/* ═══════════════════════════════════════════
   Bib+ Website — Global Styles
   ═══════════════════════════════════════════ */

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: #333;
    line-height: 1.6;
    background: #fff;
    -webkit-font-smoothing: antialiased;
}

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

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

ul {
    list-style: none;
}

/* --- Variables --- */
:root {
    --primary: #e43a15;
    --primary-end: #e65251;
    --gradient: linear-gradient(135deg, #e43a15, #e65251);
    --text: #333;
    --text-light: #666;
    --text-muted: #999;
    --bg: #fff;
    --bg-light: #f8f9fa;
    --bg-dark: #1b1b1b;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow: 0 4px 24px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
    --max-width: 1200px;
    --transition: 0.3s ease;
}

/* --- Navbar --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    transition: box-shadow var(--transition);
}

.navbar.scrolled {
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
}

.navbar-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.navbar-links {
    display: flex;
    align-items: center;
    gap: 28px;
}

.navbar-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-light);
    transition: color var(--transition);
}

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

.lang-switch {
    display: flex;
    align-items: center;
    gap: 4px;
    background: var(--bg-light);
    border-radius: 20px;
    padding: 4px;
    font-size: 0.8rem;
    font-weight: 600;
}

.lang-switch button {
    border: none;
    background: transparent;
    padding: 4px 10px;
    border-radius: 16px;
    cursor: pointer;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.8rem;
    transition: all var(--transition);
}

.lang-switch button.active {
    background: var(--primary);
    color: #fff;
}

.mobile-menu-btn {
    display: none;
    border: none;
    background: none;
    cursor: pointer;
    padding: 8px;
    font-size: 1.5rem;
    color: var(--text);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid rgba(0,0,0,0.06);
    box-shadow: var(--shadow);
    padding: 16px 24px;
    z-index: 99;
}

.mobile-menu.open {
    display: block;
}

.mobile-menu a {
    display: block;
    padding: 12px 0;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text);
    border-bottom: 1px solid var(--bg-light);
}

.mobile-menu a:last-child {
    border-bottom: none;
}

/* --- Hero --- */
.hero {
    background: var(--gradient);
    padding: 140px 24px 80px;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 60px;
    background: #fff;
    clip-path: ellipse(55% 100% at 50% 100%);
}

.hero h1 {
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto 32px;
    line-height: 1.5;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    text-decoration: none;
}

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

.btn-white:hover {
    background: #f0f0f0;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255,255,255,0.5);
}

.btn-outline:hover {
    border-color: #fff;
    background: rgba(255,255,255,0.1);
    transform: translateY(-2px);
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(228,58,21,0.4);
}

/* --- Section Common --- */
.section {
    padding: 80px 24px;
}

.section-light {
    background: var(--bg-light);
}

.section-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto 48px;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
}

/* --- Features --- */
.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.feature-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* --- How it works --- */
.steps-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    counter-reset: step;
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--gradient);
    color: #fff;
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 16px;
}

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

.step p {
    font-size: 0.95rem;
    color: var(--text-light);
    max-width: 280px;
    margin: 0 auto;
}

/* --- Quote / Testimonial --- */
.quote-section {
    background: var(--gradient);
    padding: 80px 24px;
    text-align: center;
    color: #fff;
}

.quote-text {
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 1.5;
    max-width: 700px;
    margin: 0 auto 16px;
    font-style: italic;
}

.quote-author {
    font-size: 1rem;
    opacity: 0.8;
}

/* --- CTA --- */
.cta-section {
    text-align: center;
    padding: 80px 24px;
}

.cta-section h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 12px;
}

.cta-section p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 32px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* --- Footer --- */
.footer {
    background: var(--bg-dark);
    color: #fff;
    padding: 48px 24px 24px;
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
}

.footer-brand .navbar-logo {
    margin-bottom: 8px;
}

.footer-brand p {
    color: #999;
    font-size: 0.9rem;
}

.footer-links h4 {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #999;
    margin-bottom: 12px;
}

.footer-links a {
    display: block;
    color: #ccc;
    font-size: 0.9rem;
    padding: 4px 0;
    transition: color var(--transition);
}

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

.footer-bottom {
    max-width: var(--max-width);
    margin: 32px auto 0;
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    color: #666;
    font-size: 0.85rem;
}

/* --- Legal Pages --- */
.legal-page {
    padding: 100px 24px 60px;
    max-width: 800px;
    margin: 0 auto;
}

.legal-page h1 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 8px;
}

.legal-page .legal-date {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 32px;
}

.legal-page h2 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text);
    margin-top: 32px;
    margin-bottom: 12px;
}

.legal-page p {
    color: var(--text-light);
    margin-bottom: 16px;
    line-height: 1.7;
}

.legal-page ul {
    list-style: disc;
    padding-left: 24px;
    margin-bottom: 16px;
}

.legal-page li {
    color: var(--text-light);
    margin-bottom: 8px;
    line-height: 1.6;
}

/* --- FAQ Page --- */
.faq-page {
    padding: 100px 24px 60px;
    max-width: 800px;
    margin: 0 auto;
}

.faq-page h1 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 8px;
    text-align: center;
}

.faq-page > p {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 40px;
}

.faq-item {
    border: 1px solid #e8e8e8;
    border-radius: var(--radius);
    margin-bottom: 12px;
    overflow: hidden;
    transition: box-shadow var(--transition);
}

.faq-item:hover {
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
}

.faq-item summary {
    padding: 20px 24px;
    font-weight: 600;
    font-size: 1rem;
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    list-style: none;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: '+';
    font-size: 1.4rem;
    font-weight: 300;
    color: var(--primary);
    transition: transform var(--transition);
}

.faq-item[open] summary::after {
    content: '-';
}

.faq-item .faq-answer {
    padding: 0 24px 20px;
    color: var(--text-light);
    line-height: 1.7;
}

/* --- Animations --- */
.animate {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Responsive --- */
@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: 1fr 1fr;
    }

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

    .footer-inner {
        grid-template-columns: 2fr 1fr 1fr;
    }

    .hero h1 {
        font-size: 3.2rem;
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: 1fr 1fr 1fr 1fr;
    }

    .navbar-links {
        display: flex;
    }

    .mobile-menu-btn {
        display: none !important;
    }

    .hero h1 {
        font-size: 3.5rem;
    }

    .section {
        padding: 100px 24px;
    }
}

@media (max-width: 767px) {
    .navbar-links {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .hero {
        padding: 120px 20px 60px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .quote-text {
        font-size: 1.2rem;
    }

    .section-title {
        font-size: 1.6rem;
    }
}