    text-decoration: none;
    transition: color 0.15s, background 0.15s;
}

.opero-public-nav__link:hover,
.opero-public-nav a:hover {
    color: var(--opero-primary);
    background: color-mix(in srgb, var(--opero-primary) 8%, transparent);
}

.opero-public-nav__link.is-active,
.opero-public-nav a.is-active {
    color: var(--opero-primary);
    font-weight: 600;
}

.opero-public-footer {
    padding: var(--space-8) clamp(var(--space-4), 4vw, var(--space-8));
    border-top: 1px solid color-mix(in srgb, var(--opero-accent) 40%, transparent);
    border-bottom: none;
    border-radius: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    text-align: center;
}

.archive-shell {
    width: min(1180px, calc(100vw - var(--space-8)));
    margin: 0 auto;
    padding: var(--space-10) 0 var(--space-20);
}

.archive-hero { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: var(--space-6); align-items: end; margin-bottom: var(--space-8); }

.archive-panel, .archive-card, .work-detail, .work-aside {
    background: linear-gradient(
        180deg,
        color-mix(in srgb, var(--opero-surface) 94%, white),
        color-mix(in srgb, var(--opero-surface) 88%, var(--opero-background))
    );
    border: 1px solid color-mix(in srgb, var(--opero-accent) 36%, transparent);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.archive-panel { padding: var(--space-6); }
.archive-card { overflow: hidden; }
.archive-card img { display: block; width: 100%; aspect-ratio: 3/4; object-fit: cover; background: color-mix(in srgb, var(--opero-surface) 70%, var(--opero-background)); }
.archive-card-body { padding: var(--space-4); }

.series-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: var(--space-4); }
.works-grid, .related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: var(--space-4); }
.exhibitions-list, .media-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: var(--space-4); }

.filter-row { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, max-content)); gap: var(--space-3); margin-bottom: var(--space-6); }

.filter-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-pill);
    text-decoration: none;
    background: color-mix(in srgb, var(--opero-primary) 10%, transparent);
    color: var(--opero-text-soft);
    border: 1px solid transparent;
    font-size: 0.88rem;
    transition: background 180ms ease, color 180ms ease;
}

.filter-pill.is-active { background: var(--opero-primary); color: white; }
.filter-pill:hover { background: color-mix(in srgb, var(--opero-primary) 16%, transparent); color: var(--opero-primary); }

.work-layout { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr); gap: var(--space-5); }
.bio-layout { display: grid; grid-template-columns: minmax(200px, 300px) minmax(0, 1fr); gap: var(--space-5); }
.work-detail, .work-aside { padding: var(--space-5); }

/* ===== 25. INSTALLER SURFACE ===== */
.installer-shell {
    width: min(1080px, 94vw);
    margin: var(--space-8) auto var(--space-16);
    display: grid;
    gap: var(--space-4);
}

.installer-hero,
.nuke-hero {
    border: 1px solid color-mix(in srgb, var(--opero-text) 10%, transparent);
    background: color-mix(in srgb, var(--opero-surface) 82%, white);
    backdrop-filter: blur(16px);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-xl);
    padding: var(--space-5);
}

.installer-form { display: grid; gap: var(--space-4); }

.nuke-layout { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.nuke-panel { border-top: 3px solid var(--color-danger); }
.nuke-list { margin: var(--space-2) 0 0; padding-left: 1.1rem; display: grid; gap: var(--space-2); }
.nuke-form { display: grid; gap: var(--space-3); }

.mobile-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    min-width: 2.4rem;
    width: 2.4rem;
    height: 2.4rem;
    padding: 0;
    border-radius: var(--radius-md);
    border: 1px solid color-mix(in srgb, var(--opero-text) 14%, transparent);
    background: color-mix(in srgb, var(--opero-surface) 90%, white);
    color: var(--opero-text);
    cursor: pointer;
    font: inherit;
}

/* ===== 26. UTILITY CLASSES ===== */
.block { display: block; }
.inline { display: inline; }
.inline-block { display: inline-block; }
.hidden { display: none; }
.opero-visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.w-full { width: 100%; }
.w-auto { width: auto; }
.h-full { height: 100%; }
.max-w-prose { max-width: 65ch; }

.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-x-auto { overflow-x: auto; }

.relative { position: relative; }
.absolute { position: absolute; }
.sticky { position: sticky; }

.rounded-none { border-radius: 0; }
.rounded-sm { border-radius: var(--radius-sm); }
.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-pill); }

.shadow-none { box-shadow: none; }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

.mt-0 { margin-top: 0; }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mx-auto { margin-inline: auto; }

.p-0 { padding: 0; }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }
.p-5 { padding: var(--space-5); }
.p-6 { padding: var(--space-6); }
.px-4 { padding-inline: var(--space-4); }
.py-4 { padding-block: var(--space-4); }

.cursor-pointer { cursor: pointer; }
.cursor-default { cursor: default; }
.cursor-wait { cursor: wait; }
.cursor-not-allowed { cursor: not-allowed; }

.opacity-0 { opacity: 0; }
.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }
.opacity-100 { opacity: 1; }

.transition { transition: all 180ms ease; }
.transition-none { transition: none; }

.border-0 { border: 0; }
.border-t { border-top: 1px solid color-mix(in srgb, var(--opero-text) 10%, transparent); }
.border-b { border-bottom: 1px solid color-mix(in srgb, var(--opero-text) 10%, transparent); }

.nuke-panel { border-top: 3px solid var(--color-danger); }

/* ===== 26.5 EXHIBITION ENGINE UTILITIES ===== */
.opero-blur-load {
    filter: blur(20px);
    opacity: 0.88;
    transition: filter 0.8s ease-out, opacity 0.8s ease-out;
}

.opero-blur-loaded {
    filter: blur(0);
    opacity: 1;
}

.opero-scroll-snap-y {
    scroll-snap-type: y mandatory;
    overflow-y: scroll;
    height: 100vh;
}

.opero-snap-section {
    scroll-snap-align: start;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.opero-masonry {
    column-count: 1;
    column-gap: var(--space-4);
}

.opero-masonry > * {
    break-inside: avoid;
    margin-bottom: var(--space-4);
    display: block;
}

.opero-drop-cap::first-letter {
    float: left;
    font-family: var(--font-display, var(--opero-font-display, serif));
    font-size: 3.5em;
    line-height: 0.85;
    margin: 0.08em 0.12em 0 0;
}

.bg-surface {
    background: var(--opero-surface);
}

.bg-alt {
    background: color-mix(in srgb, var(--opero-surface) 78%, var(--opero-background));
}

.opero-dark-mode-force {
    --opero-text: #ffffff;
    --opero-background: #1f1f1f;
    color-scheme: dark;
}

.opero-reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 1s cubic-bezier(0.16, 1, 0.3, 1);
}

.opero-reveal.is-revealed {
    opacity: 1;
    transform: translateY(0);
}

@media (min-width: 768px) {
    .opero-masonry {
        column-count: 2;
    }
}

@media (min-width: 1024px) {
    .opero-masonry {
        column-count: 3;
    }
}

@media (min-width: 1280px) {
    .opero-masonry {
        column-count: 4;
    }
}

/* ===== 27. RESPONSIVE BREAKPOINTS ===== */
@media (max-width: 960px) {
    .shell, .opero-admin-shell, .shell.sidebar-collapsed, .opero-admin-shell.sidebar-collapsed {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        width: min(320px, calc(100% - 3rem));
        transform: translateX(-100%);
        transition: transform 220ms ease;
        z-index: 200;
        overflow-y: auto;
    }

    .sidebar.is-open { transform: translateX(0); }
    .mobile-toggle { display: inline-flex; }
    .sidebar-toggle { display: none; }

    .sidebar.is-collapsed .nav-section-header {
        width: 100%;
        min-width: 0;
        margin: 0;
        justify-content: flex-start;
        padding: calc(var(--space-2) + 2px) calc(var(--space-2) + 4px);
        border-radius: var(--radius-md);
    }

    .sidebar.is-collapsed .nav-section-header .nav-text { display: inline; }
    .sidebar.is-collapsed .nav-chevron { display: inline-block; }

    .sidebar.is-collapsed .nav-section-items {
        position: static;
        background: transparent;
        box-shadow: none;
        border: 0;
        border-left: 1px solid color-mix(in srgb, var(--opero-text) 20%, transparent);
    }

    .sidebar.is-collapsed .brand-logo { width: 108px; }

    .opero-hero,
    .opero-hero-grid,
    .opero-detail-grid,
    .opero-sidebar-layout,
    .archive-hero,
    .work-layout,
    .bio-layout {
        grid-template-columns: 1fr;
    }

    .opero-page {
        padding-left: var(--space-4);
        padding-right: var(--space-4);
    }
}

@media (max-width: 860px) {
    .color-control { grid-template-columns: 52px 1fr; }
    .color-control .btn { grid-column: span 2; }
    .module-grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
    .topbar { flex-direction: column; align-items: stretch; }
    .topbar-right { width: 100%; flex-wrap: wrap; }
    .main, .opero-admin-main { padding: var(--space-3); }
    .panel, .opero-panel, .modal-card { padding: var(--space-4); }
    .tabs { flex-direction: column; }
    .tab { width: 100%; min-width: 0; justify-content: center; }
    .actions .btn, .actions button { width: 100%; min-width: 0; }
}

@media (max-width: 680px) {
    .archive-shell { width: calc(100vw - var(--space-4)); padding-top: var(--space-6); }

    .archive-panel,
    .work-detail,
    .work-aside,
    .archive-card-body { padding: var(--space-4); }

    .works-grid,
    .series-grid,
    .related-grid,
    .exhibitions-list,
    .media-list { grid-template-columns: 1fr; }

    .filter-row { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
    .modal { padding: 4vh var(--space-2); }
    .drawer { width: 100vw; border-left: 0; }
    .opero-public-nav { flex-direction: column; gap: var(--space-1); }
}

@media (max-width: 420px) {
    .main, .opero-admin-main { padding: var(--space-2); }
    .page-title { font-size: 1.2rem; }
    .stat strong, .opero-metric strong { font-size: 1.2rem; }
}

.sidebar.is-collapsed .brand-logo { width: 42px; }
.sidebar.is-collapsed .nav-section-header {
    justify-content: center;
    width: 2.4rem;
    min-width: 2.4rem;
    padding: calc(var(--space-2) - 1px) 0;
    border-radius: var(--radius-sm);
    margin: 0 auto;
}

.sidebar.is-collapsed .nav-section-header .nav-text { display: none; }
.sidebar.is-collapsed .nav-chevron { display: none; }

.sidebar.is-collapsed .nav-section-items {
    position: absolute;
    top: 0;
    left: calc(100% + 8px);
    z-index: 120;
    width: max-content;
    min-width: 220px;
    margin: 0;
    padding: var(--space-2);
    border: 1px solid color-mix(in srgb, var(--opero-accent) 60%, transparent);
    border-radius: var(--radius-lg);
    background: color-mix(in srgb, var(--opero-surface) 96%, white);
    box-shadow: var(--shadow-xl);
    max-height: 0;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-2px) translateX(-4px);
    transition: max-height 0.22s ease, opacity 0.18s ease, transform 0.2s ease;
}

.sidebar.is-collapsed .nav-section:hover > .nav-section-items,
.sidebar.is-collapsed .nav-section.is-popout-open > .nav-section-items {
    max-height: 800px;
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0) translateX(0);
}

@media (min-width: 761px) { .opero-show-sm { display: none; } }
@media (max-width: 760px) { .opero-hide-sm { display: none; } .mobile-toggle { display: inline-flex; } }