/* Temel Stiller */
:root {
    --primary-color: #00796b;
    --primary-light: #48a999;
    --primary-dark: #004d40;
    --secondary-color: #FF6F00;
    --secondary-light: #ffa040;
    --secondary-dark: #c43e00;
    --text-color: #444;
    --light-text: #fff;
    --light-bg: #f0f7f5;
    --border-radius: 8px;
    --box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --spacing: 30px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', 'Segoe UI', Tahoma, sans-serif;
}

body {
    background-color: #f8f8f8;
    color: var(--text-color);
    line-height: 1.6;
    background-image: linear-gradient(to bottom right, rgba(0, 121, 107, 0.05), rgba(255, 111, 0, 0.05));
    background-attachment: fixed;
    font-family: 'Nunito', sans-serif;
    padding: 0;
    overflow-x: hidden;
}

/* Header */
header {
    background-color: #111;
    padding: 15px 0;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 101;
}

header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color), var(--primary-color));
}

.logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo {
    height: 45px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.05);
}

/* Ana İçerik */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 25px;
}

/* Slider */
.slider-container {
    margin-bottom: 35px;
}

.slider {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    height: 320px;
    box-shadow: var(--box-shadow);
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.6s ease-in-out;
}

.slide.active {
    opacity: 1;
}

.slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.95);
    transition: filter 0.3s ease;
}

.slide:hover img {
    filter: brightness(1.05);
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(255, 255, 255, 0.8);
    border: none;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 10;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: var(--transition);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.slider-btn:hover {
    background-color: var(--secondary-color);
    color: white;
    transform: translateY(-50%) scale(1.1);
}

.prev {
    left: 20px;
}

.next {
    right: 20px;
}

/* İçerik Alanı */
.content {
    background-color: #fff;
    border-radius: var(--border-radius);
    padding: 35px;
    box-shadow: var(--box-shadow);
    border-top: 5px solid var(--primary-color);
    border-bottom: 5px solid var(--secondary-color);
}

.section-title {
    color: var(--primary-dark);
    text-align: center;
    margin-bottom: 30px;
    font-size: 28px;
    font-weight: 700;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.section-subtitle {
    color: var(--primary-dark);
    text-align: center;
    margin: 35px 0 25px;
    font-size: 22px;
    font-weight: 600;
    position: relative;
}

/* QR Kod Butonu */
.buttons-container {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 35px;
    flex-wrap: wrap;
}

.qr-button {
    background: linear-gradient(to right, var(--primary-color), var(--primary-dark));
    color: var(--light-text);
    border: none;
    padding: 14px 28px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    text-decoration: none;
}

.qr-button:hover {
    background: linear-gradient(to right, var(--primary-dark), var(--primary-color));
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.qr-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Video Kategori Grid */
.video-categories {
    margin-top: 20px;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.video-category-item {
    background: #fff;
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.08);
    border: 1px solid #f0f0f0;
    transition: var(--transition);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.video-category-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.12);
    border-color: var(--primary-light);
}

.video-category-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(to bottom right, var(--primary-color), var(--primary-light));
    border-radius: 50%;
    margin: 0 auto 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 22px;
    box-shadow: 0 4px 8px rgba(0, 121, 107, 0.2);
}

.video-category-item h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #333;
}

.video-count {
    display: inline-block;
    padding: 4px 10px;
    background-color: #f5f5f5;
    border-radius: 12px;
    font-size: 13px;
    color: #666;
    margin-bottom: 15px;
}

.category-link {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 8px 0;
    background: #f9f9f9;
    border-radius: 5px;
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 500;
    gap: 5px;
    transition: var(--transition);
}

.category-link:hover {
    background: var(--primary-color);
    color: #fff;
}

.category-link span {
    font-size: 14px;
}

.category-link i {
    font-size: 12px;
    transition: transform 0.3s ease;
}

.category-link:hover i {
    transform: translateX(3px);
}

.categories-button {
    background: linear-gradient(to right, var(--secondary-color), var(--secondary-dark));
    color: var(--light-text);
    border: none;
    padding: 14px 28px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.categories-button:hover {
    background: linear-gradient(to right, var(--secondary-dark), var(--secondary-color));
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.categories-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Sınav Kategorisi */
.exam-category {
    background: linear-gradient(to right, var(--primary-light), var(--primary-color));
    padding: 12px;
    border-radius: var(--border-radius);
    margin-bottom: 25px;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.exam-category::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100%;
    background: linear-gradient(to left, rgba(255, 255, 255, 0.15), transparent);
    transform: skewX(-30deg);
}

.exam-category h2 {
    text-align: center;
    color: var(--light-text);
    font-size: 20px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* Geri Dön Butonu */
.back-button-container {
    margin-bottom: 25px;
}

.back-button {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
    width: fit-content;
    text-decoration: none;
}

.back-button:hover {
    background-color: var(--primary-color);
    color: var(--light-text);
    transform: translateX(-5px);
}

/* Kitap Listesi */
.books-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.book-item {
    display: flex;
    align-items: center;
    background-color: #f9f9f9;
    color: #333;
    padding: 16px;
    border-radius: var(--border-radius);
    transition: var(--transition);
    gap: 15px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    border-left: 4px solid transparent;
    text-decoration: none;
}

.book-item:hover {
    background-color: #ffffff;
    box-shadow: 0 5px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
    border-left: 4px solid var(--primary-color);
}

.book-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(to right, var(--primary-light), transparent);
    transition: var(--transition);
    opacity: 0;
}

.book-item:hover::after {
    opacity: 1;
}

.book-item i.fa-book {
    color: var(--primary-color);
    font-size: 18px;
    transition: var(--transition);
}

.book-item:hover i.fa-book {
    transform: scale(1.2);
}

.book-item span {
    flex: 1;
    font-size: 15px;
    font-weight: 500;
}

.book-item i.fa-chevron-right {
    color: #aaa;
    transition: var(--transition);
}

.book-item:hover i.fa-chevron-right {
    color: var(--secondary-color);
    transform: translateX(3px);
}

.buy-button {
    background: linear-gradient(to right, var(--secondary-color), var(--secondary-light));
    color: var(--light-text);
    border: none;
    padding: 8px 14px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.buy-button:hover {
    background: linear-gradient(to right, var(--secondary-dark), var(--secondary-color));
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

/* Footer */
footer {
    text-align: center;
    padding: 25px;
    color: #666;
    font-size: 14px;
    margin-top: 40px;
    background: linear-gradient(to right, rgba(0, 121, 107, 0.05), rgba(255, 111, 0, 0.05));
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

/* Responsive */
@media (max-width: 992px) {
    .video-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .slider {
        height: 220px;
    }
    
    .content {
        padding: 25px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .qr-button {
        padding: 12px 22px;
        font-size: 15px;
    }
    
    .book-item {
        padding: 14px;
    }
    
    .book-item span {
        font-size: 14px;
    }
    
    .video-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .slider {
        height: 180px;
    }
    
    .slider-btn {
        width: 35px;
        height: 35px;
    }
    
    .content {
        padding: 20px;
    }
    
    .section-title {
        font-size: 22px;
        margin-bottom: 25px;
    }
    
    .qr-button {
        width: 100%;
        justify-content: center;
    }
    
    .book-item span {
        font-size: 13px;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
    }
} 


/* Kategori menüsü stilleri */
.category-nav {
    background-color: #f0f7f5;
    padding: 12px 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    margin-bottom: 20px;
    border-bottom: 1px solid rgba(0, 121, 107, 0.1);
}

.category-nav .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.category-menu {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    list-style: none;
    margin: 0;
    padding: 0;
}

.category-menu li {
    margin: 5px 10px;
}

.category-menu li a {
    display: flex;
    align-items: center;
    color: #333;
    text-decoration: none;
    font-weight: 500;
    padding: 8px 15px;
    border-radius: 5px;
    transition: all 0.3s ease;
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.category-menu li a:hover {
    background-color: var(--primary-color);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 121, 107, 0.2);
}

.category-menu li a i {
    margin-right: 8px;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

.category-menu li a:hover i {
    color: #fff;
}

/* Responsive */
@media (max-width: 768px) {
    .banner-container {
        margin-bottom: 25px;
    }
    
    .info-message {
        padding: 12px 15px;
    }
    
    .info-message p {
        font-size: 14px;
    }
    
    .category-menu {
        flex-direction: column;
        align-items: center;
    }
    
    .category-menu li {
        margin: 5px 0;
        width: 80%;
    }
    
    .category-menu li a {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .info-message {
        padding: 10px;
        margin: 15px 0 20px;
    }
    
    .info-message p {
        font-size: 13px;
    }
    
    .category-nav {
        padding: 10px 0;
    }
    
    .category-menu li {
        width: 90%;
    }
    
    .category-menu li a {
        padding: 8px 10px;
        font-size: 14px;
    }
    
    .category-menu li a i {
        font-size: 14px;
    }
}