/* Enhanced Login Page - LVL UP Blue Branding */

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-login);
    position: relative;
    overflow: hidden;
    padding: var(--spacing-lg);
}

/* Animated Background Pattern */
.login-page::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(91, 163, 187, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(63, 137, 161, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(43, 106, 125, 0.1) 0%, transparent 40%);
    animation: shimmer 15s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.login-container {
    position: relative;
    z-index: 10;
    width: 100%;
    max-width: 480px;
}

.login-brand {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.login-logo {
    max-width: 240px;
    height: auto;
    margin: 0 auto var(--spacing-lg);
    filter: drop-shadow(0 4px 12px rgba(63, 137, 161, 0.3));
}

.login-tagline {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1.125rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.login-card {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    box-shadow: 
        0 20px 60px rgba(30, 78, 94, 0.4),
        0 0 0 1px rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.login-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.login-header h1 {
    font-size: 1.875rem;
    margin-bottom: var(--spacing-sm);
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-header p {
    color: var(--color-gray-600);
    font-size: 1rem;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-input {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    background: white;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-lvlup-blue-light);  /* Light blue border on focus */
    box-shadow: 0 0 0 3px rgba(91, 163, 187, 0.15);  /* Light blue glow */
}

.form-input::placeholder {
    color: var(--color-gray-400);
}

.btn-login {
    width: 100%;
    padding: 1rem;
    font-size: 1.0625rem;
    background: var(--gradient-button);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-blue);
    margin-top: var(--spacing-md);
}

.btn-login:hover {
    background: var(--gradient-button-hover);
    box-shadow: var(--shadow-xl);
    transform: translateY(-2px);
}

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

.error-message {
    display: none;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--color-danger);
    border-radius: var(--radius-md);
    color: var(--color-danger);
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-lg);
}

.error-message.show {
    display: flex;
}

.login-footer {
    margin-top: var(--spacing-xl);
    text-align: center;
    color: var(--color-gray-500);
    font-size: 0.875rem;
}

/* Mobile Adjustments */
@media (max-width: 640px) {
    .login-page {
        padding: var(--spacing-md);
    }
    
    .login-logo {
        max-width: 180px;
    }
    
    .login-tagline {
        font-size: 0.9375rem;
    }
    
    .login-card {
        padding: var(--spacing-xl);
    }
    
    .login-header h1 {
        font-size: 1.5rem;
    }
    
    .form-input {
        padding: 0.75rem 0.875rem;
        font-size: 0.9375rem;
    }
    
    .btn-login {
        padding: 0.875rem;
        font-size: 1rem;
    }
}

/* Loading State */
.btn-login.loading {
    position: relative;
    color: transparent;
}

.btn-login.loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.6s linear infinite;
}

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