/* ========================================
   Login Page - Scoped Component Styles
   ========================================
   Inherits from app.css:
     - .form-control, .form-label (section 4)
     - .alert, .alert-danger/success (section 7)
     - .btn, .btn-primary (section 5)
     - .spinner-border, @keyframes spin (section 11)
     - Reduced motion (section 17)
   Only page-specific additions and overrides below.
   ======================================== */

/* ========================================
   Page Container
   ======================================== */
.login-page {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-gradient);
    padding: var(--space-6);
}

.login-container {
    width: 100%;
    max-width: 360px;
}

/* ========================================
   Header
   ======================================== */
.login-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.login-brand {
    font-family: var(--font-family-heading);
    font-size: 1.75rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0;
}

.login-subtitle {
    font-family: var(--font-family-base);
    color: var(--text-placeholder);
    margin-top: var(--space-1);
    font-size: var(--text-base);
}

/* ========================================
   Login Card
   ======================================== */
.login-card {
    background: var(--surface-elevated);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 0.5px solid var(--border-default);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-xl);
}

.login-title {
    font-family: var(--font-family-base);
    font-size: var(--text-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    text-align: center;
    margin-bottom: var(--space-6);
}

/* ========================================
   Form Groups (page-specific spacing)
   ======================================== */
.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    font-family: var(--font-family-base);
}

.form-control:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.form-control.is-invalid {
    border-color: rgba(220, 38, 38, 0.5);
}

/* ========================================
   Login Button
   ======================================== */
.btn-login {
    width: 100%;
    padding: var(--space-4);
    background: linear-gradient(180deg, #ef4444 0%, #dc2626 100%);
    border: none;
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-family: var(--font-family-base);
    font-weight: var(--font-weight-semibold);
    font-size: var(--text-base);
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-spring);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    box-shadow: 0 4px 12px rgba(220, 38, 38, 0.3);
    -webkit-tap-highlight-color: transparent;
}

.btn-login:hover:not(:disabled) {
    box-shadow: 0 6px 18px rgba(220, 38, 38, 0.4);
    transform: translateY(-1px);
}

.btn-login:active:not(:disabled) {
    transform: translateY(0) scale(0.98);
    box-shadow: 0 2px 8px rgba(220, 38, 38, 0.3);
}

.btn-login:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    box-shadow: none;
}

/* ========================================
   Footer
   ======================================== */
.login-footer {
    text-align: center;
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 0.5px solid var(--border-light);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-family-base);
    color: var(--text-placeholder);
    text-decoration: none;
    transition: color var(--duration-fast) var(--ease-spring);
}

.back-link:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.back-link svg {
    transition: transform var(--duration-fast) var(--ease-out);
}

.back-link:hover svg {
    transform: translateX(-3px);
}

/* ========================================
   Loading Spinner (inline, page-specific)
   ======================================== */
.spinner-sm {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--text-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ========================================
   Alert (page-specific override — tighter spacing)
   ======================================== */
.alert {
    margin-bottom: var(--space-5);
}

.alert svg {
    flex-shrink: 0;
}

/* ========================================
   Two-Factor Authentication Step
   ======================================== */
.tfa-description {
    color: var(--text-secondary);
    font-family: var(--font-family-base);
    font-size: var(--text-sm);
    margin-bottom: var(--space-6);
    text-align: center;
}

.tfa-code-input {
    font-size: var(--text-2xl);
    letter-spacing: 0.4em;
    text-align: center;
    font-family: 'Courier New', monospace;
    font-weight: var(--font-weight-bold);
}

.tfa-fallback {
    text-align: center;
    margin: var(--space-3) 0 var(--space-4);
}

.tfa-fallback .btn-link {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    font-family: var(--font-family-base);
    font-size: var(--text-sm);
    text-decoration: underline;
    padding: var(--space-1) var(--space-2);
}

.tfa-fallback .btn-link:hover {
    color: var(--text-secondary);
}

.tfa-email-status {
    display: block;
    font-family: var(--font-family-base);
    font-size: var(--text-xs);
    margin-top: var(--space-1);
}

.tfa-email-status.text-success {
    color: var(--color-success);
}

.tfa-email-status.text-danger {
    color: var(--color-error);
}

.btn-back {
    display: block;
    width: 100%;
    background: none;
    border: 1px solid var(--border-default);
    color: var(--text-secondary);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    margin-top: var(--space-3);
    cursor: pointer;
    font-family: var(--font-family-base);
    font-size: var(--text-sm);
    transition: all var(--duration-fast) var(--ease-out);
}

.btn-back:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}