/* ============================================================
   PostPigeon Admin Panel - Login & MFA Styles
   Matches Samurai/MAIA two-step auth pattern
   ============================================================ */

/* ---------- Login Page Background ---------- */

body.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1E293B 0%, #312E81 50%, #4C1D95 100%);
    padding: 24px;
    position: relative;
    overflow: hidden;
}

body.login-page::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15), transparent 70%);
    top: -200px;
    right: -100px;
    pointer-events: none;
}

body.login-page::after {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.1), transparent 70%);
    bottom: -200px;
    left: -100px;
    pointer-events: none;
}

/* ---------- Login Card ---------- */

.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--color-white, #ffffff);
    border-radius: 16px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    padding: 40px;
    position: relative;
    z-index: 1;
}

.login-card form {
    transition: opacity 0.2s ease;
}

/* ---------- Logo / Brand ---------- */

.login-logo {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-primary, #6366F1), var(--color-secondary, #8B5CF6));
    border-radius: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 16px;
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.35);
    letter-spacing: 0.02em;
}

.login-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text, #1E293B);
    letter-spacing: -0.02em;
    margin: 0 0 4px;
}

.login-subtitle {
    font-size: 14px;
    color: var(--color-text-secondary, #64748b);
    margin: 0;
}

/* ---------- Form Elements ---------- */

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

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text, #1E293B);
    margin-bottom: 6px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--color-border, #E2E8F0);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    color: var(--color-text, #1E293B);
    background: var(--color-white, #ffffff);
    transition: border-color 150ms ease, box-shadow 150ms ease;
}

.form-input:focus {
    border-color: var(--color-primary, #6366F1);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
    outline: none;
}

.form-input::placeholder {
    color: var(--color-text-tertiary, #94a3b8);
}

/* ---------- Buttons ---------- */

.btn {
    display: block;
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    font-weight: 600;
    font-family: inherit;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 150ms ease;
    text-align: center;
}

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

.btn-primary {
    background: var(--color-primary, #6366F1);
    color: #ffffff;
}

.btn-primary:hover:not(:disabled) {
    background: var(--color-primary-hover, #4F46E5);
}

.btn-secondary {
    margin-top: 8px;
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary, #64748b);
    background: var(--color-bg-secondary, #f8fafc);
    border: 1px solid var(--color-border, #e2e8f0);
}

.btn-secondary:hover {
    background: var(--color-bg-tertiary, #f1f5f9);
    color: var(--color-text, #1E293B);
}

/* ---------- Error Box ---------- */

.login-error {
    background: var(--color-error-light, #FEE2E2);
    color: var(--color-error-dark, #DC2626);
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 20px;
    animation: shake 0.4s ease;
}

.login-error--policy {
    background: #fff7ed;
    border: 1px solid #fed7aa;
    color: #9a3412;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-4px); }
    40%, 80% { transform: translateX(4px); }
}

/* ---------- MFA Header ---------- */

.mfa-header {
    text-align: center;
    margin-bottom: 24px;
}

.mfa-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 12px;
    color: var(--color-primary, #6366F1);
    background: rgba(99, 102, 241, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mfa-icon svg {
    width: 24px;
    height: 24px;
}

.mfa-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text, #1E293B);
    margin: 0 0 4px;
}

.mfa-subtitle {
    font-size: 13px;
    color: var(--color-text-secondary, #64748b);
    margin: 0;
    line-height: 1.4;
}

/* ---------- MFA Code Input ---------- */

.form-input--code {
    text-align: center;
    font-size: 24px;
    font-weight: 600;
    letter-spacing: 0.5rem;
    font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
    padding: 12px 16px;
}

.form-input--code::placeholder {
    letter-spacing: 0.5rem;
    font-weight: 400;
    color: var(--color-text-tertiary, #94a3b8);
}

/* ---------- Recovery Code Toggle ---------- */

.mfa-method-toggle {
    text-align: center;
    margin-bottom: 16px;
}

.btn-link {
    background: none;
    border: none;
    color: var(--color-primary, #6366F1);
    font-size: 13px;
    font-family: inherit;
    cursor: pointer;
    text-decoration: underline;
    padding: 4px;
    transition: color 150ms ease;
}

.btn-link:hover {
    color: var(--color-primary-hover, #4F46E5);
}

/* ---------- Hidden Helper ---------- */

.hidden {
    display: none !important;
}

/* ---------- Loading Spinner ---------- */

.spinner-sm {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    vertical-align: middle;
    margin-right: 6px;
}

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