/* Admin Login Styles - Стилі для login.php в стилі admin_dashboard.css */

/* Основні змінні та скид */
:root {
    --primary-color: #1e3c72;
    --primary-light: #2a5298;
    --primary-dark: #0f1f3d;
    --secondary-color: #4a90e2;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #e2e8f0;
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --border-color: #e2e8f0;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    --bg-primary: #1a202c;
    --bg-secondary: #2d3748;
    --bg-tertiary: #4a5568;
    --text-primary: #f7fafc;
    --text-secondary: #e2e8f0;
    --text-muted: #a0aec0;
    --border-color: #4a5568;
}

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

/* Основні стилі для сторінки входу */
.admin-login-page {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
    overflow: hidden;
}

/* Фонові елементи */
.admin-login-page::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
    pointer-events: none;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Контейнер входу */
.login-container {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    max-width: 450px;
    width: 100%;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: slideUp 0.6s ease-out;
}

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

/* Верхня смуга */
.login-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light), var(--secondary-color));
}

/* Заголовок */
.login-header {
    padding: 2rem 2rem 1.5rem 2rem;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
}

.logo {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.logo::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, transparent 70%);
    animation: logoShine 3s ease-in-out infinite;
}

@keyframes logoShine {
    0%, 100% { transform: rotate(0deg); }
    50% { transform: rotate(180deg); }
}

.logo svg {
    width: 40px;
    height: 40px;
    color: white;
    position: relative;
    z-index: 1;
}

.login-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 0.5rem 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.login-title i {
    color: var(--primary-color);
    font-size: 1.5rem;
}

.login-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    margin: 0;
    font-weight: 500;
}

/* Тіло форми */
.login-body {
    padding: 2rem;
}

/* Групи полів */
.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-label {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-label i {
    color: var(--primary-color);
    width: 16px;
    height: 16px;
}

.form-input {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-family: inherit;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--bg-primary);
    box-shadow: 0 0 0 3px rgba(30, 60, 114, 0.1);
    transform: translateY(-1px);
}

.form-input::placeholder {
    color: var(--text-muted);
}

/* Іконки в полях */
.input-icon {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1.125rem;
    pointer-events: none;
}

/* Кнопка входу */
.btn-login {
    width: 100%;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    border: none;
    border-radius: var(--border-radius);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.btn-login::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s ease;
}

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

.btn-login:hover::before {
    left: 100%;
}

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

.btn-login:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* Спиннер завантаження */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #ffffff;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}


/* Алерти */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border: 1px solid;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-danger {
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger-color);
    border-color: rgba(220, 53, 69, 0.2);
}

.alert-success {
    background: rgba(40, 167, 69, 0.1);
    color: var(--success-color);
    border-color: rgba(40, 167, 69, 0.2);
}

.alert i {
    font-size: 1.125rem;
}

/* Responsive дизайн */
@media (max-width: 480px) {
    .login-container {
        margin: 10px;
        max-width: none;
    }
    
    .login-header {
        padding: 1.5rem 1.5rem 1rem 1.5rem;
    }
    
    .login-title {
        font-size: 1.5rem;
    }
    
    .login-body {
        padding: 1.5rem;
    }
    
    .form-input {
        padding: 0.875rem 1rem;
    }
    
    .btn-login {
        padding: 0.875rem 1.25rem;
    }
}

/* Темна тема */
[data-theme="dark"] .login-container {
    background: var(--bg-primary);
    border-color: var(--border-color);
}

[data-theme="dark"] .login-header {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
    border-bottom-color: var(--border-color);
}

[data-theme="dark"] .form-input {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .form-input:focus {
    background: var(--bg-primary);
    border-color: var(--primary-color);
}


/* Додаткові анімації */
.login-container {
    position: relative;
    overflow: hidden;
}

.login-container::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(42, 82, 152, 0.05) 0%, transparent 70%);
    animation: rotate 30s linear infinite;
    pointer-events: none;
}

/* Hover ефекти для інтерактивності */
.form-group:hover .form-label {
    color: var(--primary-color);
}

.form-group:hover .form-label i {
    transform: scale(1.1);
}

/* Фокус стани */
.form-input:focus + .input-icon {
    color: var(--primary-color);
    transform: translateY(-50%) scale(1.1);
}

/* Анімація появи елементів */
.form-group {
    animation: fadeInUp 0.6s ease-out;
    animation-fill-mode: both;
}

.form-group:nth-child(1) { animation-delay: 0.1s; }
.form-group:nth-child(2) { animation-delay: 0.2s; }
.form-group:nth-child(3) { animation-delay: 0.3s; }

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}