/* ============================================
   DataTwin Professional UI - Master Stylesheet
   Production-Ready Dashboard
   ============================================ */

/* Root Variables */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #8b5cf6;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --border: #e5e7eb;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1f2937;
        --bg-secondary: #111827;
        --bg-tertiary: #374151;
        --border: #4b5563;
        --text-primary: #f9fafb;
        --text-secondary: #d1d5db;
        --text-muted: #9ca3af;
    }
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.5;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
}

code {
    background-color: var(--bg-tertiary);
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-sm);
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 0.875rem;
}

/* ============================================
   Authentication Pages
   ============================================ */

.auth-body {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 1000px;
}

.auth-branding {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    padding: var(--spacing-16);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.branding-content {
    text-align: center;
}

.logo-large {
    margin-bottom: var(--spacing-8);
}

.logo-image {
    display: block;
    width: 172px;
    max-width: 100%;
    height: auto;
}

.logo-image-large {
    width: min(320px, 100%);
    margin: 0 auto;
}

.logo-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: var(--spacing-4);
}

.logo-large h1 {
    color: white;
    margin-bottom: var(--spacing-2);
}

.tagline {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-12);
}

.features-list {
    list-style: none;
    text-align: left;
}

.features-list li {
    padding: var(--spacing-3);
    opacity: 0.9;
    font-size: 0.95rem;
}

.stats-box {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-6);
    margin-top: var(--spacing-8);
    text-align: center;
}

.stat {
    padding: var(--spacing-4);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
}

.stat strong {
    display: block;
    font-size: 1.75rem;
    margin-bottom: var(--spacing-2);
}

.stat span {
    font-size: 0.875rem;
    opacity: 0.9;
}

.auth-form-wrapper {
    padding: var(--spacing-16);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.auth-form-container {
    width: 100%;
}

.auth-form-container h2 {
    margin-bottom: var(--spacing-2);
    color: var(--text-primary);
}

.form-subtitle {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-8);
}

.auth-form {
    margin-bottom: var(--spacing-8);
}

.form-group {
    margin-bottom: var(--spacing-6);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4);
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--spacing-2);
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group input:disabled {
    background-color: var(--bg-tertiary);
    cursor: not-allowed;
    opacity: 0.6;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-6);
    font-size: 0.875rem;
}

.checkbox {
    display: flex;
    align-items: center;
    cursor: pointer;
    gap: var(--spacing-2);
}

.checkbox input {
    width: auto;
    cursor: pointer;
}

.forgot-link {
    color: var(--primary);
    font-size: 0.875rem;
}

.form-divider {
    text-align: center;
    color: var(--text-muted);
    margin: var(--spacing-8) 0;
    position: relative;
}

.form-divider::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 100%;
    height: 1px;
    background: var(--border);
}

.form-divider {
    background: var(--bg-primary);
    padding: 0 var(--spacing-4);
    position: relative;
}

.password-hint {
    display: block;
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: var(--spacing-2);
}

.auth-footer {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.auth-footer a {
    color: var(--primary);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    padding: var(--spacing-3) var(--spacing-6);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    white-space: nowrap;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background-color: var(--border);
}

.btn-danger {
    background-color: var(--danger);
    color: white;
}

.btn-danger:hover {
    background-color: #dc2626;
}

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

.btn-large {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: 1rem;
}

.btn-small {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: 0.875rem;
}

.icon-btn {
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    border: none;
    background: transparent;
    font-size: 1.25rem;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.icon-btn:hover {
    background-color: var(--bg-tertiary);
}

/* ============================================
   Dashboard Layout
   ============================================ */

.dashboard-body {
    background-color: var(--bg-secondary);
}

.top-header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    padding: var(--spacing-4) var(--spacing-8);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
}

.page-title {
    margin: 0;
    font-size: 1.5rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-6);
}

.search-bar {
    flex: 1;
    max-width: 300px;
}

.search-bar input {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background-color: var(--bg-tertiary);
    transition: var(--transition);
}

.search-bar input:focus {
    outline: none;
    border-color: var(--primary);
    background-color: var(--bg-primary);
}

.header-actions {
    display: flex;
    gap: var(--spacing-4);
}

.header-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-2) var(--spacing-3);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-tertiary);
    min-width: 0;
    max-width: 260px;
}

.header-user-name {
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.dashboard-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    min-height: calc(100vh - 70px);
}

/* Sidebar */
.sidebar {
    background: var(--bg-primary);
    border-right: 1px solid var(--border);
    padding: var(--spacing-6);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 70px;
    height: calc(100vh - 70px);
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-8);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-weight: 600;
}

.sidebar-header .logo {
    min-width: 0;
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-text {
    font-size: 1.125rem;
}

.sidebar-header .logo-image {
    width: 152px;
}

.close-sidebar {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
}

.sidebar-nav {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding-right: var(--spacing-2);
    margin-bottom: var(--spacing-12);
}

.nav-section {
    margin-bottom: var(--spacing-8);
}

.nav-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: var(--spacing-4);
    padding: 0 var(--spacing-4);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    margin-bottom: var(--spacing-2);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    transition: var(--transition);
    cursor: pointer;
}

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

.nav-item.active {
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--primary);
    font-weight: 500;
}

.nav-item .icon {
    font-size: 1.25rem;
    width: 1.5rem;
    text-align: center;
}

.sidebar-footer {
    position: static;
    margin-top: auto;
    background: transparent;
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--border);
}

/* Main Content */
.main-content {
    padding: var(--spacing-8);
    overflow-y: auto;
}

.page {
    display: none;
}

.page.active {
    display: block;
    animation: fadeIn 0.3s ease-in;
}

.faq-inline-wrap {
    padding: 0;
    overflow: hidden;
}

.faq-inline-frame {
    width: 100%;
    min-height: calc(100vh - 230px);
    border: 0;
    background: transparent;
}

/* Chat */
.chatgpt-shell {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-rows: auto 1fr auto;
    min-height: calc(100vh - 180px);
    background: linear-gradient(180deg, rgba(99,102,241,0.03) 0%, transparent 25%);
}

.chat-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-4);
    border-bottom: 1px solid var(--border);
    padding: var(--spacing-4) var(--spacing-2);
}

.chat-toolbar h3 {
    font-size: 1.25rem;
    letter-spacing: 0.2px;
}

.chat-toolbar-actions {
    display: flex;
    gap: var(--spacing-2);
    align-items: center;
}

.chat-toolbar-actions select {
    min-width: 260px;
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.95rem;
}

.chat-thread {
    display: grid;
    gap: var(--spacing-4);
    padding: var(--spacing-6) var(--spacing-2);
    max-height: calc(100vh - 360px);
    overflow-y: auto;
}

.chat-empty {
    border: 1px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-8);
    background: rgba(17, 24, 39, 0.35);
}

.chat-empty h4 {
    margin-bottom: var(--spacing-2);
    font-size: 1.05rem;
}

.chat-empty p {
    margin-bottom: var(--spacing-4);
    color: var(--text-secondary);
}

.chat-message {
    display: grid;
    grid-template-columns: 34px minmax(0, 1fr);
    gap: var(--spacing-3);
    align-items: start;
}

.chat-bubble {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-4);
    background: var(--bg-primary);
    max-width: 100%;
    box-shadow: var(--shadow-sm);
}

.chat-bubble.user {
    border-left: 3px solid var(--primary);
    background: rgba(99, 102, 241, 0.08);
}

.chat-bubble.assistant {
    border-left: 3px solid var(--success);
}

.chat-avatar {
    width: 34px;
    height: 34px;
    border-radius: 999px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

.chat-avatar.assistant {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
}

.chat-role-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-2);
}

.chat-role {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.chat-time {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.chat-text {
    font-size: 0.95rem;
    line-height: 1.55;
}

.chat-explain {
    margin-bottom: var(--spacing-2);
    font-size: 0.94rem;
    line-height: 1.55;
}

.chat-sql {
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 0.85rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--spacing-3);
    margin: var(--spacing-2) 0;
    word-break: break-word;
    line-height: 1.45;
}

.chat-hints {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
    margin: var(--spacing-2) 0;
}

.chat-chip {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    padding: var(--spacing-1) var(--spacing-3);
    font-size: 0.8rem;
}

.chat-composer {
    border-top: 1px solid var(--border);
    padding: var(--spacing-4) var(--spacing-2);
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-3);
    align-items: end;
    background: var(--bg-primary);
    position: sticky;
    bottom: 0;
}

.chat-composer textarea {
    width: 100%;
    resize: vertical;
    min-height: 56px;
    max-height: 180px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: var(--spacing-3) var(--spacing-4);
    font-size: 0.95rem;
    line-height: 1.5;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page-header {
    margin-bottom: var(--spacing-12);
}

.page-header h2 {
    margin-bottom: var(--spacing-2);
}

.page-header p {
    color: var(--text-secondary);
}

.page-actions {
    margin-bottom: var(--spacing-8);
    display: flex;
    gap: var(--spacing-4);
}

/* Cards */
.card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-8);
    margin-bottom: var(--spacing-8);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-6);
    padding-bottom: var(--spacing-6);
    border-bottom: 1px solid var(--border);
}

.card-header h3 {
    margin: 0;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-12);
}

.stat-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    display: flex;
    align-items: center;
    gap: var(--spacing-6);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
}

.stat-content {
    flex: 1;
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-2);
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Tables */
.table-container {
    overflow-x: auto;
    margin: var(--spacing-6) 0;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.table thead {
    background-color: var(--bg-tertiary);
    border-bottom: 2px solid var(--border);
}

.table th {
    padding: var(--spacing-4);
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
}

.table td {
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--border);
}

.table tbody tr:hover {
    background-color: var(--bg-tertiary);
}

.empty-message {
    text-align: center;
    color: var(--text-muted);
    padding: var(--spacing-12) !important;
}

/* Grid Layout */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-8);
}

/* Modals */
.modal {
    display: flex;
    align-items: center;
    justify-content: center;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 1;
    transition: var(--transition);
}

.modal.hidden {
    display: none;
    opacity: 0;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-8);
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-muted);
}

.modal-body {
    padding: var(--spacing-8);
}

.modal-footer {
    padding: var(--spacing-8);
    border-top: 1px solid var(--border);
    display: flex;
    gap: var(--spacing-4);
    justify-content: flex-end;
}

.modal-success {
    text-align: center;
}

.modal-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-4);
}

/* Alerts */
.alert {
    padding: var(--spacing-4) var(--spacing-6);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-6);
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--warning);
    color: var(--warning);
}

.alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger);
    color: var(--danger);
}

/* Query Builder */
.query-builder {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-8);
}

.result-info {
    background: var(--bg-tertiary);
    padding: var(--spacing-6);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-6);
}

.result-stat {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-3) 0;
    border-bottom: 1px solid var(--border);
}

.result-stat:last-child {
    border-bottom: none;
}

.result-stat .label {
    font-weight: 500;
    color: var(--text-secondary);
}

.result-actions {
    display: flex;
    gap: var(--spacing-4);
    margin-top: var(--spacing-6);
}

/* Billing */
.billing-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-6);
}

.metric {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.metric-label {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.billing-breakdown {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-8);
}

.breakdown-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.breakdown-item {
    padding: var(--spacing-4);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Key Display */
.key-display {
    background: var(--bg-tertiary);
    padding: var(--spacing-6);
    border-radius: var(--radius-md);
    word-break: break-all;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-4);
}

.key-display code {
    background: transparent;
    padding: 0;
    flex: 1;
}

/* Loading Spinner */
.loading-spinner {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-4);
    z-index: 2000;
}

.loading-spinner.hidden {
    display: none;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Toasts */
.toast-container {
    position: fixed;
    top: var(--spacing-8);
    right: var(--spacing-8);
    z-index: 1001;
}

.toast {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-4) var(--spacing-6);
    margin-bottom: var(--spacing-4);
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease-out;
    max-width: 400px;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast.success {
    border-left: 4px solid var(--success);
}

.toast.error {
    border-left: 4px solid var(--danger);
}

.toast.warning {
    border-left: 4px solid var(--warning);
}

.toast.info {
    border-left: 4px solid var(--info);
}

/* Responsive */
@media (max-width: 768px) {
    .auth-container {
        grid-template-columns: 1fr;
    }

    .auth-branding {
        display: none;
    }

    .auth-form-wrapper {
        padding: var(--spacing-8);
    }

    .dashboard-layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: fixed;
        left: 0;
        top: 70px;
        height: calc(100vh - 70px);
        z-index: 99;
        transform: translateX(-100%);
        transition: var(--transition);
        width: 250px;
        border-right: 1px solid var(--border);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .sidebar-toggle {
        display: block;
    }

    .close-sidebar {
        display: block;
    }

    .search-bar {
        display: none;
    }

    .header-actions {
        gap: var(--spacing-2);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

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

    .billing-breakdown {
        grid-template-columns: 1fr;
    }

    .table {
        font-size: 0.75rem;
    }

    .table th,
    .table td {
        padding: var(--spacing-2);
    }
}

/* Utilities */
.link {
    color: var(--primary);
    cursor: pointer;
    transition: var(--transition);
}

.link:hover {
    color: var(--primary-dark);
}

.text-muted {
    color: var(--text-muted);
}

.text-center {
    text-align: center;
}

/* ============================================
   Dashboard (index.html) missing utility styles
   ============================================ */

.user-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
}

.avatar {
    width: 2rem;
    height: 2rem;
    border-radius: 9999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary);
    font-weight: 700;
    font-size: 0.8rem;
}

.user-name {
    font-weight: 600;
}

.user-role {
    font-size: 0.8rem;
}

.stat-title {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: var(--spacing-2);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-6);
}

.form-group.inline {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

textarea {
    width: 100%;
    min-height: 6rem;
    padding: var(--spacing-3) var(--spacing-4);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    resize: vertical;
}

textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

@media (max-width: 768px) {
    .form-grid {
        grid-template-columns: 1fr;
    }

    .header-user-name {
        display: none;
    }
}

/* ============================================
   Dashboard Professional Overrides (clean)
   ============================================ */

body.dashboard-body {
    min-height: 100vh;
    background: #0f1115;
    color: #e5e7eb;
}

body.dashboard-body::before {
    content: none;
}

body.dashboard-body .top-header,
body.dashboard-body .sidebar,
body.dashboard-body .card,
body.dashboard-body .modal-content,
body.dashboard-body .stat-card {
    background: #171a21 !important;
    border: 1px solid #2a2f3a !important;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}

body.dashboard-body .top-header {
    border-bottom-color: #2a2f3a !important;
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.02) !important;
}

body.dashboard-body .sidebar {
    background: #141821 !important;
    border-right-color: #2a2f3a !important;
}

body.dashboard-body .sidebar-nav::-webkit-scrollbar {
    width: 8px;
}

body.dashboard-body .sidebar-nav::-webkit-scrollbar-thumb {
    background: #3a4455;
    border-radius: 999px;
}

body.dashboard-body .sidebar-nav::-webkit-scrollbar-track {
    background: #1a1f29;
    border-radius: 999px;
}

body.dashboard-body .top-header,
body.dashboard-body .sidebar,
body.dashboard-body .main-content {
    position: relative;
    z-index: 1;
}

body.dashboard-body .card,
body.dashboard-body .stat-card {
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
}

body.dashboard-body .card:hover,
body.dashboard-body .stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 18px rgba(0, 0, 0, 0.35);
}

body.dashboard-body .page-title,
body.dashboard-body .card-header h3,
body.dashboard-body .page-header h2,
body.dashboard-body .logo-text,
body.dashboard-body .user-name {
    color: #f3f4f6 !important;
}

body.dashboard-body .page-title,
body.dashboard-body .logo-text {
    background: none;
    color: #f3f4f6 !important;
}

body.dashboard-body .text-muted,
body.dashboard-body .stat-title,
body.dashboard-body .user-role,
body.dashboard-body .metric-label,
body.dashboard-body .page-header p,
body.dashboard-body .nav-section-title {
    color: #9ca3af !important;
}

body.dashboard-body .nav-item {
    color: #d1d5db !important;
    border: 1px solid transparent;
}

body.dashboard-body .nav-item .icon {
    filter: none;
}

body.dashboard-body .nav-item:hover {
    background: #1d2330 !important;
    border-color: #2f3847;
}

body.dashboard-body .nav-item.active {
    background: rgba(16, 163, 127, 0.15) !important;
    color: #34d399 !important;
    border-color: rgba(16, 163, 127, 0.35);
    box-shadow: none;
}

body.dashboard-body .avatar {
    background: rgba(16, 163, 127, 0.15);
    color: #34d399;
    box-shadow: none;
}

body.dashboard-body .stat-value,
body.dashboard-body .metric-value {
    color: #f9fafb !important;
    text-shadow: none;
}

body.dashboard-body .btn,
body.dashboard-body .icon-btn {
    border-radius: var(--radius-md);
}

body.dashboard-body .btn-primary {
    background: #10a37f !important;
    border: none;
    color: #fff;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

body.dashboard-body .btn-primary:hover {
    filter: none;
    background: #0d8f6f !important;
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.35);
}

body.dashboard-body .btn-secondary {
    background: #222733 !important;
    border-color: #333a48 !important;
    color: #e5e7eb !important;
}

body.dashboard-body .btn-secondary:hover {
    background: #2a3140 !important;
}

body.dashboard-body input,
body.dashboard-body select,
body.dashboard-body textarea,
body.dashboard-body .search-bar input {
    background: #10141b !important;
    border: 1px solid #2e3442 !important;
    color: #f3f4f6 !important;
}

body.dashboard-body select option {
    color: #f3f4f6;
    background: #10141b;
}

body.dashboard-body input::placeholder,
body.dashboard-body textarea::placeholder {
    color: #9aa3b2 !important;
}

body.dashboard-body input:focus,
body.dashboard-body select:focus,
body.dashboard-body textarea:focus,
body.dashboard-body .search-bar input:focus {
    border-color: #10a37f !important;
    box-shadow: 0 0 0 3px rgba(16, 163, 127, 0.18) !important;
}

body.dashboard-body .table thead {
    background: #1d2330 !important;
}

body.dashboard-body .table th,
body.dashboard-body .table td {
    color: #e5e7eb !important;
    border-bottom-color: #2b3140 !important;
}

body.dashboard-body .table tbody tr:hover {
    background: #1a202b !important;
}

body.dashboard-body .key-display,
body.dashboard-body .result-info,
body.dashboard-body pre {
    background: #121720 !important;
    border: 1px solid #2a2f3a;
}

body.dashboard-body .toast {
    background: #171a21 !important;
    border: 1px solid #2a2f3a !important;
    color: #f3f4f6;
}

pre {
    background: var(--bg-tertiary);
    padding: var(--spacing-6);
    border-radius: var(--radius-md);
    overflow-x: auto;
}

pre code {
    background: transparent;
    padding: 0;
}

.hidden {
    display: none !important;
}