/* Подключение шрифтов */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');
@import url('https://cdnjs.cloudflare.com/ajax/libs/animate.css/4.1.1/animate.min.css');

/* Сброс стилей и переменные */
:root {
    --primary: #8B5CF6;
    --primary-dark: #7C3AED;
    --primary-light: #A78BFA;
    --secondary: #EC4899;
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --dark: #1F2937;
    --gray: #6B7280;
    --light: #F9FAFB;
    --white: #FFFFFF;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

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

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--dark);
    line-height: 1.6;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Красивая анимированная навигация */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(139, 92, 246, 0.2);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: transform 0.3s ease;
}

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

.logo-icon {
    font-size: 2rem;
    -webkit-text-fill-color: initial;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 20px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-links a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: width 0.3s ease;
}

.nav-links a:hover::before,
.nav-links a.active::before {
    width: 80%;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
}

.profile-link {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary);
}

.btn-logout {
    background: linear-gradient(135deg, #ff6b6b, #ee5253);
    color: white !important;
    padding: 8px 20px !important;
    border-radius: 8px !important;
}

.btn-logout:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Мобильное меню */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 3px;
    transition: all 0.3s ease;
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-lg);
        border-bottom: 1px solid rgba(139, 92, 246, 0.2);
    }
    
    .nav-links.active {
        display: flex;
        animation: slideDown 0.3s ease;
    }
}

/* Карточки песен */
.songs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.song-card {
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.song-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--xl);
}

.song-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.song-card:hover::before {
    transform: scaleX(1);
}

.song-cover {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.song-card:hover .song-cover {
    transform: scale(1.1);
}

.song-info {
    padding: 20px;
    background: linear-gradient(to top, var(--white), rgba(255, 255, 255, 0.95));
}

.song-info h3 {
    font-size: 1.25rem;
    margin-bottom: 5px;
    color: var(--dark);
}

.song-info p {
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.song-type {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 10px 0;
}

.song-type.solo {
    background: linear-gradient(135deg, #e3f2fd, #bbdefb);
    color: #1976d2;
}

.song-type.duet {
    background: linear-gradient(135deg, #f3e5f5, #e1bee7);
    color: #7b1fa2;
}

/* Кнопки */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-block {
    display: block;
    width: 100%;
}

/* Формы авторизации */
.auth-container {
    min-height: calc(100vh - 200px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}

.auth-card {
    max-width: 450px;
    width: 100%;
    background: var(--white);
    border-radius: 24px;
    box-shadow: var(--shadow-xl);
    padding: 40px;
    position: relative;
    overflow: hidden;
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-header h2 {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 10px;
}

.auth-header p {
    color: var(--gray);
}

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

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

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark);
}

.label-icon {
    font-size: 1.2rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--light);
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: var(--light);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.1);
}

/* Индикатор силы пароля */
.password-strength {
    height: 4px;
    background: var(--light);
    border-radius: 2px;
    margin-top: 8px;
    overflow: hidden;
}

.strength-bar {
    height: 100%;
    width: 0;
    transition: width 0.3s ease, background 0.3s ease;
}

.password-match {
    display: block;
    margin-top: 5px;
    font-size: 0.85rem;
}

/* Чекбоксы */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--primary);
    border-radius: 4px;
    position: relative;
    transition: all 0.3s ease;
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom {
    background: var(--primary);
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 14px;
}

/* Поле пароля с глазом */
.password-input-wrapper {
    position: relative;
}

.toggle-password {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

/* Социальные кнопки */
.auth-social {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px solid var(--light);
}

.social-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 15px;
}

.social-btn {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-btn.google {
    background: #DB4437;
}

.social-btn.vk {
    background: #4C75A3;
}

.social-btn:hover {
    transform: translateY(-3px) scale(1.1);
    box-shadow: var(--shadow-md);
}

.social-btn img {
    width: 24px;
    height: 24px;
}

/* Уведомления */
.alert {
    padding: 16px 20px;
    border-radius: 12px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.alert.error {
    background: linear-gradient(135deg, #FEE2E2, #FECACA);
    color: #991B1B;
    border-left: 4px solid #DC2626;
}

.alert.success {
    background: linear-gradient(135deg, #D1FAE5, #A7F3D0);
    color: #065F46;
    border-left: 4px solid #059669;
}

.alert-icon {
    font-size: 1.5rem;
}

/* Футер (опционально) */
.footer {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 40px 0;
    margin-top: 60px;
    border-top: 1px solid rgba(139, 92, 246, 0.2);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.footer-section h3 {
    color: var(--dark);
    margin-bottom: 20px;
    font-size: 1.2rem;
}

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

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

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

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

/* Анимации */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes shimmer {
    0% { background-position: -1000px 0; }
    100% { background-position: 1000px 0; }
}

.pulse {
    animation: pulse 2s infinite;
}

.shimmer {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
}