/*
 * IEPI Auction Web App
 * Swiss Bank Style - Clean, Minimal, Professional
 * Color Palette: Black, Dark Blue, White, Gray accents
 */

/* ============================================================================
   CSS VARIABLES
   ============================================================================ */

:root {
    /* Primary Colors */
    --primary-black: #0a0a0a;
    --primary-blue: #1a365d;
    --primary-blue-light: #2c5282;
    --primary-blue-dark: #0d1b2a;

    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;

    /* Accent Colors */
    --accent-blue: #3182ce;
    --accent-green: #38a169;
    --accent-red: #e53e3e;
    --accent-gold: #d69e2e;

    /* Functional Colors */
    --success: #38a169;
    --warning: #d69e2e;
    --error: #e53e3e;
    --info: #3182ce;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}


/* ============================================================================
   BASE STYLES
   ============================================================================ */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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


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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}


/* ============================================================================
   NAVIGATION
   ============================================================================ */

.nav {
    background: var(--primary-black);
    padding: var(--space-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.nav-logo {
    color: var(--white);
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.nav-logo span {
    color: var(--accent-blue);
}

.nav-links {
    display: flex;
    gap: var(--space-xl);
    list-style: none;
}

.nav-links a {
    color: var(--gray-300);
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: color var(--transition-fast);
}

.nav-links a:hover {
    color: var(--white);
}

/* Navigation Dropdowns */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-dropdown-toggle::after {
    content: '';
    border: 4px solid transparent;
    border-top-color: currentColor;
    margin-top: 2px;
    transition: transform var(--transition-fast);
}

.nav-dropdown:hover .nav-dropdown-toggle::after {
    transform: rotate(180deg);
}

.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gray-900);
    border: 1px solid var(--gray-700);
    border-radius: var(--radius-md);
    padding: var(--space-sm) 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: 200;
    margin-top: var(--space-sm);
    list-style: none;
    box-shadow: var(--shadow-xl);
}

.nav-dropdown:hover .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
}

.nav-dropdown-menu li {
    margin: 0;
}

.nav-dropdown-menu a {
    display: block;
    padding: var(--space-sm) var(--space-lg);
    color: var(--gray-300);
    font-size: 0.8125rem;
    text-transform: none;
    letter-spacing: normal;
    transition: all var(--transition-fast);
}

.nav-dropdown-menu a:hover {
    background: var(--gray-800);
    color: var(--white);
}


/* ============================================================================
   WELCOME PAGE
   ============================================================================ */

.hero {
    min-height: calc(100vh - 60px);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-black) 0%, var(--primary-blue-dark) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(49, 130, 206, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(49, 130, 206, 0.08) 0%, transparent 50%);
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: var(--space-2xl);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
}

.hero-title span {
    color: var(--accent-blue);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--gray-400);
    margin-bottom: var(--space-2xl);
    line-height: 1.7;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-3xl);
    margin-bottom: var(--space-2xl);
    padding: var(--space-xl) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.hero-stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white);
    font-feature-settings: 'tnum';
}

.hero-stat-label {
    font-size: 0.75rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: var(--space-xs);
}


/* ============================================================================
   BUTTONS
   ============================================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.btn-primary {
    background: var(--accent-blue);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--primary-blue-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}

.btn-secondary:hover {
    background: var(--gray-200);
    border-color: var(--gray-400);
}

.btn-dark {
    background: var(--primary-black);
    color: var(--white);
}

.btn-dark:hover {
    background: var(--gray-800);
}

.btn-outline {
    background: transparent;
    color: var(--primary-blue);
    border: 1px solid var(--primary-blue);
}

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

.btn-lg {
    padding: var(--space-lg) var(--space-2xl);
    font-size: 1rem;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 50%;
}


/* ============================================================================
   EXAMPLE SELECTION PAGE
   ============================================================================ */

.page-header {
    background: var(--primary-black);
    padding: var(--space-3xl) 0;
    text-align: center;
}

.page-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--space-sm);
}

.page-subtitle {
    font-size: 1rem;
    color: var(--gray-400);
}

.examples-section {
    padding: var(--space-3xl) 0;
}

.section-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-lg);
}

.examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-3xl);
}

.example-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    transition: all var(--transition-normal);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.example-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-blue);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-normal);
}

.example-card:hover {
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.example-card:hover::before {
    transform: scaleX(1);
}

.example-card-badge {
    display: inline-block;
    font-size: 0.625rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
}

.badge-basic {
    background: var(--gray-100);
    color: var(--gray-600);
}

.badge-intermediate {
    background: rgba(49, 130, 206, 0.1);
    color: var(--accent-blue);
}

.badge-advanced {
    background: rgba(214, 158, 46, 0.1);
    color: var(--accent-gold);
}

.badge-expert {
    background: rgba(26, 54, 93, 0.1);
    color: var(--primary-blue);
}

.example-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-sm);
}

.example-card-description {
    font-size: 0.875rem;
    color: var(--gray-600);
    line-height: 1.6;
    margin-bottom: var(--space-lg);
}

.example-card-meta {
    display: flex;
    gap: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid var(--gray-100);
}

.meta-item {
    display: flex;
    flex-direction: column;
}

.meta-label {
    font-size: 0.625rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.meta-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-800);
}

.custom-card {
    background: var(--gray-50);
    border-style: dashed;
}

.custom-card:hover {
    background: var(--white);
}


/* ============================================================================
   INPUT REVIEW PAGE
   ============================================================================ */

.input-section {
    padding: var(--space-2xl) 0;
}

.input-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
}

@media (max-width: 900px) {
    .input-grid {
        grid-template-columns: 1fr;
    }
}

.input-panel {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.input-panel-full {
    grid-column: 1 / -1;
}

.panel-header {
    background: var(--gray-50);
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.panel-content {
    padding: var(--space-lg);
}


/* ============================================================================
   TABLES
   ============================================================================ */

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

.data-table th {
    text-align: left;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.625rem;
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--gray-200);
    background: var(--gray-50);
}

.data-table td {
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--gray-100);
    color: var(--gray-700);
}

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

.data-table tr:hover td {
    background: var(--gray-50);
}

.data-table .number {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    text-align: center;
}

.data-table .unit-id {
    font-weight: 600;
    color: var(--gray-900);
}

.fuel-badge {
    display: inline-block;
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 2px 6px;
    border-radius: 3px;
}

.fuel-gas { background: rgba(49, 130, 206, 0.1); color: var(--accent-blue); }
.fuel-coal { background: rgba(64, 64, 64, 0.1); color: var(--gray-700); }
.fuel-renewable { background: rgba(56, 161, 105, 0.1); color: var(--accent-green); }


/* ============================================================================
   PARAMETERS DISPLAY
   ============================================================================ */

.params-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-md);
}

.param-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--gray-100);
}

.param-item:last-child {
    border-bottom: none;
}

.param-label {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.param-value {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-900);
}


/* ============================================================================
   CHARTS
   ============================================================================ */

.chart-container {
    position: relative;
    height: 300px;
    padding: var(--space-md);
    overflow: hidden;
}

.chart-container-lg {
    height: 400px;
    overflow: hidden;
}


/* ============================================================================
   RESULTS PAGE
   ============================================================================ */

.results-header {
    background: var(--primary-black);
    padding: var(--space-2xl) 0;
}

.results-title-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
}

.results-status {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-optimal { background: var(--accent-green); }
.status-suboptimal { background: var(--accent-gold); }
.status-error { background: var(--accent-red); }

.status-text {
    font-size: 0.75rem;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-md);
}

.summary-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    text-align: center;
}

.summary-card-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--white);
    font-family: var(--font-mono);
    margin-bottom: var(--space-xs);
}

.summary-card-label {
    font-size: 0.625rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}


/* ============================================================================
   TABS
   ============================================================================ */

.tabs-container {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    margin: var(--space-xl) 0;
    overflow: hidden;
}

.tabs-header {
    display: flex;
    border-bottom: 1px solid var(--gray-200);
    background: var(--gray-50);
    overflow-x: auto;
}

.tab-btn {
    padding: var(--space-md) var(--space-lg);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: none;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    position: relative;
}

.tab-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-blue);
    transform: scaleX(0);
    transition: transform var(--transition-fast);
}

.tab-btn:hover {
    color: var(--gray-700);
    background: rgba(0, 0, 0, 0.02);
}

.tab-btn.active {
    color: var(--primary-blue);
}

.tab-btn.active::after {
    transform: scaleX(1);
}

.tab-content {
    padding: var(--space-xl);
    display: none;
}

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


/* ============================================================================
   LOADING STATE
   ============================================================================ */

.loading-container {
    min-height: 60vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-3xl);
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--gray-200);
    border-top-color: var(--primary-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--space-xl);
}

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

.loading-text {
    font-size: 1rem;
    color: var(--gray-600);
    margin-bottom: var(--space-md);
}

.loading-step {
    font-size: 0.75rem;
    color: var(--gray-500);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.loading-step-check {
    color: var(--accent-green);
}

.progress-bar {
    width: 300px;
    height: 4px;
    background: var(--gray-200);
    border-radius: 2px;
    overflow: hidden;
    margin-top: var(--space-lg);
}

.progress-bar-fill {
    height: 100%;
    background: var(--primary-blue);
    border-radius: 2px;
    transition: width var(--transition-slow);
}


/* ============================================================================
   ACTION BAR
   ============================================================================ */

.action-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg) 0;
    margin-top: var(--space-xl);
    border-top: 1px solid var(--gray-200);
}

.action-bar-left {
    display: flex;
    gap: var(--space-md);
}

.action-bar-right {
    display: flex;
    gap: var(--space-md);
}


/* ============================================================================
   FOOTER
   ============================================================================ */

.footer {
    background: var(--primary-black);
    padding: var(--space-xl) 0;
    margin-top: var(--space-3xl);
}

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

.footer-text {
    font-size: 0.75rem;
    color: var(--gray-500);
}


/* ============================================================================
   GENERATION MIX BAR
   ============================================================================ */

.gen-mix-bar {
    display: flex;
    height: 32px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: var(--space-md);
}

.gen-mix-segment {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.625rem;
    font-weight: 600;
    color: var(--white);
    transition: all var(--transition-fast);
}

.gen-mix-segment:hover {
    filter: brightness(1.1);
}

.gen-gas { background: var(--accent-blue); }
.gen-coal { background: var(--gray-600); }
.gen-renewable { background: var(--accent-green); }

.gen-mix-legend {
    display: flex;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.75rem;
    color: var(--gray-600);
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 2px;
}


/* ============================================================================
   UTILITIES
   ============================================================================ */

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--gray-500); }
.text-success { color: var(--accent-green); }
.text-warning { color: var(--accent-gold); }
.text-error { color: var(--accent-red); }
.font-mono { font-family: var(--font-mono); }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }
.hidden { display: none; }


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

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .summary-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .tabs-header {
        flex-wrap: nowrap;
    }

    .tab-btn {
        padding: var(--space-sm) var(--space-md);
        font-size: 0.625rem;
    }
}


/* ============================================================================
   DATA PAGES (Forecast, Price Index)
   ============================================================================ */

.data-page-header {
    background: linear-gradient(135deg, var(--primary-black) 0%, var(--primary-blue-dark) 100%);
    padding: var(--space-3xl) 0;
}

.data-page-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--space-sm);
}

.data-page-subtitle {
    font-size: 1.125rem;
    color: var(--gray-400);
    max-width: 600px;
}

.data-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
    padding: var(--space-2xl) 0;
}

@media (max-width: 900px) {
    .data-grid {
        grid-template-columns: 1fr;
    }
}

.data-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.data-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-blue);
}

.data-card-header {
    background: var(--gray-50);
    padding: var(--space-lg);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.data-card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-800);
}

.data-card-badge {
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    background: rgba(49, 130, 206, 0.1);
    color: var(--accent-blue);
}

.data-card-body {
    padding: var(--space-lg);
}

.data-card-chart {
    height: 250px;
    position: relative;
}

.data-card-stats {
    display: flex;
    gap: var(--space-lg);
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid var(--gray-100);
}

.data-stat {
    text-align: center;
    flex: 1;
}

.data-stat-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    font-family: var(--font-mono);
}

.data-stat-label {
    font-size: 0.625rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 2px;
}

/* Data card link variant */
a.data-card-link {
    text-decoration: none;
    display: block;
    cursor: pointer;
}

a.data-card-link:hover {
    transform: translateY(-2px);
}

.data-card-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    color: var(--gray-400);
    transition: color var(--transition-normal);
}

.data-card-placeholder svg {
    stroke: var(--accent-blue);
    opacity: 0.6;
    transition: opacity var(--transition-normal);
}

.data-card-placeholder span {
    font-size: 0.875rem;
    color: var(--gray-500);
}

a.data-card-link:hover .data-card-placeholder svg {
    opacity: 1;
}

a.data-card-link:hover .data-card-placeholder span {
    color: var(--accent-blue);
}


/* ============================================================================
   MONTE CARLO / WHAT-IF PAGES
   ============================================================================ */

.simulator-layout {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: var(--space-xl);
    padding: var(--space-2xl) 0;
    min-height: calc(100vh - 400px);
}

@media (max-width: 1100px) {
    .simulator-layout {
        grid-template-columns: 1fr;
    }
}

.simulator-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.simulator-panel {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.simulator-panel-header {
    background: var(--primary-black);
    padding: var(--space-md) var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.simulator-panel-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--white);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.simulator-panel-body {
    padding: var(--space-lg);
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.form-input,
.form-select {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.875rem;
    font-family: var(--font-sans);
    color: var(--gray-800);
    background: var(--white);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

.form-input-group {
    display: flex;
    gap: var(--space-sm);
}

.form-input-group .form-input {
    flex: 1;
}

.form-input-unit {
    display: flex;
    align-items: center;
    padding: 0 var(--space-md);
    font-size: 0.75rem;
    color: var(--gray-500);
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    border-left: none;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.form-input:has(+ .form-input-unit) {
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.form-range {
    width: 100%;
    margin: var(--space-sm) 0;
}

.form-range-values {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--gray-500);
    font-family: var(--font-mono);
}

.simulator-results {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.results-summary {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
}

@media (max-width: 768px) {
    .results-summary {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

.result-stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    font-family: var(--font-mono);
}

.result-stat-label {
    font-size: 0.625rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 4px;
}

.results-chart-area {
    padding: var(--space-xl);
}

.chart-container-xl {
    height: 500px;
    overflow: hidden;
}

.distribution-chart {
    height: 300px;
    overflow: hidden;
}


/* ============================================================================
   KNOWN UNITS TABLE
   ============================================================================ */

.known-units-table {
    max-height: 300px;
    overflow-y: auto;
}

.known-units-table .data-table {
    font-size: 0.75rem;
}

.known-units-table .data-table th,
.known-units-table .data-table td {
    padding: var(--space-xs) var(--space-sm);
}


/* ============================================================================
   PROBABILITY DISTRIBUTION
   ============================================================================ */

.probability-display {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--gray-50);
    border-radius: var(--radius-md);
}

.probability-bar {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.probability-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--gray-600);
    width: 80px;
}

.probability-track {
    flex: 1;
    height: 24px;
    background: var(--gray-200);
    border-radius: var(--radius-sm);
    overflow: hidden;
    position: relative;
}

.probability-fill {
    height: 100%;
    border-radius: var(--radius-sm);
    transition: width var(--transition-slow);
}

.probability-fill.win {
    background: var(--accent-green);
}

.probability-fill.lose {
    background: var(--accent-red);
}

.probability-fill.partial {
    background: var(--accent-gold);
}

.probability-value {
    font-size: 0.875rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--gray-800);
    width: 50px;
    text-align: right;
}


/* ============================================================================
   SCENARIO SELECTOR (What-If)
   ============================================================================ */

.scenario-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.scenario-chip {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--gray-600);
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    border-radius: 20px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.scenario-chip:hover {
    background: var(--gray-200);
    border-color: var(--gray-300);
}

.scenario-chip.active {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
    color: var(--white);
}


/* ============================================================================
   COMPARISON TABLES
   ============================================================================ */

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
}

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

.comparison-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.comparison-card.highlight {
    border-color: var(--accent-green);
    box-shadow: 0 0 0 2px rgba(56, 161, 105, 0.1);
}

.comparison-header {
    padding: var(--space-md) var(--space-lg);
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.comparison-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-800);
}

.comparison-badge {
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
}

.comparison-badge.better {
    background: rgba(56, 161, 105, 0.1);
    color: var(--accent-green);
}

.comparison-badge.worse {
    background: rgba(229, 62, 62, 0.1);
    color: var(--accent-red);
}

.comparison-body {
    padding: var(--space-lg);
}


/* ============================================================================
   CHART MODAL (Lightbox)
   ============================================================================ */

.chart-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 10, 10, 0.9);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.chart-modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.chart-modal {
    background: var(--white);
    border-radius: var(--radius-lg);
    width: 90vw;
    max-width: 1200px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

.chart-modal-overlay.active .chart-modal {
    transform: scale(1);
}

.chart-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--gray-200);
}

.chart-modal-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-800);
}

.chart-modal-close {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--gray-100);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-600);
    transition: all var(--transition-fast);
}

.chart-modal-close:hover {
    background: var(--gray-200);
    color: var(--gray-800);
}

.chart-modal-body {
    padding: var(--space-xl);
    flex: 1;
    min-height: 0;
}

.chart-modal-canvas-container {
    height: 60vh;
    position: relative;
}

/* Clickable chart indicator */
.data-card-chart {
    cursor: pointer;
    position: relative;
}

.data-card-chart::after {
    content: '';
    position: absolute;
    top: 8px;
    right: 8px;
    width: 24px;
    height: 24px;
    background: var(--gray-100);
    border-radius: var(--radius-sm);
    opacity: 0;
    transition: opacity var(--transition-fast);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23525252' stroke-width='2'%3E%3Cpath d='M15 3h6v6M9 21H3v-6M21 3l-7 7M3 21l7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
}

.data-card-chart:hover::after {
    opacity: 1;
}


/* ============================================================================
   DEMAND ANALYTICS DASHBOARD
   ============================================================================ */

/* Analytics Stats Bar */
.analytics-stats-bar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--gray-50);
    border-bottom: 1px solid var(--gray-200);
}

.analytics-stat {
    text-align: center;
    padding: var(--space-sm) 0;
}

.analytics-stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    font-family: var(--font-mono);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
}

.analytics-stat-label {
    font-size: 0.625rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 4px;
}

/* Trend Indicators */
.trend-indicator {
    display: inline-flex;
    align-items: center;
    font-size: 0.75rem;
    font-weight: 600;
}

.trend-up {
    color: var(--accent-green);
}

.trend-down {
    color: var(--accent-red);
}

.trend-stable {
    color: var(--gray-500);
}

.trend-indicator svg {
    width: 14px;
    height: 14px;
}

/* Insight Cards */
.insight-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
}

.insight-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 1px solid var(--gray-100);
}

.insight-card-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-700);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.insight-card-badge {
    font-size: 0.625rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 10px;
}

.badge-success {
    background: rgba(56, 161, 105, 0.1);
    color: var(--accent-green);
}

.badge-warning {
    background: rgba(214, 158, 46, 0.1);
    color: var(--accent-gold);
}

.badge-info {
    background: rgba(49, 130, 206, 0.1);
    color: var(--accent-blue);
}

.insight-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--gray-100);
}

.insight-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.insight-label {
    font-size: 0.8125rem;
    color: var(--gray-600);
}

.insight-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-900);
    font-family: var(--font-mono);
}

/* Bidding Insights Panel */
.bidding-insight-panel {
    background: linear-gradient(135deg, var(--primary-blue-dark) 0%, var(--primary-blue) 100%);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    color: var(--white);
}

.bidding-insight-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
    opacity: 0.8;
}

.bidding-insight-item {
    display: flex;
    justify-content: space-between;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.bidding-insight-item:last-child {
    border-bottom: none;
}

.bidding-insight-label {
    font-size: 0.8125rem;
    opacity: 0.8;
}

.bidding-insight-value {
    font-size: 0.875rem;
    font-weight: 600;
    font-family: var(--font-mono);
}

/* Date Filter Panel */
.date-filter-panel {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin-bottom: var(--space-md);
}

.date-filter-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-700);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
}

.date-presets {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
    margin-bottom: var(--space-lg);
}

.date-preset-btn {
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--gray-600);
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.date-preset-btn:hover {
    background: var(--gray-200);
    border-color: var(--gray-300);
}

.date-preset-btn.active {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
    color: var(--white);
}

.date-custom-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.date-input-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.date-input-label {
    font-size: 0.6875rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.date-input {
    padding: var(--space-sm);
    font-size: 0.8125rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    color: var(--gray-800);
}

.date-input:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 2px rgba(26, 54, 93, 0.1);
}

/* Day Type and Season Filters */
.filter-section {
    margin-bottom: var(--space-md);
}

.filter-label {
    font-size: 0.6875rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.03em;
    margin-bottom: var(--space-sm);
    display: block;
}

.filter-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.filter-chip {
    padding: 4px 10px;
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--gray-600);
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-chip:hover {
    background: var(--gray-200);
}

.filter-chip.active {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
    color: var(--white);
}

/* Apply Filters Button */
.apply-filters-btn {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--white);
    background: var(--primary-blue);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.apply-filters-btn:hover {
    background: var(--primary-blue-light);
}

.apply-filters-btn:disabled {
    background: var(--gray-400);
    cursor: not-allowed;
}

/* Chart Tabs */
.chart-tabs {
    display: flex;
    border-bottom: 1px solid var(--gray-200);
    background: var(--gray-50);
    overflow-x: auto;
}

.chart-tab {
    padding: var(--space-md) var(--space-lg);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-500);
    background: none;
    border: none;
    cursor: pointer;
    white-space: nowrap;
    position: relative;
    transition: color var(--transition-fast);
}

.chart-tab:hover {
    color: var(--gray-700);
}

.chart-tab.active {
    color: var(--primary-blue);
}

.chart-tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-blue);
}

.chart-panel {
    display: none;
    padding: var(--space-lg);
}

.chart-panel.active {
    display: block;
}

/* Chart Title with Description */
.chart-title-bar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-lg);
}

.chart-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: var(--space-xs);
}

.chart-description {
    font-size: 0.8125rem;
    color: var(--gray-500);
}

/* Responsive Analytics Layout */
@media (max-width: 1100px) {
    .simulator-layout {
        grid-template-columns: 1fr;
    }

    .simulator-sidebar {
        order: 1;
    }

    .simulator-results {
        order: 0;
    }
}

@media (max-width: 768px) {
    .analytics-stats-bar {
        grid-template-columns: repeat(2, 1fr);
    }

    .date-custom-inputs {
        grid-template-columns: 1fr;
    }
}


/* ============================================================================
   REDESIGN COMPONENTS (2026)
   Bilingual layout, new page patterns, and updated components
   ============================================================================ */

/* --- Bilingual Layout --- */

.bilingual {
    display: flex;
    gap: var(--space-2xl);
    align-items: flex-start;
}

.bilingual-en {
    flex: 1;
    text-align: left;
    direction: ltr;
}

.bilingual-he {
    flex: 1;
    text-align: right;
    direction: rtl;
    font-family: 'Segoe UI', 'Arial Hebrew', 'Noto Sans Hebrew', sans-serif;
    color: var(--gray-600);
}

.bilingual-he h1,
.bilingual-he h2,
.bilingual-he h3 {
    color: var(--gray-700);
}

.hero .bilingual {
    justify-content: center;
}

.hero .bilingual-en {
    text-align: left;
}

.hero .bilingual-he {
    color: var(--gray-400);
}

.hero .bilingual-he h1 {
    color: var(--gray-300);
}

.hero .bilingual-he p {
    color: var(--gray-500);
}

.page-header-v2 {
    background: var(--primary-black);
    padding: var(--space-3xl) 0;
    margin-bottom: var(--space-2xl);
    text-align: left;
}

.page-header-v2 h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: -0.02em;
    margin-bottom: var(--space-sm);
}

.page-header-v2 p {
    font-size: 1.125rem;
    color: var(--gray-400);
    max-width: 600px;
    line-height: 1.7;
}

.page-header-v2 .bilingual-he {
    color: rgba(255, 255, 255, 0.7);
}

.page-header-v2 .bilingual-he h1,
.page-header-v2 .bilingual-he h2 {
    color: rgba(255, 255, 255, 0.85);
}

.page-header-v2 .bilingual-he p {
    color: rgba(255, 255, 255, 0.6);
}

/* --- Breadcrumbs --- */

.breadcrumbs {
    padding: var(--space-md) 0;
    font-size: 0.8125rem;
    color: var(--gray-500);
}

.breadcrumbs a {
    color: var(--gray-500);
}

.breadcrumbs a:hover {
    color: var(--accent-blue);
}

.breadcrumbs span {
    margin: 0 var(--space-sm);
    color: var(--gray-400);
}

/* --- Section Blocks (How It Works page) --- */

.section-block {
    padding: var(--space-3xl) 0;
    border-bottom: 1px solid var(--gray-200);
}

.section-block:last-of-type {
    border-bottom: none;
}

.section-block h2 {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--gray-500);
    margin-bottom: var(--space-sm);
}

.section-block h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-md);
}

.section-content {
    display: flex;
    gap: var(--space-2xl);
    align-items: flex-start;
}

.section-text {
    flex: 1;
}

.section-visual {
    flex: 1;
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-500);
    font-size: 0.875rem;
    text-align: center;
}

/* --- Expandable Math Button --- */

.expand-math {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm);
    color: var(--gray-600);
    font-size: 0.8125rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.expand-math:hover {
    background: var(--gray-200);
    color: var(--gray-800);
}

/* --- Path Cards (3-column) --- */

.paths-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    margin-top: var(--space-xl);
}

.path-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.path-card:hover {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.path-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-sm);
}

.path-card p {
    color: var(--gray-600);
    font-size: 0.9375rem;
    line-height: 1.6;
    flex: 1;
}

.path-card .btn {
    margin-top: var(--space-lg);
    align-self: flex-start;
}

/* --- Example Cards (v2) --- */

.example-card-v2 {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    margin-bottom: var(--space-lg);
    transition: all var(--transition-normal);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-xl);
}

.example-card-v2:hover {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-md);
}

.example-card-v2 .example-card-content {
    flex: 1;
}

.example-card-v2 .example-card-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.example-card-v2 .example-card-header h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
}

.example-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 999px;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--gray-100);
    color: var(--gray-600);
    border: 1px solid var(--gray-200);
}

.example-badge.noga {
    background: #ebf4ff;
    color: var(--primary-blue);
    border-color: #bee3f8;
}

.example-question {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-500);
    margin-bottom: var(--space-xs);
}

.example-question + p {
    font-size: 0.9375rem;
    color: var(--gray-800);
    font-style: italic;
    margin-bottom: var(--space-md);
}

.example-learn {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-500);
    margin-bottom: var(--space-xs);
}

.example-learn + p {
    font-size: 0.9375rem;
    color: var(--gray-700);
    margin-bottom: var(--space-md);
    line-height: 1.6;
}

.concept-tags {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.concept-tag {
    display: inline-block;
    padding: 2px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--gray-50);
    color: var(--gray-600);
    border: 1px solid var(--gray-200);
    font-family: var(--font-mono);
}

.example-card-action {
    display: flex;
    align-items: center;
    align-self: center;
}

/* --- Callout Boxes --- */

.callout {
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-xl);
}

.callout-blue {
    background: #ebf8ff;
    border: 1px solid #bee3f8;
    border-left: 4px solid var(--accent-blue);
}

.callout-gold {
    background: #fefcbf;
    border: 1px solid #f6e05e;
    border-left: 4px solid var(--accent-gold);
}

.callout h4 {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--primary-blue);
    margin-bottom: var(--space-sm);
}

.callout p {
    font-size: 0.9375rem;
    color: var(--gray-700);
    line-height: 1.7;
}

.callout.bilingual-callout {
    display: flex;
    gap: var(--space-xl);
}

.callout.bilingual-callout .callout-en {
    flex: 1;
}

.callout.bilingual-callout .callout-he {
    flex: 1;
    text-align: right;
    direction: rtl;
    font-family: 'Segoe UI', 'Arial Hebrew', 'Noto Sans Hebrew', sans-serif;
    color: var(--gray-600);
}

/* --- Summary Cards (v2 for redesigned results) --- */

.summary-cards-v2 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.summary-card-v2 {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    text-align: center;
}

.summary-card-v2 .summary-card-label {
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray-500);
    margin-bottom: var(--space-xs);
}

.summary-card-v2 .summary-card-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-900);
    font-family: var(--font-mono);
}

.summary-card-v2 .summary-card-unit {
    font-size: 0.75rem;
    color: var(--gray-500);
}

/* --- Tabs (v2) --- */

.tabs-v2 {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--gray-200);
    margin-bottom: var(--space-xl);
}

.tab-v2 {
    padding: var(--space-md) var(--space-xl);
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-500);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all var(--transition-fast);
}

.tab-v2:hover {
    color: var(--gray-700);
}

.tab-v2.active {
    color: var(--accent-blue);
    border-bottom-color: var(--accent-blue);
}

/* --- Next Steps --- */

.next-steps {
    padding: var(--space-2xl) 0;
    border-top: 1px solid var(--gray-200);
    margin-top: var(--space-2xl);
}

.next-steps h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-lg);
}

.next-steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

/* --- Chart Placeholder --- */

.chart-placeholder {
    background: var(--gray-50);
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius-md);
    padding: var(--space-2xl);
    text-align: center;
    color: var(--gray-500);
    font-size: 0.875rem;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

.chart-placeholder-icon {
    font-size: 2rem;
    opacity: 0.5;
}

/* --- Sticky Action Bar (v2) --- */

.action-bar-sticky {
    position: sticky;
    bottom: 0;
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    padding: var(--space-md) 0;
    box-shadow: 0 -4px 6px rgba(0, 0, 0, 0.05);
    z-index: 50;
}

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

/* --- Choice Cards (Custom Scenarios) --- */

.choice-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
    margin-top: var(--space-xl);
}

.choice-card {
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    transition: all var(--transition-normal);
    text-align: center;
}

.choice-card:hover {
    border-color: var(--accent-blue);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.choice-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-md);
}

.choice-card p {
    color: var(--gray-600);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: var(--space-lg);
}

.choice-card .detail {
    font-size: 0.8125rem;
    color: var(--gray-500);
    font-family: var(--font-mono);
    margin-bottom: var(--space-lg);
}

/* --- Constraint Cards --- */

.constraint-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.constraint-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
}

.constraint-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.constraint-item h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 2px;
}

.constraint-item p {
    font-size: 0.8125rem;
    color: var(--gray-600);
    line-height: 1.5;
}

/* --- Quick Start (v2) --- */

.quick-start-v2 {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: var(--space-xl) var(--space-2xl);
    margin-top: var(--space-2xl);
}

.quick-start-v2 h3 {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray-500);
    margin-bottom: var(--space-lg);
}

.quick-start-v2 .quick-start-steps {
    display: flex;
    gap: var(--space-xl);
}

.quick-start-v2 .quick-start-step {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    flex: 1;
}

.quick-start-v2 .step-number {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary-black);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.quick-start-v2 .quick-start-step p {
    font-size: 0.875rem;
    color: var(--gray-700);
    line-height: 1.5;
}

/* --- Status Badge --- */

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-feasible {
    background: #f0fff4;
    color: var(--accent-green);
}

/* --- Fuel badges (additional) --- */

.fuel-diesel { background: #fffaf0; color: #dd6b20; }
.fuel-storage { background: #faf5ff; color: #805ad5; }

/* --- Redesign Responsive --- */

@media (max-width: 768px) {
    .bilingual {
        flex-direction: column;
    }
    .bilingual-he {
        border-top: 1px solid var(--gray-200);
        padding-top: var(--space-md);
    }
    .paths-grid,
    .next-steps-grid {
        grid-template-columns: 1fr;
    }
    .summary-cards-v2 {
        grid-template-columns: repeat(2, 1fr);
    }
    .section-content {
        flex-direction: column;
    }
    .choice-grid {
        grid-template-columns: 1fr;
    }
    .constraint-list {
        grid-template-columns: 1fr;
    }
    .callout.bilingual-callout {
        flex-direction: column;
    }
    .quick-start-v2 .quick-start-steps {
        flex-direction: column;
    }
}