/* Base Styles & Variables */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #1e293b;
    --text-color: #334155;
    --text-light: #64748b;
    --bg-color: #f8fafc;
    --white: #ffffff;
    --disabled-bg: #cbd5e1;
    --disabled-text: #64748b;
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* Header & Navigation */
header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo img {
    height: 40px;
    width: auto;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--secondary-color);
    font-weight: 700;
}

.nav-btn {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 10px 20px;
    border-radius: 30px;
    font-weight: 600;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

/* Hero Section */
.hero {
    padding: 80px 0;
    background: linear-gradient(135deg, #e0e7ff 0%, #f8fafc 100%);
    overflow: hidden;
}

.hero-container {
    display: flex;
    align-items: center;
    gap: 50px;
}

.hero-content {
    flex: 1;
}

.hero-content h2 {
    font-size: 3rem;
    line-height: 1.2;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 40px;
}

.download-box {
    background: var(--white);
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.download-box h3 {
    margin-bottom: 20px;
    color: var(--secondary-color);
    text-align: center;
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    padding: 15px 20px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    text-align: center;
    transition: var(--transition);
}

.btn i {
    font-size: 1.5rem;
}

.btn small {
    display: block;
    font-size: 0.8rem;
    font-weight: normal;
    opacity: 0.9;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 6px 15px rgba(37, 99, 235, 0.3);
}

.btn-disabled {
    background-color: var(--disabled-bg);
    color: var(--disabled-text);
    cursor: not-allowed;
}

.hero-image {
    flex: 1;
    position: relative;
}

.hero-image img {
    width: 100%;
    border-radius: var(--border-radius);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
    transform: perspective(1000px) rotateY(-5deg);
    transition: var(--transition);
}

.hero-image img:hover {
    transform: perspective(1000px) rotateY(0deg) scale(1.02);
}

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

.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 50px;
    font-size: 1.1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.feature-card {
    text-align: center;
    padding: 40px 20px;
    background: var(--bg-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
}

.feature-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-card h3 {
    color: var(--secondary-color);
    margin-bottom: 15px;
}

/* Gallery Section */
.gallery {
    padding: 80px 0;
    background-color: var(--bg-color);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.gallery-item {
    background: var(--white);
    padding: 15px;
    border-radius: var(--border-radius);
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: var(--transition);
}

.gallery-item:hover {
    transform: scale(1.03);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.gallery-item img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 15px;
    border: 1px solid #e2e8f0;
}

.gallery-item p {
    text-align: center;
    font-weight: 600;
    color: var(--secondary-color);
}

/* Footer */
footer {
    background-color: var(--secondary-color);
    color: var(--white);
    padding-top: 60px;
}

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

.footer-info h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.footer-info p {
    color: #cbd5e1;
    margin-bottom: 10px;
}

.footer-links h4, .footer-social h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--white);
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    color: #cbd5e1;
    transition: var(--transition);
}

.footer-links ul li a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255,255,255,0.1);
    border-radius: 50%;
    color: var(--white);
    transition: var(--transition);
}

.social-icons a:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    background-color: #0f172a;
    text-align: center;
    padding: 20px 0;
    color: #94a3b8;
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero-container {
        flex-direction: column;
        text-align: center;
    }

    .hero-image img {
        transform: none;
    }

    .hero-image img:hover {
        transform: scale(1.02);
    }
}

@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: 1fr;
    }

    .hero-content h2 {
        font-size: 2.2rem;
    }

    .nav-btn span {
        display: none;
    }

    .nav-btn {
        padding: 10px;
        border-radius: 50%;
    }
}