/* Modern Website Styles for Book Readers Mobile Lamp */

:root {
    --primary: #FFB74D;
    --primary-dark: #FFA726;
    --primary-light: #FFE082;
    --background: #0A0A0A;
    --surface: #1A1A1A;
    --surface-light: #2A2A2A;
    --text-primary: #E0E0E0;
    --text-secondary: #9E9E9E;
    --accent: #FFB74D;
    --success: #66BB6A;
    --gradient: linear-gradient(135deg, #FFB74D 0%, #FFA726 100%);
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    box-shadow: var(--shadow);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

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

.logo-icon {
    font-size: 1.5rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.nav-mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.nav-mobile-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    width: 300px;
    height: 600px;
    background: var(--surface);
    border-radius: 40px;
    padding: 15px;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #FFB74D 0%, #FFA726 50%, #FF9800 100%);
    border-radius: 30px;
    animation: breathing 4s ease-in-out infinite;
}

@keyframes breathing {

    0%,
    100% {
        opacity: 0.95;
    }

    50% {
        opacity: 1;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient);
    color: #0A0A0A;
    box-shadow: 0 4px 15px rgba(255, 183, 77, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 183, 77, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--surface-light);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-large {
    padding: 1.125rem 2.5rem;
    font-size: 1.125rem;
}

.btn-icon {
    width: 20px;
    height: 20px;
}

/* Sections */
section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 3rem;
}

/* Features */
.features {
    background: var(--surface);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--background);
    padding: 2rem;
    border-radius: 16px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* How It Works */
.how-it-works {
    background: var(--background);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.step {
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--gradient);
    color: #0A0A0A;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
}

.step h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.step p {
    color: var(--text-secondary);
}

/* Download Section */
.download {
    background: var(--surface);
    text-align: center;
}

.download-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.download-content p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.download-note {
    margin-top: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Content Pages (Privacy, Terms, Support) */
.page-header {
    padding: 120px 0 60px;
    text-align: center;
    background: var(--surface);
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.content-section {
    padding: 60px 0;
}

.content-section .container {
    max-width: 800px;
}

.content-section h2 {
    font-size: 2rem;
    margin: 2rem 0 1rem;
    color: var(--primary);
}

.content-section h3 {
    font-size: 1.5rem;
    margin: 1.5rem 0 1rem;
}

.content-section p {
    margin-bottom: 1rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.content-section ul,
.content-section ol {
    margin: 1rem 0 1rem 2rem;
    color: var(--text-secondary);
}

.content-section li {
    margin-bottom: 0.5rem;
    line-height: 1.8;
}

.content-section strong {
    color: var(--text-primary);
}

.content-box {
    background: var(--surface);
    padding: 2rem;
    border-radius: 12px;
    margin: 2rem 0;
    border-left: 4px solid var(--primary);
}

/* FAQ */
.faq-item {
    background: var(--surface);
    padding: 1.5rem;
    border-radius: 12px;
    margin-bottom: 1rem;
}

.faq-item h3 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

/* Footer */
.footer {
    background: var(--surface);
    padding: 60px 0 30px;
    margin-top: 80px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-col h4 {
    margin-bottom: 1.5rem;
    color: var(--primary);
}

.footer-col p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 0.75rem;
}

.footer-col ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-col ul li a:hover {
    color: var(--primary);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--surface-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--primary);
    color: #0A0A0A;
    transform: translateY(-3px);
}

.social-links svg {
    width: 20px;
    height: 20px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--surface-light);
    color: var(--text-secondary);
}

.footer-bottom p {
    margin: 0.5rem 0;
}

/* Responsive */
@media (max-width: 968px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .phone-mockup {
        width: 250px;
        height: 500px;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--surface);
        flex-direction: column;
        padding: 2rem;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .nav-mobile-toggle {
        display: flex;
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .section-title {
        font-size: 2rem;
    }

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

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