:root {
  color-scheme: dark;
  --bg: #0a0a0f;
  --surface: #111118;
  --surface-2: #171722;
  --surface-3: #1d1d2a;
  --text: #f6f4ff;
  --muted: #9e9aaa;
  --line: rgba(255,255,255,.09);
  --accent: #8065ff;
  --accent-2: #a48fff;
  --cyan: #42e0c0;
  --danger: #ff7085;
  --warning: #f4bc62;
  --shadow: 0 24px 70px rgba(0,0,0,.28);
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--bg); }
body { margin: 0; color: var(--text); background: radial-gradient(circle at 55% -20%, #262042 0, transparent 42%), var(--bg); font: 15px/1.55 "Microsoft YaHei UI", "Microsoft YaHei", system-ui, sans-serif; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, a:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
button:disabled { cursor: not-allowed; opacity: .46; }
a { color: inherit; }
[hidden] { display: none !important; }

.shell { min-width: 0; min-height: 100vh; display: grid; grid-template-columns: 250px minmax(0, 1fr); }
.sidebar { min-width: 0; position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; padding: 24px 18px; background: rgba(8,8,13,.92); border-right: 1px solid var(--line); backdrop-filter: blur(20px); z-index: 5; }
.brand { display: flex; align-items: center; gap: 12px; padding: 0 8px 24px; }
.brand img { width: 42px; height: 42px; }
.brand strong, .brand small { display: block; }
.brand strong { font-size: 18px; letter-spacing: .04em; }
.brand small { color: var(--muted); font-size: 10px; letter-spacing: .16em; }
nav { display: grid; gap: 6px; }
.nav { width: 100%; display: grid; grid-template-columns: 28px 1fr; gap: 0 8px; padding: 11px 12px; color: var(--text); background: transparent; border: 1px solid transparent; border-radius: 14px; text-align: left; transition: .2s ease; }
.nav > span { grid-row: 1 / 3; display: grid; place-items: center; color: var(--muted); font-size: 16px; }
.nav b { font-size: 14px; }
.nav small { color: var(--muted); font-size: 11px; }
.nav:hover { background: rgba(255,255,255,.04); }
.nav.active { background: linear-gradient(135deg, rgba(128,101,255,.2), rgba(128,101,255,.07)); border-color: rgba(128,101,255,.34); }
.nav.active > span { color: var(--accent-2); }
.sidebar-foot { margin-top: auto; padding: 16px 9px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.sidebar-foot > span { color: var(--cyan); letter-spacing: .12em; }
.sidebar-foot p { margin: 8px 0; }
.sidebar-foot a { color: #d7d0ff; text-decoration: none; }

.main { min-width: 0; padding: 28px clamp(20px, 3vw, 48px) 56px; }
.topbar { min-height: 64px; display: flex; justify-content: space-between; align-items: center; gap: 24px; margin-bottom: 26px; }
.topbar > div:first-child > span { color: var(--muted); font-size: 10px; letter-spacing: .16em; }
.topbar h1 { margin: 3px 0 0; font-size: clamp(24px, 3vw, 31px); line-height: 1.2; }
.top-actions { display: flex; align-items: center; gap: 10px; }
.system-state { max-width: 210px; color: var(--muted); font-size: 11px; text-align: right; }
.primary, .ghost, .text-button { border-radius: 11px; transition: .18s ease; }
.primary { padding: 11px 17px; border: 0; color: white; background: linear-gradient(135deg, #6850ee, #967cff); box-shadow: 0 9px 28px rgba(104,80,238,.22); }
.primary:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 12px 34px rgba(104,80,238,.32); }
.ghost { padding: 10px 14px; color: var(--text); background: rgba(255,255,255,.04); border: 1px solid var(--line); }
.ghost:hover { background: rgba(255,255,255,.08); }
.text-button { padding: 4px 7px; color: var(--accent-2); background: transparent; border: 0; font-size: 12px; }
.wide { width: 100%; }

.page { display: none; }
.page.active { display: block; animation: enter .28s ease both; }
@keyframes enter { from { opacity: 0; transform: translateY(4px); } }
.hero { display: flex; align-items: center; justify-content: space-between; gap: 26px; padding: clamp(22px, 3vw, 34px); margin-bottom: 16px; border: 1px solid var(--line); border-radius: 22px; background: linear-gradient(135deg, rgba(128,101,255,.12), rgba(66,224,192,.035)); box-shadow: var(--shadow); }
.hero.compact { padding: 22px 26px; box-shadow: none; }
.hero h2 { margin: 6px 0 8px; font-size: clamp(23px, 3vw, 36px); line-height: 1.22; letter-spacing: -.02em; }
.hero.compact h2 { font-size: clamp(22px, 2.5vw, 30px); }
.hero p { max-width: 760px; margin: 0; color: var(--muted); }
.eyebrow { color: var(--cyan); font-size: 10px; letter-spacing: .18em; }
.hero-badge { min-width: 150px; padding: 18px; border-radius: 18px; background: rgba(0,0,0,.2); border: 1px solid var(--line); text-align: center; }
.hero-badge strong { display: block; color: var(--accent-2); font-size: 38px; line-height: 1; }
.hero-badge span, .hero-badge small { display: block; }
.hero-badge span { margin-top: 8px; }
.hero-badge small { color: var(--muted); font-size: 10px; }
.status-pill { padding: 9px 13px; white-space: nowrap; color: var(--warning); background: rgba(244,188,98,.1); border: 1px solid rgba(244,188,98,.23); border-radius: 999px; font-size: 11px; }
.status-pill.ready { color: var(--cyan); background: rgba(66,224,192,.1); border-color: rgba(66,224,192,.24); }

.panel, .quality-grid article, .provider-card, .tool-card { border: 1px solid var(--line); background: rgba(17,17,24,.86); border-radius: 18px; }
.panel { padding: 20px; }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.panel-head > div { display: flex; align-items: center; gap: 10px; }
.panel-head h3 { margin: 0; font-size: 16px; }
.panel-head > small, #promptCounter { color: var(--muted); font-size: 11px; }
.step, .flow-number { display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 10px; color: var(--accent-2); background: rgba(128,101,255,.14); font-size: 11px; }
label { display: grid; gap: 7px; color: #c9c4d5; font-size: 12px; }
label em { color: var(--danger); font-style: normal; }
input, textarea, select { width: 100%; color: var(--text); background: #0e0e15; border: 1px solid var(--line); border-radius: 11px; padding: 11px 12px; }
textarea { resize: vertical; min-height: 44px; }
select { appearance: auto; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.director-grid { display: grid; grid-template-columns: minmax(360px, .9fr) minmax(420px, 1.1fr); gap: 16px; }
#directorForm { display: grid; gap: 15px; }
.suggestions { display: flex; flex-wrap: wrap; gap: 8px; }
.suggestions button { padding: 7px 10px; color: #cbc4ec; background: rgba(128,101,255,.08); border: 1px solid rgba(128,101,255,.2); border-radius: 999px; font-size: 11px; }
.plan-panel { min-height: 530px; }
.empty-state { display: grid; place-items: center; align-content: center; gap: 6px; min-height: 180px; color: var(--muted); text-align: center; }
.empty-state > span { display: grid; place-items: center; width: 48px; height: 48px; border-radius: 50%; color: var(--accent-2); background: rgba(128,101,255,.12); font-size: 20px; }
.empty-state h3, .empty-state p { margin: 0; }
.empty-state p { max-width: 420px; font-size: 12px; }
.plan-title { margin: 0 0 4px; font-size: 21px; }
.plan-strategy { margin: 0 0 18px; color: var(--muted); }
.shot-list { display: grid; gap: 9px; }
.shot { display: grid; grid-template-columns: 46px 75px 1fr; gap: 10px; padding: 12px; border: 1px solid var(--line); border-radius: 13px; background: rgba(255,255,255,.025); }
.shot > b { color: var(--accent-2); font-size: 11px; }
.shot > span { color: var(--cyan); font-size: 11px; }
.shot h4, .shot p, .shot small { margin: 0; }
.shot p, .shot small { color: var(--muted); font-size: 11px; }
.prompt-box { margin-top: 14px; padding: 13px; border-radius: 13px; background: rgba(66,224,192,.06); border: 1px solid rgba(66,224,192,.15); }
.prompt-box p { margin: 6px 0 0; color: #d8d4e5; font-size: 12px; }
.check-list { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 12px; }
.check-list span { padding: 6px 8px; border-radius: 8px; color: var(--muted); background: rgba(255,255,255,.04); font-size: 10px; }
.plan-actions { display: flex; gap: 8px; margin-top: 14px; }

.studio-grid { display: grid; grid-template-columns: minmax(280px, 1fr) minmax(250px, .82fr) minmax(310px, 1.08fr); gap: 14px; }
.input-panel, .settings-panel, .preview-panel { display: flex; flex-direction: column; gap: 14px; min-height: 585px; }
.dropzone { position: relative; place-items: center; align-content: center; min-height: 150px; padding: 16px; border: 1px dashed rgba(128,101,255,.44); text-align: center; }
.dropzone.dragover { background: rgba(128,101,255,.09); border-color: var(--accent-2); }
.dropzone input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.dropzone .text-button { position: relative; z-index: 1; }
.drop-icon { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; background: rgba(128,101,255,.13); color: var(--accent-2); font-size: 20px; }
.dropzone strong, .dropzone small { display: block; }
.dropzone small { color: var(--muted); }
.dropzone.has-image { background-size: cover; background-position: center; }
.dropzone.has-image::before { content: ""; position: absolute; inset: 0; background: rgba(8,8,13,.72); border-radius: inherit; }
.dropzone.has-image > * { position: relative; }
.model-inline { padding: 10px 11px; border-radius: 10px; color: var(--muted); background: rgba(255,255,255,.035); font-size: 11px; }
.model-inline.ready { color: var(--cyan); background: rgba(66,224,192,.07); }
.model-inline.blocked { color: var(--warning); background: rgba(244,188,98,.07); }
.cost-warning { margin-top: auto; padding: 12px; border: 1px solid rgba(244,188,98,.18); border-radius: 12px; background: rgba(244,188,98,.06); }
.cost-warning strong { color: var(--warning); font-size: 11px; }
.cost-warning p { margin: 4px 0 0; color: var(--muted); font-size: 10px; }
.preview-stage { min-height: 270px; display: grid; place-items: center; overflow: hidden; border: 1px solid var(--line); border-radius: 15px; background: radial-gradient(circle at center, #242039, #0d0d15 72%); }
.preview-stage img, .preview-stage video { display: block; width: 100%; max-height: 360px; object-fit: contain; background: #07070a; }
.preview-stage .video-result { width: 100%; }
.preview-stage .result-actions { display: flex; justify-content: center; padding: 10px; }
.download-link { color: var(--cyan); text-decoration: none; }
.task { display: grid; gap: 4px; padding: 12px; border-radius: 12px; background: rgba(255,255,255,.035); }
.task span { color: var(--muted); font-size: 11px; }
.live-dot { color: var(--cyan); font-size: 10px; }
.task-history { display: grid; gap: 7px; max-height: 190px; overflow: auto; }
.task-history > small { color: var(--muted); }
.history-item { display: grid; grid-template-columns: 1fr auto; gap: 2px 8px; padding: 9px 10px; color: var(--text); background: rgba(255,255,255,.025); border: 1px solid var(--line); border-radius: 10px; text-align: left; }
.history-item strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 11px; }
.history-item span { color: var(--accent-2); font-size: 10px; }
.history-item small { grid-column: 1 / 3; color: var(--muted); font-size: 9px; }

.flow-board { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.flow-board article { min-height: 170px; display: grid; align-content: space-between; padding: 17px; border: 1px solid var(--line); border-radius: 17px; background: rgba(17,17,24,.8); }
.flow-board h3 { margin: 15px 0 5px; }
.flow-board p { margin: 0; color: var(--muted); font-size: 11px; }
.flow-board b { color: var(--muted); font-size: 10px; }
.flow-board article.pass { border-color: rgba(66,224,192,.34); background: rgba(66,224,192,.045); }
.flow-board article.pass b { color: var(--cyan); }
.flow-board article.fail { border-color: rgba(255,112,133,.34); background: rgba(255,112,133,.045); }
.flow-board article.fail b { color: var(--danger); }
.workflow-result { margin-top: 12px; }
.workflow-result p { margin: 5px 0 0; color: var(--muted); }
.workflow-result.ready { border-color: rgba(66,224,192,.25); }
.quality-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-top: 12px; }
.quality-grid article { padding: 17px; }
.quality-grid span { color: var(--cyan); font-size: 9px; letter-spacing: .15em; }
.quality-grid h3 { margin: 10px 0 4px; }
.quality-grid p { margin: 0; color: var(--muted); font-size: 11px; }

.readiness, .security-strip { display: flex; align-items: center; gap: 13px; margin: 12px 0; padding: 15px 17px; border: 1px solid var(--line); border-radius: 15px; background: rgba(255,255,255,.025); }
.readiness p, .security-strip p { margin: 3px 0 0; color: var(--muted); font-size: 11px; }
.pulse-dot { width: 10px; height: 10px; flex: 0 0 auto; border-radius: 50%; background: var(--warning); box-shadow: 0 0 0 6px rgba(244,188,98,.1); }
.readiness.ready .pulse-dot { background: var(--cyan); box-shadow: 0 0 0 6px rgba(66,224,192,.1); }
.provider-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.provider-card { padding: 17px; }
.provider-card > span { color: var(--muted); font-size: 9px; letter-spacing: .14em; }
.provider-card h3 { margin: 10px 0 5px; }
.provider-card p { min-height: 38px; margin: 0; color: var(--muted); font-size: 11px; }
.provider-meta { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 12px; }
.provider-meta span { padding: 4px 6px; border-radius: 6px; background: rgba(255,255,255,.04); color: var(--muted); font-size: 9px; }
.provider-state { margin-top: 13px; color: var(--warning); font-size: 10px; }
.provider-state.configured { color: var(--cyan); }
.security-strip span { font-size: 20px; }

.tool-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.tool-card { min-height: 190px; display: grid; align-content: start; padding: 18px; color: var(--text); text-align: left; transition: .2s ease; }
.tool-card:hover, .tool-card.active { transform: translateY(-2px); border-color: rgba(128,101,255,.4); background: rgba(128,101,255,.08); }
.tool-card > span { color: var(--cyan); font-size: 10px; }
.tool-card h3 { margin: 18px 0 6px; }
.tool-card p { margin: 0; color: var(--muted); font-size: 11px; }
.tool-card b { margin-top: auto; padding-top: 17px; color: var(--accent-2); font-size: 10px; }
.tool-workspace { min-height: 280px; margin-top: 12px; }
.tool-form { display: grid; gap: 13px; max-width: 760px; }
.tool-result { margin-top: 14px; padding: 13px; border-radius: 12px; background: rgba(66,224,192,.055); border: 1px solid rgba(66,224,192,.13); }
.tool-result p { margin: 4px 0; color: var(--muted); }
.tool-video { width: min(100%, 720px); max-height: 360px; background: #000; }
.cover-canvas { max-width: 100%; border-radius: 12px; }

.modal { position: fixed; inset: 0; display: grid; place-items: center; padding: 20px; z-index: 50; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.72); backdrop-filter: blur(8px); }
.modal-card { position: relative; width: min(430px, 100%); display: grid; gap: 14px; padding: 26px; border: 1px solid var(--line); border-radius: 20px; background: var(--surface-2); box-shadow: var(--shadow); }
.modal-card h2, .modal-card p { margin: 0; }
.modal-card p { color: var(--muted); }
.modal-close { position: absolute; right: 13px; top: 11px; color: var(--muted); background: transparent; border: 0; font-size: 24px; }
.form-error { min-height: 18px; color: var(--danger); font-size: 11px; }
.toast { position: fixed; right: 24px; bottom: 24px; z-index: 80; width: min(360px, calc(100vw - 32px)); display: grid; gap: 3px; padding: 13px 15px; border: 1px solid var(--line); border-radius: 13px; background: var(--surface-3); box-shadow: var(--shadow); }
.toast span { color: var(--muted); font-size: 11px; }
.toast.error { border-color: rgba(255,112,133,.32); }

@media (max-width: 1180px) {
  .studio-grid { grid-template-columns: 1fr 1fr; }
  .preview-panel { grid-column: 1 / 3; min-height: auto; }
  .provider-grid, .tool-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .shell { display: block; width: 100%; }
  .sidebar { width: 100%; position: static; height: auto; padding: 14px; overflow: hidden; border-right: 0; border-bottom: 1px solid var(--line); }
  .brand { padding-bottom: 12px; }
  nav { min-width: 0; width: 100%; display: flex; overflow-x: auto; }
  .nav { flex: 0 0 100px; grid-template-columns: 1fr; place-items: center; min-width: 0; text-align: center; }
  .nav > span { grid-row: auto; }
  .nav small { display: none; }
  .sidebar-foot { display: none; }
  .main { padding: 20px 16px 44px; }
  .director-grid { grid-template-columns: 1fr; }
  .flow-board { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 680px) {
  .topbar { align-items: flex-start; }
  .system-state { display: none; }
  .top-actions .primary { display: none; }
  .hero { align-items: flex-start; padding: 20px; }
  .hero-badge { display: none; }
  .studio-grid, .form-grid, .quality-grid, .provider-grid, .tool-grid, .flow-board { grid-template-columns: 1fr; }
  .preview-panel { grid-column: auto; }
  .input-panel, .settings-panel, .preview-panel { min-height: auto; }
  .shot { grid-template-columns: 42px 1fr; }
  .shot > div { grid-column: 1 / 3; }
  .hero.compact { display: grid; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}