/**
 * Login Screen Styles - Modern Design
 */

.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: var(--spacing-md);
    position: relative;
    overflow: hidden;
}

/* Decorative background elements */
.login-container::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
    animation: pulse 15s ease-in-out infinite;
}

.login-container::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(to top, rgba(0,0,0,0.1), transparent);
}

@keyframes pulse {
    0%, 100% { transform: scale(1) rotate(0deg); }
    50% { transform: scale(1.1) rotate(5deg); }
}

.login-card {
    background: rgba(255, 255, 255, 0.95);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    box-shadow:
        0 25px 50px -12px rgba(0, 0, 0, 0.25),
        0 0 0 1px rgba(255, 255, 255, 0.2);
    padding: 48px 40px;
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 1;
    animation: slideUp 0.5s ease-out;
}

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

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-header .login-logo {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.login-header .login-logo svg {
    width: 40px;
    height: 40px;
    color: white;
}

.login-header svg {
    color: #667eea;
    margin-bottom: var(--spacing-md);
}

.login-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: #1a1a2e;
    margin: 0 0 8px 0;
    letter-spacing: -0.5px;
}

.login-header p {
    color: #6b7280;
    font-size: 0.95rem;
    margin: 0;
}

.login-form .form-group {
    margin-bottom: 24px;
}

.login-form label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: #374151;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.login-form input {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    background: #f9fafb;
    color: #1a1a2e;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.login-form input:focus {
    outline: none;
    border-color: #667eea;
    background: white;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.15);
}

.login-form input::placeholder {
    color: #9ca3af;
}

.login-error {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    border: 1px solid #fca5a5;
    color: #dc2626;
    padding: 14px 18px;
    border-radius: 12px;
    font-size: 0.875rem;
    margin-bottom: 20px;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.login-error::before {
    content: '';
    width: 20px;
    height: 20px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23dc2626' stroke-width='2'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cline x1='12' y1='8' x2='12' y2='12'/%3E%3Cline x1='12' y1='16' x2='12.01' y2='16'/%3E%3C/svg%3E");
    background-size: contain;
    flex-shrink: 0;
}

.login-btn {
    width: 100%;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 1rem;
    font-weight: 600;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5);
}

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

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

.login-btn .spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Footer text */
.login-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid #e5e7eb;
}

.login-footer p {
    color: #9ca3af;
    font-size: 0.8rem;
    margin: 0;
}

/* Logout button in nav */
.logout-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.8rem;
    transition: all 0.2s;
}

.logout-btn:hover {
    border-color: #ef4444;
    color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
}

.logout-btn svg {
    width: 14px;
    height: 14px;
}

/* Responsive */
@media (max-width: 480px) {
    .login-card {
        padding: 32px 24px;
        border-radius: 20px;
    }

    .login-header h1 {
        font-size: 1.5rem;
    }

    .login-header .login-logo {
        width: 64px;
        height: 64px;
        border-radius: 16px;
    }

    .login-header .login-logo svg {
        width: 32px;
        height: 32px;
    }
}