/* === CSS Variables - 匹配 ffxiv-collection-tc 風格 === */
:root {
    /* 背景色 */
    --bg-primary: #333;
    --bg-secondary: #222;
    --bg-tertiary: #191919;
    --bg-card: #282828;
    --bg-card-hover: #363636;

    /* 文字色 */
    --text-primary: #eee;
    --text-secondary: #ccc;
    --text-muted: #888;

    /* 強調色 */
    --accent-color: #5C6E8E;
    --accent-hover: #6d7f9f;
    --accent-gold: #917D54;
    --success-color: #5a9c69;
    --error-color: #dc3545;

    /* 邊框與陰影 */
    --border-color: #191919;
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
}

/* === Reset & Base === */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

/* === Container === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* === Header === */
.header {
    text-align: center;
    margin-bottom: 2.5rem;
    padding: 1.5rem 0;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.site-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.site-description {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.header-buttons {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.header-buttons .btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-icon {
    width: 18px;
    height: 18px;
}

.btn-discord {
    background: #5865F2;
    color: #fff;
}

.btn-discord:hover {
    background: #4752c4;
    transform: translateY(-2px);
}

.btn-support {
    background: var(--accent-gold);
    color: var(--text-primary);
}

.btn-support:hover {
    background: #a68d5f;
    transform: translateY(-2px);
}

/* === Tools Grid === */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    align-items: start;
}

/* === Tool Card === */
.tool-card {
    background: var(--bg-card);
    border-radius: 8px;
    padding: 1.25rem;
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
}

.tool-card:not(.coming-soon):hover {
    background: var(--bg-card-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.tool-card.coming-soon {
    opacity: 0.5;
    cursor: default;
}

/* === Tool Card Content === */
.tool-icon {
    width: 40px;
    height: 40px;
    min-width: 40px;
    min-height: 40px;
    margin-bottom: 0.75rem;
    image-rendering: pixelated;
    object-fit: contain;
    flex-shrink: 0;
}

.tool-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.tool-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    flex: 1;
    margin-bottom: 1rem;
}

.tool-status {
    display: inline-block;
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--bg-tertiary);
    color: var(--text-muted);
    align-self: flex-start;
}

.tool-status.available {
    background: rgba(90, 156, 105, 0.2);
    color: var(--success-color);
}

/* === Buttons (通用按鈕樣式) === */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

.btn-primary {
    background: var(--accent-color);
    color: var(--text-primary);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

.btn-gold {
    background: var(--accent-gold);
    color: var(--text-primary);
}

/* === Footer === */
.footer {
    text-align: center;
    padding: 1.5rem 0;
    margin-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.8rem;
}

.footer p {
    margin-bottom: 0.4rem;
}

.footer .github-link a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer .github-link a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* === Responsive === */
@media (max-width: 768px) {
    .site-title {
        font-size: 1.6rem;
    }

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

    .container {
        padding: 1rem;
    }

    .header {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .site-title {
        font-size: 1.4rem;
    }

    .site-description {
        font-size: 0.9rem;
    }

    .tool-card {
        padding: 1rem;
    }
}