/* ==========================
   GLOBAL STYLES
   ========================== */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

/* ==========================
   NAVIGATION
   ========================== */

.navbar {
    background-color: #ffffff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #667eea;
    text-decoration: none;
    transition: color 0.3s;
}

.logo:hover {
    color: #764ba2;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: #667eea;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white !important;
    padding: 0.5rem 1.5rem;
    border-radius: 5px;
    text-decoration: none;
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

/* ==========================
   HERO SECTION (HOME)
   ========================== */

.hero-home {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 6rem 0;
    text-align: center;
}

.hero-home h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 800;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    opacity: 0.95;
}

.hero-description {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto 2rem;
    opacity: 0.9;
}

.hero-stats-home {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 3rem;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* ==========================
   MODULES SECTION
   ========================== */

.modules-section {
    padding: 5rem 0;
    background-color: #ffffff;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
    color: #333;
    font-weight: 700;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 3rem;
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.module-card {
    background: white;
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
}

.module-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.module-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.module-category {
    background-color: #e7f0ff;
    color: #667eea;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.module-version {
    color: #999;
    font-size: 0.85rem;
}

.module-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #333;
}

.module-description {
    color: #666;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.module-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.tag {
    background-color: #f0f0f0;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    color: #555;
}

.module-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid #eee;
}

.module-price {
    font-size: 2rem;
    font-weight: 700;
    color: #667eea;
}

.module-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-secondary {
    background-color: #f0f0f0;
    color: #333;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    text-decoration: none;
    font-size: 0.9rem;
    transition: background-color 0.3s;
}

.btn-secondary:hover {
    background-color: #e0e0e0;
}

/* ==========================
   ABOUT SECTION
   ========================== */

.about-section {
    padding: 5rem 0;
    background-color: #f8f9fa;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    margin-top: 2rem;
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: #333;
}

.about-text p {
    margin-bottom: 1rem;
    color: #666;
    line-height: 1.8;
}

.about-text ul {
    list-style: none;
    margin-top: 1rem;
}

.about-text ul li {
    padding: 0.5rem 0;
    color: #666;
    position: relative;
    padding-left: 1.5rem;
}

.about-text ul li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
}

.about-contact {
    background-color: #ffffff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.about-contact h4 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #333;
}

.about-contact p {
    margin-bottom: 0.8rem;
    color: #666;
}

.about-contact a {
    color: #667eea;
    text-decoration: none;
}

.about-contact a:hover {
    text-decoration: underline;
}

/* ==========================
   FOOTER
   ========================== */

.footer {
    background-color: #2c3e50;
    color: #ecf0f1;
    padding: 3rem 0 1rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-col h4 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.footer-col p {
    color: #bdc3c7;
    line-height: 1.6;
}

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

.footer-col ul li {
    margin-bottom: 0.5rem;
}

.footer-col a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-col a:hover {
    color: #ffffff;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
    color: #bdc3c7;
}

/* ==========================
   LOADING & ERROR STATES
   ========================== */

.loading {
    text-align: center;
    padding: 3rem;
    font-size: 1.2rem;
    color: #666;
}

.error {
    text-align: center;
    padding: 3rem;
    font-size: 1.2rem;
    color: #e74c3c;
}

/* ==========================
   RESPONSIVE DESIGN
   ========================== */

@media (max-width: 768px) {
    .hero-home h1 {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .hero-stats-home {
        gap: 1.5rem;
    }

    .stat-number {
        font-size: 2rem;
    }

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

    .about-content {
        grid-template-columns: 1fr;
    }

    .nav-menu {
        flex-direction: column;
        gap: 1rem;
    }

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