/* Finance Mocks – blue & white theme */
:root {
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-surface: #ffffff;
    --color-surface-alt: #f1f5f9;
    --color-border: #e2e8f0;
    --color-border-strong: #cbd5e1;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-accent: #2563eb;
    --color-accent-hover: #1d4ed8;
    --color-accent-light: #eff6ff;
    --color-success: #16a34a;
    --font-sans: "DM Sans", system-ui, sans-serif;
    --font-mono: "JetBrains Mono", monospace;
    --radius: 12px;
    --header-h: 64px;
    --section-space: 32px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-h);
    background: #ffffff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    border-bottom: 1px solid var(--color-border);
}

.header-inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-accent);
    text-decoration: none;
    letter-spacing: -0.02em;
}

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

.nav-main {
    display: flex;
    align-items: center;
    gap: 28px;
}

.menu-toggle {
    display: none;
    border: 1px solid var(--color-border);
    background: #fff;
    border-radius: 10px;
    width: 40px;
    height: 40px;
    font-size: 1.25rem;
    color: var(--color-text);
    cursor: pointer;
}

.nav-main a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-main a:hover {
    color: var(--color-accent);
}

.nav-api {
    padding: 8px 14px;
    background: var(--color-accent-light);
    color: var(--color-accent) !important;
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
}

.nav-api:hover {
    background: #dbeafe;
    color: var(--color-accent-hover) !important;
}

/* Main */
.site-main {
    flex: 1;
}

/* Hero */
.hero {
    padding: var(--section-space) 0;
    text-align: center;
    background: linear-gradient(180deg, var(--color-accent-light) 0%, var(--color-bg) 100%);
}

.hero-inner {
    max-width: 720px;
    margin: 0 auto;
}

.hero-title {
    margin: 0 0 16px;
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.03em;
    color: var(--color-text);
}

.hero-subtitle {
    margin: 0 0 20px;
    font-size: 1.125rem;
    color: var(--color-text-muted);
    line-height: 1.65;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius);
    transition: background 0.2s, color 0.2s;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

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

.btn-primary:hover {
    background: var(--color-accent-hover);
    color: #fff;
}

.btn-secondary {
    background: #fff;
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
}

.btn-secondary:hover {
    background: var(--color-accent-light);
    color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1rem;
}

/* Features */
.features {
    padding: var(--section-space) 0;
    background: var(--color-bg-alt);
}

.section-title {
    margin: 0 0 14px;
    font-size: 1.75rem;
    font-weight: 700;
    text-align: center;
    letter-spacing: -0.02em;
    color: var(--color-text);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
}

.feature-card {
    padding: 28px;
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
    border-color: var(--color-accent);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.08);
}

.feature-icon {
    font-size: 2rem;
    display: block;
    margin-bottom: 12px;
}

.feature-card h3 {
    margin: 0 0 8px;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
}

.feature-card p {
    margin: 0;
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    line-height: 1.55;
}

/* Exams */
.exams {
    padding: var(--section-space) 0;
    background: #fff;
}

.exam-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.exam-list li {
    padding: 10px 20px;
    background: var(--color-accent-light);
    border: 1px solid rgba(37, 99, 235, 0.2);
    border-radius: var(--radius);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-accent);
}

/* CTA */
.cta {
    padding: var(--section-space) 0;
    background: var(--color-accent-light);
    text-align: center;
}

.cta-text {
    margin: 0 0 14px;
    font-size: 1.25rem;
    color: var(--color-text-muted);
}

/* Footer */
.site-footer {
    margin-top: auto;
    padding: 24px 0;
    border-top: 1px solid var(--color-border);
    background: #fff;
}

.footer-inner {
    text-align: center;
}

.footer-brand {
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 12px;
    color: var(--color-accent);
}

.footer-links {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 16px;
}

.footer-links a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 0.875rem;
}

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

.footer-copy {
    margin: 0;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

/* Legal & contact pages */
.legal-doc {
    padding: var(--section-space) 0 40px;
    max-width: 720px;
}

.legal-doc-title {
    margin: 0 0 8px;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.legal-doc-updated {
    margin: 0 0 28px;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.legal-doc h2 {
    margin: 28px 0 12px;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text);
}

.legal-doc p,
.legal-doc ul {
    margin: 0 0 14px;
    color: var(--color-text);
}

.legal-doc ul {
    padding-left: 1.25rem;
}

.legal-doc li {
    margin-bottom: 8px;
}

.legal-doc a {
    color: var(--color-accent);
}

.legal-doc a:hover {
    color: var(--color-accent-hover);
}

.contact-page {
    padding: var(--section-space) 0 40px;
    max-width: 640px;
}

.legal-doc-lead {
    margin: 0 0 28px;
    font-size: 1.0625rem;
    line-height: 1.65;
    color: var(--color-text);
}

.contact-card {
    margin-bottom: 24px;
    padding: 24px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}

.contact-card h2 {
    margin: 0 0 14px;
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--color-text);
}

.contact-card p {
    margin: 0 0 10px;
    color: var(--color-text);
}

.contact-card p:last-child {
    margin-bottom: 0;
}

.contact-card-plain {
    background: var(--color-surface);
}

.contact-note {
    margin-top: 12px !important;
    font-size: 0.875rem;
    color: var(--color-text-muted) !important;
}

.contact-address {
    font-style: normal;
    line-height: 1.65;
    color: var(--color-text);
}

.mobile-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.45);
    z-index: 109;
}

.mobile-sidebar {
    display: none;
    position: fixed;
    top: 0;
    right: 0;
    width: min(320px, 86vw);
    height: 100vh;
    background: #fff;
    border-left: 1px solid var(--color-border);
    transform: translateX(100%);
    transition: transform 0.25s ease;
    z-index: 110;
    padding: 14px 16px 20px;
}

.mobile-sidebar.is-open {
    transform: translateX(0);
}

.mobile-overlay.is-open {
    display: block;
}

.mobile-sidebar-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
    font-weight: 600;
}

.menu-close {
    border: 1px solid var(--color-border);
    background: #fff;
    border-radius: 8px;
    width: 36px;
    height: 36px;
    font-size: 1.4rem;
    cursor: pointer;
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.mobile-nav a {
    color: var(--color-text);
    text-decoration: none;
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid var(--color-border);
    background: var(--color-bg-alt);
    font-size: 0.95rem;
}

body.menu-open {
    overflow: hidden;
}

@media (max-width: 640px) {
    .site-header {
        height: auto;
        min-height: var(--header-h);
    }
    .nav-main {
        display: none;
    }
    .header-inner {
        padding: 10px 0;
    }
    .menu-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
    .mobile-sidebar {
        display: block;
    }
    .container {
        padding: 0 16px;
    }
    .hero {
        padding: 24px 0;
    }
    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 20px;
    }
    .btn,
    .btn-large {
        width: 100%;
        text-align: center;
    }
    .footer-links {
        flex-wrap: wrap;
        gap: 10px;
    }
    .feature-grid {
        display: flex;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        gap: 12px;
        padding-bottom: 4px;
    }
    .feature-grid::-webkit-scrollbar {
        height: 6px;
    }
    .feature-grid::-webkit-scrollbar-thumb {
        background: var(--color-border-strong);
        border-radius: 999px;
    }
    .feature-card {
        min-width: 86%;
        scroll-snap-align: center;
        padding: 20px;
    }
    .exam-list {
        display: flex;
        overflow-x: auto;
        flex-wrap: nowrap;
        justify-content: flex-start;
        scroll-snap-type: x mandatory;
        gap: 10px;
        padding-bottom: 2px;
    }
    .exam-list li {
        flex: 0 0 auto;
        scroll-snap-align: start;
        white-space: nowrap;
    }
}