/* 
    Bookmark Search Pro 
    Design System & Main Styles
*/

:root {
    /* Colors */
    --bg-color: #0c111d;
    --bg-darker: #080a10;
    --primary: #6366f1;
    --primary-glow: rgba(99, 102, 241, 0.3);
    --secondary: #06b6d4;
    --accent: #a855f7;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-heading: #ffffff;
    --card-bg: rgba(31, 41, 55, 0.4);
    --card-border: rgba(255, 255, 255, 0.1);
    --glass-bg: rgba(15, 23, 42, 0.8);
    --glass-border: rgba(255, 255, 255, 0.1);
    
    /* Layout */
    --container-width: 1200px;
    --section-spacing: 120px;
    --navbar-height: 80px;
    --border-radius-lg: 24px;
    --border-radius-md: 16px;
    --border-radius-sm: 8px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    background-color: var(--bg-color);
    color: var(--text-main);
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: 'Outfit', sans-serif;
    color: var(--text-heading);
    font-weight: 700;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
}

/* --- Utilities --- */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

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

.section-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 100px;
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 24px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
}

.btn-sm {
    padding: 8px 18px;
    font-size: 14px;
}

.btn-lg {
    padding: 16px 36px;
    font-size: 18px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    box-shadow: 0 10px 20px -5px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px -5px var(--primary-glow);
    filter: brightness(1.1);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    backdrop-filter: blur(10px);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--text-main);
}

/* --- Navigation --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--navbar-height);
    background: transparent;
    z-index: 1000;
    transition: var(--transition-smooth);
}

.navbar.scrolled {
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid var(--glass-border);
    height: 70px;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: 'Outfit', sans-serif;
    font-size: 20px;
    font-weight: 700;
}

.logo span span {
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-img {
    width: 32px;
    height: 32px;
}

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-links li a {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 15px;
}

.nav-links li a:hover {
    color: var(--text-main);
}

/* --- Hero --- */
.hero {
    padding-top: calc(var(--navbar-height) + 60px);
    padding-bottom: var(--section-spacing);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -200px;
    right: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
    z-index: -1;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 60px;
}

.hero-title {
    font-size: 64px;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero-title span {
    display: block;
    background: linear-gradient(to bottom, #fff, var(--text-muted));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 500px;
}

.hero-actions {
    display: flex;
    gap: 20px;
}

.hero-image-wrapper {
    position: relative;
}

.hero-image {
    width: 100%;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 40px 100px -20px rgba(0,0,0,0.5);
    border: 1px solid var(--glass-border);
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: var(--transition-smooth);
}

.hero-image:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.hero-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
    z-index: -1;
}

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

.section-title {
    font-size: 44px;
    margin-bottom: 60px;
}

.section-title span {
    color: var(--primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius-md);
    padding: 40px;
    transition: var(--transition-smooth);
}

.feature-card:hover {
    transform: translateY(-10px);
    background: rgba(31, 41, 55, 0.6);
    border-color: var(--primary);
}

.feature-icon-box {
    width: 64px;
    height: 64px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.feature-icon-box img {
    width: 40px;
    height: 40px;
}

.feature-card h3 {
    margin-bottom: 16px;
    font-size: 22px;
}

.feature-card p {
    color: var(--text-muted);
}

/* --- Installation --- */
.installation {
    padding: var(--section-spacing) 0;
}

.install-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.install-card {
    padding: 30px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius-md);
    position: relative;
    overflow: hidden;
}

.install-card.active {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.step-num {
    font-size: 60px;
    font-weight: 800;
    font-family: 'Outfit', sans-serif;
    color: rgba(255, 255, 255, 0.05);
    position: absolute;
    top: -10px;
    right: 10px;
}

.install-card h3 {
    margin-bottom: 12px;
    position: relative;
}

.install-card p {
    color: var(--text-muted);
    font-size: 15px;
    margin-bottom: 20px;
}

.link-arrow {
    color: var(--primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* --- Docs --- */
.docs {
    padding: var(--section-spacing) 0;
    background-color: var(--bg-darker);
}

.docs-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 60px;
    margin-top: 40px;
}

.docs-sidebar {
    background: var(--card-bg);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--card-border);
    padding: 20px;
    height: fit-content;
    position: sticky;
    top: 100px;
}

.docs-nav li {
    padding: 12px 16px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    color: var(--text-muted);
}

.docs-nav li.active {
    background: var(--primary);
    color: white;
}

.docs-nav li:not(.active):hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
}

.docs-content {
    background: var(--card-bg);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--card-border);
    padding: 50px;
    min-height: 500px;
}

.doc-item {
    display: none;
    animation: fadeIn 0.5s ease;
}

.doc-item.active {
    display: block;
}

.doc-item h3 {
    font-size: 32px;
    margin-bottom: 20px;
}

.doc-item p {
    margin-bottom: 20px;
    color: var(--text-muted);
    font-size: 17px;
}

.doc-item ul, .doc-item ol {
    margin-left: 24px;
    margin-bottom: 30px;
    color: var(--text-muted);
}

.doc-item li {
    margin-bottom: 12px;
}

.doc-info-box {
    padding: 20px;
    background: rgba(99, 102, 241, 0.1);
    border-left: 4px solid var(--primary);
    border-radius: var(--border-radius-sm);
}

.view-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 20px;
}

.view-item {
    padding: 12px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-sm);
}

/* --- Footer --- */
footer {
    padding: 80px 0 40px;
    background-color: var(--bg-color);
    border-top: 1px solid var(--glass-border);
}

.footer-layout {
    display: flex;
    justify-content: space-between;
    margin-bottom: 60px;
}

.footer-brand p {
    color: var(--text-muted);
    margin-top: 16px;
}

.footer-links {
    display: flex;
    gap: 80px;
}

.link-group h4 {
    margin-bottom: 20px;
    font-size: 16px;
}

.link-group a {
    display: block;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.link-group a:hover {
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid var(--glass-border);
    padding-top: 30px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}

/* --- Animations --- */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 991px) {
    .hero-container { grid-template-columns: 1fr; text-align: center; }
    .hero-title { font-size: 48px; }
    .hero-subtitle { margin: 0 auto 40px; }
    .hero-actions { justify-content: center; }
    .features-grid, .install-steps { grid-template-columns: 1fr; }
    .docs-layout { grid-template-columns: 1fr; }
    .docs-sidebar { position: static; width: 100%; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .section-title { font-size: 32px; }
}