:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #f0f9ff;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --background-color: #f8fafc;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --card-shadow: 0 10px 25px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, var(--primary-light), #ffffff);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    background: white;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    width: 100%;
    max-width: 400px;
    overflow: hidden;
}

.login-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 30px 24px;
    text-align: center;
}

.login-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.login-header p {
    opacity: 0.9;
    font-size: 0.9rem;
}

.tenant-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.1);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    margin-top: 8px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.login-form {
    padding: 32px 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.2s ease;
    background: white;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-input.error {
    border-color: var(--error-color);
}

.input-icon {
    position: relative;
}

.input-icon i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.input-icon .form-input {
    padding-left: 44px;
}

.btn-login {
    width: 100%;
    padding: 14px 20px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-login:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.btn-login:disabled {
    background: #9ca3af;
    cursor: not-allowed;
    transform: none;
}

.btn-login.loading {
    position: relative;
    color: transparent;
}

.btn-login.loading::after {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.message {
    margin: 16px 0;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.message.success {
    background: #ecfdf5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.message.error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.message.info {
    background: #eff6ff;
    color: #1e40af;
    border: 1px solid #bfdbfe;
}

.error-message {
    color: var(--error-color);
    font-size: 0.8rem;
    margin-top: 4px;
    display: block;
    min-height: 1rem;
}

.loading-state {
    display: none;
    text-align: center;
    padding: 40px 20px;
}

.loading-state.active {
    display: block;
}

.loading-state .spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

.forgot-password {
    text-align: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.forgot-password a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.9rem;
}

.forgot-password a:hover {
    text-decoration: underline;
}

.footer {
    text-align: center;
    padding: 20px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    background: #f8fafc;
}

/* Responsive */
@media (max-width: 480px) {
    .login-container {
        margin: 10px;
        border-radius: 12px;
    }
    
    .login-header {
        padding: 24px 20px;
    }
    
    .login-form {
        padding: 24px 20px;
    }
}

/* Estados específicos */
.tenant-not-found {
    text-align: center;
    padding: 40px 24px;
}

.tenant-not-found i {
    font-size: 3rem;
    color: var(--error-color);
    margin-bottom: 16px;
}

.tenant-not-found h2 {
    color: var(--error-color);
    margin-bottom: 8px;
}

.tenant-not-found p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}