* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    color-scheme: light;
    --page-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --page-text: #333;
    --header-text: #ffffff;
    --header-muted: rgba(255, 255, 255, 0.9);
    --surface-bg: #ffffff;
    --panel-bg: #f8f9fa;
    --card-bg: #ffffff;
    --border-color: #ddd;
    --muted-text: #666;
    --shadow-soft: rgba(0, 0, 0, 0.2);
    --shadow-strong: rgba(0, 0, 0, 0.3);
    --button-primary: #667eea;
    --button-primary-hover: #5568d3;
    --button-secondary: #6c757d;
    --button-secondary-hover: #5a6268;
    --button-add: #28a745;
    --button-add-hover: #218838;
    --danger: #dc3545;
    --input-bg: #ffffff;
    --input-text: #333;
    --modal-overlay: rgba(10, 10, 20, 0.55);
}

@media (prefers-color-scheme: dark) {
    :root {
        color-scheme: dark;
        --page-bg: linear-gradient(135deg, #0f172a 0%, #1f2937 100%);
        --page-text: #e5e7eb;
        --header-text: #f8fafc;
        --header-muted: rgba(248, 250, 252, 0.75);
        --surface-bg: #111827;
        --panel-bg: #0f172a;
        --card-bg: #111827;
        --border-color: #2d3748;
        --muted-text: #9ca3af;
        --shadow-soft: rgba(0, 0, 0, 0.45);
        --shadow-strong: rgba(0, 0, 0, 0.6);
        --button-primary: #4f46e5;
        --button-primary-hover: #4338ca;
        --button-secondary: #374151;
        --button-secondary-hover: #1f2937;
        --button-add: #22c55e;
        --button-add-hover: #16a34a;
        --danger: #ef4444;
        --input-bg: #111827;
        --input-text: #e5e7eb;
        --modal-overlay: rgba(2, 6, 23, 0.75);
    }
}

:root[data-theme="light"] {
    color-scheme: light;
    --page-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --page-text: #333;
    --header-text: #ffffff;
    --header-muted: rgba(255, 255, 255, 0.9);
    --surface-bg: #ffffff;
    --panel-bg: #f8f9fa;
    --card-bg: #ffffff;
    --border-color: #ddd;
    --muted-text: #666;
    --shadow-soft: rgba(0, 0, 0, 0.2);
    --shadow-strong: rgba(0, 0, 0, 0.3);
    --button-primary: #667eea;
    --button-primary-hover: #5568d3;
    --button-secondary: #6c757d;
    --button-secondary-hover: #5a6268;
    --button-add: #28a745;
    --button-add-hover: #218838;
    --danger: #dc3545;
    --input-bg: #ffffff;
    --input-text: #333;
    --modal-overlay: rgba(10, 10, 20, 0.55);
}

:root[data-theme="dark"] {
    color-scheme: dark;
    --page-bg: linear-gradient(135deg, #0f172a 0%, #1f2937 100%);
    --page-text: #e5e7eb;
    --header-text: #f8fafc;
    --header-muted: rgba(248, 250, 252, 0.75);
    --surface-bg: #111827;
    --panel-bg: #0f172a;
    --card-bg: #111827;
    --border-color: #2d3748;
    --muted-text: #9ca3af;
    --shadow-soft: rgba(0, 0, 0, 0.45);
    --shadow-strong: rgba(0, 0, 0, 0.6);
    --button-primary: #4f46e5;
    --button-primary-hover: #4338ca;
    --button-secondary: #374151;
    --button-secondary-hover: #1f2937;
    --button-add: #22c55e;
    --button-add-hover: #16a34a;
    --danger: #ef4444;
    --input-bg: #111827;
    --input-text: #e5e7eb;
    --modal-overlay: rgba(2, 6, 23, 0.75);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--page-bg);
    min-height: 100vh;
    color: var(--page-text);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    color: var(--header-text);
    margin-bottom: 3rem;
}

header .header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

header .header-top .header-text {
    flex: 1;
}

header h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

header p {
    font-size: 1.2rem;
    color: var(--header-muted);
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.art-card {
    display: block;
    background: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px var(--shadow-soft);
    cursor: pointer;
    color: inherit;
    text-decoration: none;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.art-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px var(--shadow-strong);
}

.art-card:focus-visible {
    outline: 3px solid #ffd166;
    outline-offset: 4px;
}

.card-preview {
    width: 100%;
    height: 250px;
    background: var(--panel-bg);
}

.chaotic-preview {
    background: linear-gradient(45deg, #EF476F 0%, #FFD166 25%, #06D6A0 50%, #118AB2 75%, #073B4C 100%);
}

.diagonal-preview {
    background: repeating-linear-gradient(
        45deg,
        #000,
        #000 10px,
        #fff 10px,
        #fff 20px
    );
}

.joy-preview {
    background: linear-gradient(180deg, #000 0%, #1a1a1a 100%);
    position: relative;
    overflow: hidden;
}

.bubbles-preview {
    background: radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0) 45%),
        radial-gradient(circle at 70% 40%, rgba(255, 255, 255, 0.6), rgba(255, 255, 255, 0) 50%),
        radial-gradient(circle at 50% 70%, rgba(255, 255, 255, 0.5), rgba(255, 255, 255, 0) 55%),
        linear-gradient(135deg, #1b2735 0%, #090a0f 100%);
}

.matrix-preview {
    background: linear-gradient(180deg, #020a05 0%, #04160c 100%);
    position: relative;
    overflow: hidden;
}

.matrix-preview::after {
    content: "101010";
    position: absolute;
    inset: 20% 10% auto;
    color: rgba(109, 255, 122, 0.6);
    font-family: "Courier New", monospace;
    font-size: 2rem;
    letter-spacing: 0.2rem;
}

.art-card h2 {
    padding: 1.5rem 1.5rem 0.5rem;
    font-size: 1.8rem;
    color: var(--page-text);
}

.art-card p {
    padding: 0 1.5rem 1.5rem;
    color: var(--muted-text);
    line-height: 1.6;
}

footer {
    text-align: center;
    color: var(--header-text);
    opacity: 0.8;
    padding: 2rem 0;
}

.page-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.page-actions .back-button {
    margin-bottom: 0;
}


/* Generator Page Styles */
.generator-container {
    background: var(--surface-bg);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 10px 30px var(--shadow-soft);
}

.back-button {
    display: inline-block;
    margin-bottom: 1.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--button-primary);
    color: #ffffff;
    text-decoration: none;
    border-radius: 6px;
    transition: background 0.3s ease;
}

.back-button:hover {
    background: var(--button-primary-hover);
}

.generator-header {
    margin-bottom: 2rem;
}

.generator-header h1 {
    color: var(--page-text);
    margin-bottom: 0.5rem;
}

.generator-header p {
    color: var(--muted-text);
}

.controls-panel {
    background: var(--panel-bg);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.control-group {
    margin-bottom: 1.5rem;
}

.control-group:last-child {
    margin-bottom: 0;
}

.control-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--page-text);
}

.control-group input[type="number"],
.control-group input[type="text"],
.control-group select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    background: var(--input-bg);
    color: var(--input-text);
    transition: border-color 0.3s ease;
}

.control-group input:focus,
.control-group select:focus {
    outline: none;
    border-color: var(--button-primary);
}

.control-group small {
    display: block;
    margin-top: 0.25rem;
    color: var(--muted-text);
    font-size: 0.875rem;
}

.color-inputs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.color-input-group {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.color-input-group input[type="color"] {
    width: 50px;
    height: 40px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
}

.color-input-group button {
    padding: 0.5rem;
    background: var(--danger);
    color: #ffffff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
}

.color-action-buttons {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    align-items: center;
}

.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--modal-overlay);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    z-index: 1000;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--surface-bg);
    border-radius: 12px;
    padding: 1.5rem;
    width: min(520px, 100%);
    box-shadow: 0 20px 40px var(--shadow-strong);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
}

.modal-header h2 {
    font-size: 1.25rem;
    color: var(--page-text);
}

.modal-close {
    background: transparent;
    color: var(--page-text);
    padding: 0.35rem 0.6rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.875rem;
}

.modal-close:hover {
    background: var(--panel-bg);
}

.modal-body label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--page-text);
}

.modal-body input[type="text"] {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    background: var(--input-bg);
    color: var(--input-text);
    transition: border-color 0.3s ease;
}

.modal-body input[type="text"]:focus {
    outline: none;
    border-color: var(--button-primary);
}

.modal-body small {
    display: block;
    margin-top: 0.35rem;
    color: var(--muted-text);
    font-size: 0.875rem;
}

.modal-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.zone-inputs {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 0.5rem;
}

.zone-card {
    background: var(--surface-bg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
}

.zone-header {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.zone-header .zone-name {
    flex: 1;
    padding: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    background: var(--input-bg);
    color: var(--input-text);
}

.zone-header .zone-percentage {
    width: 70px;
    padding: 0.5rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-weight: 600;
    background: var(--input-bg);
    color: var(--input-text);
}

.zone-header .percentage-label {
    font-weight: 600;
    color: var(--muted-text);
}

.zone-header .zone-remove {
    padding: 0.5rem 1rem;
    background: var(--danger);
    color: #ffffff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    white-space: nowrap;
}

.zone-settings {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 0.75rem;
}

.zone-setting-row {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.zone-setting-row label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--muted-text);
}

.zone-setting-row input[type="color"] {
    width: 100%;
    height: 40px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
}

.zone-setting-row input[type="number"],
.zone-setting-row select {
    width: 100%;
    padding: 0.5rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.875rem;
    background: var(--input-bg);
    color: var(--input-text);
}

.zone-setting-row input[type="number"]:focus,
.zone-setting-row select:focus {
    outline: none;
    border-color: var(--button-primary);
}

.button-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

button {
    padding: 0.75rem 1.5rem;
    background: var(--button-primary);
    color: #ffffff;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.3s ease;
}

button:hover {
    background: var(--button-primary-hover);
}

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

button.secondary:hover {
    background: var(--button-secondary-hover);
}

button.add-color {
    background: var(--button-add);
}

button.add-color:hover {
    background: var(--button-add-hover);
}

.theme-toggle {
    background: transparent;
    color: var(--page-text);
    border: 2px solid var(--border-color);
    border-radius: 999px;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.3s ease, border-color 0.3s ease;
}

.theme-toggle:hover {
    background: var(--panel-bg);
}

.canvas-container {
    margin-top: 2rem;
    text-align: center;
    background: var(--panel-bg);
    padding: 2rem;
    border-radius: 8px;
}

canvas {
    max-width: 100%;
    height: auto;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    border-radius: 4px;
}

.grid-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.share-feedback {
    display: inline-block;
    padding: 0.5rem 1rem;
    color: var(--button-add);
    font-weight: 600;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.share-feedback.visible {
    opacity: 1;
}

@media (max-width: 768px) {
    .grid-layout {
        grid-template-columns: 1fr;
    }

    header h1 {
        font-size: 2rem;
    }

    header .header-top {
        flex-direction: column;
        text-align: center;
    }

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