/*
 * Corvus Analytics Design System - Glass & Charcoal Luxury Aesthetic
 * 
 * Color Palette:
 * - Background: Clean off-white (#FAFAFA)
 * - Accent: Teal/Emerald (#2D8A8E)
 * - Text: Rich charcoal (#1A1A1A)
 * - Cards: Glass effect with backdrop blur
 * - Tab strip: Modern charcoal (#1A1A1A)
 */

/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
    /* Primary Colors */
    --color-bg: #FAFAFA;
    --color-bg-light: #FFFFFF;
    --color-accent: #2D8A8E;
    --color-accent-dark: #236568;
    --color-accent-light: #3BA5A9;
    
    /* Text Colors - minimal hierarchy, maximum readability */
    --color-text: #1A1A1A;
    --color-text-muted: #2D2D2D;
    --color-text-light: #333333;
    
    /* Tab Colors - Modern Charcoal */
    --color-tab-strip: #1A1A1A;
    --color-tab-inactive: transparent;
    --color-tab-active: #FFFFFF;
    --color-tab-text: #999999;
    --color-tab-text-active: #1A1A1A;
    
    /* Card Colors - Glass Effect */
    --color-card: rgba(255, 255, 255, 0.75);
    --color-card-border: rgba(0, 0, 0, 0.08);
    --color-card-shadow: rgba(0, 0, 0, 0.06);
    
    /* Status Colors */
    --color-danger: #C94A4A;
    --color-warning: #D4A843;
    --color-success: #4A9D6C;
    --color-info: #4A7DC9;
    
    /* Typography */
    --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Type Scale - ONLY use these sizes */
    --text-xs: 0.75rem;     /* 12px - badges, labels, metadata */
    --text-sm: 0.875rem;    /* 14px - secondary text, table cells, captions */
    --text-base: 1rem;      /* 16px - body text, form inputs */
    --text-lg: 1.25rem;     /* 20px - section headings, card titles */
    --text-xl: 1.5rem;      /* 24px - page titles */
    --text-2xl: 2rem;       /* 32px - hero KPI numbers */
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 12px;
    --radius-lg: 16px;
    
    /* Shadows - Softer & More Diffused */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 12px 24px -6px rgba(0, 0, 0, 0.08), 0 0 1px rgba(0,0,0,0.1);
    --shadow-lg: 0 20px 40px -10px rgba(0, 0, 0, 0.12);

    /* Aliases for backward compat - standardize on left-side names */
    --color-border: var(--color-card-border);
    --color-surface: var(--color-bg-light);
    --color-primary: var(--color-accent);
    --color-primary-rgb: 45, 138, 142;
    --color-bg-hover: #F0F0F0;
    --color-bg-secondary: var(--color-bg);
    --color-card-bg: var(--color-card);
    --color-text-secondary: var(--color-text-muted);
    --color-warning-bg: rgba(212, 168, 67, 0.1);
    --color-primary-bg: rgba(45, 138, 142, 0.08);
}

/* ============================================
   BASE STYLES
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background: radial-gradient(circle at 50% 30%, #FFFFFF 0%, #F0F0F0 100%);
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 600;
    line-height: 1.3;
    margin-top: 0;
    color: var(--color-text);
}

h1 {
    font-size: 2.5rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2rem;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
    font-family: var(--font-sans);
    font-weight: 600;
}

p {
    margin-top: 0;
    margin-bottom: var(--spacing-md);
}

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

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

/* ============================================
   FOLDER TABS NAVIGATION
   ============================================ */
.folder-tabs-container {
    background-color: transparent;
    border-bottom: 1px solid var(--color-card-border);
    padding: 0;
    margin: 0;
}

.folder-tabs {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 0;
    margin: 0 auto;
    list-style: none;
    gap: 0;
    max-width: 1400px;
    width: 100%;
}

.folder-tab {
    flex: 1;
    display: flex;
    justify-content: center;
}

.folder-tab a,
.folder-tab button {
    display: inline-block;
    padding: 1rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    text-decoration: none;
    color: var(--color-tab-text);
    background-color: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    border-radius: 0;
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.3s ease;
    font-family: var(--font-sans);
    width: 100%;
    text-align: center;
}

.folder-tab a:hover,
.folder-tab button:hover {
    color: var(--color-text);
    background-color: transparent;
}

.folder-tab.active a,
.folder-tab.active button {
    background-color: transparent;
    color: var(--color-text);
    border-bottom: 2px solid var(--color-accent);
}

/* ============================================
   MAIN LAYOUT
   ============================================ */
.main-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

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

.page-title {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.page-subtitle {
    font-size: 1.1rem;
    color: var(--color-text);
    margin-bottom: 0;
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background: rgba(255, 255, 255, 0.97);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

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

.card-title {
    font-family: var(--font-sans);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text);
    margin: 0;
}

/* ============================================
   OPPORTUNITY CARDS (Dashboard)
   ============================================ */
.opportunity-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.opportunity-card {
    background: #FFFFFF;
    border: 1px solid var(--color-card-border);
    border-top: 3px solid var(--color-accent);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    cursor: pointer;
}

.opportunity-card .label {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.opportunity-card .value {
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.2;
    margin-bottom: var(--spacing-xs);
}

.opportunity-card .subvalue {
    font-size: var(--text-base);
    color: var(--color-accent);
    font-weight: 600;
}

.opportunity-card.danger {
    border-top-color: var(--color-danger);
}

.opportunity-card.danger .value {
    color: var(--color-danger);
}

.opportunity-card.warning {
    border-top-color: var(--color-warning);
}

.opportunity-card.success {
    border-top-color: var(--color-success);
}

.opportunity-card.success .value {
    color: var(--color-success);
}

.opportunity-card.info {
    border-top-color: var(--color-info);
}

/* ============================================
   TOTAL OPPORTUNITY BANNER
   ============================================ */
.opportunity-banner {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    color: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.opportunity-banner .label {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    opacity: 0.9;
    margin-bottom: var(--spacing-sm);
}

.opportunity-banner .value {
    font-family: var(--font-serif);
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.opportunity-banner .subtext {
    font-size: 1rem;
    opacity: 0.9;
}

/* ============================================
   TABLES
   ============================================ */
.table-container {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

.data-table thead th {
    text-align: left;
    padding: var(--spacing-md);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text);
    border-bottom: 2px solid var(--color-card-border);
    background-color: var(--color-bg-light);
}

.data-table tbody td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-card-border);
    vertical-align: middle;
}

/* Performance: Skip rendering off-screen rows (Chrome 85+) */
.data-table tbody tr {
    content-visibility: auto;
    contain-intrinsic-size: 0 72px; /* Measured row height: ~72px */
}

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

.data-table tbody tr:last-child td {
    border-bottom: none;
}

/* Score badge in table */
.score-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.8125rem;
    font-weight: 600;
}

.score-badge.high {
    background-color: rgba(201, 74, 74, 0.15);
    color: var(--color-danger);
}

.score-badge.medium {
    background-color: rgba(212, 168, 67, 0.15);
    color: var(--color-warning);
}

.score-badge.low {
    background-color: rgba(74, 157, 108, 0.15);
    color: var(--color-success);
}

/* Status badges (Member status) */
.score-badge.status-active {
    background-color: rgba(74, 157, 108, 0.15);
    color: var(--color-success);
}

.score-badge.status-inactive,
.score-badge.status-lapsed {
    background-color: rgba(201, 74, 74, 0.15);
    color: var(--color-danger);
}

.score-badge.status-other {
    background-color: rgba(212, 168, 67, 0.15);
    color: var(--color-warning);
}

/* Payment status badges */
.score-badge.payment-paid {
    background-color: rgba(74, 157, 108, 0.15);
    color: var(--color-success);
}

.score-badge.payment-overdue {
    background-color: rgba(201, 74, 74, 0.15);
    color: var(--color-danger);
}

.score-badge.payment-pending {
    background-color: rgba(212, 168, 67, 0.15);
    color: var(--color-warning);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.15s ease;
    font-family: var(--font-sans);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-accent-light) 0%, var(--color-accent) 100%);
    color: white;
}

.btn-secondary {
    background-color: #ffffff;
    color: #2C2C2C;
    border: 1px solid var(--color-card-border);
}

.btn-secondary:hover {
    background-color: #f5f5f5;
    border-color: var(--color-accent);
    color: #2C2C2C;
    box-shadow: 0 0 8px rgba(45, 138, 142, 0.2);
}

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

.btn-danger:hover {
    background-color: #a93c3c;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
}

/* Outline variants */
.btn-outline-danger {
    background: transparent;
    color: var(--color-danger);
    border: 1px solid var(--color-danger);
}

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

/* Block variant */
.btn-block {
    display: flex;
    width: 100%;
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    font-family: var(--font-sans);
    color: var(--color-text);
    background-color: white;
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-sm);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(45, 138, 142, 0.15);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236B6B6B' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

/* ============================================
   UPLOAD ZONE
   ============================================ */
.upload-zone {
    border: 2px dashed var(--color-card-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xxl);
    text-align: center;
    background-color: var(--color-bg-light);
    cursor: pointer;
    transition: all 0.2s ease;
}

.upload-zone:hover {
    border-color: var(--color-accent);
    background-color: rgba(45, 138, 142, 0.05);
}

.upload-zone.dragover {
    border-color: var(--color-accent);
    background-color: rgba(45, 138, 142, 0.1);
}

.upload-zone-icon {
    font-size: 3rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.upload-zone-text {
    font-size: 1.125rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.upload-zone-hint {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* ============================================
   ALERTS / MESSAGES
   ============================================ */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-lg);
    font-size: 0.9375rem;
}

.alert-success {
    background-color: rgba(74, 157, 108, 0.15);
    color: var(--color-success);
    border: 1px solid rgba(74, 157, 108, 0.3);
}

.alert-danger {
    background-color: rgba(201, 74, 74, 0.15);
    color: var(--color-danger);
    border: 1px solid rgba(201, 74, 74, 0.3);
}

.alert-warning {
    background-color: rgba(212, 168, 67, 0.15);
    color: #8a6b1a;
    border: 1px solid rgba(212, 168, 67, 0.3);
}

.alert-info {
    background-color: rgba(74, 125, 201, 0.15);
    color: var(--color-info);
    border: 1px solid rgba(74, 125, 201, 0.3);
}

/* ============================================
   MEMBER DETAIL
   ============================================ */
.member-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.member-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    font-weight: 600;
    font-family: var(--font-serif);
}

.member-info h1 {
    margin-bottom: var(--spacing-xs);
}

.member-meta {
    display: flex;
    gap: var(--spacing-lg);
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

/* Signal cards in detail view */
.signal-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.signal-card {
    background-color: var(--color-bg-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
}

.signal-card .score {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.signal-card .label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text);
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: var(--spacing-xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--color-card-border);
}

.timeline-item {
    position: relative;
    padding-bottom: var(--spacing-lg);
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: calc(-1 * var(--spacing-xl) + 4px);
    top: 6px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--color-accent);
    border: 2px solid var(--color-card);
}

.timeline-date {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

.timeline-content {
    font-size: 0.9375rem;
}

/* ============================================
   EMPTY STATES
   ============================================ */
.empty-state {
    text-align: center;
    padding: var(--spacing-xxl);
    color: var(--color-text-muted);
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.5;
}

.empty-state-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.empty-state-text {
    font-size: 1rem;
    margin-bottom: var(--spacing-lg);
}

/* ============================================
   UTILITIES
   ============================================ */
.flex {
    display: flex;
}

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

.gap-sm {
    gap: var(--spacing-sm);
}

.gap-md {
    gap: var(--spacing-md);
}

.gap-lg {
    gap: var(--spacing-lg);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

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

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

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .folder-tabs {
        overflow-x: auto;
        padding-left: var(--spacing-md);
    }
    
    .folder-tab a,
    .folder-tab button {
        padding: 0.5rem 1rem;
        font-size: 0.6875rem;
    }
    
    .main-container {
        padding: var(--spacing-md);
    }
    
    .page-title {
        font-size: 1.75rem;
    }
    
    .opportunity-grid {
        grid-template-columns: 1fr;
    }
    
    .opportunity-banner .value {
        font-size: 2.5rem;
    }
    
    .member-header {
        flex-direction: column;
        text-align: center;
    }
    
    .member-meta {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* ============================================
   LOGO / BRANDING
   ============================================ */
.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--color-text);
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 0.875rem;
    font-family: var(--font-serif);
}

.logo-text {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 600;
}

/* Header bar above tabs */
.header-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    max-width: 1400px;
    margin: 0 auto;
}

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

.user-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--color-text);
}

/* ============================================
   LOADING STATES
   ============================================ */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-card-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-spinner.lg {
    width: 40px;
    height: 40px;
    border-width: 3px;
}

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

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(245, 241, 235, 0.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-text {
    margin-top: var(--spacing-md);
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

.btn.loading {
    position: relative;
    pointer-events: none;
    color: transparent;
}

.btn.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-top: -8px;
    margin-left: -8px;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ============================================
   EMPTY STATES
   ============================================ */
.empty-state {
    text-align: center;
    padding: var(--spacing-xxl);
    color: var(--color-text-muted);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.empty-state-title {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.empty-state-text {
    font-size: 0.9375rem;
    margin-bottom: var(--spacing-lg);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   ERROR STATES
   ============================================ */
.error-message {
    background: rgba(201, 74, 74, 0.1);
    border: 1px solid var(--color-danger);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    color: var(--color-danger);
    margin-bottom: var(--spacing-md);
}

.error-message strong {
    display: block;
    margin-bottom: var(--spacing-xs);
}

/* ============================================
   MOBILE SIDEBAR TOGGLE
   ============================================ */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    padding: var(--spacing-sm);
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--color-text);
}

/* ============================================
   ENHANCED RESPONSIVE - TABLET (768px)
   ============================================ */
@media (max-width: 992px) {
    .row {
        flex-direction: column;
    }
    
    .col-lg-4, .col-lg-5, .col-lg-7, .col-lg-8 {
        width: 100%;
        max-width: 100%;
    }
    
    .dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stat-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   ENHANCED RESPONSIVE - MOBILE (768px)
   ============================================ */
@media (max-width: 768px) {
    /* Mobile Menu */
    .mobile-menu-toggle {
        display: block;
    }
    
    .folder-tabs-nav {
        display: none;
    }
    
    .folder-tabs-nav.open {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-card);
        z-index: 1000;
        padding: var(--spacing-xl);
    }
    
    .folder-tabs-nav.open .folder-tabs {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    /* Grid adjustments */
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-grid {
        grid-template-columns: 1fr;
    }
    
    /* Header */
    .header-bar {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    /* Main content */
    .main-container {
        padding: var(--spacing-sm);
    }
    
    /* Cards */
    .card {
        border-radius: var(--radius-md);
    }
    
    .card-header {
        padding: var(--spacing-md);
    }
    
    .card-body, .card-content {
        padding: var(--spacing-md);
    }
    
    /* Tables */
    .table-responsive {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .table {
        min-width: 600px;
    }
    
    /* Typography */
    .page-title {
        font-size: 1.5rem;
    }
    
    .page-subtitle {
        font-size: 0.875rem;
    }
    
    /* Buttons */
    .btn-stack {
        flex-direction: column;
    }
    
    .btn-stack .btn {
        width: 100%;
    }
    
    /* Forms */
    .form-group {
        margin-bottom: var(--spacing-md);
    }
}

/* ============================================
   ENHANCED RESPONSIVE - SMALL MOBILE (480px)
   ============================================ */
@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .page-title {
        font-size: 1.375rem;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
    
    .opportunity-banner .value {
        font-size: 2rem;
    }
    
    /* Hide less important columns on small screens */
    .table .hide-mobile {
        display: none;
    }
    
    /* Stack horizontal items */
    .flex-between {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: flex-start;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    /* Hide interactive elements */
    .folder-tabs-nav,
    .header-bar,
    .header-bar-wrapper,
    .folder-tabs-container,
    .btn,
    .no-print,
    .print-button,
    .cookie-banner {
        display: none !important;
    }
    
    body {
        background: white !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    /* Glass panels for marketing pages */
    .glass-panel {
        box-shadow: none !important;
        border: 1px solid #ddd;
        page-break-inside: avoid;
    }
    
    /* Page break utilities */
    .page-break-before {
        page-break-before: always;
    }
    
    .page-break-after {
        page-break-after: always;
    }
    
    .avoid-break {
        page-break-inside: avoid;
    }
    
    /* Ensure backgrounds print */
    .stat-block,
    .security-item,
    .emphasis-block {
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    
    /* Remove shadows from screenshots */
    .screenshot {
        box-shadow: none !important;
    }
}

/* Typography utility classes */
.text-xs { font-size: var(--text-xs) !important; }
.text-sm { font-size: var(--text-sm) !important; }
.text-base { font-size: var(--text-base) !important; }
.text-lg { font-size: var(--text-lg) !important; }
.text-xl { font-size: var(--text-xl) !important; }
.text-2xl { font-size: var(--text-2xl) !important; }

/* ============================================
   PREMIUM MICRO-INTERACTIONS
   Apple-inspired weighted, tactile feel
   ============================================ */

/* --- Buttons --- */
.btn,
.btn-primary,
.btn-secondary,
.btn-danger,
.btn-outline-danger {
    transition: transform 0.15s cubic-bezier(0.2, 0, 0, 1),
                box-shadow 0.15s cubic-bezier(0.2, 0, 0, 1),
                background-color 0.15s ease;
}

.btn:hover,
.btn-primary:hover,
.btn-secondary:hover,
.btn-danger:hover,
.btn-outline-danger:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.btn:active,
.btn-primary:active,
.btn-secondary:active,
.btn-danger:active,
.btn-outline-danger:active {
    transform: translateY(0px) scale(0.98);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
    transition-duration: 0.05s;
}

/* --- Cards and Tiles --- */
.card,
.opportunity-card,
.kpi-tile {
    transition: transform 0.25s cubic-bezier(0.2, 0, 0, 1),
                box-shadow 0.25s cubic-bezier(0.2, 0, 0, 1);
}

.card:hover,
.opportunity-card:hover,
.kpi-tile:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px -8px rgba(0, 0, 0, 0.12),
                0 0 1px rgba(0, 0, 0, 0.08);
}

/* --- Table rows --- */
.data-table tbody tr {
    transition: background-color 0.15s ease;
}

.data-table tbody tr:hover {
    background-color: rgba(45, 138, 142, 0.03);
}

/* --- Links within cards --- */
.card a,
.opportunity-card a {
    transition: color 0.15s ease;
}

/* --- Form inputs --- */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
input[type="number"],
select,
textarea {
    transition: border-color 0.2s ease,
                box-shadow 0.2s ease;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(45, 138, 142, 0.12);
    outline: none;
}

/* --- Score badges / status pills --- */
.score-badge {
    transition: transform 0.15s ease;
}

.score-badge:hover {
    transform: scale(1.05);
}

/* --- Smooth page-level transitions --- */
.main-container {
    animation: fadeInUp 0.3s cubic-bezier(0.2, 0, 0, 1);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}