/* ==========================================================================
   GEO Pulse — Enterprise Clean SaaS Design System (Light Default + Dark Mode)
   Inspired by Stripe, Linear & Apple Enterprise Standards
   ========================================================================== */

:root {
    /* --- Light Mode (Default) --- */
    --bg-page: #f8fafc;
    --bg-surface: #ffffff;
    --bg-surface-subtle: #f1f5f9;
    --bg-surface-hover: #e2e8f0;
    
    --border-color: #e2e8f0;
    --border-color-focus: #3b82f6;
    
    --text-main: #0f172a;
    --text-muted: #475569;
    --text-light: #94a3b8;
    
    --brand-primary: #1d4ed8;
    --brand-primary-hover: #1e40af;
    --brand-primary-light: #eff6ff;
    --brand-primary-border: #bfdbfe;
    
    --success: #059669;
    --success-light: #ecfdf5;
    --success-border: #a7f3d0;
    
    --warning: #d97706;
    --warning-light: #fffbeb;
    --warning-border: #fde68a;
    
    --purple: #6d28d9;
    --purple-light: #f5f3ff;
    --purple-border: #ddd6fe;

    --sidebar-width: 260px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.07), 0 4px 6px -4px rgba(0, 0, 0, 0.04);

    --transition: all 0.18s ease;
}

/* Dark Mode Overrides */
[data-theme="dark"] {
    --bg-page: #090d16;
    --bg-surface: #111827;
    --bg-surface-subtle: #1f2937;
    --bg-surface-hover: #374151;
    
    --border-color: #1f2937;
    --border-color-focus: #60a5fa;
    
    --text-main: #f9fafb;
    --text-muted: #9ca3af;
    --text-light: #6b7280;
    
    --brand-primary: #3b82f6;
    --brand-primary-hover: #2563eb;
    --brand-primary-light: rgba(59, 130, 246, 0.12);
    --brand-primary-border: rgba(59, 130, 246, 0.3);
    
    --success: #10b981;
    --success-light: rgba(16, 185, 129, 0.12);
    --success-border: rgba(16, 185, 129, 0.3);
    
    --warning: #f59e0b;
    --warning-light: rgba(245, 158, 11, 0.12);
    --warning-border: rgba(245, 158, 11, 0.3);
    
    --purple: #a855f7;
    --purple-light: rgba(168, 85, 247, 0.12);
    --purple-border: rgba(168, 85, 247, 0.3);

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-page);
    color: var(--text-main);
    line-height: 1.5;
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

/* Container Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-surface);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 24px 16px;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 20;
}

.sidebar-header {
    padding: 0 8px 24px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
}

.logo-box {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon-wrap {
    width: 36px;
    height: 36px;
    background: var(--brand-primary);
    color: #ffffff;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
}

.brand-title {
    font-size: 16px;
    font-weight: 800;
    letter-spacing: -0.3px;
    color: var(--text-main);
}

.brand-badge {
    font-size: 10px;
    font-weight: 700;
    background: var(--bg-surface-subtle);
    color: var(--text-muted);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    margin-left: 6px;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 3px;
    flex: 1;
    overflow-y: auto;
}

.nav-section-title {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-light);
    letter-spacing: 0.6px;
    text-transform: uppercase;
    padding: 16px 8px 6px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-item i {
    font-size: 15px;
    width: 18px;
    text-align: center;
    color: var(--text-light);
}

.nav-item:hover {
    background-color: var(--bg-surface-subtle);
    color: var(--text-main);
}

.nav-item.active {
    background-color: var(--brand-primary-light);
    color: var(--brand-primary);
}

.nav-item.active i {
    color: var(--brand-primary);
}

.nav-tag {
    margin-left: auto;
    font-size: 11px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 4px;
    background: var(--bg-surface-subtle);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
}

.nav-tag.active-tag {
    background: var(--success-light);
    color: var(--success);
    border-color: var(--success-border);
}

.sidebar-footer {
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.user-snippet {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px;
    border-radius: var(--radius-sm);
}

.user-avatar-initials {
    width: 32px;
    height: 32px;
    background: var(--bg-surface-subtle);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
}

.user-text-name {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-main);
    display: block;
    line-height: 1.2;
}

.user-text-role {
    font-size: 11px;
    color: var(--text-light);
}

/* --- Main Content Area --- */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: 32px 48px;
    max-width: 1360px;
}

/* Header & Top Bar */
.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.page-headings h1 {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: -0.4px;
    color: var(--text-main);
    margin-bottom: 4px;
}

.page-headings p {
    font-size: 13px;
    color: var(--text-muted);
}

.top-bar-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Theme Toggle Button */
.theme-toggle-btn {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.theme-toggle-btn:hover {
    background: var(--bg-surface-subtle);
    color: var(--text-main);
}

/* Status Indicator */
.system-status-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 7px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
}

.live-dot {
    width: 8px;
    height: 8px;
    background-color: var(--success);
    border-radius: 50%;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    cursor: pointer;
    border: 1px solid transparent;
    transition: var(--transition);
    text-decoration: none;
    font-family: inherit;
}

.btn-primary {
    background-color: var(--brand-primary);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: var(--brand-primary-hover);
}

.btn-secondary {
    background-color: var(--bg-surface);
    border-color: var(--border-color);
    color: var(--text-main);
}

.btn-secondary:hover {
    background-color: var(--bg-surface-subtle);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* Metric Cards */
.metrics-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

@media (max-width: 1100px) {
    .metrics-row {
        grid-template-columns: repeat(2, 1fr);
    }
}

.metric-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: var(--shadow-sm);
}

.metric-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.metric-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
}

.metric-icon-small {
    font-size: 14px;
    color: var(--text-light);
}

.metric-number {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text-main);
    line-height: 1.1;
    margin-bottom: 6px;
}

.metric-sub {
    font-size: 12px;
    font-weight: 600;
}

.text-success { color: var(--success); }
.text-brand { color: var(--brand-primary); }
.text-purple { color: var(--purple); }

/* Content Cards & Grids */
.grid-two-col {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 24px;
}

@media (max-width: 1024px) {
    .grid-two-col {
        grid-template-columns: 1fr;
    }
}

.card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.card-header {
    padding: 18px 22px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-main);
}

.card-subtitle {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

.card-body {
    padding: 22px;
}

/* Structured Audit Items */
.audit-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.audit-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 14px 16px;
    background: var(--bg-surface-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.audit-status-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    flex-shrink: 0;
    margin-top: 2px;
}

.status-ok {
    background: var(--success-light);
    color: var(--success);
    border: 1px solid var(--success-border);
}

.status-wait {
    background: var(--warning-light);
    color: var(--warning);
    border: 1px solid var(--warning-border);
}

.audit-details {
    flex: 1;
}

.audit-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-main);
}

.audit-desc {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Chat Simulator Widget */
.simulation-chat {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 18px;
}

.sim-bubble-user {
    background: var(--bg-surface-subtle);
    border: 1px solid var(--border-color);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-main);
}

.sim-bubble-ai {
    background: #ffffff;
    border: 1px solid var(--brand-primary-border);
    padding: 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    line-height: 1.6;
    box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .sim-bubble-ai {
    background: #1e293b;
}

.ai-engine-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-weight: 700;
    color: var(--brand-primary);
    margin-bottom: 8px;
}

.citation-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    font-weight: 600;
    background: var(--brand-primary-light);
    color: var(--brand-primary);
    border: 1px solid var(--brand-primary-border);
    padding: 3px 8px;
    border-radius: 4px;
    margin-top: 10px;
}

/* Table Style */
.clean-table {
    width: 100%;
    border-collapse: collapse;
}

.clean-table th, .clean-table td {
    padding: 14px 18px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.clean-table th {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-muted);
    background-color: var(--bg-surface-subtle);
}

.clean-table td {
    font-size: 13px;
}

/* Form Controls */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 6px;
}

.form-input {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-main);
    font-family: inherit;
    outline: none;
    transition: var(--transition);
}

.form-input:focus {
    border-color: var(--border-color-focus);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

/* Tab Switching */
.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

/* Badge System */
.chip {
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.chip-success {
    background: var(--success-light);
    color: var(--success);
    border: 1px solid var(--success-border);
}

.chip-neutral {
    background: var(--bg-surface-subtle);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
}

/* ==========================================================================
   Master Key Lock Screen & Authentication Overlay
   ========================================================================== */
.login-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 99999;
    opacity: 1;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.login-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.login-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.35);
    width: 100%;
    max-width: 400px;
    padding: 36px 32px;
    text-align: center;
    position: relative;
    animation: loginCardPop 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes loginCardPop {
    0% { transform: scale(0.92); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

.login-icon-box {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: linear-gradient(135deg, #1d4ed8, #3b82f6);
    color: #fff;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    margin-bottom: 20px;
    box-shadow: 0 8px 16px rgba(37, 99, 235, 0.3);
}

.login-title {
    font-size: 22px;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.login-subtitle {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.5;
    margin-bottom: 24px;
}

.login-input-wrap {
    position: relative;
    margin-bottom: 16px;
}

.login-input-wrap i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    font-size: 14px;
}

.login-input-field {
    width: 100%;
    padding: 13px 14px 13px 40px;
    background: var(--bg-surface-subtle);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 14px;
    color: var(--text-main);
    font-family: inherit;
    outline: none;
    transition: var(--transition);
}

.login-input-field:focus {
    border-color: var(--brand-primary);
    background: var(--bg-surface);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.login-submit-btn {
    width: 100%;
    padding: 13px 16px;
    background: var(--brand-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

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

.login-error-text {
    color: #ef4444;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
    display: none;
}

.login-hint-text {
    margin-top: 20px;
    font-size: 11px;
    color: var(--text-light);
}

.login-hint-text code {
    background: var(--bg-surface-subtle);
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    font-family: 'JetBrains Mono', monospace;
    color: var(--brand-primary);
}

.logout-icon-btn {
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 14px;
    cursor: pointer;
    padding: 6px;
    border-radius: 6px;
    transition: var(--transition);
    margin-left: auto;
}

.logout-icon-btn:hover {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
}