/**
 * Layout Styles
 * Dashboard Layout, Navigation, Main Content, Expert Detail Page Layout
 */

/* ============================================
   DASHBOARD LAYOUT
   ============================================ */

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Top Navigation */
.top-nav {
    background: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 50;
}

.nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 32px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    cursor: pointer;
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.logo:hover {
    text-decoration: none;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: var(--primary-color);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.logo-content {
    min-width: 0;
    flex: 1;
}

.logo-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0;
    flex-wrap: nowrap;
}

.logo-text {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.logo-separator {
    color: var(--text-secondary);
    font-weight: 400;
    font-size: 18px;
    margin: 0 6px;
}

.logo-expert-name {
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 600;
}

.header-status {
    margin-left: 12px;
}

.header-status .status-badge {
    font-size: 11px;
    padding: 2px 8px;
}

.logo-subtitle {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 400;
    margin-top: -2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* User Menu */
.user-menu {
    position: relative;
}

.user-menu-button {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 14px;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.user-menu-button:hover {
    background: var(--background-color);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 500;
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 8px;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    min-width: 200px;
    z-index: 100;
    display: none;
}

.user-dropdown.show {
    display: block;
}

.dropdown-header {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.dropdown-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.dropdown-email {
    font-size: 12px;
    color: var(--text-secondary);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 12px 16px;
    background: none;
    border: none;
    text-align: left;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 14px;
    transition: background 0.2s ease;
}

.dropdown-item:hover {
    background: var(--background-color);
}

.dropdown-item svg {
    width: 16px;
    height: 16px;
    color: var(--text-secondary);
}

.dropdown-kb-section {
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.dropdown-section-label {
    padding: 10px 16px 6px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.dropdown-item-danger {
    color: var(--error-color);
}

.dropdown-item-danger:hover {
    background: #fef2f2;
}

.dropdown-item-danger svg {
    color: var(--error-color);
}

/* User Settings Modal */
.settings-modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.settings-modal {
    background: var(--surface-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg, 0 20px 60px rgba(0,0,0,0.15));
    width: 440px;
    max-width: 90vw;
}

.settings-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.settings-modal-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
}

.settings-modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0;
    line-height: 1;
}

.settings-modal-close:hover {
    color: var(--text-primary);
}

.settings-modal-body {
    padding: 24px;
}

.settings-field {
    margin-bottom: 16px;
}

.settings-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.settings-hint {
    font-size: 12px;
    color: var(--text-secondary);
    margin: 0 0 10px 0;
}

.settings-phone-row {
    display: flex;
    gap: 8px;
}

.settings-input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
}

.settings-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.settings-save-btn {
    padding: 8px 20px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    cursor: pointer;
}

.settings-save-btn:hover {
    opacity: 0.9;
}

.settings-phone-status {
    font-size: 13px;
    margin-top: 8px;
    min-height: 20px;
}

.settings-phone-status.success {
    color: var(--success-color, #16a34a);
}

.settings-phone-status.error {
    color: var(--error-color);
}

/* Phone verification code input */
.verify-code-input {
    letter-spacing: 0.3em;
    text-align: center;
    font-variant-numeric: tabular-nums;
    font-size: 18px;
    max-width: 160px;
}

/* Verification info text */
.verify-info-text {
    font-size: 12px;
    color: var(--text-secondary);
    margin: 8px 0 0 0;
}

/* Phone action links (change, remove, resend) */
.phone-action-link {
    font-size: 13px;
    color: var(--primary-color);
    text-decoration: none;
    cursor: pointer;
}

.phone-action-link:hover {
    text-decoration: underline;
}

.phone-action-danger {
    color: var(--error-color);
}

/* Verified phone state */
.phone-verified-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.phone-verified-badge {
    display: inline-block;
    padding: 2px 8px;
    background: #dcfce7;
    color: #15803d;
    font-size: 11px;
    font-weight: 600;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.phone-verified-number {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

.phone-verified-actions {
    display: flex;
    gap: 16px;
}

/* Pending Status Banner */
.pending-banner {
    background: linear-gradient(135deg, #eef2ff 0%, #e0e7ff 100%);
    border-bottom: 1px solid #c7d2fe;
    padding: 16px 32px;
}

.pending-banner-content {
    display: flex;
    align-items: center;
    gap: 16px;
    max-width: 1200px;
    margin: 0 auto;
}

.pending-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid #c7d2fe;
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    flex-shrink: 0;
}

.pending-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.pending-text strong {
    color: var(--text-primary);
    font-size: 14px;
}

.pending-text span {
    color: var(--text-secondary);
    font-size: 13px;
}

/* Pending state disabled elements */
.pending-disabled {
    opacity: 0.5;
    pointer-events: none;
    user-select: none;
}

.pending-disabled .upload-zone,
.pending-disabled .quick-test-textarea,
.pending-disabled .quick-test-btn,
.pending-disabled .rail-item,
.pending-disabled .mcp-toggle {
    cursor: not-allowed;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 32px;
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.page-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.page-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    margin: 4px 0 0;
}

/* ============================================
   EXPERT DETAIL PAGE
   ============================================ */

/* Three Column Layout - Rail + Concierge + Rail */
.detail-columns {
    display: flex;
    height: calc(100vh - 120px);
    gap: 0;
}

/* Rail Panel (left and right) */
.rail-panel {
    display: flex;
    flex-shrink: 0;
    overflow: hidden;
    transition: width 0.25s ease;
    background: linear-gradient(180deg, var(--surface-color) 0%, #f8fafc 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.rail-panel.collapsed {
    width: 70px;
}

.rail-panel.expanded {
    width: 420px;
}

.rail-panel.expanded.wide {
    width: 50%;
}

.rail-panel-left {
    flex-direction: row;
}

.rail-panel-right {
    flex-direction: row-reverse;
}

/* Rail (icon strip) */
.rail {
    width: 70px;
    min-width: 70px;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 8px 0;
    gap: 2px;
    overflow-y: auto;
    border-right: 1px solid var(--border-color);
}

.rail-panel-right .rail {
    border-right: none;
    border-left: 1px solid var(--border-color);
}

/* Rail Item */
.rail-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: 10px 4px;
    width: 62px;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.15s ease;
    text-align: center;
}

.rail-item:hover {
    background: linear-gradient(135deg, #fafbff 0%, #eef2ff 100%);
}

.rail-item.active {
    background: linear-gradient(135deg, #eef2ff 0%, #dbeafe 100%);
}

.rail-item.active svg {
    color: var(--primary-color);
}

.rail-item svg {
    width: 20px;
    height: 20px;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.rail-item-label {
    font-size: 9px;
    color: var(--text-secondary);
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 58px;
}

.rail-item.active .rail-item-label {
    color: var(--primary-color);
    font-weight: 500;
}

/* Panel Content (expandable area) */
.panel-content {
    display: none;
    flex-direction: column;
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.rail-panel.expanded .panel-content {
    display: flex;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.panel-header-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.panel-header-actions {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}

.panel-expand-btn,
.panel-close-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.15s ease;
    flex-shrink: 0;
}

.panel-expand-btn:hover,
.panel-close-btn:hover {
    background: var(--background-color);
    color: var(--text-primary);
}

.panel-body {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

/* Center Column (Concierge) */
.detail-column {
    background: linear-gradient(180deg, var(--surface-color) 0%, #f8fafc 100%);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.column-expert {
    flex: 1;
    min-width: 300px;
    margin: 0 8px;
}

/* Column Header */
.column-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}

.column-header-text {
    flex: 1;
    min-width: 0;
}

.column-header-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 4px 0;
}

.column-header-subtitle {
    font-size: 12px;
    color: var(--text-secondary);
    margin: 0;
}

/* Column Content */
.column-content {
    flex: 1;
    padding: 16px;
    overflow-y: auto;
}

/* When column content contains the concierge chat, remove padding and let chat fill */
.column-content:has(#concierge-content-wrapper) {
    padding: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.column-content:has(#concierge-content-wrapper) > .test-questions-tab-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.column-content:has(#concierge-content-wrapper) #concierge-content-wrapper {
    flex: 1;
}


/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    .nav-header {
        padding: 12px 16px;
    }

    .main-content {
        padding: 16px;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .experts-grid {
        grid-template-columns: 1fr;
    }

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

    .logo-text,
    .logo-subtitle {
        display: none;
    }
}