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

:root {
    --primary-blue: #3498db;
    --light-blue: #5dade2;
    --dark-blue: #2980b9;
    --gray: #95a5a6;
    --light-gray: #ecf0f1;
    --dark-gray: #7f8c8d;
    --black: #2c3e50;
    --white: #ffffff;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--black);
    background-color: var(--white);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Шапка */
header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo h1 {
    color: var(--primary-blue);
    font-size: 1.8rem;
    margin-bottom: 5px;
}

.logo p {
    color: var(--gray);
    font-size: 0.9rem;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    text-decoration: none;
    color: var(--black);
    font-weight: 500;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: var(--primary-blue);
}

/* Герой секция */
.hero {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
    color: var(--white);
    padding: 100px 0;
    text-align: center;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-block;
    background-color: var(--white);
    color: var(--primary-blue);
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: var(--light-gray);
    transform: translateY(-2px);
}

/* Портфолио */
.portfolio {
    padding: 80px 0;
    background-color: var(--light-gray);
}

.portfolio h2 {
    text-align: center;
    margin-bottom: 50px;
    color: var(--black);
    font-size: 2rem;
}

.carousel-container {
    position: relative;
    overflow: hidden;
    max-width: 800px;
    margin: 0 auto;
}

.carousel {
    display: flex;
    transition: transform 0.5s ease;
}

.carousel-item {
    min-width: 100%;
    position: relative;
    text-align: center;
}

.carousel-item img {
    width: 250px;
    height: 250px;
    object-fit: cover;
    border-radius: 10px;
    transition: transform 0.3s;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.carousel-item:hover img {
    transform: scale(1.1);
}

.carousel-caption {
    margin-top: 15px;
}

.carousel-caption h3 {
    color: var(--black);
    font-size: 1.2rem;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(255,255,255,0.7);
    border: none;
    font-size: 24px;
    padding: 10px 15px;
    cursor: pointer;
    border-radius: 50%;
    transition: background-color 0.3s;
}

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

.prev {
    left: 10px;
}

.next {
    right: 10px;
}

/* О нас */
.about {
    padding: 80px 0;
}

.about h2 {
    text-align: center;
    margin-bottom: 50px;
    color: var(--black);
    font-size: 2rem;
}

.about-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
}

.about-text {
    flex: 1;
    min-width: 300px;
    margin-right: 30px;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 1.1rem;
    line-height: 1.8;
}

.about-stats {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    flex: 1;
    min-width: 300px;
}

.stat {
    text-align: center;
    margin: 15px;
}

.stat h3 {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 10px;
}

.stat p {
    color: var(--dark-gray);
}

/* Контакты */
.contact {
    padding: 80px 0;
    background-color: var(--light-gray);
}

.contact h2 {
    text-align: center;
    margin-bottom: 50px;
    color: var(--black);
    font-size: 2rem;
}

.contact-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.contact-info, .contact-form {
    flex: 1;
    min-width: 300px;
    margin: 15px;
}

.contact-info h3, .contact-form h3 {
    margin-bottom: 20px;
    color: var(--primary-blue);
}

.contact-info p {
    margin-bottom: 15px;
}

.contact-form form {
    display: flex;
    flex-direction: column;
}

.contact-form input, .contact-form textarea {
    margin-bottom: 15px;
    padding: 12px;
    border: 1px solid var(--gray);
    border-radius: 5px;
    font-family: inherit;
}

.contact-form button {
    align-self: flex-start;
}

/* Футер */
footer {
    background-color: var(--black);
    color: var(--white);
    padding: 50px 0 20px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 30px;
}

.footer-section {
    flex: 1;
    min-width: 250px;
    margin: 15px;
}

.footer-section h3 {
    margin-bottom: 20px;
    color: var(--primary-blue);
}

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

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

.footer-section ul li a {
    color: var(--light-gray);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: var(--primary-blue);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--dark-gray);
}

/* Админ-панель */
.admin-login {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
}

.login-container {
    background-color: var(--white);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    width: 100%;
    max-width: 400px;
}

.login-container h1 {
    text-align: center;
    margin-bottom: 30px;
    color: var(--black);
}

.admin-header {
    background-color: var(--black);
    color: var(--white);
}

.admin-header h1 {
    color: var(--white);
}

.admin-header nav ul li a {
    color: var(--white);
}

.admin-container {
    padding: 30px 0;
}

.admin-tabs {
    display: flex;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--gray);
}

.tab-btn {
    background: none;
    border: none;
    padding: 12px 20px;
    cursor: pointer;
    font-size: 1rem;
    color: var(--dark-gray);
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
}

.tab-btn.active {
    color: var(--primary-blue);
    border-bottom-color: var(--primary-blue);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.message {
    background-color: #d4edda;
    color: #155724;
    padding: 12px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.error {
    background-color: #f8d7da;
    color: #721c24;
    padding: 12px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.article-form, .articles-list {
    background-color: var(--white);
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: var(--black);
}

.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--gray);
    border-radius: 5px;
    font-family: inherit;
}

.form-group small {
    color: var(--dark-gray);
    font-size: 0.8rem;
}

.articles-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.articles-table th, .articles-table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--light-gray);
}

.articles-table th {
    background-color: var(--light-gray);
    color: var(--black);
}

.actions {
    display: flex;
    gap: 10px;
}

.btn-small {
    padding: 6px 12px;
    font-size: 0.8rem;
}

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

.btn-danger {
    background-color: #e74c3c;
    color: var(--white);
}

.btn-secondary:hover {
    background-color: var(--dark-gray);
}

.btn-danger:hover {
    background-color: #c0392b;
}

.inline-form {
    display: inline;
}

.pagination {
    display: flex;
    justify-content: center;
    margin-top: 30px;
}

.page-link {
    padding: 8px 15px;
    margin: 0 5px;
    border: 1px solid var(--gray);
    border-radius: 5px;
    text-decoration: none;
    color: var(--black);
    transition: all 0.3s;
}

.page-link:hover, .page-link.active {
    background-color: var(--primary-blue);
    color: var(--white);
    border-color: var(--primary-blue);
}

/* Адаптивность */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        text-align: center;
    }
    
    nav ul {
        margin-top: 15px;
        justify-content: center;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .about-content, .contact-content, .footer-content {
        flex-direction: column;
    }
    
    .about-text {
        margin-right: 0;
        margin-bottom: 30px;
    }
    
    .carousel-item img {
        width: 200px;
        height: 200px;
    }
    
    .admin-tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        text-align: left;
    }
    
    .actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 60px 0;
    }
    
    .hero h2 {
        font-size: 1.8rem;
    }
    
    .portfolio, .about, .contact {
        padding: 50px 0;
    }
    
    .carousel-item img {
        width: 150px;
        height: 150px;
    }
    
    .articles-table {
        font-size: 0.8rem;
    }
    
    .articles-table th, .articles-table td {
        padding: 8px 10px;
    }
}