:root {
    --sr-primary: #1D4ED8;
    --sr-primary-light: #3B82F6;
    --sr-accent: #10B981;
    --sr-accent-light: #D1FAE5;
    --sr-accent-dark: #059669;
    --sr-bg: #FAFAFA;
    --sr-bg-surface: #FFFFFF;
    --sr-bg-tinted: #F0FDF4;
    --sr-text: #1E293B;
    --sr-text-secondary: #64748B;
    --sr-border: #E5E7EB;
    --sr-danger: #EF4444;
    --sr-dark-bg: #0F172A;
    --sr-hero-bg: #0F172A;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--sr-text);
    background: var(--sr-bg);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--sr-primary); text-decoration: none; }
a:hover { color: var(--sr-accent-dark); }

.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }

/* Nav */
.site-nav {
    background: var(--sr-dark-bg);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}
.nav-container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}
.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    font-weight: 700;
    font-size: 1.2rem;
    text-decoration: none;
}
.nav-brand:hover { color: var(--sr-accent); }
.nav-brand span { font-size: 1.15rem; }
.nav-brand-logo { height: 36px; width: auto; }
.nav-brand-icon {
    width: 32px;
    height: 32px;
    background: var(--sr-accent);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 16px;
    color: var(--sr-primary);
}
.nav-links {
    display: flex;
    list-style: none;
    gap: 8px;
    align-items: center;
}
.nav-item { position: relative; }
.nav-item > a {
    color: rgba(255,255,255,0.85);
    padding: 8px 14px;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.15s;
    text-decoration: none;
    display: block;
}
.nav-item > a:hover, .nav-item > a.active {
    color: #fff;
    background: rgba(255,255,255,0.1);
}
.nav-item--dropdown { position: relative; display: flex; align-items: center; }
.nav-dropdown-toggle {
    background: none;
    border: none;
    color: rgba(255,255,255,0.6);
    cursor: pointer;
    padding: 4px;
    margin-left: -8px;
}
.nav-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
    min-width: 200px;
    padding: 8px 0;
    list-style: none;
    z-index: 200;
}
.nav-item--dropdown.open .nav-dropdown { display: block; }
.nav-dropdown li a {
    display: block;
    padding: 8px 16px;
    color: var(--sr-text);
    font-size: 0.9rem;
    transition: background 0.15s;
}
.nav-dropdown li a:hover { background: var(--sr-bg-tinted); }
.nav-cta {
    background: var(--sr-accent);
    color: #fff !important;
    padding: 8px 20px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.15s;
    text-decoration: none;
}
.nav-cta:hover { background: var(--sr-accent-dark); color: #fff !important; }
.nav-mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    cursor: pointer;
}

/* Hero */
.hero {
    background: var(--sr-dark-bg);
    color: #fff;
    padding: 80px 0 64px;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(29,78,216,0.15) 0%, transparent 70%);
    pointer-events: none;
}
.hero .container { position: relative; z-index: 1; }
.hero h1 { font-size: 2.8rem; font-weight: 800; margin-bottom: 16px; letter-spacing: -0.5px; line-height: 1.15; }
.hero p { font-size: 1.15rem; color: rgba(255,255,255,0.6); max-width: 600px; margin: 0 auto 40px; }
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid rgba(255,255,255,0.08);
}
.hero-stat { text-align: center; }
.hero-stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--sr-accent);
    display: block;
}
.hero-stat-label { font-size: 0.8rem; color: rgba(255,255,255,0.45); text-transform: uppercase; letter-spacing: 1.5px; font-weight: 500; }

/* Section */
.section { padding: 64px 0; }
.section--alt { background: var(--sr-bg-surface); }
.section h2 { font-size: 1.8rem; font-weight: 700; margin-bottom: 24px; color: var(--sr-text); }
.section-subtitle { color: var(--sr-text-secondary); font-size: 1.05rem; margin-bottom: 32px; }

/* Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}
.card {
    background: var(--sr-bg-surface);
    border: 1px solid var(--sr-border);
    border-radius: 10px;
    padding: 24px;
    transition: box-shadow 0.2s, transform 0.2s;
}
.card:hover {
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transform: translateY(-2px);
}
.card-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--sr-primary);
}
.card-title a { color: inherit; }
.card-title a:hover { color: var(--sr-accent-dark); }
.card-company { font-weight: 500; color: var(--sr-text-secondary); margin-bottom: 4px; }
.card-meta { font-size: 0.85rem; color: var(--sr-text-secondary); display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 12px; }
.card-salary { font-weight: 600; color: var(--sr-accent-dark); }
.card-salary-green { font-weight: 700; color: var(--sr-accent); }
.card-badge {
    display: inline-block;
    background: var(--sr-bg-tinted);
    color: var(--sr-accent-dark);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.card-badge--remote { background: var(--sr-accent-light); color: var(--sr-accent-dark); }

/* Job Board */
.job-filters {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}
.filter-btn {
    padding: 8px 16px;
    border: 1px solid var(--sr-border);
    border-radius: 6px;
    background: #fff;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.15s;
}
.filter-btn:hover, .filter-btn.active {
    background: var(--sr-primary);
    color: #fff;
    border-color: var(--sr-primary);
}

/* Salary table */
.salary-table { width: 100%; border-collapse: collapse; margin: 24px 0; }
.salary-table th {
    background: var(--sr-primary);
    color: #fff;
    padding: 12px 16px;
    text-align: left;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.salary-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--sr-border);
    font-size: 0.95rem;
}
.salary-table tr:hover td { background: var(--sr-bg-tinted); }
.salary-table .salary-num { font-weight: 600; color: var(--sr-accent); }

/* Article */
.article-content { max-width: 780px; margin: 0 auto; }
.article-content h1 { font-size: 2.2rem; font-weight: 800; margin-bottom: 12px; color: var(--sr-text); line-height: 1.2; }
.article-content h2 { font-size: 1.5rem; font-weight: 700; margin-top: 48px; margin-bottom: 16px; color: var(--sr-text); }
.article-content h3 { font-size: 1.2rem; font-weight: 600; margin-top: 32px; margin-bottom: 12px; }
.article-content p { margin-bottom: 20px; line-height: 1.75; }
.article-content ul, .article-content ol { margin-bottom: 20px; padding-left: 24px; }
.article-content li { margin-bottom: 8px; line-height: 1.65; }
.article-meta { color: var(--sr-text-secondary); font-size: 0.9rem; margin-bottom: 32px; }
.article-date { color: var(--sr-text-secondary); }

/* Breadcrumb */
.breadcrumb {
    padding: 16px 0;
    font-size: 0.85rem;
    color: var(--sr-text-secondary);
}
.breadcrumb-link { color: var(--sr-text-secondary); }
.breadcrumb-link:hover { color: var(--sr-primary); }
.breadcrumb-sep { margin: 0 8px; opacity: 0.4; }
.breadcrumb-current { color: var(--sr-text); font-weight: 500; }

/* FAQ */
.faq-section { margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--sr-border); }
.faq-section h2 { font-size: 1.5rem; margin-bottom: 24px; }
.faq-item { margin-bottom: 24px; }
.faq-question { font-size: 1.05rem; font-weight: 600; margin-bottom: 8px; color: var(--sr-text); }
.faq-answer { color: var(--sr-text-secondary); line-height: 1.7; }

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 40px;
    flex-wrap: wrap;
}
.pagination a, .pagination span {
    padding: 8px 14px;
    border: 1px solid var(--sr-border);
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--sr-text);
}
.pagination a:hover { background: var(--sr-primary); color: #fff; border-color: var(--sr-primary); }
.pagination .current { background: var(--sr-primary); color: #fff; border-color: var(--sr-primary); }

/* Footer */
.site-footer {
    background: var(--sr-dark-bg);
    color: rgba(255,255,255,0.75);
    padding: 64px 0 32px;
}
.footer-container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 40px; margin-bottom: 48px; }
.footer-column h4 { color: #fff; font-size: 0.9rem; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 16px; }
.footer-column ul { list-style: none; }
.footer-column li { margin-bottom: 8px; }
.footer-column a { color: rgba(255,255,255,0.65); font-size: 0.9rem; transition: color 0.15s; }
.footer-column a:hover { color: var(--sr-accent); }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    opacity: 0.6;
    flex-wrap: wrap;
    gap: 12px;
}

/* Data callout */
.data-callout {
    background: var(--sr-bg-tinted);
    border-left: 4px solid var(--sr-accent);
    padding: 20px 24px;
    border-radius: 0 8px 8px 0;
    margin: 24px 0;
}
.data-callout strong { color: var(--sr-accent-dark); }

/* Stat grid on homepage */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 32px 0;
}
.stat-card {
    background: var(--sr-bg-surface);
    border: 1px solid var(--sr-border);
    border-radius: 10px;
    padding: 24px;
    text-align: center;
}
.stat-card-number { font-size: 2rem; font-weight: 800; color: var(--sr-accent); }
.stat-card-label { font-size: 0.85rem; color: var(--sr-text-secondary); margin-top: 4px; }

/* Newsletter */
.nl-section { padding: 64px 0; background: var(--sr-bg-tinted); }
.nl-card { max-width: 560px; margin: 0 auto; text-align: center; }
.nl-title { font-size: 1.6rem; font-weight: 700; margin-bottom: 8px; color: var(--sr-text); }
.nl-desc { color: var(--sr-text-secondary); margin-bottom: 24px; font-size: 1.05rem; }
.nl-form-row { display: flex; gap: 8px; max-width: 440px; margin: 0 auto; }
.nl-input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid var(--sr-border);
    border-radius: 6px;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.15s;
}
.nl-input:focus { border-color: var(--sr-primary); }
.nl-btn {
    background: var(--sr-accent);
    color: #fff;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background 0.15s;
    white-space: nowrap;
}
.nl-btn:hover { background: var(--sr-accent-dark); }
.nl-btn:disabled { opacity: 0.6; cursor: not-allowed; }
.nl-msg { margin-top: 12px; font-size: 0.95rem; min-height: 1.4em; }
.nl-msg--success { color: var(--sr-accent-dark); font-weight: 500; }
.nl-msg--error { color: var(--sr-danger); }
.nl-fine { margin-top: 12px; font-size: 0.8rem; color: var(--sr-text-secondary); opacity: 0.7; }

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 2rem; }
    .hero-stats { gap: 24px; }
    .hero-stat-number { font-size: 1.6rem; }
    .nav-links { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--sr-dark-bg); padding: 16px; border-top: 1px solid rgba(255,255,255,0.08); }
    .nav-links.open { display: flex; }
    .nav-mobile-toggle { display: block; }
    .nav-cta { display: none; }
    .card-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .nl-form-row { flex-direction: column; }
    .salary-table { font-size: 0.85rem; }
    .salary-table th, .salary-table td { padding: 8px 10px; }
}