/* 
 * CSS Styles for Corsi Download - Light Theme
 * Author: Your Name
 */

/* === VARIABLES === */
:root {
    --primary-color: #9c27b0;
    --secondary-color: #607d8b;
    --accent-color: #00bcd4;
    --text-color: #333333;
    --bg-color: #f8f9fa;
    --header-bg: #ffffff;
    --footer-bg: #343a40;
    --footer-text: #ffffff;
    --card-bg: #ffffff;
    --card-shadow: 0 4px 8px rgba(0,0,0,0.1);
    --font-family: 'Poppins', sans-serif;
    --container-width: 1200px;
    --border-radius: 8px;
}

/* === GENERAL STYLES === */
* {
    box-sizing: border-box;
}

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1rem;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s;
}

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

img {
    max-width: 100%;
    height: auto;
}

/* === HEADER === */
.header {
    background-color: var(--header-bg);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo img {
    height: 50px;
}

.telegram-header-button {
    background: linear-gradient(45deg, #0088cc, #00a8ff);
    color: #fff !important;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    font-weight: bold;
    transition: all 0.3s ease;
    font-size: 1.1rem;
    text-decoration: none !important;
    border: 2px solid #0088cc;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
    box-shadow: 0 4px 15px rgba(0,136,204,0.3);
}

.telegram-header-button:hover {
    background: linear-gradient(45deg, #006699, #0088cc);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,136,204,0.4);
    border-color: #006699;
}

/* === HERO SECTION === */
.hero {
    text-align: center;
    padding: 4rem 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
}

.hero-title {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    color: #ffffff;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

/* === SEARCH FORM === */
.search-form {
    display: flex;
    justify-content: center;
}

.search-bar {
    width: 100%;
    max-width: 500px;
    padding: 0.8rem 1rem;
    border-radius: var(--border-radius);
    border: 1px solid #ddd;
    background-color: #ffffff;
    color: var(--text-color);
    font-size: 1rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* === CATEGORY NAVIGATION === */
.category-section {
    text-align: center;
    padding: 2rem 1rem;
    background-color: #ffffff;
    margin: 1rem 0;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
}

.category-tag {
    display: inline-block;
    background-color: var(--secondary-color);
    color: #fff;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    margin: 0.5rem;
    transition: background-color 0.3s;
}

.category-tag:hover {
    background-color: var(--primary-color);
}

/* === COURSE GRID === */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    padding: 2rem 0;
}

.card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
    border: 1px solid #e9ecef;
    overflow: hidden;
    transition: transform 0.3s, border-color 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    font-size: 1.2rem;
    margin-top: 0;
    color: var(--primary-color);
}

.card-text {
    color: #666666;
}

/* === SINGLE COURSE PAGE === */
.single-course .course-header {
    text-align: center;
    padding: 2rem 0;
    background-color: #ffffff;
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
    box-shadow: var(--card-shadow);
}

.single-course .course-title {
    font-size: 2.5rem;
    color: var(--primary-color);
}

.single-course .course-author {
    font-style: italic;
    color: var(--secondary-color);
}

.single-course .course-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-top: 2rem;
}

@media (min-width: 768px) {
    .single-course .course-content {
        flex-direction: row;
    }
}

.single-course .course-cover {
    flex-basis: 30%;
}

.single-course .course-details {
    flex-basis: 70%;
    background-color: #ffffff;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
}

.download-button, .telegram-single-button {
    display: block;
    color: #fff !important;
    padding: 1.5rem 2.5rem;
    border-radius: 50px;
    font-weight: bold;
    text-align: center;
    margin: 2rem auto;
    font-size: 1.6rem;
    transition: all 0.3s ease;
    text-decoration: none !important;
    border: none;
    max-width: 400px;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.7);
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
}

.download-button {
    background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
    border: 3px solid var(--primary-color);
}

.telegram-single-button {
    background: linear-gradient(45deg, #0088cc, #00a8ff);
    border: 3px solid #0088cc;
}

.download-button:hover, .telegram-single-button:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 12px 35px rgba(0,0,0,0.5);
    filter: brightness(1.1);
}

.download-button:hover {
    border-color: var(--accent-color);
}

.telegram-single-button:hover {
    border-color: #00a8ff;
}

/* === PAGINATION === */
.pagination {
    text-align: center;
    padding: 2rem 0;
}

.pagination a {
    padding: 0.5rem 1rem;
    margin: 0 0.2rem;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    color: var(--text-color);
    background-color: #ffffff;
}

.pagination a.active {
    background-color: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

/* === FOOTER === */
.footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    text-align: center;
    padding: 2rem 0;
    margin-top: 2rem;
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .header .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .telegram-header-button {
        padding: 0.6rem 1.2rem;
        font-size: 1rem;
    }
    
    .single-course .course-title {
        font-size: 1.8rem;
    }
    
    .download-button, .telegram-single-button {
        padding: 1.2rem 2rem;
        font-size: 1.3rem;
        margin: 1.5rem auto;
    }
    
    .container {
        padding: 0 0.5rem;
    }
    
    .card-body {
        padding: 1rem;
    }
    
    .category-section {
        padding: 1rem;
    }
    
    .category-tag {
        margin: 0.3rem;
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 2rem 0.5rem;
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .search-bar {
        font-size: 0.9rem;
        padding: 0.6rem 0.8rem;
    }
    
    .download-button, .telegram-single-button {
        padding: 1rem 1.5rem;
        font-size: 1.1rem;
        border-radius: 25px;
    }
    
    .logo img {
        height: 40px;
    }
    
    .pagination a {
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 320px) {
    .hero-title {
        font-size: 1.3rem;
    }
    
    .download-button, .telegram-single-button {
        padding: 0.8rem 1.2rem;
        font-size: 1rem;
    }
    
    .container {
        padding: 0 0.3rem;
    }
}