:root {
    /* Match dashboard color scheme */
    --color-bg-primary: #0a0e1a;
    --color-bg-secondary: #111827;
    --color-bg-tertiary: #1f2937;
    --color-surface: rgba(31, 41, 55, 0.6);
    --color-surface-hover: rgba(31, 41, 55, 0.8);

    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-danger: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);

    --color-text-primary: #f9fafb;
    --color-text-secondary: #d1d5db;
    --color-text-tertiary: #9ca3af;

    --color-accent-purple: #8b5cf6;
    --color-accent-red: #ef4444;

    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;

    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(139, 92, 246, 0.3);

    --transition-base: 250ms ease-in-out;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    position: relative;
    overflow: hidden;
}

/* Animated Background - matching dashboard */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 30%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(59, 130, 246, 0.15) 0%, transparent 50%);
    z-index: -1;
    animation: backgroundPulse 15s ease-in-out infinite;
}

@keyframes backgroundPulse {
    0%, 100% {
        opacity: 0.5;
    }
    50% {
        opacity: 0.8;
    }
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-card {
    background: var(--color-bg-secondary);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-xl);
    animation: slideIn 0.3s ease-out;
}

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

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

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.logo-icon {
    font-size: 2.5rem;
}

.logo h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.subtitle {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.form-group input {
    padding: 0.75rem 1rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: inherit;
    transition: all var(--transition-base);
    background: var(--color-surface);
    color: var(--color-text-primary);
}

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

.form-group input:focus {
    outline: none;
    border-color: var(--color-accent-purple);
    background: var(--color-surface-hover);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.error-message {
    padding: 0.75rem;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--color-accent-red);
    border-radius: var(--radius-md);
    color: var(--color-accent-red);
    font-size: 0.875rem;
    text-align: center;
}

.btn-login {
    padding: 0.875rem 1.5rem;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: inherit;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    position: relative;
    overflow: hidden;
}

.btn-login::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.2) 0%, rgba(118, 75, 162, 0.2) 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.btn-login:hover::before {
    opacity: 1;
}

.btn-login:active {
    transform: translateY(-1px);
}

.btn-login:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

.login-footer {
    margin-top: var(--spacing-lg);
    text-align: center;
    color: var(--color-text-tertiary);
    font-size: 0.75rem;
}

/* Responsive */
@media (max-width: 480px) {
    .login-card {
        padding: var(--spacing-lg);
    }

    .logo h1 {
        font-size: 1.5rem;
    }

    .logo-icon {
        font-size: 2rem;
    }
}