/* HowMuch.space - Minimal Design inspired by iamrob.in */

@import url('https://fonts.googleapis.com/css2?family=Fira+Mono:wght@400;500;700&display=swap');

:root {
    --bg-primary: #f1f5f9;
    --bg-secondary: #e2e8f0;
    --bg-card: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --border-color: #cbd5e1;
    --radius: 12px;
}

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

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

body {
    font-family: 'Fira Mono', monospace;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 1rem;
}

.logo-icon {
    width: 28px;
    height: 28px;
    background: var(--text-primary);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    color: var(--bg-primary);
}

.nav {
    display: flex;
    gap: 4px;
}

.nav-link {
    padding: 6px 12px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 6px;
    transition: background 0.15s;
}

.nav-link:hover {
    background: var(--bg-secondary);
}

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

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: var(--text-primary);
}

/* Hero */
.hero {
    padding: 64px 0 48px;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 12px;
    line-height: 1.2;
}

.hero p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 480px;
    margin: 0 auto 32px;
}

/* Search */
.search-box {
    position: relative;
    max-width: 100%;
}

.search-box input {
    width: 100%;
    padding: 12px 16px 12px 44px;
    font-size: 0.9rem;
    font-family: 'Fira Mono', monospace;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--text-primary);
    transition: border-color 0.15s, box-shadow 0.15s;
}

.search-box input:focus {
    outline: none;
    border-color: var(--text-primary);
    box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.1);
}

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

.search-box i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.hero .search-box {
    max-width: 440px;
    margin: 0 auto;
}

/* Stats */
.stats-bar {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 2px;
}

/* Sections */
.section {
    padding: 48px 0;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.section-title {
    font-size: 1.125rem;
    font-weight: 600;
}

.section-link {
    font-size: 0.875rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 4px;
}

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

/* Category Grid */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 12px;
}

.category-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.category-card:hover {
    border-color: var(--text-muted);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.category-icon {
    width: 36px;
    height: 36px;
    background: var(--bg-primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.category-card h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.category-card p {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 12px;
    line-height: 1.5;
}

.category-count {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Question Grid */
.question-grid {
    display: grid;
    gap: 8px;
}

.question-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 14px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: border-color 0.15s;
}

.question-card:hover {
    border-color: var(--text-muted);
}

.question-icon {
    width: 32px;
    height: 32px;
    background: var(--bg-primary);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.question-content {
    flex: 1;
    min-width: 0;
}

.question-card h3 {
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.question-meta {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.question-volume {
    display: flex;
    align-items: center;
    gap: 4px;
}

.question-arrow {
    color: var(--border-color);
    font-size: 0.85rem;
    transition: color 0.15s;
}

.question-card:hover .question-arrow {
    color: var(--text-secondary);
}

/* Breadcrumbs */
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px 0;
    font-size: 0.8rem;
    color: var(--text-muted);
}

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

.breadcrumbs i {
    font-size: 0.6rem;
}

/* Page Header */
.page-header {
    padding: 24px 0;
    margin-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.page-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 4px;
}

.page-header p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Question Page */
.question-page {
    max-width: 680px;
    margin: 0 auto;
    padding: 0 24px 64px;
}

.question-header {
    margin-bottom: 24px;
}

.question-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.3;
    margin-bottom: 12px;
}

.question-tags {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.question-tag {
    padding: 4px 10px;
    font-size: 0.7rem;
    font-weight: 500;
    border-radius: 4px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

.question-tag.category {
    background: var(--text-primary);
    color: var(--bg-primary);
}

/* Answer */
.question-answer {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 32px;
}

.question-answer h2 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.question-answer h2 i {
    color: var(--text-muted);
}

.question-answer-content {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.no-answer {
    text-align: center;
    padding: 32px;
    color: var(--text-muted);
}

.no-answer i {
    font-size: 2rem;
    margin-bottom: 12px;
    display: block;
}

/* Related */
.related-questions h2 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
}

/* Subcategory Pills */
.subcategory-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 24px;
}

.subcategory-pill {
    padding: 6px 12px;
    font-size: 0.8rem;
    font-weight: 500;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    color: var(--text-secondary);
    transition: all 0.15s;
}

.subcategory-pill:hover,
.subcategory-pill.active {
    background: var(--text-primary);
    border-color: var(--text-primary);
    color: var(--bg-primary);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 4px;
    margin-top: 32px;
}

.pagination a,
.pagination span {
    padding: 8px 12px;
    font-size: 0.85rem;
    font-weight: 500;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
}

.pagination a:hover {
    border-color: var(--text-muted);
}

.pagination .active {
    background: var(--text-primary);
    border-color: var(--text-primary);
    color: var(--bg-primary);
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 48px 0 24px;
    margin-top: 64px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 32px;
    margin-bottom: 32px;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 12px;
    line-height: 1.6;
}

.footer-col h4 {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 12px;
}

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

.footer-col li {
    margin-bottom: 8px;
}

.footer-col a {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.footer-col a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
}

/* 404 */
.error-page {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.error-content h1 {
    font-size: 5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.error-content h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.error-content p {
    color: var(--text-muted);
    margin-bottom: 24px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 0.9rem;
    font-weight: 500;
    background: var(--text-primary);
    color: var(--bg-primary);
    border-radius: 8px;
}

.btn:hover {
    opacity: 0.9;
}

/* Admin */
.admin-link {
    position: fixed;
    bottom: 16px;
    right: 16px;
    padding: 6px 12px;
    font-size: 0.75rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
    .header-inner {
        height: auto;
        padding: 12px 0;
        flex-wrap: wrap;
    }

    .menu-toggle {
        display: block;
    }

    .nav {
        display: none;
        width: 100%;
        flex-direction: column;
        padding-top: 12px;
    }

    .nav.active {
        display: flex;
    }

    .nav-link {
        padding: 10px;
        text-align: center;
    }

    .hero {
        padding: 40px 0 32px;
    }

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

    .stats-bar {
        gap: 24px;
    }

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

    .question-card h3 {
        white-space: normal;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

::selection {
    background: var(--text-primary);
    color: var(--bg-primary);
}