:root {
    --primary-color: #2c3e50;
    --accent-color: #e67e22;
    --bg-color: #f9fbfd;
    --text-color: #333;
    --light-text: #ecf0f1;
    --section-bg: #ffffff;
    --footer-bg: #2c3e50;
    --font-heading: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --transition-speed: 0.3s;
}

[data-theme="dark"] {
    --primary-color: #ecf0f1;
    --accent-color: #e67e22;
    --bg-color: #1a1a1a;
    --text-color: #ecf0f1;
    --light-text: #bdc3c7;
    --section-bg: #2c2c2c;
    --footer-bg: #000000;
}

body {
    font-family: var(--font-body);
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

[data-theme="dark"] header {
    background: rgba(44, 44, 44, 0.95);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--primary-color);
    font-size: 24px;
    font-weight: bold;
}

.logo img {
    height: 40px;
    margin-right: 10px;
    border-radius: 8px;
}

.nav-links a {
    margin-left: 20px;
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color var(--transition-speed);
}

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

/* Hero Section */
.hero {
    padding: 80px 0;
    text-align: center;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    position: relative;
    overflow: hidden;
}

[data-theme="dark"] .hero {
    background: linear-gradient(135deg, #2c3e50 0%, #000000 100%);
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    animation: fadeInDown 0.8s ease-out;
}

.hero p {
    font-size: 20px;
    max-width: 600px;
    margin: 0 auto 40px;
    opacity: 0.9;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.cta-button {
    display: inline-block;
    padding: 15px 40px;
    background-color: var(--accent-color);
    color: white;
    text-decoration: none;
    border-radius: 30px;
    font-size: 18px;
    font-weight: bold;
    box-shadow: 0 4px 15px rgba(230, 126, 34, 0.4);
    transition: transform 0.2s, box-shadow 0.2s;
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(230, 126, 34, 0.6);
}

.hero-image {
    margin-top: 50px;
    max-width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
    animation: zoomIn 1s ease-out 0.6s backwards;
}

/* Features Section */
.features-section {
    padding: 80px 0;
    background-color: var(--section-bg);
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: var(--primary-color);
}

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

.feature-card {
    text-align: center;
    padding: 30px;
    border-radius: 15px;
    background: var(--bg-color);
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
}

.feature-icon {
    font-size: 40px;
    margin-bottom: 20px;
    display: block;
}

/* Screenshots Gallery */
.gallery-section {
    padding: 80px 0;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.gallery-grid img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.gallery-grid img:hover {
    transform: scale(1.05);
}

/* Footer */
footer {
    background-color: var(--footer-bg);
    color: var(--light-text);
    padding: 40px 0;
    text-align: center;
}

footer a {
    color: var(--light-text);
    text-decoration: none;
    margin: 0 10px;
    opacity: 0.8;
    transition: opacity 0.2s;
}

footer a:hover {
    opacity: 1;
}

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

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes zoomIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 36px; }
    .hero p { font-size: 16px; }
    .nav-links { display: none; } /* Simplified mobile nav for now */
}