:root {
    color-scheme: dark;
    --bg: #070a12;
    --bg-elevated: rgba(13, 18, 31, 0.82);
    --panel: rgba(12, 17, 29, 0.74);
    --panel-strong: #111827;
    --line: rgba(255, 255, 255, 0.09);
    --line-strong: rgba(255, 255, 255, 0.16);
    --text: #f5f7fb;
    --muted: #8e98ad;
    --muted-strong: #b5bdd0;
    --accent: #67e8f9;
    --accent-2: #8b5cf6;
    --success: #56e3aa;
    --danger: #ff6b86;
    --warning: #f9c74f;
    --radius-sm: 12px;
    --radius-md: 18px;
    --radius-lg: 26px;
    --shadow: 0 24px 80px rgba(0, 0, 0, 0.34);
    --font: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--bg); }
body {
    margin: 0;
    min-height: 100vh;
    overflow-x: hidden;
    font-family: var(--font);
    color: var(--text);
    background:
        radial-gradient(circle at 75% 5%, rgba(67, 56, 202, 0.16), transparent 34%),
        radial-gradient(circle at 8% 88%, rgba(8, 145, 178, 0.12), transparent 30%),
        var(--bg);
}
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button { color: inherit; }
button:focus-visible, input:focus-visible, a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}
[hidden] { display: none !important; }

.ambient {
    position: fixed;
    z-index: -2;
    width: 34rem;
    height: 34rem;
    border-radius: 50%;
    filter: blur(110px);
    opacity: .11;
    pointer-events: none;
}
.ambient-one { top: -17rem; right: -7rem; background: #6148ff; }
.ambient-two { bottom: -22rem; left: -10rem; background: #00c5dc; }
.grid-overlay {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    opacity: .13;
    background-image:
        linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
    background-size: 58px 58px;
    mask-image: linear-gradient(to bottom, black, transparent 84%);
}

.app-header {
    height: 74px;
    padding: 0 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--line);
    background: rgba(7, 10, 18, .72);
    backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 30;
}
.brand { display: flex; align-items: center; gap: 12px; color: inherit; text-decoration: none; }
.brand-mark {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(103, 232, 249, .28);
    border-radius: 13px;
    background: linear-gradient(145deg, rgba(103,232,249,.13), rgba(139,92,246,.12));
    box-shadow: inset 0 1px rgba(255,255,255,.07), 0 8px 30px rgba(103,232,249,.08);
}
.brand-mark svg { width: 28px; fill: none; stroke: var(--accent); stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.brand-copy { display: grid; gap: 1px; }
.brand-copy strong { font-size: 16px; letter-spacing: -.02em; }
.brand-copy small { color: var(--muted); font-size: 10px; letter-spacing: .16em; text-transform: uppercase; }
.header-meta { display: flex; align-items: center; gap: 10px; }
.system-pill {
    display: flex;
    align-items: center;
    gap: 8px;
    height: 36px;
    padding: 0 13px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--muted-strong);
    font-size: 12px;
    background: rgba(255,255,255,.03);
}
.status-dot, .live-indicator {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 0 5px rgba(86,227,170,.08), 0 0 15px rgba(86,227,170,.5);
}
.system-pill.is-degraded .status-dot { background: var(--warning); box-shadow: 0 0 0 5px rgba(249,199,79,.08); }
.icon-button {
    width: 36px;
    height: 36px;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: rgba(255,255,255,.03);
    cursor: pointer;
}
.icon-button svg { width: 18px; fill: none; stroke: var(--muted-strong); stroke-width: 1.7; stroke-linecap: round; }
.icon-button:hover { border-color: var(--line-strong); background: rgba(255,255,255,.055); }

.studio-shell {
    min-height: calc(100vh - 74px);
    display: grid;
    grid-template-columns: minmax(380px, 470px) minmax(0, 1fr);
}
.control-panel {
    padding: 42px 34px 54px;
    border-right: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(10,14,24,.72), rgba(8,11,19,.48));
}
.panel-intro { margin-bottom: 35px; }
.eyebrow {
    color: var(--accent);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .18em;
    text-transform: uppercase;
}
.panel-intro h1 {
    margin: 9px 0 10px;
    font-size: clamp(29px, 3vw, 40px);
    line-height: 1.05;
    letter-spacing: -.045em;
}
.panel-intro p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.65; max-width: 390px; }
.form-section { padding: 0 0 28px; margin: 0 0 28px; border-bottom: 1px solid var(--line); }
.form-section.compact-section { padding-bottom: 26px; margin-bottom: 18px; }
.section-heading { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.section-heading > div { display: flex; align-items: center; gap: 10px; }
.step-number { color: rgba(103,232,249,.64); font: 700 9px/1 var(--font); letter-spacing: .09em; }
.section-heading h2 { margin: 0; font-size: 13px; font-weight: 650; letter-spacing: -.01em; }
.section-note { color: var(--muted); font-size: 11px; }

.segment-control {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    padding: 5px;
    border: 1px solid var(--line);
    border-radius: 15px;
    background: rgba(255,255,255,.025);
}
.segment {
    min-width: 0;
    height: 46px;
    border: 0;
    border-radius: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    color: var(--muted);
    background: transparent;
    cursor: pointer;
    font-size: 11px;
    white-space: nowrap;
    transition: .22s ease;
}
.segment svg { width: 16px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.segment:hover { color: var(--muted-strong); }
.segment.is-active {
    color: var(--text);
    background: linear-gradient(145deg, rgba(103,232,249,.12), rgba(139,92,246,.12));
    box-shadow: inset 0 0 0 1px rgba(103,232,249,.14), 0 8px 28px rgba(0,0,0,.15);
}

.route-builder { position: relative; display: grid; gap: 10px; }
.route-line { position: absolute; left: 12px; top: 29px; bottom: 29px; width: 1px; background: linear-gradient(to bottom, var(--accent), rgba(139,92,246,.4)); opacity: .5; }
.route-stop { position: relative; display: grid; grid-template-columns: 25px minmax(0,1fr) auto; align-items: center; gap: 11px; transition: .24s ease; }
.route-stop.is-hidden { display: none; }
.stop-node { width: 25px; height: 25px; display: grid; place-items: center; position: relative; z-index: 2; }
.stop-node span { width: 9px; height: 9px; border-radius: 50%; border: 2px solid var(--accent); background: var(--bg); box-shadow: 0 0 0 5px rgba(103,232,249,.07); }
.destination-node span { border-color: #a78bfa; box-shadow: 0 0 0 5px rgba(167,139,250,.07); }
.waypoint-node span { width: 7px; height: 7px; border-color: #8fa5bf; box-shadow: none; }
.field-shell {
    min-width: 0;
    display: grid;
    gap: 4px;
    padding: 9px 13px 10px;
    border: 1px solid var(--line);
    border-radius: 13px;
    background: rgba(255,255,255,.025);
    transition: .2s ease;
}
.field-shell:focus-within { border-color: rgba(103,232,249,.38); background: rgba(103,232,249,.035); box-shadow: 0 0 0 3px rgba(103,232,249,.045); }
.field-label { color: var(--muted); font-size: 9px; letter-spacing: .06em; text-transform: uppercase; }
.field-shell input { width: 100%; min-width: 0; padding: 0; border: 0; outline: 0; color: var(--text); background: transparent; font-size: 14px; }
.field-shell input::placeholder { color: #576176; }
.remove-stop { width: 28px; height: 28px; border: 0; border-radius: 50%; background: transparent; color: #687287; font-size: 19px; cursor: pointer; }
.remove-stop:hover { color: var(--danger); background: rgba(255,107,134,.08); }
.add-stop-button { margin: 12px 0 0 36px; padding: 6px 0; border: 0; background: transparent; color: var(--muted-strong); cursor: pointer; font-size: 11px; }
.add-stop-button span { color: var(--accent); margin-right: 4px; }
.add-stop-button:hover { color: var(--text); }
.add-stop-button[disabled] { opacity: .35; cursor: not-allowed; }
.field-hint { margin: 8px 0 0 36px; color: #657087; font-size: 10px; line-height: 1.5; }

.style-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.style-card { min-width: 0; padding: 0; border: 0; background: transparent; color: var(--muted); cursor: pointer; text-align: left; }
.style-preview { position: relative; display: block; height: 58px; overflow: hidden; border: 1px solid var(--line); border-radius: 11px; background: #17344a; transition: .22s ease; }
.style-preview::before, .style-preview::after { content: ""; position: absolute; border-radius: 50%; background: rgba(200,220,210,.55); filter: blur(.3px); }
.style-preview::before { width: 34px; height: 20px; left: 7px; top: 10px; transform: rotate(-12deg); }
.style-preview::after { width: 25px; height: 16px; right: 5px; bottom: 10px; transform: rotate(18deg); }
.style-preview i { position: absolute; z-index: 2; left: 9px; top: 40px; width: 42px; height: 1px; background: rgba(255,255,255,.8); transform: rotate(-22deg); transform-origin: left; }
.style-preview b { position: absolute; z-index: 3; right: 9px; top: 19px; width: 5px; height: 5px; border-radius: 50%; background: #fff; box-shadow: 0 0 9px #fff; }
.style-vintage { background: #b79b72; filter: sepia(.45); }
.style-vintage::before, .style-vintage::after { background: rgba(78,67,47,.48); }
.style-dark { background: linear-gradient(145deg,#0c1320,#121d2c); }
.style-dark::before, .style-dark::after { background: rgba(91,116,131,.34); }
.style-dark i { background: var(--accent); box-shadow: 0 0 7px var(--accent); }
.style-atlas { background: #b7a77f; }
.style-atlas::before, .style-atlas::after { background: rgba(61,72,73,.47); }
.style-papyrus { background: #c5aa7e; background-image: repeating-linear-gradient(15deg, transparent 0 4px, rgba(70,50,30,.035) 5px); }
.style-papyrus::before, .style-papyrus::after { background: rgba(75,58,42,.45); }
.style-name { display: block; margin-top: 7px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 9px; text-align: center; }
.style-card:hover .style-preview { transform: translateY(-2px); border-color: var(--line-strong); }
.style-card.is-selected .style-preview { border-color: rgba(103,232,249,.68); box-shadow: 0 0 0 2px rgba(103,232,249,.09), 0 10px 25px rgba(0,0,0,.18); }
.style-card.is-selected .style-name { color: var(--text); }

.duration-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; }
.duration-card { height: 55px; border: 1px solid var(--line); border-radius: 13px; display: grid; place-content: center; gap: 1px; background: rgba(255,255,255,.02); color: var(--muted); cursor: pointer; transition: .2s ease; }
.duration-card strong { font-size: 14px; color: var(--muted-strong); }
.duration-card span { font-size: 9px; }
.duration-card:hover { border-color: var(--line-strong); }
.duration-card.is-selected { border-color: rgba(103,232,249,.35); color: var(--accent); background: linear-gradient(145deg,rgba(103,232,249,.075),rgba(139,92,246,.055)); }
.duration-card.is-selected strong { color: var(--text); }

.customize-card { margin-bottom: 24px; border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,.022); overflow: hidden; }
.customize-toggle { width: 100%; height: 52px; padding: 0 15px; border: 0; display: flex; align-items: center; justify-content: space-between; background: transparent; cursor: pointer; }
.customize-toggle > span { display: flex; align-items: center; gap: 9px; color: var(--muted-strong); font-size: 12px; }
.customize-toggle svg { width: 17px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.chevron { color: var(--muted); transition: transform .2s ease; }
.customize-toggle[aria-expanded="true"] .chevron { transform: rotate(180deg); }
.customize-body { padding: 2px 15px 15px; border-top: 1px solid var(--line); }
.option-block { padding: 15px 0; border-bottom: 1px solid var(--line); }
.option-title { display: block; margin-bottom: 10px; color: var(--muted); font-size: 10px; text-transform: uppercase; letter-spacing: .08em; }
.mini-segments { display: grid; grid-template-columns: 1fr 1fr; padding: 4px; border: 1px solid var(--line); border-radius: 12px; }
.mini-segments button { height: 35px; border: 0; border-radius: 9px; background: transparent; color: var(--muted); font-size: 11px; cursor: pointer; }
.mini-segments button.is-active { background: rgba(103,232,249,.08); color: var(--text); box-shadow: inset 0 0 0 1px rgba(103,232,249,.12); }
.icon-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 8px; }
.icon-choice { height: 45px; border: 1px solid var(--line); border-radius: 11px; background: rgba(255,255,255,.02); color: var(--muted); cursor: pointer; }
.icon-choice svg { width: 23px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.icon-choice:first-child svg, .icon-choice:nth-child(3) svg { fill: currentColor; stroke: none; }
.icon-choice:hover { color: var(--muted-strong); }
.icon-choice.is-selected { color: var(--accent); border-color: rgba(103,232,249,.3); background: rgba(103,232,249,.06); }
.toggle-row { display: flex; align-items: center; gap: 12px; padding: 15px 0 0; cursor: pointer; }
.toggle-row + .toggle-row { padding-top: 14px; }
.toggle-row > span:first-child { display: grid; gap: 3px; flex: 1; }
.toggle-row strong { font-size: 11px; font-weight: 600; }
.toggle-row small { color: var(--muted); font-size: 9px; }
.toggle-row input[type="checkbox"] { position: absolute; opacity: 0; pointer-events: none; }
.switch { width: 38px; height: 22px; padding: 3px; border-radius: 999px; background: #252c3a; transition: .2s ease; }
.switch::after { content:""; display:block; width:16px; height:16px; border-radius:50%; background:#8590a4; transition:.2s ease; }
.toggle-row input:checked + .switch { background: rgba(103,232,249,.24); box-shadow: inset 0 0 0 1px rgba(103,232,249,.18); }
.toggle-row input:checked + .switch::after { transform: translateX(16px); background: var(--accent); box-shadow: 0 0 12px rgba(103,232,249,.5); }
.toggle-row.is-disabled { opacity: .42; pointer-events: none; }

.generate-button {
    width: 100%;
    min-height: 62px;
    padding: 9px 15px 9px 10px;
    border: 1px solid rgba(103,232,249,.28);
    border-radius: 17px;
    display: grid;
    grid-template-columns: 43px 1fr auto;
    align-items: center;
    gap: 11px;
    color: #071019;
    background: linear-gradient(105deg,#67e8f9 0%,#8be8ea 44%,#a78bfa 115%);
    box-shadow: 0 15px 42px rgba(77,208,226,.16), inset 0 1px rgba(255,255,255,.6);
    cursor: pointer;
    text-align: left;
    transition: transform .2s ease, box-shadow .2s ease, opacity .2s ease;
}
.generate-button:hover { transform: translateY(-2px); box-shadow: 0 19px 48px rgba(77,208,226,.24), inset 0 1px rgba(255,255,255,.6); }
.generate-button:active { transform: translateY(0); }
.generate-button:disabled { opacity: .48; cursor: not-allowed; transform: none; }
.generate-icon { width: 43px; height: 43px; display: grid; place-items: center; border-radius: 12px; background: rgba(7,16,25,.12); }
.generate-icon svg { width: 22px; fill: currentColor; }
.button-copy { display: grid; gap: 2px; }
.button-copy strong { font-size: 13px; }
.button-copy small { font-size: 9px; opacity: .65; letter-spacing: .05em; }
.button-arrow { font-size: 20px; }
.mobile-action { display: none; }

.preview-panel { min-width: 0; min-height: calc(100vh - 74px); padding: 26px 28px 28px; display: flex; flex-direction: column; }
.preview-toolbar, .preview-footer { min-height: 39px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.preview-title { display: flex; align-items: center; gap: 10px; color: var(--muted-strong); font-size: 11px; text-transform: uppercase; letter-spacing: .08em; }
.live-indicator { width: 6px; height: 6px; }
.preview-specs { display: flex; gap: 15px; color: #657087; font-size: 9px; letter-spacing: .08em; }
.preview-stage {
    --preview-ocean: #0a1320;
    --preview-land: #233542;
    --preview-grid: rgba(103,232,249,.08);
    --preview-route: #67e8f9;
    position: relative;
    flex: 1;
    min-height: 480px;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    background: #080c14;
    box-shadow: var(--shadow), inset 0 1px rgba(255,255,255,.04);
}
.preview-stage[data-preview-style="0"] { --preview-ocean:#1a526d; --preview-land:#b9cdbf; --preview-grid:rgba(255,255,255,.10); --preview-route:#fff; }
.preview-stage[data-preview-style="1"] { --preview-ocean:#a58c67; --preview-land:#665c47; --preview-grid:rgba(49,37,25,.12); --preview-route:#923f39; }
.preview-stage[data-preview-style="2"] { --preview-ocean:#09111d; --preview-land:#263745; --preview-grid:rgba(103,232,249,.08); --preview-route:#67e8f9; }
.preview-stage[data-preview-style="3"] { --preview-ocean:#b6a985; --preview-land:#58665d; --preview-grid:rgba(51,49,39,.11); --preview-route:#3f477f; }
.preview-stage[data-preview-style="4"] { --preview-ocean:#b99c6e; --preview-land:#655944; --preview-grid:rgba(57,41,24,.11); --preview-route:#403c72; }
.screen-glow { position:absolute; inset: -40%; background: radial-gradient(circle at 60% 45%, color-mix(in srgb,var(--preview-route) 11%, transparent), transparent 34%); pointer-events:none; }
.map-canvas { position: absolute; inset: 0; overflow: hidden; background: var(--preview-ocean); transition: background .35s ease; }
.map-canvas::after { content:""; position:absolute; inset:0; pointer-events:none; background: radial-gradient(circle,transparent 35%,rgba(0,0,0,.44) 120%); }
.world-art { width:100%; height:100%; color:var(--preview-route); }
.geo-lines path { fill:none; stroke:var(--preview-grid); stroke-width:1; }
.continents path { fill:var(--preview-land); stroke:color-mix(in srgb,var(--preview-land) 75%,white); stroke-width:.7; opacity:.83; transition:fill .35s ease; }
.route-shadow { fill:none; stroke:#000; stroke-width:8; stroke-linecap:round; opacity:.36; }
.preview-route { fill:none; stroke:url(#routeGradient); stroke-width:4; stroke-linecap:round; stroke-dasharray:11 8; animation:routeFlow 5s linear infinite; }
.preview-stage[data-route-style="solid"] .preview-route { stroke-dasharray:none; }
.map-pin circle { transition:fill .35s ease,stroke .35s ease; }
.pin-pulse { fill:none; stroke:var(--preview-route); stroke-width:1; opacity:.2; animation:pinPulse 2.3s ease-out infinite; transform-origin:center; }
.pin-ring { fill:var(--preview-ocean); stroke:var(--preview-route); stroke-width:3; }
.pin-core { fill:#fff; }
.pin-end .pin-pulse { animation-delay:.7s; }
.preview-plane { color:var(--preview-route); offset-path:path("M255 350 C420 105, 615 120, 790 320"); animation:planeTravel 7s cubic-bezier(.42,0,.58,1) infinite; }
.preview-plane path { fill:#fff; transform:rotate(-12deg); }
.route-label { position:absolute; z-index:4; min-width:110px; padding:9px 12px; border:1px solid rgba(255,255,255,.12); border-radius:11px; background:rgba(6,10,18,.72); backdrop-filter:blur(12px); box-shadow:0 12px 30px rgba(0,0,0,.22); }
.route-label span { display:block; margin-bottom:3px; color:var(--preview-route); font-size:7px; letter-spacing:.13em; text-transform:uppercase; }
.route-label strong { display:block; max-width:180px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; font-size:11px; }
.route-label-start { left:18%; bottom:28%; }
.route-label-end { right:13%; top:43%; }
.preview-watermark { position:absolute; z-index:4; left:20px; bottom:17px; display:flex; align-items:center; gap:6px; color:rgba(255,255,255,.3); font-size:8px; letter-spacing:.18em; }
.mini-mark { width:11px; height:11px; border:1px solid currentColor; border-radius:3px; transform:rotate(45deg); }
.empty-overlay, .processing-overlay, .result-overlay { position:absolute; inset:0; z-index:10; }
.empty-overlay { display:grid; place-content:center; justify-items:center; text-align:center; background:rgba(5,8,14,.47); backdrop-filter:blur(4px); opacity:0; pointer-events:none; transition:.25s ease; }
.empty-overlay.is-visible { opacity:1; pointer-events:auto; }
.empty-icon { width:60px; height:60px; display:grid; place-items:center; border:1px solid rgba(103,232,249,.18); border-radius:18px; background:linear-gradient(145deg,rgba(103,232,249,.08),rgba(139,92,246,.07)); }
.empty-icon svg { width:34px; fill:none; stroke:var(--accent); stroke-width:2; stroke-linecap:round; stroke-linejoin:round; }
.empty-overlay h3 { margin:16px 0 5px; font-size:17px; }
.empty-overlay p { margin:0; color:var(--muted); font-size:11px; }
.processing-overlay { display:grid; place-content:center; justify-items:center; padding:25px; text-align:center; background:rgba(6,9,16,.86); backdrop-filter:blur(14px); }
.progress-orbit { width:136px; height:136px; padding:8px; border-radius:50%; background:conic-gradient(var(--accent) var(--progress),rgba(255,255,255,.065) 0); position:relative; box-shadow:0 0 50px rgba(103,232,249,.08); }
.progress-orbit::before { content:""; position:absolute; inset:-14px; border:1px solid rgba(103,232,249,.09); border-radius:50%; animation:orbit 8s linear infinite; }
.progress-orbit::after { content:""; position:absolute; width:7px; height:7px; top:-17px; left:50%; border-radius:50%; background:var(--accent); box-shadow:0 0 14px var(--accent); }
.progress-inner { width:100%; height:100%; display:grid; place-content:center; border-radius:50%; background:#0b101b; box-shadow:inset 0 0 0 1px rgba(255,255,255,.04); }
.progress-inner strong { font-size:30px; letter-spacing:-.05em; }
.progress-inner span { color:var(--muted); font-size:8px; letter-spacing:.14em; text-transform:uppercase; }
.processing-copy { margin-top:25px; }
.queue-label { color:var(--accent); font-size:9px; letter-spacing:.12em; text-transform:uppercase; }
.processing-copy h3 { margin:7px 0 7px; font-size:19px; }
.processing-copy p { margin:0; color:var(--muted); font-size:11px; }
.stage-track { width:min(290px,75vw); margin-top:24px; display:grid; grid-template-columns:repeat(4,1fr); gap:6px; }
.stage-track span { height:2px; border-radius:2px; background:rgba(255,255,255,.08); transition:.3s ease; }
.stage-track span.is-complete { background:var(--accent); box-shadow:0 0 10px rgba(103,232,249,.4); }
.processing-note { margin:18px 0 0; color:#586277; font-size:9px; }
.result-overlay { background:#05070b; }
.result-overlay video { width:100%; height:100%; object-fit:contain; background:#05070b; }
.result-topbar { position:absolute; top:15px; left:15px; }
.ready-pill { display:flex; align-items:center; gap:7px; height:30px; padding:0 11px; border:1px solid rgba(86,227,170,.18); border-radius:999px; color:#b8f6da; background:rgba(5,15,12,.66); backdrop-filter:blur(10px); font-size:9px; letter-spacing:.08em; text-transform:uppercase; }
.ready-pill i { width:6px; height:6px; border-radius:50%; background:var(--success); box-shadow:0 0 10px var(--success); }
.preview-footer { padding-top:15px; }
.route-summary { min-width:0; display:grid; gap:3px; }
.summary-kicker { color:#657087; font-size:8px; letter-spacing:.12em; text-transform:uppercase; }
.route-summary strong { max-width:min(54vw,650px); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; color:var(--muted-strong); font-size:11px; }
.preview-actions { display:flex; gap:9px; }
.secondary-button, .download-button { height:38px; padding:0 14px; border-radius:11px; display:inline-flex; align-items:center; justify-content:center; gap:7px; text-decoration:none; font-size:10px; cursor:pointer; }
.secondary-button { border:1px solid var(--line); color:var(--muted-strong); background:rgba(255,255,255,.025); }
.download-button { border:1px solid rgba(103,232,249,.22); color:#071019; background:var(--accent); font-weight:700; }
.download-button svg { width:15px; fill:none; stroke:currentColor; stroke-width:2; stroke-linecap:round; stroke-linejoin:round; }

.toast-stack { position:fixed; z-index:100; right:20px; bottom:20px; display:grid; gap:10px; width:min(360px,calc(100vw - 40px)); }
.toast { padding:14px 15px; border:1px solid var(--line-strong); border-radius:14px; display:grid; grid-template-columns:auto 1fr auto; align-items:start; gap:10px; background:rgba(13,18,31,.94); box-shadow:0 18px 50px rgba(0,0,0,.35); backdrop-filter:blur(16px); animation:toastIn .25s ease both; }
.toast-icon { width:21px; height:21px; display:grid; place-items:center; border-radius:50%; color:var(--danger); background:rgba(255,107,134,.1); font-weight:700; }
.toast strong { display:block; margin-bottom:3px; font-size:11px; }
.toast p { margin:0; color:var(--muted); font-size:10px; line-height:1.5; }
.toast button { border:0; background:transparent; color:var(--muted); cursor:pointer; }
.toast.is-success .toast-icon { color:var(--success); background:rgba(86,227,170,.1); }

.about-dialog { width:min(470px,calc(100vw - 30px)); padding:28px; border:1px solid var(--line-strong); border-radius:22px; color:var(--text); background:rgba(13,18,31,.96); box-shadow:0 30px 100px rgba(0,0,0,.55); backdrop-filter:blur(20px); }
.about-dialog::backdrop { background:rgba(3,5,9,.68); backdrop-filter:blur(5px); }
.about-dialog h2 { margin:9px 0 10px; font-size:27px; letter-spacing:-.04em; }
.about-dialog p { color:var(--muted); font-size:13px; line-height:1.7; }
.dialog-close { position:absolute; top:12px; right:12px; width:32px; height:32px; border:0; border-radius:50%; color:var(--muted); background:rgba(255,255,255,.04); cursor:pointer; font-size:19px; }
.dialog-stats { margin-top:20px; padding-top:18px; border-top:1px solid var(--line); display:grid; grid-template-columns:repeat(3,1fr); gap:8px; }
.dialog-stats span { color:var(--muted); font-size:9px; }
.dialog-stats strong { display:block; color:var(--text); font-size:17px; }

@keyframes routeFlow { to { stroke-dashoffset:-76; } }
@keyframes pinPulse { 0%{transform:scale(.4);opacity:.6} 80%,100%{transform:scale(1.8);opacity:0} }
@keyframes planeTravel { 0%,8%{offset-distance:0%;opacity:0} 15%{opacity:1} 83%{opacity:1} 92%,100%{offset-distance:100%;opacity:0} }
@keyframes orbit { to { transform:rotate(360deg); } }
@keyframes toastIn { from{opacity:0;transform:translateY(8px)} to{opacity:1;transform:none} }

@media (max-width: 1120px) {
    .studio-shell { grid-template-columns: 410px minmax(0,1fr); }
    .control-panel { padding-inline:26px; }
    .style-grid { grid-template-columns:repeat(3,1fr); row-gap:13px; }
    .style-preview { height:65px; }
}

@media (max-width: 900px) {
    body { padding-bottom:92px; }
    .app-header { height:66px; padding:0 18px; }
    .brand-mark { width:38px; height:38px; }
    .brand-copy small { display:none; }
    .system-pill { height:33px; padding-inline:10px; }
    .studio-shell { min-height:auto; display:flex; flex-direction:column-reverse; }
    .preview-panel { min-height:auto; padding:16px 16px 20px; }
    .preview-stage { min-height:54vw; max-height:560px; aspect-ratio:16/9; }
    .control-panel { padding:28px 18px 35px; border-right:0; border-top:1px solid var(--line); }
    .panel-intro { margin-bottom:28px; }
    .desktop-action { display:none; }
    .mobile-action { position:fixed; z-index:40; left:0; right:0; bottom:0; display:block; padding:12px 16px calc(12px + env(safe-area-inset-bottom)); border-top:1px solid var(--line); background:rgba(7,10,18,.88); backdrop-filter:blur(20px); }
    .mobile-action .generate-button { min-height:58px; max-width:620px; margin:auto; }
    .route-label { transform:scale(.82); }
    .route-label-start { left:13%; bottom:22%; }
    .route-label-end { right:8%; }
}

@media (max-width: 600px) {
    .header-meta .system-pill { font-size:0; width:34px; padding:0; justify-content:center; }
    .preview-toolbar { min-height:32px; }
    .preview-specs span:last-child { display:none; }
    .preview-stage { min-height:230px; border-radius:20px; }
    .preview-footer { align-items:flex-end; }
    .route-summary strong { max-width:55vw; }
    .panel-intro h1 { font-size:31px; }
    .segment { height:44px; gap:5px; font-size:9px; }
    .segment svg { width:14px; }
    .style-grid { grid-template-columns:repeat(3,1fr); }
    .style-card:nth-child(4), .style-card:nth-child(5) { grid-column:span 1; }
    .style-preview { height:61px; }
    .customize-body { padding-inline:13px; }
    .route-label { display:none; }
    .preview-watermark { left:13px; bottom:10px; }
    .progress-orbit { width:112px; height:112px; }
    .progress-inner strong { font-size:25px; }
    .processing-copy { margin-top:18px; }
    .processing-copy h3 { font-size:16px; }
    .result-topbar { top:9px; left:9px; }
    .download-button { font-size:0; width:38px; padding:0; }
    .download-button svg { width:16px; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior:auto !important; animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; }
}