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

body {
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.5;
    max-width: 1400px;
    margin: 0 auto;
    padding: 16px;
    scroll-behavior: smooth;
    padding-top: 100px;
}

/* Header - фиксированный */
header {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    color: #1a2a3a;
    padding: 16px 24px;
    border-radius: 20px;
    margin-bottom: 24px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    position: fixed;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 32px);
    max-width: 1368px;
    z-index: 1000;
    transition: all 0.3s ease;
    border: 1px solid rgba(0,0,0,0.05);
}

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

.header-info {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.header-info img {
    max-width: 400px;
    width: 100%;
    height: auto;
    min-width: 200px;
}

/* Навигация */
.header-nav {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.nav-button {
    background-color: #fc4c00;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 40px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    white-space: nowrap;
    text-align: center;
}

.nav-button i {
    font-size: 1rem;
    font-style: normal;
}

.nav-button:hover {
    background-color:#fc4c00 ;
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(252, 76, 0, 0.3);
}

/* Секции */
.section {
    background-color: white;
    padding: 28px 24px;
    border-radius: 24px;
    margin-bottom: 24px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    scroll-margin-top: 100px;
    transition: box-shadow 0.2s;
}

.section:hover {
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
}

h2 {
    font-size: 1.8rem;
    margin: 0 0 20px 0;
    color: #1a2a3a;
    border-left: 5px solid #3498db;
    padding-left: 15px;
    display: flex;
    align-items: center;
    gap: 12px;
}

h2 i {
    color: #3498db;
    font-size: 1.6rem;
}

h3 {
    font-size: 1.1rem;
    margin: 15px 0;
    color: #495057;
    line-height: 1.6;
    font-weight: 500;
}

h4 {
    color: #6c757d;
    margin: 10px 0;
    font-size: 1rem;
}

/* Контактная карточка */
.contact-card {
    background: linear-gradient(135deg, #e8f0fe 0%, #d4e4f7 100%);
    padding: 24px;
    border-radius: 20px;
    margin: 20px 0;
    transition: transform 0.2s;
}

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

.contact-card h4 {
    color: #1a2a3a;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}

.contact-card i {
    color: #00acfc;
    width: 28px;
    font-size: 1.2rem;
}

.contact-card p {
    color: #2c3e50;
    margin-left: 38px;
    font-weight: 500;
}

.contact-card strong {
    color: #1a2a3a;
}

.divider {
    height: 3px;
    background: linear-gradient(90deg, #3498db, #2ecc71, transparent);
    margin: 20px 0;
    border-radius: 3px;
}

/* Портфолио */
.portfolio {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 25px;
    margin-top: 20px;
}

/* Карточка-ссылка */
a.portfolio-item {
    text-decoration: none;
    color: inherit;
    display: block;
    background-color: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    border: 1px solid #eef2f7;
}

a.portfolio-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 35px rgba(0,0,0,0.12);
}

.portfolio-info {
    padding: 20px;
}

.portfolio-info h4 {
    color: #1a2a3a;
    margin-bottom: 10px;
    font-size: 1.2rem;
    font-weight: 700;
}

.portfolio-info p {
    color: #6c757d;
    font-size: 0.9rem;
    margin-bottom: 15px;
    line-height: 1.5;
}

/* Индикатор перехода */
.portfolio-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #3498db;
    font-weight: 600;
    transition: gap 0.2s;
}

a.portfolio-item:hover .portfolio-link {
    gap: 12px;
}

/* Форма */
.form-description {
    color: #6c757d;
    margin-bottom: 25px;
    font-size: 0.95rem;
}

.contact-form {
    max-width: 100%;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 22px;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
    font-weight: 600;
    color: #1a2a3a;
}

.form-group label i {
    color: #3498db;
    width: 22px;
    font-size: 1.1rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e9ecef;
    border-radius: 14px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background-color: #fff;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: #3498db;
    outline: none;
    box-shadow: 0 0 0 4px rgba(52, 152, 219, 0.15);
}

.form-group textarea {
    min-height: 110px;
    resize: vertical;
}

.submit-btn {
    background: linear-gradient(135deg, #1a2a3a 0%, #2c3e50 100%);
    color: white;
    border: none;
    padding: 15px 28px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    width: 100%;
    margin-top: 10px;
}

.submit-btn:hover {
    background: linear-gradient(135deg, #3498db, #2980b9);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(52,152,219,0.3);
}

/* Блок контактов */
.contacts {
    background: white;
    color: #333;
    padding: 28px 24px;
    border-radius: 24px;
    margin-top: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    transition: box-shadow 0.2s;
}

.contacts:hover {
    box-shadow: 0 8px 30px rgba(0,0,0,0.1);
}

.contacts h2 {
    color: #1a2a3a;
    border-left-color: #3498db;
}

.contacts h2 i {
    color: #3498db;
}

.contact-info {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 20px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    flex: 1;
    min-width: 220px;
    background: linear-gradient(135deg, #e8f0fe 0%, #d4e4f7 100%);
    padding: 16px 20px;
    border-radius: 18px;
    transition: all 0.2s;
    text-decoration: none;
    color: inherit;
}

.contact-item:hover {
    transform: translateY(-3px);
    background: linear-gradient(135deg, #d4e4f7 0%, #bdd6f0 100%);
}

.contact-icon {
    font-size: 1.8rem;
    color: #fc4c00;
}

.contact-item h4 {
    color: #1a2a3a;
    margin-bottom: 5px;
    font-size: 0.9rem;
}

.contact-item p {
    color: #2c3e50;
    font-size: 0.95rem;
}

.contact-item small {
    color: #6c757d;
    font-size: 0.75rem;
}

footer {
    text-align: center;
    margin-top: 32px;
    padding: 20px;
    color: #7f8c8d;
    font-size: 0.85rem;
    border-top: 1px solid #dee2e6;
}

/* Кнопка наверх */
.back-to-top {
    position: fixed;
    bottom: 25px;
    right: 25px;
    background: linear-gradient(135deg, #1a2a3a, #2c3e50);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    z-index: 1001;
    opacity: 0.7;
}

.back-to-top:hover {
    background: linear-gradient(135deg, #fc4c00, #e04400);
    transform: translateY(-5px);
    opacity: 1;
}

/* Анимация появления секций */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section {
    animation: fadeInUp 0.5s ease-out;
}

/* ========== ПЛАНШЕТЫ (768px - 992px) ========== */
@media (max-width: 992px) {
    body {
        padding: 12px;
        padding-top: 95px;
    }
    
    header {
        width: calc(100% - 24px);
        padding: 12px 20px;
    }
    
    .portfolio {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: 20px;
    }
    
    h2 {
        font-size: 1.5rem;
    }
}

/* ========== МОБИЛЬНЫЕ (до 768px) ========== */
@media (max-width: 768px) {
    body {
        padding: 10px;
        padding-top: 85px;
    }

    header {
        padding: 12px 16px;
        top: 8px;
        width: calc(100% - 20px);
    }

    .header-container {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
        gap: 12px;
    }

    .header-info {
        justify-content: center;
        flex-direction: column;
        gap: 8px;
    }
    
    .header-info img {
        max-width: 280px;
        width: 100%;
        min-width: 180px;
        margin: 0 auto;
    }

    .header-nav {
        justify-content: center;
        gap: 8px;
    }

    .nav-button {
        padding: 7px 12px;
        font-size: 0.7rem;
    }
    
    .nav-button i {
        font-size: 0.8rem;
    }

    h2 {
        font-size: 1.3rem;
        padding-left: 12px;
    }
    
    h2 i {
        font-size: 1.2rem;
    }

    h3 {
        font-size: 0.95rem;
    }

    .section {
        padding: 18px 16px;
        border-radius: 18px;
        scroll-margin-top: 85px;
    }

    .contact-card {
        padding: 16px;
    }
    
    .contact-card h4 {
        font-size: 0.9rem;
    }
    
    .contact-card p {
        margin-left: 34px;
        font-size: 0.85rem;
    }

    .portfolio {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .portfolio-info {
        padding: 14px;
    }
    
    .portfolio-info h4 {
        font-size: 1rem;
    }
    
    .portfolio-info p {
        font-size: 0.85rem;
    }

    .contact-info {
        flex-direction: column;
        gap: 10px;
    }

    .contact-item {
        min-width: auto;
        padding: 12px 16px;
    }
    
    .contact-icon {
        font-size: 1.4rem;
    }
    
    .contact-item p {
        font-size: 0.85rem;
    }

    .submit-btn {
        padding: 12px 20px;
        font-size: 0.9rem;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 10px 14px;
        font-size: 16px;
    }
    
    .form-group label {
        font-size: 0.9rem;
    }

    .back-to-top {
        width: 42px;
        height: 42px;
        bottom: 15px;
        right: 15px;
    }
    
    .back-to-top i {
        font-size: 1rem;
    }
    
    footer {
        font-size: 0.7rem;
        padding: 15px;
    }
}

/* ========== ОЧЕНЬ МАЛЕНЬКИЕ ЭКРАНЫ (до 480px) ========== */
@media (max-width: 480px) {
    body {
        padding-top: 75px;
    }
    
    header {
        padding: 10px 12px;
    }
    
    .header-nav {
        gap: 6px;
    }

    .nav-button {
        padding: 5px 8px;
        font-size: 0.65rem;
        gap: 4px;
    }
    
    .nav-button i {
        font-size: 0.7rem;
    }

    h2 {
        font-size: 1.2rem;
    }

    .section {
        scroll-margin-top: 75px;
        padding: 14px 12px;
    }
    
    .contact-card {
        padding: 12px;
    }
    
    .contact-card p {
        margin-left: 28px;
        font-size: 0.8rem;
    }
    
    .contact-card h4 {
        font-size: 0.85rem;
    }
    
    .contact-card i {
        width: 22px;
        font-size: 1rem;
    }
    
    .header-info img {
        max-width: 220px;
        width: 100%;
        min-width: 150px;
        margin: 0 auto;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 8px 12px;
    }
    
    .contacts {
        padding: 18px 16px;
    }
    
    .contact-item {
        padding: 10px 14px;
        gap: 12px;
    }
}

/* ========== БОЛЬШИЕ ЭКРАНЫ (от 1400px) ========== */
@media (min-width: 1400px) {
    body {
        padding: 20px;
        padding-top: 110px;
    }
    
    header {
        max-width: 1360px;
        padding: 20px 32px;
    }
    
    .section {
        padding: 32px 28px;
    }
    
    .portfolio {
        grid-template-columns: repeat(3, 1fr);
        gap: 30px;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    h3 {
        font-size: 1.2rem;
    }
}

/* ========== ТАЧ-УСТРОЙСТВА ========== */
@media (hover: none) {
    .nav-button:active,
    .submit-btn:active,
    .portfolio-link:active,
    .contact-item:active {
        opacity: 0.7;
        transform: scale(0.98);
    }
}