:root {
    --bg: #f4efe6;
    --bg-strong: #e7ddd0;
    --surface: rgba(255, 252, 246, 0.9);
    --surface-strong: #fffaf2;
    --ink: #16212f;
    --ink-soft: #425061;
    --accent: #b85c38;
    --accent-strong: #8b3e1f;
    --line: rgba(22, 33, 47, 0.12);
    --success: #1f6b4f;
    --warn: #a35a1c;
    --shadow: 0 24px 60px rgba(22, 33, 47, 0.12);
    --radius: 24px;
    --radius-sm: 16px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(184, 92, 56, 0.16), transparent 28%),
        radial-gradient(circle at bottom right, rgba(22, 33, 47, 0.12), transparent 32%),
        linear-gradient(180deg, #f8f4ed 0%, var(--bg) 55%, #ede3d7 100%);
    min-height: 100vh;
}

button,
input,
select,
a {
    font: inherit;
}

canvas,
video {
    width: 100%;
    display: block;
}

.page-shell {
    width: min(1200px, calc(100% - 32px));
    margin: 0 auto;
    padding: 40px 0 56px;
}

.hero {
    padding: 18px 0 28px;
}

.eyebrow {
    margin: 0 0 10px;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--accent-strong);
}

.hero h1 {
    margin: 0;
    max-width: 13ch;
    font-size: clamp(2.4rem, 5vw, 4.6rem);
    line-height: 0.96;
}

.hero-copy {
    max-width: 720px;
    margin: 18px 0 0;
    font-size: 1.08rem;
    line-height: 1.65;
    color: var(--ink-soft);
}

.hero-notes {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 22px;
}

.hero-notes span {
    padding: 10px 14px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: rgba(255, 250, 242, 0.72);
    color: var(--ink-soft);
}

.studio-shell {
    display: grid;
    grid-template-columns: minmax(300px, 360px) minmax(0, 1fr);
    gap: 22px;
    align-items: start;
}

.panel {
    background: var(--surface);
    border: 1px solid rgba(255, 255, 255, 0.65);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    backdrop-filter: blur(14px);
}

.controls-panel,
.preview-panel {
    padding: 22px;
}

.panel-heading h2 {
    margin: 0;
    font-size: 1.3rem;
}

.panel-heading p {
    margin: 8px 0 0;
    color: var(--ink-soft);
    line-height: 1.55;
}

.status-card,
.advisory-card,
.progress-card,
.download-card,
.info-card,
.uploader,
.canvas-card,
.video-result {
    margin-top: 18px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--line);
    background: var(--surface-strong);
}

.status-card,
.advisory-card,
.progress-card,
.download-card,
.info-card,
.uploader,
.video-result {
    padding: 16px;
}

.status-card[data-tone="success"] {
    border-color: rgba(31, 107, 79, 0.28);
    background: rgba(238, 251, 245, 0.9);
}

.status-card[data-tone="warn"] {
    border-color: rgba(163, 90, 28, 0.28);
    background: rgba(255, 246, 233, 0.94);
}

.status-card[data-tone="error"] {
    border-color: rgba(184, 32, 32, 0.28);
    background: rgba(255, 240, 240, 0.94);
}

.advisory-card[data-tone="warn"] {
    border-color: rgba(163, 90, 28, 0.28);
    background: rgba(255, 246, 233, 0.94);
}

.advisory-card[data-tone="success"] {
    border-color: rgba(31, 107, 79, 0.24);
    background: rgba(238, 251, 245, 0.9);
}

.status-label {
    margin: 0 0 6px;
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-soft);
}

.status-copy,
#advisoryText,
#fileMeta {
    margin: 0;
    line-height: 1.55;
}

.progress-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
}

#progressPercent {
    margin: 0;
    font-weight: 700;
    color: var(--ink);
}

.progress-bar {
    overflow: hidden;
    width: 100%;
    height: 10px;
    margin-top: 10px;
    border-radius: 999px;
    background: rgba(22, 33, 47, 0.08);
}

#progressFill {
    display: block;
    width: 0%;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--accent), #d98962);
    transition: width 0.18s ease;
}

.progress-copy {
    margin: 10px 0 0;
    color: var(--ink-soft);
    line-height: 1.5;
}

.uploader {
    display: grid;
    gap: 10px;
    text-align: center;
    border-style: dashed;
    background:
        linear-gradient(180deg, rgba(255, 250, 242, 0.95), rgba(245, 237, 227, 0.88));
}

.uploader.is-loading {
    opacity: 0.6;
    cursor: not-allowed;
}

.uploader.is-loading .uploader-label,
.uploader.is-loading .uploader-copy {
    pointer-events: none;
}

.uploader.is-dragover {
    border-color: rgba(184, 92, 56, 0.45);
    background: linear-gradient(180deg, rgba(255, 248, 240, 0.98), rgba(248, 235, 219, 0.94));
}

.uploader-label {
    font-weight: 700;
}

.uploader-copy {
    margin: 0;
    color: var(--ink-soft);
}

#fileInput {
    width: 100%;
}

.control-group,
.control-grid {
    margin-top: 18px;
}

.control-group label,
.control-grid label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.control-group input,
.control-group select,
.control-grid select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #fff;
    color: var(--ink);
}

.control-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.range-scale {
    display: flex;
    justify-content: space-between;
    margin-top: 6px;
    font-size: 0.86rem;
    color: var(--ink-soft);
}

.action-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 22px;
}

.primary-button,
.secondary-button,
.ghost-button,
.download-link {
    border: none;
    border-radius: 999px;
    padding: 12px 18px;
    text-decoration: none;
    transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.primary-button,
.secondary-button,
.ghost-button {
    cursor: pointer;
}

.primary-button {
    background: var(--ink);
    color: #fff;
    box-shadow: 0 14px 24px rgba(22, 33, 47, 0.16);
}

.accent-button {
    background: var(--accent);
}

.secondary-button {
    background: transparent;
    border: 1px solid rgba(22, 33, 47, 0.16);
    color: var(--ink);
}

.ghost-button {
    background: rgba(22, 33, 47, 0.06);
    color: var(--ink);
}

.download-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--accent);
    color: #fff;
    box-shadow: 0 14px 24px rgba(184, 92, 56, 0.18);
}

.primary-button:hover,
.secondary-button:hover,
.ghost-button:hover,
.download-link:hover {
    transform: translateY(-1px);
}

.primary-button:disabled,
.secondary-button:disabled,
.ghost-button:disabled {
    cursor: not-allowed;
    transform: none;
    opacity: 0.55;
    box-shadow: none;
}

.canvas-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-top: 18px;
}

.canvas-card {
    overflow: hidden;
}

.canvas-card figcaption {
    padding: 14px 16px 0;
    font-weight: 700;
}

.canvas-card canvas,
.video-result video {
    aspect-ratio: 4 / 3;
    margin-top: 12px;
    background:
        linear-gradient(45deg, rgba(22, 33, 47, 0.04) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(22, 33, 47, 0.04) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(22, 33, 47, 0.04) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(22, 33, 47, 0.04) 75%);
    background-position: 0 0, 0 12px, 12px -12px, -12px 0;
    background-size: 24px 24px;
    border-top: 1px solid var(--line);
}

.emphasis-card {
    box-shadow: inset 0 0 0 1px rgba(184, 92, 56, 0.18);
    transition: box-shadow 0.3s ease;
}

.emphasis-card.has-result {
    box-shadow: 0 0 0 2px rgba(184, 92, 56, 0.55), 0 16px 40px rgba(184, 92, 56, 0.18);
    animation: pulse-glow 2.4s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 0 2px rgba(184, 92, 56, 0.55), 0 16px 40px rgba(184, 92, 56, 0.18); }
    50%       { box-shadow: 0 0 0 3px rgba(184, 92, 56, 0.35), 0 24px 56px rgba(184, 92, 56, 0.28); }
}

@media (max-width: 960px) {
    .studio-shell {
        grid-template-columns: 1fr;
    }

    .canvas-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .page-shell {
        width: min(100% - 20px, 100%);
        padding: 24px 0 36px;
    }

    .hero h1 {
        max-width: none;
        font-size: 2.5rem;
    }

    .controls-panel,
    .preview-panel {
        padding: 18px;
    }

    .action-row {
        flex-direction: column;
    }

    .primary-button,
    .secondary-button,
    .ghost-button,
    .download-link {
        width: 100%;
    }

    .control-grid {
        grid-template-columns: 1fr;
    }
}

.custom-controls-label {
    margin: 0 0 12px;
    font-weight: 600;
}

.custom-color-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 14px;
}

.custom-color-item label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
}

.custom-color-item input[type="color"] {
    width: 100%;
    height: 44px;
    padding: 4px 6px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: #fff;
    cursor: pointer;
}

.custom-slider-row {
    margin-bottom: 12px;
}

.custom-slider-row label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 6px;
    font-weight: 600;
}

.custom-slider-row input[type="range"] {
    width: 100%;
    padding: 0;
    border: none;
    background: transparent;
}

/* Institutional Footer - Jules Standard */
.hub-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 2rem;
    z-index: 100;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.back-link {
    text-decoration: none;
    color: #3b82f6;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: transform 0.2s;
}

.back-link:hover {
    transform: scale(1.05);
}

.footer-info {
    font-size: 0.75rem;
    color: #64748b;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

@media (prefers-color-scheme: dark) {
    .hub-footer {
        background: rgba(15, 23, 42, 0.7);
        border-top-color: rgba(255, 255, 255, 0.05);
    }
    .back-link { color: #60a5fa; }
    .footer-info { color: #94a3b8; }
}