/* ============================================================================
   QBO Link - Shared Site Stylesheet
   Green dark theme for marketing pages, nav, footer, and shared components.
   ============================================================================ */

/* ---------- Design Tokens ---------- */
:root {
    --qbo-primary: #2ca01c;
    --qbo-primary-hover: #248f17;
    --qbo-primary-glow: rgba(44, 160, 28, 0.4);
    --qbo-dark-bg: #0d1117;
    --qbo-card-bg: #161b22;
    --qbo-border: #30363d;
    --qbo-text: #c9d1d9;
    --qbo-text-muted: #8b949e;
    --qbo-heading: #f0f6fc;
    --qbo-success: #238636;
    --qbo-danger: #da3633;
    --qbo-section-alt: #0e1219;
    --qbo-nav-height: 64px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--qbo-nav-height);
}

body.site-page {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--qbo-dark-bg);
    color: var(--qbo-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--qbo-primary); text-decoration: none; }
a:hover { color: var(--qbo-primary-hover); }

img { max-width: 100%; height: auto; }

/* ---------- Sticky Nav ---------- */
.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--qbo-nav-height);
    background: rgba(13, 17, 23, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--qbo-border);
    z-index: 1000;
    display: flex;
    align-items: center;
}

.nav-inner {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--qbo-heading);
    text-decoration: none;
}
.nav-brand:hover { color: var(--qbo-heading); }

.nav-brand svg {
    width: 32px;
    height: 32px;
    color: var(--qbo-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links a {
    color: var(--qbo-text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}
.nav-links a:hover { color: var(--qbo-heading); }

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Hamburger */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--qbo-text);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 4px;
}

/* ---------- Buttons ---------- */
.btn-primary-green {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--qbo-primary);
    color: #fff;
    border: none;
    padding: 12px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
    text-decoration: none;
}
.btn-primary-green:hover {
    background: var(--qbo-primary-hover);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px var(--qbo-primary-glow);
}
.btn-primary-green:active { transform: translateY(0); }

.btn-outline-green {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: transparent;
    color: var(--qbo-primary);
    border: 1px solid var(--qbo-primary);
    padding: 12px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, transform 0.15s;
    text-decoration: none;
}
.btn-outline-green:hover {
    background: rgba(44, 160, 28, 0.1);
    color: var(--qbo-primary);
    transform: translateY(-2px);
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.125rem;
}

/* ---------- Page Sections ---------- */
.site-body {
    margin-top: var(--qbo-nav-height);
}

.hero-section {
    padding: 100px 24px 80px;
    text-align: center;
    background: linear-gradient(135deg, #0d1117 0%, #161b22 50%, #0d1117 100%);
}

.section {
    padding: 80px 24px;
}

.section-alt {
    padding: 80px 24px;
    background: var(--qbo-section-alt);
}

.section-inner {
    max-width: 1100px;
    margin: 0 auto;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--qbo-heading);
    margin-bottom: 16px;
    text-align: center;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--qbo-text-muted);
    max-width: 640px;
    margin: 0 auto 48px;
    text-align: center;
}

/* ---------- Cards ---------- */
.card-dark {
    background: var(--qbo-card-bg);
    border: 1px solid var(--qbo-border);
    border-radius: 12px;
    padding: 32px;
    transition: border-color 0.25s, transform 0.25s;
}
.card-dark:hover {
    border-color: var(--qbo-primary);
    transform: translateY(-4px);
}

/* ---------- Grid Helpers ---------- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* ---------- Feature Icon ---------- */
.feature-icon {
    width: 56px;
    height: 56px;
    background: rgba(44, 160, 28, 0.12);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--qbo-primary);
    margin-bottom: 16px;
}

/* ---------- Badge ---------- */
.badge-green {
    display: inline-block;
    background: rgba(44, 160, 28, 0.15);
    color: var(--qbo-primary);
    border: 1px solid rgba(44, 160, 28, 0.3);
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

/* ---------- Pricing Card ---------- */
.pricing-card {
    background: var(--qbo-card-bg);
    border: 1px solid var(--qbo-border);
    border-radius: 16px;
    padding: 40px 32px;
    text-align: center;
    transition: border-color 0.25s, transform 0.25s;
}
.pricing-card:hover {
    border-color: var(--qbo-primary);
    transform: translateY(-4px);
}
.pricing-card.featured {
    border-color: var(--qbo-primary);
    box-shadow: 0 0 32px var(--qbo-primary-glow);
}

.pricing-amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--qbo-heading);
}
.pricing-amount span {
    font-size: 1rem;
    color: var(--qbo-text-muted);
    font-weight: 400;
}

.pricing-features {
    list-style: none;
    padding: 0;
    margin: 24px 0;
    text-align: left;
}
.pricing-features li {
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--qbo-text-muted);
}
.pricing-features li::before {
    content: '\2713';
    color: var(--qbo-primary);
    font-weight: 700;
}

/* ---------- Steps ---------- */
.steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    counter-reset: step;
}
.step {
    text-align: center;
}
.step-number {
    width: 48px;
    height: 48px;
    background: var(--qbo-primary);
    color: #fff;
    font-size: 1.25rem;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}
.step h3 {
    color: var(--qbo-heading);
    font-size: 1.05rem;
    margin-bottom: 8px;
}
.step p {
    color: var(--qbo-text-muted);
    font-size: 0.9rem;
}

/* ---------- FAQ Accordion ---------- */
.faq-item {
    border: 1px solid var(--qbo-border);
    border-radius: 8px;
    margin-bottom: 12px;
    overflow: hidden;
}
.faq-question {
    width: 100%;
    background: var(--qbo-card-bg);
    color: var(--qbo-heading);
    border: none;
    padding: 18px 20px;
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.2s;
}
.faq-question:hover { background: var(--qbo-section-alt); }
.faq-question::after {
    content: '+';
    font-size: 1.4rem;
    color: var(--qbo-primary);
    transition: transform 0.2s;
}
.faq-item.open .faq-question::after {
    content: '\2212';
}
.faq-answer {
    display: none;
    padding: 0 20px 18px;
    color: var(--qbo-text-muted);
    background: var(--qbo-card-bg);
    line-height: 1.7;
}
.faq-item.open .faq-answer { display: block; }

/* ---------- Footer ---------- */
.site-footer {
    border-top: 1px solid var(--qbo-border);
    padding: 32px 24px;
    background: var(--qbo-dark-bg);
}

.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-copy {
    color: var(--qbo-text-muted);
    font-size: 0.85rem;
}

.footer-links {
    display: flex;
    gap: 24px;
    list-style: none;
    margin: 0;
    padding: 0;
}
.footer-links a {
    color: var(--qbo-text-muted);
    font-size: 0.85rem;
}
.footer-links a:hover { color: var(--qbo-heading); }

/* ---------- Scroll Reveal ---------- */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- Staggered Step Reveal ---------- */
.step-reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}
.step-reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---------- Form Styles (for subscribe page) ---------- */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--qbo-text);
    font-size: 0.9rem;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--qbo-dark-bg);
    border: 1px solid var(--qbo-border);
    border-radius: 8px;
    color: var(--qbo-heading);
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.form-input:focus {
    outline: none;
    border-color: var(--qbo-primary);
    box-shadow: 0 0 0 3px rgba(44, 160, 28, 0.15);
}

.form-input::placeholder { color: var(--qbo-text-muted); }

.form-hint {
    font-size: 0.8rem;
    color: var(--qbo-text-muted);
    margin-top: 4px;
}

/* ---------- Plan Toggle ---------- */
.plan-toggle {
    display: flex;
    background: var(--qbo-card-bg);
    border: 1px solid var(--qbo-border);
    border-radius: 10px;
    overflow: hidden;
    max-width: 360px;
    margin: 0 auto 32px;
}
.plan-toggle-btn {
    flex: 1;
    padding: 12px 20px;
    background: transparent;
    border: none;
    color: var(--qbo-text-muted);
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
    font-size: 0.95rem;
}
.plan-toggle-btn.active {
    background: var(--qbo-primary);
    color: #fff;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-actions .btn-outline-green { display: none; }
    .nav-toggle { display: block; }

    /* Mobile menu */
    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: var(--qbo-nav-height);
        left: 0;
        right: 0;
        background: rgba(13, 17, 23, 0.98);
        border-bottom: 1px solid var(--qbo-border);
        padding: 16px 24px 24px;
        gap: 16px;
    }

    .hero-section { padding: 60px 20px 50px; }
    .section, .section-alt { padding: 50px 20px; }
    .section-title { font-size: 1.6rem; }

    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .steps { grid-template-columns: 1fr; }

    .pricing-card { padding: 28px 20px; }
}

@media (max-width: 480px) {
    .hero-section h1 { font-size: 1.75rem; }
    .btn-primary-green, .btn-outline-green { padding: 10px 20px; font-size: 0.9rem; }
    .nav-inner { padding: 0 16px; }
}

/* ---------- Utility ---------- */
.text-center { text-align: center; }
.text-green { color: var(--qbo-primary); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.gap-16 { gap: 16px; }