/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #667eea;
    --primary-dark: #5568d3;
    --secondary-color: #764ba2;
    --text-dark: #1a202c;
    --text-light: #4a5568;
    --text-muted: #718096;
    --bg-light: #f7fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-white);
}

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

/* Header & Navigation */
.header {
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    text-decoration: none;
}

.logo-icon {
    font-size: 2rem;
}

.logo-image {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: 10px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

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

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

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    transition: all 0.3s;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg-light);
    color: var(--text-dark);
}

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

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Hero Section */
.hero {
    padding: 4rem 0;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.hero-stats {
    display: flex;
    gap: 2rem;
}

.stat {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
}

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

/* Phone Mockup */
.phone-mockup {
    position: relative;
    width: 300px;
    height: 600px;
    margin: 0 auto;
    background: var(--text-dark);
    border-radius: 40px;
    padding: 15px;
    box-shadow: var(--shadow-lg);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 30px;
    overflow: hidden;
}

.app-preview {
    padding: 2rem;
    text-align: center;
}

.preview-header {
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
}

.preview-icon {
    font-size: 4rem;
    margin: 1rem 0;
}

.preview-arrow {
    font-size: 2rem;
    color: var(--primary-color);
    margin: 1rem 0;
}

.hero-screenshot {
    display: flex;
    justify-content: center;
}

.hero-screenshot-image {
    width: min(340px, 100%);
    height: auto;
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
}

.carousel {
    position: relative;
    width: min(340px, 100%);
}

.carousel-track {
    position: relative;
}

.carousel-slide {
    display: none;
    width: 100%;
    height: auto;
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
}

.carousel-slide.is-active {
    display: block;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.6);
    background: rgba(0, 0, 0, 0.35);
    color: white;
    font-size: 24px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.15s ease, background 0.15s ease;
}

.carousel-btn:hover {
    background: rgba(0, 0, 0, 0.5);
}

.carousel-btn:active {
    transform: translateY(-50%) scale(0.96);
}

.carousel-btn-prev {
    left: 10px;
}

.carousel-btn-next {
    right: 10px;
}

.carousel-dots {
    position: absolute;
    left: 50%;
    bottom: 10px;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(0, 0, 0, 0.25);
}

.carousel-dot {
    width: 8px;
    height: 8px;
    border-radius: 999px;
    border: 0;
    background: rgba(255, 255, 255, 0.55);
    cursor: pointer;
}

.carousel-dot.is-active {
    background: rgba(255, 255, 255, 0.95);
}

/* Features Section */
.features {
    padding: 5rem 0;
    background: var(--bg-white);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section-description {
    font-size: 1.25rem;
    color: var(--text-light);
}

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

.feature-card {
    padding: 2rem;
    background: var(--bg-light);
    border-radius: 12px;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

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

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

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

/* How It Works Section */
.how-it-works {
    padding: 5rem 0;
    background: var(--bg-light);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.step {
    text-align: center;
}

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

.step-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

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

/* Privacy Highlight Section */
.privacy-highlight {
    padding: 5rem 0;
    background: var(--bg-white);
}

.privacy-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.privacy-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.privacy-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.privacy-content p {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.privacy-features {
    list-style: none;
    margin-bottom: 2rem;
}

.privacy-features li {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

/* Download Section */
.download {
    padding: 5rem 0;
    background: var(--gradient);
    color: white;
}

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

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

.download-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 2rem;
    background: white;
    color: var(--text-dark);
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s;
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.download-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.download-store {
    display: block;
    font-size: 1.2rem;
    font-weight: 700;
}

.download-info {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.info-badge {
    padding: 0.5rem 1rem;
    background: rgba(255,255,255,0.2);
    border-radius: 20px;
    font-size: 0.9rem;
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.footer-section h4 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.footer-section p {
    color: rgba(255,255,255,0.7);
    margin-bottom: 1rem;
}

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

.social-link {
    color: white;
    transition: color 0.3s;
}

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

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: white;
}

.footer-info {
    list-style: none;
    color: rgba(255,255,255,0.7);
}

.footer-info li {
    margin-bottom: 0.5rem;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 2rem;
    text-align: center;
    color: rgba(255,255,255,0.7);
}

.footer-note {
    margin-top: 0.5rem;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow-md);
        display: none;
    }

    .nav-menu.active {
        display: flex;
    }

    .hero-content {
        grid-template-columns: 1fr;
    }

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

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

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

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

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

    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

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

    .btn-large {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
}

/* Additional Pages Styles */
.page-hero {
    padding: 4rem 0 2rem;
    background: var(--gradient);
    color: white;
    text-align: center;
}

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

.page-hero p {
    font-size: 1.25rem;
    opacity: 0.9;
}

.features-detail {
    padding: 4rem 0;
}

.feature-detail {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 3rem;
    align-items: center;
    margin-bottom: 4rem;
}

.feature-detail.reverse {
    grid-template-columns: 1fr 150px;
}

.feature-detail.reverse .feature-detail-content {
    order: -1;
}

.feature-detail-icon {
    font-size: 6rem;
    text-align: center;
}

.feature-detail-content h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.feature-detail-content p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.feature-detail-content ul {
    list-style: none;
    padding-left: 0;
}

.feature-detail-content li {
    padding: 0.5rem 0;
    color: var(--text-light);
}

.feature-detail-content li:before {
    content: "✓ ";
    color: var(--primary-color);
    font-weight: bold;
    margin-right: 0.5rem;
}

.privacy-page {
    padding: 4rem 0;
}

.privacy-box {
    background: linear-gradient(135deg, #f0f4ff 0%, #e6f0ff 100%);
    border-left: 4px solid var(--primary-color);
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 3rem;
}

.privacy-box h2 {
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.privacy-section {
    margin-bottom: 3rem;
}

.privacy-section h3 {
    font-size: 1.8rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.privacy-section ul {
    margin-left: 2rem;
}

.privacy-section li {
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

.cta-box {
    background: var(--bg-light);
    padding: 3rem;
    border-radius: 12px;
    text-align: center;
    margin-top: 4rem;
}

.cta-box h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.cta-box p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

@media (max-width: 768px) {
    .page-hero h1 {
        font-size: 2rem;
    }

    .feature-detail,
    .feature-detail.reverse {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .feature-detail.reverse .feature-detail-content {
        order: 0;
    }

    .feature-detail-icon {
        font-size: 4rem;
    }
}