:root {
    --login-gradient-start: #83b6ad;
    --login-gradient-end: #fbbf24;
}

body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f0fdf4 0%, #fffbeb 100%);
    position: relative;
    overflow: hidden;
}

/* Animated Background */
body::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(131, 182, 173, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.login-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 450px;
    padding: var(--spacing-lg);
}

.login-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    animation: slideUp 0.6s ease-out;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.login-logo {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--spacing-lg);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.login-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.login-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-subtitle {
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
}

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

.input-group {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.input-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-gray-300);
    font-size: var(--font-size-lg);
    transition: color var(--transition-fast);
}

.input-group input:focus+.input-icon {
    color: var(--color-primary);
}

.login-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 3rem;
    font-size: var(--font-size-base);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    transition: all var(--transition-fast);
    font-family: var(--font-family);
}

.login-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(131, 182, 173, 0.1);
}

.login-input::placeholder {
    color: var(--color-gray-300);
}

.login-button {
    width: 100%;
    padding: var(--spacing-md);
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: white;
    background: linear-gradient(135deg, var(--color-primary), var(--color-green-hover));
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-md);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.login-button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.login-button:active:not(:disabled) {
    transform: translateY(0);
}

.login-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

.login-link {
    color: var(--color-primary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: color var(--transition-fast);
}

.login-link:hover {
    color: var(--color-green-hover);
}

.login-footer {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
    animation: slideDown 0.3s ease-out;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border: 2px solid #fca5a5;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border: 2px solid #6ee7b7;
}

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

.login-button.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    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: translate(-50%, -50%) rotate(360deg);
    }
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .login-container {
        padding: var(--spacing-md);
    }

    .login-card {
        padding: var(--spacing-xl);
    }

    .login-logo {
        width: 100px;
        height: 100px;
    }

    .login-title {
        font-size: var(--font-size-xl);
    }
}