/* ===== CSS ПЕРЕМЕННЫЕ ===== */
:root {
    /* Цветовая палитра */
    --color-main: #2c3e50;
    --color-accent: #3498db;
    --color-light: #ecf0f1;
    --color-dark: #34495e;
    --color-text: #2c3e50;
    --color-white: #ffffff;
    --color-background: #667eea;
    --color-success: #27ae60;
    --color-danger: #e74c3c;

    /* Размеры */
    --spacing-sm: 10px;
    --spacing-md: 20px;
    --spacing-lg: 30px;
    
    /* Тени и радиусы */
    --shadow: 0 2px 5px rgba(0,0,0,0.1);
    --shadow-card: 0 5px 20px rgba(0,0,0,0.08);
    --radius: 8px;
    --radius-lg: 12px;
    
    /* Шрифты */
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Темная тема */
[data-theme="dark"] {
    --color-main: #1a1a1a;
    --color-light: #2d2d2d;
    --color-text: #ffffff;
    --color-white: #2d2d2d;
    --color-background: #1a1a1a;
    --color-accent: #667eea;
    --shadow-card: 0 5px 20px rgba(0,0,0,0.3);
}

/* ===== БАЗОВЫЕ СТИЛИ ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--color-text);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    transition: all 0.3s ease;
}

/* ===== БЛОК PAGE ===== */
.page {
    max-width: 1200px;
    margin: 0 auto;
    background: var(--color-white);
    min-height: 100vh;
    box-shadow: 0 0 30px rgba(0,0,0,0.1);
}

/* ===== БЛОК HEADER ===== */
.header {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    color: var(--color-white);
    padding: var(--spacing-lg);
    text-align: center;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header__title {
    font-size: 2rem;
    font-weight: 300;
    letter-spacing: 2px;
}

.theme-toggle {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: var(--color-white);
    padding: var(--spacing-sm);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.2rem;
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.1);
}

/* ===== БЛОК NAV ===== */
.nav {
    background: var(--color-dark);
    padding: var(--spacing-md) 0;
}

.nav__list {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

.nav__link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-white);
    text-decoration: none;
    border-radius: 25px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.nav__link:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-2px);
}

/* Модификатор --active */
.nav__item--active .nav__link {
    background: var(--color-accent);
    font-weight: 600;
}

/* ===== БЛОК MAIN ===== */
.main {
    padding: var(--spacing-lg);
    max-width: 900px;
    margin: 0 auto;
}

/* ===== ОБЩИЕ СТИЛИ ДЛЯ ВСЕХ СТРАНИЦ ===== */
.main h1 {
    font-size: 2.5rem;
    color: var(--color-main);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    font-weight: 300;
    border-bottom: 2px solid var(--color-accent);
    padding-bottom: var(--spacing-md);
}

/* ===== СТИЛИ ДЛЯ СТРАНИЦЫ НОВОСТЕЙ ===== */
.news-item {
    background: var(--color-white);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    border-left: 4px solid var(--color-accent);
    transition: all 0.3s ease;
}

.news-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
}

.news-item h2 {
    color: var(--color-main);
    margin-top: 0;
    border-bottom: 1px solid var(--color-light);
    padding-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.news-item p {
    line-height: 1.7;
    color: #555;
    margin: var(--spacing-sm) 0;
}

.news-item strong {
    color: var(--color-accent);
}

/* ===== СТИЛИ ДЛЯ СТРАНИЦЫ ПРАКТИК ===== */
.practice-item {
    background: var(--color-white);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    border-left: 4px solid var(--color-success);
    transition: all 0.3s ease;
}

.practice-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
}

.practice-item h2 {
    color: var(--color-main);
    margin-top: 0;
    border-bottom: 1px solid var(--color-light);
    padding-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.practice-item p {
    line-height: 1.7;
    color: #555;
    margin: var(--spacing-sm) 0;
}

.practice-item a {
    display: inline-block;
    background: linear-gradient(135deg, var(--color-success) 0%, #2ecc71 100%);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(39, 174, 96, 0.3);
    margin-top: var(--spacing-sm);
}

.practice-item a:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(39, 174, 96, 0.4);
}

/* ===== СТИЛИ ДЛЯ СТРАНИЦЫ КОНТАКТОВ ===== */
.contact-info {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin: var(--spacing-lg) 0;
}

.contact-item {
    background: var(--color-white);
    padding: var(--spacing-lg);
    margin: var(--spacing-md) 0;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    border-left: 4px solid var(--color-accent);
    transition: transform 0.3s ease;
}

.contact-item:hover {
    transform: translateX(5px);
}

.contact-item h3 {
    color: var(--color-main);
    margin-top: 0;
    border-bottom: 1px solid var(--color-light);
    padding-bottom: var(--spacing-sm);
    font-size: 1.3rem;
}

.contact-item p {
    margin: var(--spacing-sm) 0;
    font-size: 1rem;
    line-height: 1.6;
}

.contact-item a {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.contact-item a:hover {
    color: #2980b9;
    text-decoration: underline;
}

.contact-button {
    background: linear-gradient(135deg, var(--color-accent) 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1rem;
    border-radius: 25px;
    cursor: pointer;
    margin-top: var(--spacing-sm);
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.contact-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
    background: linear-gradient(135deg, #764ba2 0%, var(--color-accent) 100%);
}

/* ===== СТИЛИ ДЛЯ МОДАЛЬНОГО ОКНА ===== */
.modal::backdrop {
    background: rgba(0, 0, 0, 0.6);
    animation: fadeIn 0.3s ease;
}

.modal {
    border: none;
    border-radius: var(--radius-lg);
    padding: 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    animation: slideIn 0.3s ease;
    max-width: 500px;
    width: 90vw;
    max-height: 90vh;
    overflow-y: auto;
}

.modal__header {
    background: linear-gradient(135deg, var(--color-main) 0%, var(--color-dark) 100%);
    color: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    margin: 0;
}

.modal__header h2 {
    margin: 0;
    color: white;
    font-size: 1.5rem;
}

.modal__content {
    padding: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    color: var(--color-main);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid #e9ecef;
    border-radius: var(--radius);
    font-size: 1rem;
    transition: border-color 0.3s ease;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.modal__actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
    margin-top: var(--spacing-lg);
}

.btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.3s ease;
    font-weight: 600;
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-accent) 0%, #764ba2 100%);
    color: white;
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn--secondary {
    background: #f8f9fa;
    color: var(--color-main);
    border: 2px solid #e9ecef;
}

.btn--secondary:hover {
    background: #e9ecef;
}

.required {
    color: var(--color-danger);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* ===== БЛОК FOOTER ===== */
.footer {
    background: linear-gradient(135deg, var(--color-main) 0%, var(--color-dark) 100%);
    color: var(--color-white);
    text-align: center;
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

/* ===== АДАПТИВНОСТЬ ===== */
@media (max-width: 768px) {
    .nav__list {
        flex-direction: column;
        gap: var(--spacing-sm);
        padding: 0 var(--spacing-md);
    }
    
    .main {
        padding: var(--spacing-md);
    }
    
    .header {
        flex-direction: column;
        gap: var(--spacing-md);
        padding: var(--spacing-md);
    }
    
    .modal__actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .modal {
        margin: var(--spacing-md);
        width: calc(100vw - 2rem);
    }
}
/* ===== БЛОК PROFILE ===== */
.profile {
    margin-bottom: var(--spacing-lg);
}

.profile__card {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-card);
}

.profile__photo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    border: 3px solid var(--color-accent);
    object-fit: cover;
}

.profile__name {
    font-size: 1.5rem;
    color: var(--color-main);
    margin-bottom: var(--spacing-sm);
}

.profile__group {
    color: var(--color-accent);
    font-size: 1.1rem;
}
/* ===== БЛОК SKILLS ===== */
.skills {
    margin-bottom: var(--spacing-lg);
}

.skills__title {
    color: var(--color-main);
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
}

.skills__list {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* Блок skill с модификаторами */
.skill {
    padding: var(--spacing-md);
    border-radius: var(--radius);
    color: var(--color-white);
    font-weight: bold;
    transition: transform 0.3s;
    min-width: 100px;
    text-align: center;
}

.skill:hover {
    transform: translateY(-3px);
}

.skill--html {
    background: #e34c26;
}

.skill--css {
    background: #264de4;
}

.skill--js {
    background: #f0db4f;
    color: var(--color-text);
}
/* ===== БЛОК PRODUCTS-GRID ===== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

/* ===== БЛОК PRODUCT-CARD ===== */
.product-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--shadow-card);
    transition: all 0.3s ease;
    border: 1px solid var(--color-light);
    display: flex;
    flex-direction: column;
    height: 100%;
}

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

.product-card__image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius);
    margin-bottom: var(--spacing-md);
    border: 2px solid var(--color-light);
}

.product-card__content {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    justify-content: space-between;
}

.product-card__title {
    color: var(--color-main);
    margin: var(--spacing-sm) 0;
    font-size: 1.2rem;
    font-weight: 600;
    line-height: 1.4;
}

.product-card__price {
    color: #e74c3c;
    font-size: 1.3rem;
    font-weight: 600;
    margin: var(--spacing-sm) 0;
}

.product-card__button {
    background: linear-gradient(135deg, var(--color-accent) 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: var(--spacing-md);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.product-card__button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
    background: linear-gradient(135deg, #764ba2 0%, var(--color-accent) 100%);
}

/* Адаптивность для товаров */
@media (max-width: 768px) {
    .products-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: var(--spacing-md);
    }
    
    .product-card {
        padding: var(--spacing-md);
    }
    
    .product-card__image {
        height: 180px;
    }
}