/* --- 1. General Reset & Design Variables --- */
:root {
    --bg-color: #FAF9F6;          /* Warm Cream Light background */
    --bg-secondary: #FFFFFF;      /* Pure white for containers */
    --bg-tertiary: #F3F1EC;       /* Section alternates */
    --border-color: rgba(15, 23, 42, 0.12); /* Crisp blueprint line divider */
    --text-primary: #0F172A;      /* Deep Slate Charcoal for readability */
    --text-secondary: #475569;    /* Secondary Slate for descriptions */
    --text-muted: #64748B;         /* Grayed out metadata text */
    --accent-color: #EA580C;      /* Industrial Copper/Orange representing 3D printing */
    --accent-secondary: #0D9488;  /* Muted Teal representing architecture */
    --accent-glow: rgba(234, 88, 12, 0.06);
    --success-bg: rgba(13, 148, 136, 0.06);
    --danger-bg: rgba(239, 68, 68, 0.06);
    --warning-bg: rgba(245, 158, 11, 0.06);
    --warning-color: #D97706;
    --danger-color: #EF4444;
    
    --font-family: 'Prompt', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --transition-speed: 0.25s;
    --transition-curve: cubic-bezier(0.16, 1, 0.3, 1);
    --drawer-width: 560px;
}

[data-theme="dark"] {
    --bg-color: #0B0F19;          /* Deep Dark Navy */
    --bg-secondary: #1E293B;      /* Card Slate background */
    --bg-tertiary: #0F172A;       /* Dark section background */
    --border-color: rgba(255, 255, 255, 0.08); /* Clean white blueprint lines */
    --text-primary: #F8FAFC;      /* Crisp white text */
    --text-secondary: #CBD5E1;    /* Light gray text */
    --text-muted: #94A3B8;        /* Slate gray metadata */
    --accent-color: #F97316;      /* Vibrant Orange Copper */
    --accent-secondary: #14B8A6;  /* Vivid Glass Teal */
    --accent-glow: rgba(249, 115, 22, 0.12);
    --success-bg: rgba(20, 184, 166, 0.08);
    --danger-bg: rgba(239, 68, 68, 0.08);
    --warning-bg: rgba(245, 158, 11, 0.08);
}

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

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-family);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-speed) var(--transition-curve), 
                color var(--transition-speed) var(--transition-curve);
}

/* --- 2. Typography --- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.25;
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.85rem; }
h3 { font-size: 1.45rem; }
h4 { font-size: 1.2rem; }

p {
    font-weight: 300;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.lead-text {
    font-size: 1.1rem;
    line-height: 1.75;
    margin-bottom: 1.5rem;
}

.highlight-text {
    font-weight: 500;
    color: var(--text-primary);
    border-bottom: 1px dashed var(--accent-color);
}

.text-orange { color: var(--accent-color) !important; }
.text-teal { color: var(--accent-secondary) !important; }
.text-warning { color: var(--warning-color) !important; }
.text-danger { color: var(--danger-color) !important; }

/* --- 3. App Header & Navigation --- */
.app-header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 90;
    transition: background-color var(--transition-speed) var(--transition-curve);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-section {
    display: flex;
    flex-direction: column;
}

.brand-sub {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--accent-color);
}

.brand-title {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.header-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.badge-partner {
    font-size: 0.7rem;
    font-weight: 600;
    border: 1px solid var(--border-color);
    padding: 0.3rem 0.6rem;
    border-radius: 2px;
    color: var(--text-muted);
}

.badge-verdict {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.3rem 0.6rem;
    border-radius: 2px;
    background-color: var(--warning-bg);
    color: var(--warning-color);
    border: 1px solid var(--warning-color);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.btn-icon {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    width: 38px;
    height: 38px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: background-color var(--transition-speed);
}

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

.theme-icon {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid currentColor;
    position: relative;
    display: inline-block;
}

[data-theme="dark"] .theme-icon {
    background-color: currentColor;
}

.app-nav {
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-color);
}

.nav-links {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    list-style: none;
    display: flex;
    gap: 2rem;
    overflow-x: auto;
    white-space: nowrap;
}

.nav-links li a {
    display: block;
    padding: 0.8rem 0;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    transition: color var(--transition-speed), border-color var(--transition-speed);
}

.nav-links li a:hover,
.nav-links li a.active {
    color: var(--text-primary);
    border-bottom-color: var(--accent-color);
}

/* --- 4. Main Content Layout --- */
.app-main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.section-container {
    padding: 3rem 0;
    border-bottom: 1px solid var(--border-color);
}

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

.section-tag {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--accent-color);
    text-transform: uppercase;
    display: block;
    margin-bottom: 0.5rem;
}

.section-title {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-desc {
    font-size: 1.05rem;
    max-width: 800px;
    margin-bottom: 2.5rem;
}

.grid-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

.grid-3col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

@media (max-width: 900px) {
    .grid-2col, .grid-3col {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* --- 5. Hero & 3D Printing Simulator --- */
.hero-section {
    padding-top: 1rem;
}

.quick-stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 2rem;
}

.stat-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 4px;
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 1.35rem;
    font-weight: 600;
}

.hero-visual-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

.visual-header {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.glass-slider-container {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.selector-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.select-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.select-group label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.app-select {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.5rem;
    font-family: var(--font-family);
    font-size: 0.8rem;
    color: var(--text-primary);
    outline: none;
    cursor: pointer;
}

.glass-bg {
    flex-grow: 1;
    border: 1px solid var(--border-color);
    height: 260px;
    border-radius: 4px;
    position: relative;
    overflow: hidden;
    background-color: #0b111e;
}

.glass-view-content {
    width: 100%;
    height: 100%;
    position: relative;
}

.printer-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.slider-control-box {
    margin-top: 1.25rem;
}

.slider-control-box label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.slider-wrapper {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.app-slider {
    flex-grow: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
    outline: none;
}

.app-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent-color);
    cursor: pointer;
    border: 2px solid var(--bg-secondary);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

/* --- 6. Technology Cards Section --- */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

@media (max-width: 1000px) {
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 600px) {
    .tech-grid {
        grid-template-columns: 1fr;
    }
}

.tech-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    cursor: pointer;
    transition: transform var(--transition-speed), border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.tech-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent-color);
    box-shadow: 0 6px 16px rgba(15, 23, 42, 0.05);
}

.tech-card.active {
    border-color: var(--accent-secondary);
    background-color: var(--accent-glow);
}

.tech-card-header {
    margin-bottom: 1rem;
}

.tech-num {
    display: block;
    font-family: 'Inter', sans-serif;
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--accent-color);
    margin-bottom: 0.25rem;
}

.tech-card-header h3 {
    font-size: 1.1rem;
    margin-bottom: 0.15rem;
}

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

.tech-short-desc {
    font-size: 0.85rem;
    line-height: 1.5;
    margin-bottom: 1.25rem;
    flex-grow: 1;
}

.tech-bullet-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.8rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    margin-bottom: 1.25rem;
}

.tech-bullet {
    line-height: 1.4;
}

.tech-bullet span {
    font-weight: 500;
    color: var(--text-primary);
}

.btn-text {
    background: none;
    border: none;
    color: var(--accent-color);
    font-family: var(--font-family);
    font-size: 0.8rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    align-self: flex-start;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.btn-text:hover {
    text-decoration: underline;
}

/* --- 7. Technology Interactive Sandbox --- */
.tech-sandbox-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.sandbox-header {
    border-bottom: 1px solid var(--border-color);
    padding: 1.25rem 1.5rem 0 1.5rem;
}

.sandbox-header h4 {
    margin-bottom: 0.75rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.sandbox-tabs {
    display: flex;
    gap: 0.25rem;
    overflow-x: auto;
}

.tab-btn {
    background: none;
    border: 1px solid transparent;
    border-bottom: none;
    font-family: var(--font-family);
    font-size: 0.85rem;
    padding: 0.6rem 1rem;
    cursor: pointer;
    color: var(--text-secondary);
    border-radius: 4px 4px 0 0;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    background-color: var(--bg-color);
    border-color: var(--border-color);
    color: var(--text-primary);
    font-weight: 500;
}

.sandbox-body {
    padding: 2rem;
    background-color: var(--bg-color);
}

.sandbox-panel {
    display: none;
}

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

.sandbox-visual-area {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    position: relative;
    overflow: hidden;
}

.sandbox-control-area {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.sandbox-control-area h5 {
    font-size: 1.15rem;
    margin-bottom: 0.75rem;
}

.sandbox-control-area p {
    margin-bottom: 1.5rem;
}

/* 7.1 Sandbox Tab 1: Resolution & Nozzle */
.nozzle-visual {
    width: 100%;
    height: 200px;
}

/* 7.2 Sandbox Tab 2: Warping & Physics */
.warping-visual {
    width: 100%;
    height: 200px;
}

.heating-toggles {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

/* 7.3 Sandbox Tab 3: Infill Patterns */
.infill-canvas {
    width: 200px;
    height: 200px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--bg-color);
}

/* 7.4 Sandbox Tab 4: Wind Load CFD */
.cfd-visual {
    width: 100%;
    height: 220px;
}

.sim-results-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 1rem;
    margin-top: 1rem;
}

.result-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    padding: 0.4rem 0;
    border-bottom: 1px solid var(--border-color);
}

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

.res-label {
    color: var(--text-secondary);
}

.res-val {
    font-weight: 500;
    color: var(--text-primary);
}

.highlight-val {
    color: var(--accent-color);
    font-weight: 600;
}

.btn-small {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.8rem;
    border-radius: 3px;
    font-family: var(--font-family);
    font-size: 0.75rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition-speed);
}

.btn-small:hover,
.btn-small.active {
    background-color: var(--bg-color);
    border-color: var(--accent-color);
    color: var(--text-primary);
}

.btn-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #FFFFFF;
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 4px;
    font-family: var(--font-family);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 0.2s;
    margin-top: 1rem;
}

.btn-primary:hover {
    opacity: 0.9;
}

/* --- 8. Market & Financial Elements --- */
.dashboard-block {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
}

.block-header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
    margin-bottom: 1.5rem;
}

.block-header h4 {
    font-size: 1.1rem;
    color: var(--text-primary);
}

.pricing-chart-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.bar-chart-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.chart-label-group {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    font-weight: 500;
}

.chart-title {
    color: var(--text-primary);
}

.chart-price-range {
    color: var(--accent-color);
}

.stacked-bar {
    display: flex;
    height: 32px;
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.bar-segment {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 500;
    color: #FFFFFF;
}

.bar-segment.core-cost {
    background-color: var(--accent-color);
}

.bar-segment.finishing-cost {
    background-color: var(--accent-secondary);
}

.bar-segment.traditional-cost {
    background-color: #64748B;
}

.warning-box {
    background-color: var(--danger-bg);
    border-left: 4px solid var(--danger-color);
    padding: 1rem;
    border-radius: 4px;
    margin-top: 1rem;
}

.warning-title {
    font-weight: 600;
    color: var(--danger-color);
    font-size: 0.85rem;
    display: block;
    margin-bottom: 0.25rem;
}

.warning-box p {
    font-size: 0.8rem;
}

/* Custom Financial Slider and Gauge */
.financial-calculator-box {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 2rem;
}

.calc-row {
    margin-bottom: 1.5rem;
}

.calc-row label {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.calc-row label span {
    font-weight: 600;
    color: var(--text-primary);
}

.gauge-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    background-color: var(--bg-color);
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.gauge-title {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.gauge-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.gauge-status {
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.2rem 0.6rem;
    border-radius: 2px;
}

.gauge-status.critical {
    background-color: var(--danger-bg);
    color: var(--danger-color);
}

.gauge-status.warning {
    background-color: var(--warning-bg);
    color: var(--warning-color);
}

.gauge-status.good {
    background-color: var(--success-bg);
    color: var(--accent-secondary);
}

.manufacturer-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

.manufacturer-card {
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: 4px;
    background-color: var(--bg-color);
}

.manufacturer-card h5 {
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
    display: flex;
    justify-content: space-between;
}

.mfg-country {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    padding: 0.1rem 0.3rem;
    border-radius: 2px;
}

.manufacturer-card p {
    font-size: 0.8rem;
}

/* --- 9. 16-Point Master Research Blueprint Grid --- */
.blueprint-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-top: 1.5rem;
}

@media (max-width: 1000px) {
    .blueprint-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 600px) {
    .blueprint-grid {
        grid-template-columns: 1fr;
    }
}

.blueprint-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 1.25rem;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 120px;
    transition: border-color var(--transition-speed), transform var(--transition-speed), box-shadow var(--transition-speed);
}

.blueprint-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent-color);
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.04);
}

.bp-id {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
}

.bp-title {
    font-size: 0.85rem;
    font-weight: 600;
    line-height: 1.4;
    margin: 0.5rem 0;
    color: var(--text-primary);
}

.bp-category-badge {
    font-size: 0.65rem;
    font-weight: 600;
    padding: 0.15rem 0.4rem;
    border-radius: 2px;
    align-self: flex-start;
}

.bp-category-badge.tech { background-color: var(--accent-glow); color: var(--accent-color); }
.bp-category-badge.market { background-color: var(--success-bg); color: var(--accent-secondary); }
.bp-category-badge.brand { background-color: rgba(99, 102, 241, 0.06); color: #6366F1; }
.bp-category-badge.risk { background-color: var(--warning-bg); color: var(--warning-color); }

/* --- 10. Roadmap section --- */
.roadmap-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
}

.roadmap-tabs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.roadmap-tab-btn {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    padding: 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-family: var(--font-family);
    text-align: left;
    transition: all var(--transition-speed);
}

.roadmap-tab-btn:hover,
.roadmap-tab-btn.active {
    border-color: var(--accent-color);
    background-color: var(--accent-glow);
}

.roadmap-tab-btn h4 {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.roadmap-tab-btn span {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.roadmap-content {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 4px;
    display: none;
}

.roadmap-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.roadmap-meta-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}

.roadmap-meta-col h5 {
    font-size: 0.9rem;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.roadmap-meta-col p {
    font-size: 0.85rem;
}

/* --- 11. Built Environment Synergy Map --- */
.ecosystem-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 2rem;
    margin-top: 3rem;
}

.ecosystem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 1.5rem;
}

.ecosystem-card {
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 1.5rem;
    background-color: var(--bg-color);
    transition: transform var(--transition-speed);
}

.ecosystem-card:hover {
    transform: translateY(-2px);
}

.ecosystem-card.highlight {
    border-color: var(--accent-color);
    box-shadow: 0 0 12px var(--accent-glow);
}

.ecosystem-card h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.ecosystem-card p {
    font-size: 0.85rem;
}

/* --- 12. Slide-out Detail Drawer --- */
.drawer-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(4px);
    z-index: 200;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-speed) ease;
}

.drawer-backdrop.active {
    opacity: 1;
    pointer-events: auto;
}

.drawer-container {
    position: fixed;
    top: 0;
    right: 0;
    width: var(--drawer-width);
    max-width: 100%;
    height: 100vh;
    background-color: var(--bg-secondary);
    box-shadow: -8px 0 32px rgba(15, 23, 42, 0.15);
    z-index: 210;
    transform: translateX(100%);
    transition: transform var(--transition-speed) var(--transition-curve);
    display: flex;
    flex-direction: column;
}

.drawer-container.active {
    transform: translateX(0);
}

.drawer-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.drawer-title-group h2 {
    font-size: 1.25rem;
    color: var(--text-primary);
}

.drawer-category {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-color);
    text-transform: uppercase;
}

.drawer-close {
    background: none;
    border: none;
    font-size: 1.75rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.2s;
}

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

.drawer-body {
    padding: 2rem;
    overflow-y: auto;
    flex-grow: 1;
}

.drawer-body h4 {
    margin: 1.5rem 0 0.5rem 0;
    font-size: 1.05rem;
}

.drawer-body h4:first-of-type {
    margin-top: 0;
}

.drawer-body ul {
    padding-left: 1.25rem;
    margin-bottom: 1.5rem;
}

.drawer-body li {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    font-weight: 300;
    color: var(--text-secondary);
}

.drawer-body strong {
    font-weight: 500;
    color: var(--text-primary);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* --- 13. Global Case Studies & Hybrid Model Cards --- */
.benchmark-container {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.cases-flex {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1.25rem;
}

.case-item-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--accent-color);
    padding: 1.25rem;
    border-radius: 4px;
    display: flex;
    gap: 1.25rem;
    align-items: center;
    transition: transform var(--transition-speed);
}

.case-item-card:hover {
    transform: translateX(4px);
}

.case-flag-badge {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.5rem 0.75rem;
    font-size: 1.25rem;
    line-height: 1;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    min-width: 54px;
    text-align: center;
}

.case-info-block h4 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.case-info-block p {
    font-size: 0.85rem;
    line-height: 1.5;
}

/* Hybrid Model Engine Columns */
.engines-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
    margin-top: 1.25rem;
}

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

.engine-column-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform var(--transition-speed), border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.engine-column-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent-secondary);
    box-shadow: 0 4px 12px rgba(13, 148, 136, 0.05);
}

.engine-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
}

.engine-icon-badge {
    font-size: 1.5rem;
}

.engine-title-group h5 {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 600;
}

.engine-title-group span {
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--accent-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.engine-body-desc {
    font-size: 0.825rem;
    line-height: 1.5;
    flex-grow: 1;
    margin-bottom: 1.25rem;
}

.engine-focus-badge {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    padding: 0.4rem 0.6rem;
    border-radius: 3px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
}

.engine-focus-badge strong {
    color: var(--accent-color);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* --- 14. Footer --- */
.app-footer {
    border-top: 1px solid var(--border-color);
    padding: 3rem 0;
    background-color: var(--bg-secondary);
    text-align: center;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-logo {
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.footer-text {
    font-size: 0.8rem;
    color: var(--text-muted);
}