/* CompoundStacks.com - Dark Theme App-Style CSS */

:root {
    --bg-dark: #0f1419;
    --bg-card: #1a1f2e;
    --bg-card-hover: #232938;
    --bg-input: #0d1117;
    --border-color: #2d3548;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --accent-blue: #58a6ff;
    --accent-purple: #a371f7;
    --accent-green: #3fb950;
    --accent-orange: #d29922;
    --accent-red: #f85149;
    --accent-cyan: #39c5cf;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-heal: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    --gradient-gh: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    --gradient-weight: linear-gradient(135deg, #ff416c 0%, #ff4b2b 100%);
    --radius: 8px;
    --radius-lg: 12px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-dark);
    min-height: 100vh;
}

a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--accent-purple);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.site-header {
    background: rgba(15, 20, 25, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.875rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo:hover {
    color: var(--text-primary);
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: var(--gradient-1);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.main-nav {
    display: flex;
    gap: 0.25rem;
}

.main-nav a {
    padding: 0.5rem 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius);
    transition: all 0.2s;
}

.main-nav a:hover {
    color: var(--text-primary);
    background: var(--bg-card);
}

.main-nav a.active {
    color: var(--text-primary);
    background: var(--bg-card);
}

.header-search {
    display: flex;
    gap: 0.5rem;
}

.header-search input {
    padding: 0.5rem 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.875rem;
    width: 220px;
}

.header-search input::placeholder {
    color: var(--text-muted);
}

.header-search input:focus {
    outline: none;
    border-color: var(--accent-blue);
}

/* Hero Section */
.hero {
    padding: 4rem 0;
    text-align: center;
    background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-dark) 100%);
    border-bottom: 1px solid var(--border-color);
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
}

.btn-primary:hover {
    opacity: 0.9;
    color: white;
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.2s;
}

.card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}

.card-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.card-header h3 {
    font-size: 1rem;
    margin: 0;
}

.card-body {
    padding: 1.25rem;
}

.card-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

/* Stack Cards */
.stack-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.stack-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.2s;
}

.stack-card:hover {
    border-color: var(--accent-purple);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.stack-card-header {
    padding: 1.25rem;
    position: relative;
}

.stack-card-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.stack-card.healing .stack-card-header::before { background: var(--gradient-heal); }
.stack-card.growth .stack-card-header::before { background: var(--gradient-gh); }
.stack-card.weight .stack-card-header::before { background: var(--gradient-weight); }
.stack-card.general .stack-card-header::before { background: var(--gradient-1); }

.stack-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.stack-card h3 a {
    color: var(--text-primary);
}

.stack-card h3 a:hover {
    color: var(--accent-blue);
}

.stack-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.stack-card-body {
    padding: 0 1.25rem 1.25rem;
}

.stack-compounds {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.compound-tag {
    padding: 0.25rem 0.6rem;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.stack-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Tool Cards */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
    margin: 2rem 0;
}

.tool-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: all 0.2s;
}

.tool-card:hover {
    border-color: var(--accent-cyan);
    background: var(--bg-card-hover);
}

.tool-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.tool-card h3 {
    font-size: 1.1rem;
    margin: 0;
}

.tool-card h3 a {
    color: var(--text-primary);
}

.tool-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin: 0;
}

/* Section Headers */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.section-header h2 {
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.section-header a {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Main Content */
.main-content {
    padding: 2.5rem 0;
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 2rem;
}

/* Sidebar */
.sidebar .card {
    margin-bottom: 1.5rem;
}

.sidebar-list {
    list-style: none;
}

.sidebar-list li {
    border-bottom: 1px solid var(--border-color);
}

.sidebar-list li:last-child {
    border-bottom: none;
}

.sidebar-list a {
    display: block;
    padding: 0.75rem 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: color 0.2s;
}

.sidebar-list a:hover {
    color: var(--accent-blue);
}

/* Tags/Badges */
.badge {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-healing { background: rgba(59, 185, 80, 0.2); color: var(--accent-green); }
.badge-growth { background: rgba(163, 113, 247, 0.2); color: var(--accent-purple); }
.badge-weight { background: rgba(248, 81, 73, 0.2); color: var(--accent-red); }
.badge-beginner { background: rgba(88, 166, 255, 0.2); color: var(--accent-blue); }
.badge-advanced { background: rgba(210, 153, 34, 0.2); color: var(--accent-orange); }

/* Forms & Inputs */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.form-input, .form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: border-color 0.2s;
}

.form-input:focus, .form-select:focus {
    outline: none;
    border-color: var(--accent-blue);
}

.form-select {
    cursor: pointer;
}

/* Result Box */
.result-box {
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin: 1.5rem 0;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.result-item:last-child {
    border-bottom: none;
}

.result-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.result-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--accent-cyan);
}

/* Articles */
.article-content {
    font-size: 1rem;
    line-height: 1.8;
}

.article-content h2 {
    font-size: 1.5rem;
    margin: 2.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.article-content h3 {
    font-size: 1.2rem;
    margin: 2rem 0 0.75rem;
}

.article-content p {
    margin-bottom: 1.25rem;
    color: var(--text-secondary);
}

.article-content ul, .article-content ol {
    margin: 1rem 0 1.5rem 1.5rem;
    color: var(--text-secondary);
}

.article-content li {
    margin-bottom: 0.5rem;
}

.article-content strong {
    color: var(--text-primary);
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.9rem;
}

.data-table th, .data-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background: var(--bg-input);
    font-weight: 600;
    color: var(--text-primary);
}

.data-table tr:hover {
    background: var(--bg-card-hover);
}

/* Alert/Notice */
.notice {
    padding: 1rem 1.25rem;
    border-radius: var(--radius);
    margin: 1.5rem 0;
    border-left: 4px solid;
}

.notice-warning {
    background: rgba(210, 153, 34, 0.1);
    border-color: var(--accent-orange);
    color: var(--accent-orange);
}

.notice-info {
    background: rgba(88, 166, 255, 0.1);
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.notice-danger {
    background: rgba(248, 81, 73, 0.1);
    border-color: var(--accent-red);
    color: var(--accent-red);
}

/* Footer */
.site-footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1.5rem;
    margin-top: 4rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    font-size: 0.9rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-section a:hover {
    color: var(--accent-blue);
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Breadcrumb */
.breadcrumb {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.breadcrumb a {
    color: var(--text-muted);
}

.breadcrumb a:hover {
    color: var(--accent-blue);
}

.breadcrumb span {
    margin: 0 0.5rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .content-grid {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    .header-inner {
        flex-wrap: wrap;
        gap: 1rem;
    }

    .main-nav {
        order: 3;
        width: 100%;
        overflow-x: auto;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .stack-grid, .tool-grid {
        grid-template-columns: 1fr;
    }

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