/* 
   Zenith - Support Center Stylesheet
   Strict Light Mode • No Gradients • Solid Apple System Design System
*/

:root {
    /* Color Palette matching Theme.swift (Light Mode) */
    --bg-main: #f4f5f8;
    --bg-card: #ffffff;
    --bg-card-elevated: #ffffff;
    --bg-inset: #edeef2;
    --bg-subtle: #f8f9fc;

    /* Borders & Dividers */
    --border-color: rgba(0, 0, 0, 0.08);
    --border-strong: rgba(0, 0, 0, 0.14);

    /* Typography / Ink */
    --text-primary: #171921;
    --text-secondary: #636366;
    --text-muted: #8e8e93;

    /* Zenith Brand Accent Solid Colors (No Gradients) */
    --accent-indigo: #5e72e4;
    --accent-indigo-bg: #eef2ff;
    --accent-teal: #20c997;
    --accent-teal-bg: #e6fcf5;
    --accent-amber: #f5a623;
    --accent-amber-bg: #fff9db;
    --accent-coral: #ff521f;
    --accent-coral-bg: #ffe3e3;

    /* Fonts & Radii */
    --font-stack: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --shadow-card: 0 4px 14px rgba(0, 0, 0, 0.04);
}

/* Reset & Global */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-family: var(--font-stack);
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
}

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

/* Navigation Header */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
}

.brand-icon {
    width: 38px;
    height: 38px;
    border-radius: 9px;
    object-fit: cover;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    line-height: 1.2;
}

.brand-subtitle {
    font-size: 0.78rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-link {
    text-decoration: none;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 999px;
    transition: all 0.2s ease;
}

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

.nav-link.active {
    color: var(--accent-indigo);
    background-color: var(--accent-indigo-bg);
}

.btn-nav {
    background-color: var(--accent-indigo);
    color: #ffffff !important;
    padding: 8px 18px;
}

.btn-nav:hover {
    background-color: #4f5fd8 !important;
}

/* Hero Section */
.hero {
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-color);
    padding: 56px 0 44px;
}

.hero-app-header {
    display: flex;
    align-items: flex-start;
    gap: 24px;
    margin-bottom: 32px;
}

.hero-app-icon {
    width: 84px;
    height: 84px;
    border-radius: 20px;
    object-fit: cover;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.1);
    flex-shrink: 0;
}

.badge-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: var(--accent-indigo-bg);
    color: var(--accent-indigo);
    border: 1px solid rgba(94, 114, 228, 0.2);
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.badge-dot {
    width: 7px;
    height: 7px;
    background-color: var(--accent-indigo);
    border-radius: 50%;
}

.hero h1 {
    font-size: 2.4rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    margin-bottom: 10px;
    line-height: 1.2;
}

.hero-lead {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.5;
    max-width: 680px;
}

/* Search Box */
.search-container {
    max-width: 720px;
}

.search-box-large {
    position: relative;
    display: flex;
    align-items: center;
}

.search-box-large svg {
    position: absolute;
    left: 18px;
    color: var(--text-muted);
}

.search-box-large input {
    width: 100%;
    padding: 16px 20px 16px 52px;
    font-family: var(--font-stack);
    font-size: 1.05rem;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    outline: none;
    transition: all 0.2s ease;
}

.search-box-large input:focus {
    border-color: var(--accent-indigo);
    background-color: #ffffff;
    box-shadow: 0 0 0 4px rgba(94, 114, 228, 0.12);
}

/* Topics Grid */
.topics-section {
    padding: 56px 0 40px;
}

.section-title {
    margin-bottom: 28px;
}

.section-title h2 {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    margin-bottom: 6px;
}

.section-title p {
    font-size: 0.98rem;
    color: var(--text-secondary);
}

.topics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 22px;
}

.topic-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 26px;
    box-shadow: var(--shadow-card);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
}

.topic-card:hover {
    border-color: var(--border-strong);
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(0, 0, 0, 0.06);
}

.topic-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.icon-teal {
    background-color: var(--accent-teal-bg);
    color: var(--accent-teal);
}

.icon-indigo {
    background-color: var(--accent-indigo-bg);
    color: var(--accent-indigo);
}

.icon-coral {
    background-color: var(--accent-coral-bg);
    color: var(--accent-coral);
}

.icon-amber {
    background-color: var(--accent-amber-bg);
    color: var(--accent-amber);
}

.topic-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.topic-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 18px;
    flex-grow: 1;
}

.topic-link {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--accent-indigo);
}

/* FAQ Section */
.faq-section {
    padding: 40px 0 60px;
}

.faq-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.faq-header h2 {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.category-pills {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.pill-btn {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 7px 16px;
    border-radius: 999px;
    font-family: var(--font-stack);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.pill-btn.active {
    background-color: var(--accent-indigo-bg);
    color: var(--accent-indigo);
    border-color: rgba(94, 114, 228, 0.3);
}

/* Accordion */
.faq-accordion {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: border-color 0.2s ease;
}

.faq-item.open {
    border-color: rgba(94, 114, 228, 0.4);
}

.faq-question {
    width: 100%;
    text-align: left;
    padding: 20px 24px;
    background: none;
    border: none;
    font-family: var(--font-stack);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    cursor: pointer;
}

.faq-chevron {
    color: var(--text-muted);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

.faq-item.open .faq-chevron {
    transform: rotate(180deg);
    color: var(--accent-indigo);
}

.faq-answer {
    display: none;
    padding: 0 24px 24px;
    font-size: 0.96rem;
    color: var(--text-primary);
    line-height: 1.6;
    border-top: 1px solid var(--border-color);
    margin-top: -4px;
    padding-top: 18px;
}

.faq-item.open .faq-answer {
    display: block;
}

.step-list, .bullet-list {
    margin: 12px 0 12px 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.callout {
    margin-top: 14px;
    padding: 14px 18px;
    border-radius: var(--radius-md);
    background-color: var(--accent-indigo-bg);
    border: 1px solid rgba(94, 114, 228, 0.2);
    font-size: 0.9rem;
    color: #2b3990;
}

/* Contact Section */
.contact-section {
    padding: 20px 0 72px;
}

.contact-card {
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-card);
}

.contact-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 28px;
}

.contact-header h2 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.contact-header p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.contact-details {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 28px;
    align-items: center;
}

.contact-info-box {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.info-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    font-size: 0.92rem;
}

.info-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.info-value {
    color: var(--text-primary);
    font-weight: 700;
    text-decoration: none;
}

a.info-value:hover {
    color: var(--accent-indigo);
    text-decoration: underline;
}

.contact-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    text-align: center;
}

.btn-primary {
    width: 100%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background-color: var(--accent-indigo);
    color: #ffffff;
    text-decoration: none;
    font-family: var(--font-stack);
    font-size: 1rem;
    font-weight: 700;
    padding: 14px 24px;
    border-radius: var(--radius-md);
    transition: background-color 0.2s ease;
    box-shadow: 0 4px 12px rgba(94, 114, 228, 0.25);
}

.btn-primary:hover {
    background-color: #4f5fd8;
}

.contact-subtext {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Footer */
.footer {
    background-color: #ffffff;
    border-top: 1px solid var(--border-color);
    padding: 36px 0;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-icon {
    width: 32px;
    height: 32px;
    border-radius: 7px;
}

.footer-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
}

.footer-copy {
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s ease;
}

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

/* Responsive */
@media (max-width: 860px) {
    .hero-app-header {
        flex-direction: column;
        gap: 16px;
    }

    .contact-details {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 1.9rem;
    }
}