/* Global Styles */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

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

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

/* Navigation */
.navbar {
    background: rgba(30, 41, 59, 0.95);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    padding: 1rem 0;
}

.navbar-brand {
    font-size: 1.5rem;
    color: white !important;
}

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.8) !important;
    font-weight: 500;
    transition: color 0.3s ease;
    margin: 0 0.5rem;
}

.navbar-nav .nav-link:hover {
    color: white !important;
}

/* Hero Section */
.hero-section {
    background: var(--gradient-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><polygon fill="rgba(255,255,255,0.1)" points="0,1000 1000,0 1000,1000"/></svg>');
    background-size: cover;
}

.hero-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.3) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-buttons .btn {
    padding: 0.75rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.btn-primary:hover {
    background: #d97706;
    border-color: #d97706;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

/* Phone Mockup */
.phone-mockup {
    position: relative;
    display: inline-block;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.3));
}

.phone-screen {
    width: 280px;
    height: 560px;
    background: linear-gradient(145deg, #2a2a2a, #1a1a1a);
    border-radius: 30px;
    padding: 8px;
    box-shadow: var(--shadow-xl),
                inset 0 1px 0 rgba(255, 255, 255, 0.1);
    position: relative;
    margin: 0 auto;
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
}

.phone-screen::before {
    content: '';
    position: absolute;
    top: 15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #333, #555, #333);
    border-radius: 2px;
    z-index: 10;
}

.phone-screen::after {
    content: '';
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 4px;
    background: #333;
    border-radius: 2px;
    z-index: 10;
}

.app-screenshot {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 22px;
    display: block;
}

.app-preview {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    height: 100%;
    border-radius: 20px;
    padding: 20px;
    color: white;
}

.app-header {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
    font-size: 1.2rem;
    font-weight: 600;
}

.app-header i {
    margin-right: 10px;
    font-size: 1.5rem;
}

.app-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.stat-card {
    background: rgba(255, 255, 255, 0.1);
    padding: 20px;
    border-radius: 15px;
    text-align: center;
    backdrop-filter: blur(10px);
}

.stat-card h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.stat-card p {
    margin: 0;
    opacity: 0.8;
    font-size: 0.9rem;
}

/* Features Section */
.features-section {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 80px 0;
    position: relative;
}

.features-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.2), transparent);
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    height: 100%;
    border: 1px solid #e2e8f0;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: white;
    position: relative;
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.3);
    transition: all 0.3s ease;
}

.feature-icon::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: var(--gradient-primary);
    border-radius: 50%;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
    box-shadow: 0 12px 35px rgba(37, 99, 235, 0.4);
}

.feature-card:hover .feature-icon::before {
    opacity: 1;
}

.feature-card h4 {
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.feature-card p {
    color: var(--secondary-color);
    line-height: 1.6;
}

/* Reviews Section */
.reviews-section {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    position: relative;
}

.reviews-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(37, 99, 235, 0.2), transparent);
}

.reviews-slider {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    overflow: hidden;
}

.review-card {
    display: none;
    background: white;
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid #e2e8f0;
    text-align: center;
    transition: all 0.3s ease;
}

.review-card.active {
    display: block;
    animation: fadeInUp 0.6s ease-out;
}

.review-content {
    max-width: 600px;
    margin: 0 auto;
}

.stars {
    font-size: 1.2rem;
}

.review-text {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--secondary-color);
    margin-bottom: 2rem;
    font-style: italic;
}

.reviewer-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.reviewer-avatar img {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border: 3px solid var(--primary-color);
}

.reviewer-details {
    text-align: left;
}

.reviewer-name {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.25rem;
}

.reviewer-location {
    color: var(--secondary-color);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.reviewer-badge {
    background: var(--gradient-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* Slider Navigation */
.slider-nav {
    margin-top: 2rem;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: none;
    background: #cbd5e1;
    margin: 0 0.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.slider-dot.active {
    background: var(--primary-color);
    transform: scale(1.2);
}

.slider-dot:hover {
    background: var(--primary-color);
    transform: scale(1.1);
}

/* About Section */
.about-section {
    background: var(--light-color);
}

.stat-item {
    text-align: center;
    padding: 1rem;
}

.stat-item h3 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.tech-stack {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.tech-item {
    display: flex;
    align-items: center;
    padding: 1rem;
    background: var(--light-color);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.tech-item:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.tech-item i {
    font-size: 1.5rem;
    margin-right: 0.75rem;
}

/* Download Section */
.download-section {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.download-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="20" cy="20" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="80" cy="40" r="1" fill="rgba(255,255,255,0.1)"/><circle cx="40" cy="80" r="1.5" fill="rgba(255,255,255,0.1)"/></svg>');
    background-size: 100px 100px;
    opacity: 0.3;
}

.download-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    position: relative;
    z-index: 1;
}

.app-version {
    display: flex;
    align-items: center;
}

/* Footer */
.footer {
    background: var(--dark-color);
    color: white;
}

.footer a {
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: var(--accent-color) !important;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

.hero-content {
    animation: fadeInUp 1s ease-out;
}

.phone-mockup {
    animation: float 3s ease-in-out infinite;
}

.feature-card {
    animation: fadeInUp 0.6s ease-out;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        text-align: center;
        padding: 2rem 0;
        min-height: 100vh;
    }
    
    .hero-content h1 {
        font-size: 2rem;
        line-height: 1.2;
        margin-bottom: 1.5rem;
    }
    
    .hero-content p {
        font-size: 1rem;
        margin-bottom: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
        margin-bottom: 2rem;
    }
    
    .hero-buttons .btn {
        width: 100%;
        margin: 0;
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
    
    .phone-screen {
        width: 260px;
        height: 520px;
        margin-top: 2rem;
    }
    
    .tech-grid {
        grid-template-columns: 1fr;
    }
    
    .download-card .row {
        text-align: center;
    }
    
    .download-card .col-md-6:first-child {
        margin-bottom: 2rem;
    }
    
    .feature-card {
        margin-bottom: 1.5rem;
    }
    
    .navbar {
        padding: 0.5rem 0;
    }
    
    .navbar-brand {
        font-size: 1.2rem;
    }
    
    .display-5 {
        font-size: 2.5rem;
    }
    
    .lead {
        font-size: 1rem;
    }
    
    .review-card {
        padding: 2rem 1.5rem;
    }
    
    .review-text {
        font-size: 1rem;
    }
    
    .reviewer-info {
        flex-direction: column;
        text-align: center;
    }
    
    .reviewer-details {
        text-align: center;
    }
}

@media (max-width: 576px) {
    .hero-section {
        padding: 1rem 0;
    }
    
    .hero-content h1 {
        font-size: 1.75rem;
        margin-bottom: 1rem;
    }
    
    .hero-content p {
        font-size: 0.95rem;
        margin-bottom: 1.5rem;
    }
    
    .hero-buttons .btn {
        padding: 0.75rem 1.25rem;
        font-size: 0.95rem;
    }
    
    .feature-card {
        padding: 1.25rem;
        margin-bottom: 1rem;
    }
    
    .phone-screen {
        width: 220px;
        height: 440px;
        margin-top: 1.5rem;
    }
    
    .features-section {
        padding: 3rem 0;
    }
    
    .about-section {
        padding: 3rem 0;
    }
    
    .download-section {
        padding: 3rem 0;
    }
    
    .download-card {
        padding: 1.5rem;
    }
    
    .tech-stack {
        padding: 1.5rem;
    }
    
    .stat-item h3 {
        font-size: 1.25rem;
    }
    
    .navbar-nav .nav-link {
        padding: 0.75rem 0;
        font-size: 1rem;
    }
    
    .display-5 {
        font-size: 2rem;
    }
    
    .lead {
        font-size: 0.95rem;
    }
    
    .feature-card h4 {
        font-size: 1.1rem;
    }
    
    .feature-card p {
        font-size: 0.9rem;
    }
    
    .review-card {
        padding: 1.5rem 1rem;
    }
    
    .review-text {
        font-size: 0.95rem;
        line-height: 1.6;
    }
    
    .reviewer-avatar img {
        width: 50px;
        height: 50px;
    }
    
    .reviewer-name {
        font-size: 1rem;
    }
    
    .reviewer-location {
        font-size: 0.85rem;
    }
    
    .reviewer-badge {
        font-size: 0.75rem;
        padding: 0.2rem 0.6rem;
    }
    
    .slider-dot {
        width: 10px;
        height: 10px;
        margin: 0 0.3rem;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.5rem;
    }
    
    .hero-content p {
        font-size: 0.9rem;
    }
    
    .hero-buttons .btn {
        padding: 0.7rem 1rem;
        font-size: 0.9rem;
    }
    
    .phone-screen {
        width: 200px;
        height: 400px;
    }
    
    .feature-icon {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }
    
    .feature-card h4 {
        font-size: 1rem;
    }
    
    .feature-card p {
        font-size: 0.85rem;
    }
    
    .display-5 {
        font-size: 1.75rem;
    }
    
    .lead {
        font-size: 0.9rem;
    }
    
    .stat-item h3 {
        font-size: 1.1rem;
    }
    
    .navbar-brand {
        font-size: 1.1rem;
    }
    
    .download-card h4 {
        font-size: 1.1rem;
    }
    
    .download-card p {
        font-size: 0.85rem;
    }
}

/* Touch-friendly improvements */
@media (hover: none) and (pointer: coarse) {
    .btn {
        min-height: 44px;
        padding: 0.75rem 1.5rem;
    }
    
    .nav-link {
        padding: 0.75rem 1rem;
    }
    
    .feature-card {
        cursor: pointer;
    }
    
    .tech-item {
        cursor: pointer;
    }
    
    .hero-buttons .btn {
        min-height: 44px;
        font-size: 1rem;
    }
    
    .download-card .btn {
        min-height: 48px;
        font-size: 1rem;
    }
}

/* Additional mobile optimizations */
@media (max-width: 480px) {
    .hero-content .badge {
        font-size: 0.7rem;
        padding: 0.4rem 0.8rem;
    }
    
    .hero-content .d-flex.align-items-center {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .hero-content .d-flex.align-items-center > div {
        margin: 0;
        font-size: 0.8rem;
    }
    
    .download-card .d-flex.justify-content-center {
        flex-direction: column;
        gap: 1rem;
    }
    
    .download-card .d-flex.justify-content-center > div {
        margin: 0;
    }
    
    .app-content {
        gap: 12px;
    }
    
    .stat-card {
        padding: 12px;
    }
    
    .stat-card h3 {
        font-size: 1.2rem;
    }
    
    .stat-card p {
        font-size: 0.75rem;
    }
    
    .small {
        font-size: 0.75rem;
    }
}

/* Improved loading states */
.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn.loading {
    position: relative;
    color: transparent;
}

.btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}