:root {
  color-scheme: dark;
  --color-canvas: #0a0a0a;
  --color-surface: #141313;
  --color-surface-low: #1c1b1b;
  --color-surface-high: #2b2a2a;
  --color-text: #f2f0ef;
  --color-muted: #a8aaab;
  --color-border: #353738;
  --color-primary: #6ea8fe;
  --color-primary-strong: #3b82f6;
  --color-danger: #e47770;
  --color-success: #68b887;
  --color-warning: #d8ad5c;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --shadow-float: 0 18px 60px rgb(0 0 0 / 38%);
  --sidebar-width: 264px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { min-width: 320px; background: var(--color-canvas); }
body { min-height: 100vh; margin: 0; background: var(--color-canvas); color: var(--color-text); line-height: 1.5; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }

.button {
  min-height: 44px; display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  padding: 0 var(--space-4); border: 1px solid transparent; border-radius: var(--radius-md);
  background: var(--color-primary-strong); color: white; font-weight: 700; text-decoration: none; cursor: pointer;
}
.button:hover { filter: brightness(1.08); }
.button:focus-visible, .input:focus-visible, .icon-button:focus-visible { outline: 3px solid rgb(110 168 254 / 35%); outline-offset: 2px; }
.button--block { width: 100%; }
.button--ghost { background: transparent; border-color: var(--color-border); color: var(--color-text); }
.icon-button { width: 44px; height: 44px; display: inline-grid; place-items: center; color: var(--color-text); background: transparent; border: 1px solid var(--color-border); border-radius: var(--radius-md); cursor: pointer; }
.icon { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.field { display: grid; gap: var(--space-2); }
.label { color: var(--color-muted); font-size: .75rem; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; }
.input { width: 100%; min-height: 48px; padding: 0 14px; color: var(--color-text); background: #101010; border: 1px solid var(--color-border); border-radius: var(--radius-md); }
.input::placeholder { color: #727576; }
.input:focus { border-color: var(--color-primary); }
.alert { padding: var(--space-3) var(--space-4); border: 1px solid; border-radius: var(--radius-md); font-size: .9rem; }
.alert--error { background: rgb(228 119 112 / 10%); border-color: rgb(228 119 112 / 45%); color: #ffbbb5; }
.alert--success { background: rgb(104 184 135 / 10%); border-color: rgb(104 184 135 / 45%); color: #a7e2bb; }
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 4px 8px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); color: var(--color-muted); font-size: .75rem; font-weight: 700; }

.brand { display: inline-flex; align-items: center; gap: var(--space-3); font-weight: 800; letter-spacing: -.02em; }
.brand__mark { width: 34px; height: 34px; display: grid; place-items: center; border: 1px solid #505254; border-radius: 10px; background: linear-gradient(145deg, #252627, #101010); }

.auth-layout { min-height: 100vh; display: grid; grid-template-columns: minmax(360px, 520px) 1fr; padding: var(--space-6); gap: var(--space-6); }
.auth-panel { display: flex; flex-direction: column; padding: clamp(24px, 5vw, 64px); border: 1px solid var(--color-border); border-radius: var(--radius-xl); background: rgb(20 19 19 / 92%); }
.auth-panel__content { width: min(100%, 390px); margin: auto; }
.auth-heading { margin: 0 0 var(--space-2); font-size: clamp(2rem, 4vw, 3rem); line-height: 1.08; letter-spacing: -.035em; }
.auth-copy { margin: 0 0 var(--space-8); color: var(--color-muted); }
.auth-form { display: grid; gap: var(--space-4); }
.auth-footer { margin-top: var(--space-8); color: var(--color-muted); font-size: .8rem; }
.auth-visual { position: relative; overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-xl); background: radial-gradient(circle at 68% 30%, rgb(59 130 246 / 18%), transparent 28%), linear-gradient(155deg, #242526 0%, #0d0d0d 55%, #18202b 100%); }
.auth-visual::before, .auth-visual::after { content: ""; position: absolute; inset: 16% 10%; border: 1px solid rgb(255 255 255 / 9%); transform: perspective(700px) rotateX(62deg) rotateZ(-15deg); }
.auth-visual::after { inset: 26% 20%; border-color: rgb(110 168 254 / 28%); }
.auth-visual__caption { position: absolute; left: var(--space-8); right: var(--space-8); bottom: var(--space-8); max-width: 460px; }
.auth-visual__caption p { color: var(--color-muted); }

.admin-layout { min-height: 100vh; display: grid; grid-template-columns: var(--sidebar-width) minmax(0, 1fr); }
.sidebar { position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; padding: var(--space-6) var(--space-4); border-right: 1px solid var(--color-border); background: var(--color-surface); z-index: 30; }
.sidebar__nav { display: grid; gap: 6px; margin-top: var(--space-8); }
.nav-link { min-height: 44px; display: flex; align-items: center; gap: var(--space-3); padding: 0 var(--space-3); border-radius: var(--radius-md); color: var(--color-muted); text-decoration: none; }
.nav-link[aria-current="page"] { background: var(--color-surface-high); color: var(--color-text); }
.nav-link[aria-disabled="true"] { opacity: .45; cursor: not-allowed; }
.nav-link__label { flex: 1; }
.sidebar__footer { margin-top: auto; padding-top: var(--space-4); border-top: 1px solid var(--color-border); }
.sidebar-backdrop { display: none; }
.admin-main { min-width: 0; }
.topbar { min-height: 76px; display: flex; align-items: center; gap: var(--space-4); padding: var(--space-4) var(--space-6); border-bottom: 1px solid var(--color-border); background: rgb(10 10 10 / 82%); backdrop-filter: blur(12px); }
.topbar h1 { margin: 0; font-size: 1.1rem; }
.topbar__user { margin-left: auto; display: flex; align-items: center; gap: var(--space-3); }
.topbar__identity { text-align: right; }
.topbar__identity strong, .topbar__identity span { display: block; }
.topbar__identity span { color: var(--color-muted); font-size: .78rem; }
.mobile-menu { display: none; }
.admin-content { padding: clamp(20px, 3vw, 40px); }
.page-header { display: flex; align-items: end; justify-content: space-between; gap: var(--space-4); margin-bottom: var(--space-8); }
.page-header h2 { margin: 0 0 var(--space-2); font-size: clamp(1.7rem, 3vw, 2.5rem); letter-spacing: -.03em; }
.page-header p { margin: 0; color: var(--color-muted); }
.dashboard-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-4); }
.card { padding: var(--space-6); border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface-low); box-shadow: 0 1px 0 rgb(255 255 255 / 3%) inset; }
.card h3 { margin: 0 0 var(--space-2); font-size: 1rem; }
.card p { margin: 0; color: var(--color-muted); }
.empty-state { grid-column: 1 / -1; min-height: 300px; display: grid; place-items: center; text-align: center; background: radial-gradient(circle at 50% 0, rgb(110 168 254 / 8%), transparent 40%), var(--color-surface-low); }
.empty-state__icon { width: 54px; height: 54px; display: grid; place-items: center; margin: 0 auto var(--space-4); border: 1px solid var(--color-border); border-radius: var(--radius-lg); }
.modal-backdrop { position: fixed; inset: 0; display: grid; place-items: center; padding: var(--space-4); background: rgb(0 0 0 / 70%); z-index: 100; }
.modal { width: min(100%, 560px); padding: var(--space-6); border: 1px solid var(--color-border); border-radius: var(--radius-xl); background: var(--color-surface-low); box-shadow: var(--shadow-float); }
.drawer { position: fixed; inset: 0 0 0 auto; width: min(90vw, 420px); padding: var(--space-6); border-left: 1px solid var(--color-border); background: var(--color-surface); box-shadow: var(--shadow-float); z-index: 90; }
.project-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-4); }
.project-card { overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-lg); background: var(--color-surface-low); }
.project-card__cover { aspect-ratio: 16/8; display: grid; place-items: center; overflow: hidden; color: var(--color-muted); font-size: 2rem; background: radial-gradient(circle at 70% 20%, rgb(59 130 246 / 16%), transparent 35%), #111; }
.project-card__cover img { width: 100%; height: 100%; object-fit: cover; }
.project-card__body { display: grid; gap: var(--space-3); padding: var(--space-4); }
.project-card__body h3, .project-card__body p { margin: 0; }
.project-card__body p { color: var(--color-muted); }
.project-card__meta, .section-heading, .page-actions { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }
.project-card__meta time, .project-type, .form-hint { color: var(--color-muted); font-size: .8rem; }
.badge--draft { color: #f0c879; border-color: rgb(216 173 92 / 45%); background: rgb(216 173 92 / 8%); }
.setup-steps { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: var(--space-2); padding: 0; margin: 0 0 var(--space-6); list-style: none; }
.setup-steps li { min-height: 52px; display: flex; align-items: center; gap: var(--space-2); padding: var(--space-3); border: 1px solid var(--color-border); border-radius: var(--radius-md); color: var(--color-muted); }
.setup-steps li span { width: 26px; height: 26px; display: grid; place-items: center; flex: none; border: 1px solid var(--color-border); border-radius: 50%; }
.setup-steps li.is-active { color: var(--color-text); border-color: rgb(110 168 254 / 45%); }
.setup-steps li.is-complete { color: #a7e2bb; border-color: rgb(104 184 135 / 35%); }
.setup-steps li[aria-disabled="true"] { opacity: .45; }
.project-form { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: var(--space-4); }
.form-wide { grid-column: 1/-1; }
.textarea { min-height: 120px; padding: 12px 14px; resize: vertical; }
.form-actions { display: flex; justify-content: flex-end; gap: var(--space-3); }
.field-error { color: #ffbbb5; }
.detail-grid { display: grid; grid-template-columns: minmax(0,1fr) minmax(320px,.8fr); gap: var(--space-4); margin-bottom: var(--space-4); }
.metadata-list { margin: var(--space-4) 0 0; }
.metadata-list div { display: flex; justify-content: space-between; gap: var(--space-4); padding: var(--space-3) 0; border-bottom: 1px solid var(--color-border); }
.metadata-list dt { color: var(--color-muted); }
.metadata-list dd { margin: 0; text-align: right; }
.preview-placeholder { min-height: 260px; display: grid; place-content: center; justify-items: center; text-align: center; background: radial-gradient(circle at 50% 30%,rgb(59 130 246 / 10%),transparent 45%),var(--color-surface-low); }
.setup-progress { margin-bottom: var(--space-4); }
.setup-progress ul { padding: 0; margin: 0; list-style: none; }
.setup-progress li { display: flex; justify-content: space-between; gap: var(--space-4); padding: var(--space-3) 0; border-bottom: 1px solid var(--color-border); }
.setup-progress strong { color: var(--color-muted); font-size: .85rem; }
.state-complete { color: #87d4a2 !important; }
.state-pending { color: #e0bd79 !important; }
.setup-layout { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: var(--space-4); margin-bottom: var(--space-4); }
.upload-section { min-width: 0; }
.upload-section:nth-child(3) { grid-column: 1/-1; }
.upload-section h3, .section-heading p { margin: 0; }
.asset-summary { display: grid; gap: 4px; margin: var(--space-4) 0; padding: var(--space-3); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: #111; }
.asset-summary span { color: var(--color-muted); font-size: .82rem; }
.upload-zone { min-height: 220px; display: grid; place-items: center; align-content: center; gap: var(--space-2); padding: var(--space-6); margin-top: var(--space-4); border: 1px dashed #55595b; border-radius: var(--radius-lg); text-align: center; background: rgb(255 255 255 / 1.5%); transition: border-color .15s,background .15s; }
.upload-zone.is-dragging { border-color: var(--color-primary); background: rgb(59 130 246 / 8%); }
.upload-zone__icon { font-size: 1.8rem; color: var(--color-primary); }
.upload-zone--compact { min-height: 120px; padding: var(--space-3); }
.upload-status { min-height: 1.4em; color: var(--color-muted); font-size: .85rem; }
.upload-status.is-error { color: #ffbbb5; }
.upload-status.is-success { color: #a7e2bb; }
progress { width: min(100%,320px); height: 8px; accent-color: var(--color-primary-strong); }
.image-upload-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: var(--space-4); margin-top: var(--space-4); }
.image-preview { aspect-ratio: 16/7; margin-top: var(--space-3); overflow: hidden; border: 1px solid var(--color-border); border-radius: var(--radius-md); }
.image-preview img { width: 100%; height: 100%; object-fit: contain; background: #0d0d0d; }
.model-history { margin-top: var(--space-4); }
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .88rem; }
th,td { padding: var(--space-3); border-bottom: 1px solid var(--color-border); text-align: left; white-space: nowrap; }
th { color: var(--color-muted); font-size: .72rem; letter-spacing: .06em; text-transform: uppercase; }

.simple-page { min-height: 100vh; display: grid; place-items: center; padding: var(--space-6); }
.simple-card { width: min(100%, 560px); }

@media (max-width: 1100px) {
  .auth-layout { grid-template-columns: 1fr; }
  .auth-visual { min-height: 250px; order: -1; }
  .auth-panel { min-height: 580px; }
  .dashboard-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .admin-layout { grid-template-columns: 1fr; }
  .project-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .setup-layout { grid-template-columns: 1fr; }
  .upload-section:nth-child(3) { grid-column: auto; }
  .sidebar { position: fixed; left: 0; width: min(84vw, 300px); transform: translateX(-105%); transition: transform .2s ease; box-shadow: var(--shadow-float); }
  .sidebar.is-open { transform: translateX(0); }
  .sidebar-backdrop { position: fixed; inset: 0; display: block; border: 0; background: rgb(0 0 0 / 60%); opacity: 0; pointer-events: none; transition: opacity .2s ease; z-index: 20; }
  .sidebar-backdrop.is-open { opacity: 1; pointer-events: auto; }
  .mobile-menu { display: inline-grid; }
}

@media (max-width: 640px) {
  .auth-layout { padding: 0; }
  .auth-visual { display: none; }
  .auth-panel { min-height: 100vh; padding: 24px 20px; border: 0; border-radius: 0; }
  .topbar { min-height: 64px; padding: 10px 12px; }
  .topbar__identity { display: none; }
  .admin-content { padding: 20px 14px; }
  .page-header { align-items: start; flex-direction: column; }
  .dashboard-grid { grid-template-columns: 1fr; }
  .card { padding: 20px; }
  .project-grid, .project-form, .image-upload-grid, .detail-grid { grid-template-columns: 1fr; }
  .setup-steps { display: flex; overflow-x: auto; padding-bottom: var(--space-2); }
  .setup-steps li { min-width: 155px; }
  .page-actions, .form-actions { width: 100%; }
  .page-actions .button, .form-actions .button { flex: 1; }
  .upload-zone { min-height: 190px; }
}

@media (max-height: 500px) and (orientation: landscape) {
  .auth-layout { display: block; padding: 12px; }
  .auth-visual { display: none; }
  .auth-panel { min-height: calc(100vh - 24px); padding: 20px; }
  .auth-panel__content { width: min(100%, 680px); }
  .auth-heading { font-size: 1.75rem; }
  .auth-copy { margin-bottom: 12px; }
  .auth-form { grid-template-columns: 1fr 1fr; }
  .auth-form .alert, .auth-form .button { grid-column: 1 / -1; }
  .auth-footer { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}