/* ==================== ROOT & VARIABLES ==================== */
:root {
    --primary-color: #ff6b35;
    --secondary-color: #f7931e;
    --accent-color: #4ecdc4;
    --dark-color: #1a1a2e;
    --light-color: #f5f5f5;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --gradient-primary: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    --gradient-accent: linear-gradient(135deg, #4ecdc4 0%, #44a08d 100%);
    --transition: all 0.3s ease;
}

/* ==================== GLOBAL STYLES ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--text-dark);
    background-color: #ffffff;
    line-height: 1.6;
}

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

/* ==================== NAVBAR ==================== */
.navbar {
    background: var(--dark-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: bold;
}

.logo-img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.logo-text {
    color: var(--secondary-color);
    font-weight: 800;
}

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

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

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

.language-selector {
    display: flex;
    gap: 8px;
}

.lang-btn {
    background: transparent;
    border: 2px solid var(--text-light);
    color: white;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    font-size: 0.85rem;
}

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

.lang-btn.active {
    background: var(--secondary-color);
    border-color: var(--secondary-color);
    color: white;
}

/* ==================== HERO SECTION ==================== */
.hero {
    background: var(--gradient-primary);
    padding: 80px 20px;
    min-height: 600px;
    display: flex;
    align-items: center;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    width: 100%;
}

.hero-text {
    color: white;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 40px;
    opacity: 0.95;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    text-align: center;
    justify-content: center;
}

.btn-primary {
    background: white;
    color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid white;
}

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

.btn-large {
    padding: 18px 48px;
    font-size: 1.2rem;
    background: var(--gradient-accent);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-large:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.3);
}

.btn-icon {
    font-size: 1.3rem;
}

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

.hero-img {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.2));
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* ==================== FEATURES SECTION ==================== */
.features {
    padding: 100px 20px;
    background: var(--light-color);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 60px;
    color: var(--text-dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    border-top: 4px solid var(--secondary-color);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
}

.feature-name {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--text-dark);
    font-weight: 700;
}

.feature-desc {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ==================== ABOUT SECTION ==================== */
.about {
    padding: 100px 20px;
    background: white;
}

.about-text {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.1rem;
    line-height: 1.8;
    text-align: center;
    color: var(--text-dark);
}

/* ==================== DOWNLOAD SECTION ==================== */
.download {
    background: var(--gradient-accent);
    padding: 100px 20px;
    text-align: center;
    color: white;
}

.download-text {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.95;
}

/* ==================== FOOTER ==================== */
.footer {
    background: var(--dark-color);
    color: white;
    padding: 60px 20px 30px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: var(--secondary-color);
}

.footer-section p {
    color: var(--text-light);
    line-height: 1.6;
}

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

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

.footer-section a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--secondary-color);
}

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

.social-link {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-light);
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .hero-subtitle {
        font-size: 1rem;
    }

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

    .nav-links {
        gap: 15px;
    }

    .cta-buttons {
        justify-content: flex-start;
    }

    .hero-image {
        display: none;
    }

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

@media (max-width: 480px) {
    .nav-links {
        gap: 10px;
        flex-direction: column;
        align-items: flex-start;
    }

    .hero {
        padding: 50px 20px;
        min-height: auto;
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }

    .section-title {
        font-size: 1.5rem;
    }
}