/* === ОСНОВНЫЕ СТИЛИ === */
:root {
    --bg-primary: #0a192f;
    --bg-secondary: #112240;
    --bg-card: #1a2a44;
    --bg-hover: #233554;
    --border-color: #2d4263;
    --text-primary: #e6f1ff;
    --text-secondary: #a8b2d1;
    --text-muted: #8892b0;
    --accent-blue: #64ffda;
    --accent-purple: #7b4dff;
    --accent-green: #00d26a;
    --accent-red: #ff4d6d;
    --accent-yellow: #ffd166;
    --accent-orange: #ff9e64;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===== ХЕДЕР ===== */
.main-header {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-card));
    border-bottom: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.theme-toggle i {
    font-size: 16px;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
}

.logo:hover {
    color: var(--accent-blue);
    transform: translateY(-1px);
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.back-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 10px;
    font-weight: 500;
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    white-space: nowrap;
    height: 44px;
}

.back-btn:hover {
    background: var(--bg-hover);
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    transform: translateY(-2px);
}

.back-btn:active {
    transform: translateY(0);
}

/* ===== ОСНОВНОЙ КОНТЕНТ ===== */
.main-container {
    max-width: 1400px;
    margin: 90px auto 40px;
    padding: 0 2rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-align: center;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    text-align: center;
}

/* === КАРТОЧКИ ПОДДЕРЖКИ === */
.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.support-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.support-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-blue);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.card-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.card-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
    text-align: center;
}

/* === ФОРМА ПОДДЕРЖКИ === */
.support-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-label {
    font-weight: 500;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-label .required {
    color: var(--accent-red);
    font-size: 0.9em;
}

.form-input, .form-textarea, .form-select {
    padding: 12px 16px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    transition: var(--transition);
}

.form-textarea {
    resize: vertical;
    min-height: 150px;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(100, 255, 218, 0.1);
}

/* === ЗАГРУЗКА ФАЙЛОВ === */
.file-upload {
    border: 2px dashed var(--border-color);
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.file-upload:hover {
    border-color: var(--accent-blue);
    background: rgba(100, 255, 218, 0.05);
}

.file-upload input {
    display: none;
}

.upload-icon {
    font-size: 3rem;
    color: var(--accent-blue);
    margin-bottom: 1rem;
}

.upload-text {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.upload-hint {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.file-list {
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.file-name {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
}

.remove-file {
    background: none;
    border: none;
    color: var(--accent-red);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: var(--transition);
}

.remove-file:hover {
    background: rgba(255, 77, 109, 0.1);
}

/* === КНОПКА ОТПРАВКИ === */
.submit-btn {
    padding: 14px 24px;
    border: none;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    color: var(--bg-primary);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    margin: 1rem auto 0;
    display: block;
    min-width: 200px;
}

.submit-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* === УВЕДОМЛЕНИЯ === */
.notification {
    position: fixed;
    top: 100px;
    right: 20px;
    padding: 15px 20px;
    border-radius: 10px;
    color: white;
    font-weight: 500;
    z-index: 10000;
    display: flex;
    align-items: center;
    gap: 10px;
    max-width: 400px;
    animation: slideIn 0.3s ease-out;
    box-shadow: var(--shadow-lg);
}

.notification.success {
    background: linear-gradient(135deg, var(--accent-green), #00b359);
    border-left: 4px solid var(--accent-green);
}

.notification.error {
    background: linear-gradient(135deg, var(--accent-red), #cc3a57);
    border-left: 4px solid var(--accent-red);
}

.notification.warning {
    background: linear-gradient(135deg, var(--accent-yellow), #e6b800);
    border-left: 4px solid var(--accent-yellow);
    color: var(--bg-primary);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* === ФУТЕР === */
.main-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 1.5rem 0;
    margin-top: 4rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.footer-text {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-align: center;
}

/* === АДАПТИВНОСТЬ === */
@media (max-width: 768px) {
    .header-content {
        padding: 0 1rem;
        height: 60px;
    }
    
    .main-container {
        margin-top: 80px;
        padding: 0 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .support-grid {
        grid-template-columns: 1fr;
    }
    
    .notification {
        top: 80px;
        right: 10px;
        left: 10px;
        max-width: none;
    }
    
    .file-upload {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: 0 0.8rem;
    }
    
    .logo {
        font-size: 1.2rem;
    }
    
    .logo-icon {
        width: 30px;
        height: 30px;
    }
}