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

:root {
    --primary: #667eea;
    --primary-dark: #764ba2;
    --secondary: #f093fb;
    --text-dark: #1a1a2e;
    --text-light: #e0e0e0;
    --bg-light: #f8f9fa;
    --bg-dark: #0f0f23;
    --border: #e5e7eb;
    --border-dark: #2d2d44;
    --glass: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --success: #10b981;
    --error: #ef4444;
}

@media (prefers-color-scheme: dark) {
    :root {
        --text-dark: #f0f0f0;
        --text-light: #1a1a2e;
        --bg-light: #0f0f23;
        --bg-dark: #1a1a2e;
        --border: #2d2d44;
        --border-dark: #3d3d5c;
    }
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--text-dark);
    background-color: var(--bg-light);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

@media (prefers-color-scheme: dark) {
    body {
        color: var(--text-dark);
        background-color: var(--bg-light);
    }
}

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

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
}

@media (prefers-color-scheme: dark) {
    .header {
        background: rgba(15, 15, 35, 0.95);
        border-bottom-color: var(--border-dark);
    }
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: bold;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav a {
    color: var(--text-dark);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

@media (prefers-color-scheme: dark) {
    .nav a {
        color: var(--text-dark);
    }
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 30px rgba(102, 126, 234, 0.4);
}

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

.btn-secondary:hover {
    background: rgba(102, 126, 234, 0.1);
}

.btn-download {
    background: var(--primary);
    color: white;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 13px;
}

.btn-submit {
    width: 100%;
    padding: 14px 24px;
}

/* Glass Card */
.glass-card {
    background: var(--glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 24px;
    transition: all 0.3s ease;
}

.glass-card:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

@media (prefers-color-scheme: dark) {
    .glass-card {
        background: rgba(255, 255, 255, 0.05);
        border-color: rgba(255, 255, 255, 0.1);
    }

    .glass-card:hover {
        background: rgba(255, 255, 255, 0.08);
        border-color: rgba(255, 255, 255, 0.15);
    }
}

/* Hero Section */
.hero {
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(240, 147, 251, 0.05));
}

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

.hero-content h1 {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 18px;
    color: var(--text-dark);
    margin-bottom: 30px;
    opacity: 0.8;
}

@media (prefers-color-scheme: dark) {
    .hero-content p {
        color: var(--text-dark);
    }
}

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

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

/* Hero Screenshots */
.hero-screenshots {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.screenshot-frame {
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
    transition: transform 0.3s ease, opacity 0.3s ease;
    flex-shrink: 0;
}

.screenshot-frame img {
    display: block;
    width: 100%;
    height: auto;
}

.screenshot-center {
    width: 140px;
    border: 2px solid rgba(255,255,255,0.15);
    z-index: 2;
}

.screenshot-left,
.screenshot-right {
    width: 110px;
    opacity: 0.80;
    border: 2px solid rgba(255,255,255,0.10);
}

.screenshot-left  { transform: rotate(-5deg) translateY(16px); }
.screenshot-right { transform: rotate(5deg)  translateY(16px); }

.screenshot-frame:hover { opacity: 1; z-index: 3; }
.screenshot-left:hover  { transform: rotate(-5deg) translateY(16px) scale(1.04); }
.screenshot-right:hover { transform: rotate(5deg)  translateY(16px) scale(1.04); }
.screenshot-center:hover { transform: scale(1.04); }

@media (max-width: 768px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-content h1 {
        font-size: 36px;
    }

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

    .btn {
        width: 100%;
    }

    .hero-screenshots { gap: 8px; }
    .screenshot-center { width: 130px; }
    .screenshot-left,
    .screenshot-right  { width: 100px; }
}

/* Screenshots Section */
.screenshots-section {
    padding: 100px 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(240, 147, 251, 0.05));
}

.screenshots-section h2 {
    font-size: 44px;
    font-weight: 800;
    text-align: center;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.screenshots-subtitle {
    text-align: center;
    font-size: 16px;
    color: var(--text-dark);
    opacity: 0.6;
    margin-bottom: 60px;
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    max-width: 900px;
    margin: 0 auto;
}

.screenshot-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.screenshot-card img {
    width: 130px;
    height: auto;
    border-radius: 28px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
    border: 2px solid rgba(255,255,255,0.12);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.screenshot-card img:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 32px 70px rgba(102, 126, 234, 0.3);
}

.screenshot-card p {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-dark);
    opacity: 0.7;
    text-align: center;
}

@media (max-width: 768px) {
    .screenshots-section h2 {
        font-size: 32px;
    }

    .screenshots-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }

    .screenshot-card img {
        border-radius: 20px;
    }
}

/* Features Section */
.features {
    padding: 100px 0;
}

.features h2 {
    font-size: 44px;
    font-weight: 800;
    text-align: center;
    margin-bottom: 60px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    background: rgba(102, 126, 234, 0.1);
}

@media (prefers-color-scheme: dark) {
    .feature-card {
        background: rgba(255, 255, 255, 0.05);
        border-color: rgba(255, 255, 255, 0.1);
    }

    .feature-card:hover {
        background: rgba(102, 126, 234, 0.15);
    }
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-dark);
    opacity: 0.7;
    font-size: 15px;
}

@media (prefers-color-scheme: dark) {
    .feature-card h3,
    .feature-card p {
        color: var(--text-dark);
    }
}

/* FAQ Section */
.faq {
    padding: 100px 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(240, 147, 251, 0.05));
}

.faq h2 {
    font-size: 44px;
    font-weight: 800;
    text-align: center;
    margin-bottom: 60px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.faq-grid {
    display: grid;
    gap: 20px;
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: rgba(255, 255, 255, 0.95);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 24px;
    cursor: pointer;
    transition: all 0.3s ease;
}

@media (prefers-color-scheme: dark) {
    .faq-item {
        background: rgba(26, 26, 46, 0.95);
        border-color: var(--border-dark);
    }
}

.faq-item:hover {
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.15);
}

.faq-item summary {
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.faq-item summary::after {
    content: '+';
    font-size: 24px;
    color: var(--primary);
    transition: transform 0.3s ease;
    margin-left: 20px;
    flex-shrink: 0;
}

.faq-item[open] summary::after {
    transform: rotate(45deg);
}

.faq-item summary h3 {
    font-size: 16px;
    color: var(--text-dark);
    flex: 1;
}

@media (prefers-color-scheme: dark) {
    .faq-item summary h3 {
        color: var(--text-dark);
    }
}

.faq-item p {
    margin-top: 16px;
    color: var(--text-dark);
    opacity: 0.8;
    font-size: 15px;
    line-height: 1.7;
}

@media (prefers-color-scheme: dark) {
    .faq-item p {
        color: var(--text-dark);
    }
}

.faq-item p a {
    color: var(--primary);
    text-decoration: none;
}

.faq-item p a:hover {
    text-decoration: underline;
}

/* Contact Section */
.contact {
    padding: 100px 0;
}

.contact h2 {
    font-size: 44px;
    font-weight: 800;
    text-align: center;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.contact .subtitle {
    text-align: center;
    font-size: 16px;
    color: var(--text-dark);
    opacity: 0.7;
    margin-bottom: 40px;
}

@media (prefers-color-scheme: dark) {
    .contact .subtitle {
        color: var(--text-dark);
    }
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 40px;
}

@media (prefers-color-scheme: dark) {
    .contact-form {
        background: rgba(255, 255, 255, 0.05);
        border-color: rgba(255, 255, 255, 0.1);
    }
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-dark);
    font-size: 14px;
}

@media (prefers-color-scheme: dark) {
    .form-group label {
        color: var(--text-dark);
    }
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-dark);
    font-size: 14px;
    font-family: inherit;
    transition: all 0.3s ease;
}

@media (prefers-color-scheme: dark) {
    .form-group input,
    .form-group textarea {
        background: rgba(255, 255, 255, 0.1);
        border-color: rgba(255, 255, 255, 0.2);
        color: var(--text-dark);
    }
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.error-message {
    color: var(--error);
    font-size: 12px;
    margin-top: 4px;
    display: block;
    min-height: 16px;
}

.form-status {
    margin-top: 20px;
    padding: 12px 16px;
    border-radius: 12px;
    text-align: center;
    font-size: 14px;
    min-height: 20px;
}

.form-status.success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border: 1px solid var(--success);
}

.form-status.error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
    border: 1px solid var(--error);
}

/* Footer */
.footer {
    background: var(--bg-dark);
    border-top: 1px solid var(--border);
    color: var(--text-dark);
    padding: 60px 0 20px;
}

@media (prefers-color-scheme: dark) {
    .footer {
        background: var(--bg-dark);
        border-top-color: var(--border-dark);
        color: var(--text-dark);
    }
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-section p {
    color: var(--text-dark);
    opacity: 0.8;
    font-size: 14px;
    line-height: 1.8;
}

@media (prefers-color-scheme: dark) {
    .footer-section p {
        color: var(--text-dark);
    }
}

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

.footer-section ul li {
    margin-bottom: 12px;
}

.footer-section a {
    color: var(--text-dark);
    text-decoration: none;
    font-size: 14px;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

@media (prefers-color-scheme: dark) {
    .footer-section a {
        color: var(--text-dark);
    }
}

.footer-section a:hover {
    opacity: 1;
}

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 20px;
    text-align: center;
    font-size: 13px;
    color: var(--text-dark);
    opacity: 0.6;
}

@media (prefers-color-scheme: dark) {
    .footer-bottom {
        border-top-color: var(--border-dark);
        color: var(--text-dark);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .nav {
        gap: 15px;
    }

    .nav a {
        font-size: 12px;
    }

    .hero-content h1 {
        font-size: 32px;
    }

    .features h2,
    .faq h2,
    .contact h2 {
        font-size: 32px;
    }

    .contact-form {
        padding: 24px;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

section {
    animation: fadeIn 0.6s ease-out;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-light);
}

@media (prefers-color-scheme: dark) {
    ::-webkit-scrollbar-track {
        background: var(--bg-light);
    }
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 5px;
}

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