/* 1934 Sanzo Wada Style with Vintage Typography */
:root {
    --paper: #f8f4e9;
    --ink: #2b2d42;
    --accent: #d62828;
    --gold: #e9c46a;
    --teal: #2a9d8f;
    --border: #d6d0c4;
    --shadow: rgba(0, 0, 0, 0.2);
    --background-pattern:
        linear-gradient(90deg, rgba(214, 40, 40, 0.03) 1px, transparent 1px),
        linear-gradient(rgba(214, 40, 40, 0.03) 1px, transparent 1px);

    --font-serif-jp: 'Noto Serif JP', serif;
    --font-serif-en: 'Playfair Display', serif;
    --font-serif-alt: 'EB Garamond', serif;
    --font-sans: 'Crimson Text', serif;

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
}

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

body {
    font-family: var(--font-sans);
    background: var(--paper);
    color: var(--ink);
    line-height: 1.6;
    padding: var(--spacing-md);
    background-image: var(--background-pattern);
    background-size: 20px 20px;
    transition: background 0.3s ease, color 0.3s ease;
}

.dictionary-container {
    max-width: 1000px;
    margin: 0 auto;
    border: 2px solid var(--border);
    padding: var(--spacing-lg);
    background: var(--paper);
    box-shadow: 4px 4px 0 var(--shadow);
    transition: all 0.3s ease;
}

/* Header */
.dictionary-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    padding-bottom: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.title-japanese {
    font-family: var(--font-serif-jp);
    font-size: 2.5rem;
    font-weight: 500;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-xs);
    color: var(--accent);
}

.title-english {
    font-family: var(--font-serif-en);
    font-size: 1.4rem;
    font-weight: 500;
    font-style: italic;
    margin-bottom: var(--spacing-xs);
    color: #444;
}

.subtitle {
    font-family: var(--font-serif-alt);
    font-size: 0.9rem;
    color: #666;
}

/* Tools Section */
.tools-section {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    border: 1px solid var(--border);
    background: rgba(248, 244, 233, 0.8);
    transition: background 0.3s ease;
}

.tool-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.tool-label {
    font-family: var(--font-serif-alt);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* Vintage Select */
.vintage-select {
    padding: 0.4rem 0.8rem;
    border: 1px solid var(--border);
    background: var(--paper);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    color: var(--ink);
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232b2d42' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.5rem center;
    background-size: 1rem;
    transition: all 0.3s ease;
}

.vintage-select:focus {
    outline: 1px dotted var(--accent);
}

/* Slider */
.slider-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.size-display {
    font-family: var(--font-serif-alt);
    font-weight: 600;
    width: 20px;
    text-align: center;
}

.vintage-slider {
    width: 120px;
    height: 20px;
    -webkit-appearance: none;
    background: #e0d8c0;
    border: 1px solid var(--border);
    outline: none;
    transition: all 0.3s ease;
}

.vintage-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--accent);
    border: 1px solid #5d2a14;
    cursor: pointer;
    transition: all 0.3s ease;
}

/* Buttons */
.vintage-button {
    padding: 0.5rem 1.2rem;
    border: 1px solid var(--border);
    background: var(--paper);
    font-family: var(--font-serif-en);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--ink);
    cursor: pointer;
    box-shadow: 2px 2px 0 var(--shadow);
    transition: all 0.3s ease;
}

.vintage-button:hover {
    background: #f0e8d0;
    transform: translate(1px, 1px);
    box-shadow: 1px 1px 0 var(--shadow);
}

.action-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.action-button {
    padding: 0.4rem 0.8rem;
    border: 1px solid var(--border);
    background: var(--paper);
    font-family: var(--font-serif-en);
    font-size: 0.85rem;
    color: var(--ink);
    cursor: pointer;
    transition: all 0.3s ease;
}

.action-button:hover {
    background: #f0e8d0;
}

/* Color Gallery */
.color-gallery {
    margin-top: var(--spacing-lg);
}

.gallery-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--spacing-md);
}

/* Color Sample */
.color-sample {
    border: 1px solid var(--border);
    background: var(--paper);
    box-shadow: 2px 2px 0 var(--shadow);
    transition: all 0.3s ease;
}

.color-sample:hover {
    transform: translateY(-3px);
    box-shadow: 3px 3px 0 var(--shadow);
}

.color-swatch {
    height: 140px;
    position: relative;
    border-bottom: 1px solid var(--border);
    transition: filter 0.3s ease;
    cursor: pointer;
}

.color-swatch:hover {
    filter: brightness(0.85);
}

.color-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.color-swatch:hover .color-overlay {
    opacity: 1;
}

.color-hex-overlay {
    color: white;
    font-family: 'Courier New', monospace;
    font-size: 1rem;
    font-weight: bold;
    text-align: center;
    padding: var(--spacing-xs);
}

.color-info {
    padding: var(--spacing-sm);
}

.color-name {
    font-family: var(--font-serif-jp);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xs);
}

.color-japanese {
    font-family: var(--font-serif-jp);
    font-size: 0.85rem;
    color: #666;
    margin-bottom: var(--spacing-xs);
}

.color-details {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    margin-bottom: 0;
}

.color-detail {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1px;
    padding: 3px 5px;
    border-radius: 3px;
    transition: background 0.2s ease;
    cursor: pointer;
}

.color-detail:hover {
    background: #f0e8d0;
}

.color-detail.copied {
    background: #e0f0e0;
    color: #2a9d8f;
}

.color-actions {
    display: none;
}

/* Info Overlay */
.info-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.info-overlay.active {
    opacity: 1;
    visibility: visible;
}

.info-content {
    width: 90%;
    max-width: 500px;
    background: var(--paper);
    border: 2px solid var(--border);
    padding: var(--spacing-lg);
    position: relative;
    box-shadow: 4px 4px 0 var(--shadow);
    transition: all 0.3s ease;
}

.info-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border);
}

.info-header h2 {
    font-family: var(--font-serif-en);
    font-size: 1.5rem;
}

.close-button {
    width: 30px;
    height: 30px;
    border: 1px solid var(--border);
    background: var(--paper);
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.close-button:hover {
    background: #f0e8d0;
}

.info-body p {
    font-family: var(--font-sans);
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
    line-height: 1.7;
}

.signature-section {
    text-align: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border);
}

.signature-placeholder {
    width: 120px;
    height: 60px;
    margin: 0 auto var(--spacing-sm);
    background:
        linear-gradient(90deg, transparent 49%, var(--accent) 49%, var(--accent) 51%, transparent 51%),
        linear-gradient(transparent 49%, var(--accent) 49%, var(--accent) 51%, transparent 51%);
    background-size: 20px 20px;
}

.signature-section p {
    font-family: var(--font-serif-alt);
    font-style: italic;
    color: #666;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes copied {
    0% { background: #e0f0e0; }
    100% { background: transparent; }
}

.color-sample {
    animation: fadeIn 0.4s ease forwards;
}

.color-sample:nth-child(1) { animation-delay: 0.1s; }
.color-sample:nth-child(2) { animation-delay: 0.2s; }
.color-sample:nth-child(3) { animation-delay: 0.3s; }
.color-sample:nth-child(4) { animation-delay: 0.4s; }
.color-sample:nth-child(5) { animation-delay: 0.5s; }
.color-sample:nth-child(6) { animation-delay: 0.6s; }
.color-sample:nth-child(7) { animation-delay: 0.7s; }
.color-sample:nth-child(8) { animation-delay: 0.8s; }

/* Responsive */
@media (max-width: 768px) {
    .dictionary-header {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }

    .tools-section {
        flex-direction: column;
    }

    .gallery-container {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

    .color-swatch {
        height: 120px;
    }

    .action-buttons {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    body {
        padding: var(--spacing-sm);
    }

    .dictionary-container {
        padding: var(--spacing-md);
    }

    .title-japanese {
        font-size: 2rem;
    }

    .title-english {
        font-size: 1.2rem;
    }

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

    .gallery-container {
        grid-template-columns: repeat(2, 1fr);
    }

    .vintage-select {
        width: 100%;
    }
}

@media (max-width: 360px) {
    .gallery-container {
        grid-template-columns: 1fr;
    }
}