/* ═══════════════════════════════════════════════════════════════
   AUTHENTICATION — Passkeys + Google OAuth
   Cinematic dark aesthetic · GRXHUB design system
   ═══════════════════════════════════════════════════════════════ */


/* ───────────────────────────────────────────────────────────────
   1. NAV — Login Button (signed out)
   ─────────────────────────────────────────────────────────────── */
.nav-login-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 6px 14px;
    background: transparent;
    border: var(--border-thin) solid var(--border-default);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-size: var(--text-xs);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.nav-login-btn i {
    font-size: 15px;
}

.nav-login-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
    background: var(--bg-secondary);
    transform: translateY(-1px);
}


/* ───────────────────────────────────────────────────────────────
   2. NAV — User Avatar + Dropdown (signed in)
   ─────────────────────────────────────────────────────────────── */
.nav-user {
    position: relative;
}

.nav-user-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    border: var(--border-thin) solid var(--border-default);
    border-radius: var(--radius-full);
    background: var(--bg-tertiary);
    cursor: pointer;
    overflow: hidden;
    transition: all var(--transition-fast);
}

.nav-user-btn:hover {
    border-color: var(--border-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.nav-user-avatar {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: var(--radius-full);
}

.nav-user-initial {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    line-height: 1;
}

/* Dropdown */
.nav-user-dropdown {
    position: absolute;
    top: calc(100% + var(--space-sm));
    right: 0;
    min-width: 220px;
    background: var(--bg-elevated);
    border: var(--border-thin) solid var(--border-subtle);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--space-sm);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px) scale(0.97);
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
    z-index: var(--z-dropdown);
}

.nav-user-dropdown.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.user-dropdown-header {
    padding: var(--space-sm);
}

.user-dropdown-name {
    display: block;
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.user-dropdown-email {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 2px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-dropdown-divider {
    height: 1px;
    background: var(--border-subtle);
    margin: var(--space-xs) 0;
}

.user-dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    width: 100%;
    padding: var(--space-sm);
    border: none;
    background: transparent;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.user-dropdown-item i {
    font-size: 16px;
    flex-shrink: 0;
}

.user-dropdown-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.user-dropdown-item--danger:hover {
    color: var(--accent-red);
}


/* ───────────────────────────────────────────────────────────────
   3. AUTH MODAL — Overlay + Dialog
   ─────────────────────────────────────────────────────────────── */
.auth-overlay {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
    pointer-events: none;
    visibility: hidden;
}

.auth-overlay.active {
    pointer-events: auto;
    visibility: visible;
}

.auth-backdrop {
    position: absolute;
    inset: 0;
    background: var(--bg-overlay);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.auth-overlay.active .auth-backdrop {
    opacity: 1;
}

.auth-dialog {
    position: relative;
    width: 100%;
    max-width: 400px;
    background: var(--bg-secondary);
    border: var(--border-thin) solid var(--border-subtle);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    opacity: 0;
    transform: scale(0.95) translateY(8px);
    transition: opacity var(--transition-base), transform var(--transition-base);
}

.auth-overlay.active .auth-dialog {
    opacity: 1;
    transform: scale(1) translateY(0);
}

.auth-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 20px;
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 1;
}

.auth-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}


/* ───────────────────────────────────────────────────────────────
   4. AUTH MODAL — Steps
   ─────────────────────────────────────────────────────────────── */
.auth-body {
    padding: var(--space-xl) var(--space-lg) var(--space-lg);
}

.auth-step {
    display: none;
}

.auth-step.active {
    display: block;
}

.auth-header-block {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.auth-title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    margin: 0 0 var(--space-xs);
}

.auth-subtitle {
    font-size: var(--text-sm);
    color: var(--text-muted);
    margin: 0;
    line-height: 1.5;
}

.auth-subtitle strong {
    color: var(--text-secondary);
}

/* Error message */
.auth-error {
    display: none;
    padding: var(--space-sm) var(--space-md);
    background: color-mix(in srgb, var(--accent-red) 10%, transparent);
    border: var(--border-thin) solid color-mix(in srgb, var(--accent-red) 25%, transparent);
    border-radius: var(--radius-sm);
    color: var(--accent-red);
    font-size: var(--text-xs);
    margin-bottom: var(--space-md);
    text-align: center;
}

.auth-error.visible {
    display: block;
}


/* ───────────────────────────────────────────────────────────────
   5. AUTH MODAL — Passkey Button
   ─────────────────────────────────────────────────────────────── */
.auth-passkey-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    width: 100%;
    padding: 12px var(--space-md);
    background: var(--accent-blue);
    border: none;
    border-radius: var(--radius-md);
    color: #fff;
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.auth-passkey-btn:hover {
    filter: brightness(1.1);
    box-shadow: 0 4px 16px color-mix(in srgb, var(--accent-blue) 30%, transparent);
    transform: translateY(-1px);
}

.auth-passkey-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    filter: none;
    box-shadow: none;
}

.auth-passkey-btn i {
    font-size: 20px;
}


/* ───────────────────────────────────────────────────────────────
   6. AUTH MODAL — Google Button + Divider
   ─────────────────────────────────────────────────────────────── */
.auth-google-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    width: 100%;
    padding: 10px var(--space-md);
    background: transparent;
    border: var(--border-thin) solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.auth-google-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-hover);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.auth-google-btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin: var(--space-lg) 0;
    color: var(--text-muted);
    font-size: var(--text-xs);
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-subtle);
}


/* ───────────────────────────────────────────────────────────────
   7. AUTH MODAL — Register Passkey Step
   ─────────────────────────────────────────────────────────────── */
.auth-register-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-md);
    background: color-mix(in srgb, var(--accent-blue) 12%, transparent);
    border-radius: var(--radius-lg);
}

.auth-register-icon i {
    font-size: 28px;
    color: var(--accent-blue);
}

.auth-skip-link {
    display: block;
    width: 100%;
    padding: var(--space-md) 0 0;
    background: none;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-body);
    font-size: var(--text-xs);
    cursor: pointer;
    transition: color var(--transition-fast);
    text-align: center;
}

.auth-skip-link:hover {
    color: var(--text-secondary);
}


/* ───────────────────────────────────────────────────────────────
   8. AUTH MODAL — Form Fields (kept for potential future use)
   ─────────────────────────────────────────────────────────────── */
.auth-field {
    margin-bottom: var(--space-md);
}

.auth-field label {
    display: block;
    font-family: var(--font-body);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
}

.auth-field .form-input {
    width: 100%;
}

.auth-field .form-input:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-blue) 15%, transparent);
}

.auth-submit {
    width: 100%;
    margin-top: var(--space-sm);
}

.auth-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Back link */
.auth-back-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2px;
    width: 100%;
    padding: var(--space-sm) 0 0;
    background: none;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-body);
    font-size: var(--text-xs);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.auth-back-link:hover {
    color: var(--text-secondary);
}

.auth-back-link i {
    font-size: 16px;
}


/* ───────────────────────────────────────────────────────────────
   9. AUTH GATE — Login prompt for protected apps
   ─────────────────────────────────────────────────────────────── */
.auth-gate {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - var(--header-height));
    padding: var(--space-xl);
    text-align: center;
}

.auth-gate-icon {
    font-size: 56px;
    color: var(--text-disabled);
    margin-bottom: var(--space-lg);
}

.auth-gate-title {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    letter-spacing: -0.02em;
}

.auth-gate-desc {
    font-size: var(--text-base);
    color: var(--text-muted);
    margin-bottom: var(--space-xl);
    max-width: 360px;
    line-height: 1.6;
}

.auth-gate-btn {
    min-width: 180px;
}


/* ───────────────────────────────────────────────────────────────
   10. ANIMATIONS
   ─────────────────────────────────────────────────────────────── */
.auth-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: var(--radius-full);
    animation: auth-spin 0.6s linear infinite;
}

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

@keyframes auth-shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-6px); }
    40% { transform: translateX(6px); }
    60% { transform: translateX(-4px); }
    80% { transform: translateX(4px); }
}


/* ───────────────────────────────────────────────────────────────
   11. RESPONSIVE
   ─────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
    .nav-login-label {
        display: none;
    }

    .nav-login-btn {
        padding: 6px 8px;
    }

    .auth-dialog {
        max-width: none;
        margin: 0 var(--space-sm);
    }
}

@media (max-width: 480px) {
    .auth-body {
        padding: var(--space-lg) var(--space-md) var(--space-md);
    }

    .auth-dialog {
        border-radius: var(--radius-lg);
    }
}