/* Product Ideas Presentation Styles */
/* Font Pairing: Lora (headings) + Roboto (body) */

:root {
    /* Colors */
    --idea1-color: #f28f3b; /* tangerine */
    --idea2-color: #c8553d; /* jasper */
    --idea3-color: #588b8b; /* dark cyan */
    --compare-color: #ffd5c2; /* apricot */

    /* Neutrals */
    --text-primary: #1a1a1a;
    --text-secondary: #4a4a4a;
    --border-color: #e0e0e0;
    --bg-light: #f8f8f8;
    --white: #ffffff;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
}

/* ===== GLOBAL STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    overflow-x: hidden;
}

body {
    font-family: 'Roboto', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--white);
    overflow-x: hidden;
    width: 100%;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Lora', serif;
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: 3rem; font-weight: 700; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: var(--spacing-sm);
}

/* Monospace for numbers */
.number, .metric {
    font-family: 'SF Mono', 'Consolas', 'Courier New', monospace;
    font-weight: 600;
}

/* ===== PAGE MANAGEMENT ===== */
.page {
    display: none;
    min-height: 100vh;
}

.page.active {
    display: block;
}

#homepage {
    padding: var(--spacing-lg) var(--spacing-md);
}

#idea-detail,
#comparison,
#discussion {
    padding: 0;
}

.content-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg) 30px;
}

/* ===== HOMEPAGE ===== */
.hero {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md) var(--spacing-xl);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-xl);
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: var(--spacing-sm);
    line-height: 1.1;
}

.hero .subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.idea-card {
    background: var(--white);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-lg);
    transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
    cursor: pointer;
}

.idea-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    border-color: var(--accent-color);
}

.card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

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

.card-header h2 {
    font-size: 2rem;
    margin: 0;
    color: var(--accent-color);
    line-height: 1.2;
}

.card-label {
    font-family: 'Lora', serif;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
}

.card-pitch {
    font-size: 1.125rem;
    line-height: 1.5;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    min-height: 60px;
}

.btn-view {
    font-family: 'Lora', serif;
    font-size: 1rem;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--accent-color);
    color: var(--text-primary);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: opacity 0.2s;
    width: 100%;
}

.btn-view:hover {
    opacity: 0.85;
}

.btn-discussion {
    width: auto;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-xl);
    background: #1976d2;
    color: #ffffff;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.125rem;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(25, 118, 210, 0.25);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.btn-discussion:hover {
    background: #1565c0;
    opacity: 1;
    box-shadow: 0 6px 20px rgba(25, 118, 210, 0.35);
    transform: translateY(-2px);
}

.btn-discussion i {
    width: 22px;
    height: 22px;
}

.compare-card {
    grid-column: 1 / -1;
    max-width: 600px;
    margin: var(--spacing-lg) auto 0;
}

/* ===== TABS NAVIGATION ===== */
.tabs {
    display: flex;
    gap: 0;
    background: var(--bg-light);
    border-bottom: 2px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    flex-wrap: wrap;
}

.tab {
    font-family: 'Lora', serif;
    font-size: 1rem;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tab i {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

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

.tab.active {
    background: var(--white);
    color: var(--text-primary);
    border-bottom-color: var(--text-primary);
}

.tab.home-tab {
    margin-left: auto;
}

/* Tab colors for each idea */
.tab[onclick*="idea1"] {
    color: #f28f3b;
}

.tab[onclick*="idea1"]:hover,
.tab[onclick*="idea1"].active {
    color: #f28f3b;
    border-bottom-color: #f28f3b;
}

.tab[onclick*="idea1"] i {
    color: #f28f3b;
}

.tab[onclick*="idea2"] {
    color: #c8553d;
}

.tab[onclick*="idea2"]:hover,
.tab[onclick*="idea2"].active {
    color: #c8553d;
    border-bottom-color: #c8553d;
}

.tab[onclick*="idea2"] i {
    color: #c8553d;
}

.tab[onclick*="idea3"] {
    color: #588b8b;
}

.tab[onclick*="idea3"]:hover,
.tab[onclick*="idea3"].active {
    color: #588b8b;
    border-bottom-color: #588b8b;
}

.tab[onclick*="idea3"] i {
    color: #588b8b;
}

.tab[onclick*="Comparison"] {
    color: #f28f3b;
}

.tab[onclick*="Comparison"]:hover,
.tab[onclick*="Comparison"].active {
    color: #f28f3b;
    border-bottom-color: #f28f3b;
}

.tab[onclick*="Comparison"] i {
    color: #f28f3b;
}

.tab[onclick*="Discussion"] {
    color: #1976d2;
}

.tab[onclick*="Discussion"]:hover,
.tab[onclick*="Discussion"].active {
    color: #1976d2;
    border-bottom-color: #1976d2;
}

.tab[onclick*="Discussion"] i {
    color: #1976d2;
}

/* ===== IDEA DETAIL SECTIONS ===== */
.section {
    margin-bottom: var(--spacing-xl);
}

.section-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.pain-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-family: 'Lora', serif;
    font-size: 0.875rem;
    padding: 4px 12px;
    border-radius: 16px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pain-badge i {
    display: inline-block;
    vertical-align: middle;
}

.pain-badge.critical {
    background: #ffebee;
    color: #c62828;
}

.pain-badge.convenience {
    background: #e3f2fd;
    color: #1565c0;
}

.pain-badge.mixed {
    background: #fff3e0;
    color: #e65100;
}

.info-badge {
    display: inline-flex;
    align-items: center;
    font-size: 1.25rem;
    cursor: help;
    opacity: 0.6;
    transition: opacity 0.2s;
}

.info-badge:hover {
    opacity: 1;
}

/* Key Numbers Grid */
.key-numbers {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.number-card {
    background: var(--bg-light);
    border-left: 4px solid var(--accent-color, var(--text-primary));
    padding: var(--spacing-md);
    border-radius: 8px;
}

.number-card h4 {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.number-card .big-number {
    font-family: 'SF Mono', 'Consolas', monospace;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color, var(--text-primary));
    margin-bottom: var(--spacing-xs);
}

.number-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
}

.info-pill-container {
    margin-top: var(--spacing-sm);
}

.info-pill {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    background: var(--white);
    border: 1px solid var(--accent-color, var(--border-color));
    border-radius: 16px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--accent-color, var(--text-primary));
    white-space: nowrap;
}

.info-pill i {
    flex-shrink: 0;
}

/* Pain Points List */
.pain-points-list {
    list-style: none;
}

.pain-point-item {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    background: var(--bg-light);
    border-radius: 8px;
}

.pain-point-item strong {
    display: block;
    margin-bottom: var(--spacing-xs);
}

.progress-bar {
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    margin: var(--spacing-xs) 0;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent-color, var(--text-primary));
    border-radius: 4px;
    transition: width 0.3s ease;
}

/* Proposed Solution */
.solution-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.solution-feature-card {
    background: var(--bg-light);
    padding: var(--spacing-md);
    border-radius: 8px;
    border-left: 4px solid var(--accent-color, var(--text-primary));
    transition: transform 0.2s, box-shadow 0.2s;
}

.solution-feature-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 12px;
    margin-bottom: var(--spacing-sm);
}

.solution-feature-card h4 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.solution-feature-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}

/* Competitor Table */
.competitor-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-md) 0;
}

.competitor-table th,
.competitor-table td {
    padding: var(--spacing-sm);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.competitor-table th {
    font-family: 'Lora', serif;
    font-weight: 600;
    background: var(--bg-light);
}

.threat-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* Challenges Grid */
.challenges-grid {
    display: grid;
    gap: var(--spacing-md);
}

.challenge-card {
    background: var(--bg-light);
    padding: var(--spacing-md);
    border-radius: 8px;
    border-left: 4px solid var(--text-secondary);
}

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

.challenge-card h4 {
    margin: 0;
}

.probability {
    font-family: 'Lora', serif;
    font-size: 0.875rem;
    padding: 4px 8px;
    background: var(--white);
    border-radius: 4px;
}

/* Validation Timeline */
.timeline {
    position: relative;
    padding: var(--spacing-md) 0;
}

.timeline-phase {
    display: grid;
    grid-template-columns: 80px 120px 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    align-items: start;
}

.phase-icon-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 72px;
    height: 72px;
    border-radius: 50%;
    border: 3px solid;
    background: var(--bg-light);
}

.phase-arrow {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-sm) 0;
    margin-bottom: var(--spacing-sm);
}

.phase-label {
    font-family: 'Lora', serif;
    font-weight: 600;
    font-size: 1.125rem;
    padding-top: var(--spacing-sm);
}

.phase-content {
    background: var(--bg-light);
    padding: var(--spacing-md);
    border-radius: 8px;
    border-left: 4px solid var(--accent-color, var(--text-primary));
}

.phase-item {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    align-items: flex-start;
}

.phase-item:last-of-type {
    margin-bottom: 0;
}

.phase-item i {
    flex-shrink: 0;
    margin-top: 2px;
}

.phase-item strong {
    display: inline;
}

/* PMF Criterion Highlighting */
.phase-item.pmf-criterion {
    background: #fff9e6;
    padding: var(--spacing-sm);
    border-radius: 6px;
    border: 2px solid #ffd54f;
    margin-bottom: var(--spacing-md);
}

.pmf-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
}

.pmf-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 6px;
    background: #ffa726;
    color: white;
    border-radius: 4px;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.phase-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.phase-meta span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* Principles Grid */
.principles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.principle-box {
    padding: var(--spacing-sm);
    border-radius: 8px;
    text-align: center;
    font-size: 0.875rem;
    border: 2px solid;
    transition: transform 0.2s;
}

.principle-box:hover {
    transform: scale(1.05);
}

/* Green variations - positive alignment */
.principle-box.green:nth-child(4n+1) {
    background: #e8f5e9;
    border-color: #4caf50;
    color: #1b5e20;
}

.principle-box.green:nth-child(4n+2) {
    background: #e0f2f1;
    border-color: #26a69a;
    color: #00695c;
}

.principle-box.green:nth-child(4n+3) {
    background: #f1f8e9;
    border-color: #9ccc65;
    color: #558b2f;
}

.principle-box.green:nth-child(4n+4) {
    background: #e8f5e9;
    border-color: #66bb6a;
    color: #2e7d32;
}

/* Yellow/Orange variations - moderate alignment */
.principle-box.yellow:nth-child(3n+1) {
    background: #fff3e0;
    border-color: #ffa726;
    color: #e65100;
}

.principle-box.yellow:nth-child(3n+2) {
    background: #fff8e1;
    border-color: #ffb74d;
    color: #f57c00;
}

.principle-box.yellow:nth-child(3n+3) {
    background: #fff3e0;
    border-color: #ff9800;
    color: #ef6c00;
}

/* Red variations - needs work */
.principle-box.red:nth-child(2n+1) {
    background: #ffebee;
    border-color: #ef5350;
    color: #c62828;
}

.principle-box.red:nth-child(2n+2) {
    background: #fce4ec;
    border-color: #ec407a;
    color: #ad1457;
}

/* Hypotheses */
.hypotheses-list {
    list-style: none;
}

.hypothesis-item {
    background: var(--bg-light);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-radius: 8px;
}

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

.hypothesis-id {
    font-family: 'Lora', serif;
    font-weight: 600;
}

.status-badge, .priority-badge {
    font-family: 'Lora', serif;
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 12px;
    margin-left: var(--spacing-xs);
}

.status-badge.not-validated { background: #ffebee; color: #c62828; }
.status-badge.partially-validated { background: #fff3e0; color: #e65100; }
.status-badge.validated { background: #e8f5e9; color: #2e7d32; }

.priority-badge.critical { background: #c62828; color: white; }
.priority-badge.high { background: #e65100; color: white; }
.priority-badge.medium { background: #1976d2; color: white; }

/* Discovery Challenge */
.difficulty-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    border-radius: 16px;
    font-family: 'Lora', serif;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-left: 0.5rem;
}

.difficulty-pill.easy {
    background: #e8f5e9;
    color: #2e7d32;
}

.difficulty-pill.moderate {
    background: #fff3e0;
    color: #e65100;
}

.difficulty-pill.hard {
    background: #ffebee;
    color: #c62828;
}

.channels-list {
    list-style: none;
    padding-left: 0;
}

.channels-list li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.channels-list li:before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent-color, var(--text-primary));
}

/* Moats Grid */
.moats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.moat-card {
    background: var(--bg-light);
    padding: var(--spacing-md);
    border-radius: 8px;
    border-left: 4px solid var(--accent-color, var(--text-primary));
    transition: transform 0.2s, box-shadow 0.2s;
}

.moat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.moat-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.moat-header h4 {
    margin: 0;
    font-size: 1.125rem;
}

.moat-strength {
    font-family: 'Lora', serif;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-xs);
}

.moat-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}

/* Problem List */
.problem-list {
    list-style: none;
    padding-left: 0;
}

.problem-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    background: var(--bg-light);
    border-radius: 8px;
    border-left: 3px solid var(--accent-color, var(--text-primary));
}

.problem-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    flex-shrink: 0;
}

.problem-list li span {
    flex: 1;
    line-height: 1.6;
    padding-top: 8px;
}

/* Keyword Highlighting */
.highlight-number {
    font-weight: 700;
    color: var(--accent-color, var(--text-primary));
    background: var(--accent-color, var(--text-primary))11;
    padding: 2px 4px;
    border-radius: 3px;
}

.highlight-negative {
    font-weight: 600;
    color: #c62828;
    background: #ffebee;
    padding: 2px 4px;
    border-radius: 3px;
}

/* ===== COMPARISON PAGE ===== */
/* Recommendation Panel */
.recommendation-panel {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: 12px;
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    border: 2px solid #1976d2;
    box-shadow: 0 4px 12px rgba(25, 118, 210, 0.15);
}

.recommendation-panel h3 {
    display: flex;
    align-items: center;
    margin: 0 0 var(--spacing-lg) 0;
    color: #1976d2;
    font-size: 1.5rem;
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.insight-item {
    background: white;
    padding: var(--spacing-md);
    border-radius: 8px;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.insight-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.insight-item div {
    flex: 1;
}

.insight-item strong {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.insight-item p {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.recommendation-note {
    background: white;
    padding: var(--spacing-md);
    border-radius: 8px;
    border-left: 4px solid #1976d2;
    line-height: 1.6;
}

.recommendation-note strong {
    color: #1976d2;
}

.comparison-table-wrapper {
    overflow-x: auto;
    margin: var(--spacing-lg) 0;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px;
}

.comparison-table th,
.comparison-table td {
    padding: var(--spacing-md);
    text-align: left;
    border: 1px solid var(--border-color);
}

.comparison-table th {
    font-family: 'Lora', serif;
    font-weight: 600;
    background: var(--bg-light);
    position: sticky;
    top: 0;
    z-index: 10;
}

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

.chart-section {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg);
    background: var(--bg-light);
    border-radius: 12px;
}

.chart-section h2 {
    margin-bottom: var(--spacing-md);
}

.chart-section canvas {
    max-height: 400px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .page {
        padding: var(--spacing-sm);
    }

    .content-wrapper {
        max-width: 100%;
        padding: var(--spacing-sm) 12px;
    }

    .card-grid {
        max-width: 100%;
        grid-template-columns: 1fr;
        padding: 0 var(--spacing-sm);
    }

    .hero {
        padding: var(--spacing-lg) var(--spacing-sm) var(--spacing-lg);
        margin-bottom: var(--spacing-lg);
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero .subtitle {
        font-size: 1rem;
        margin-bottom: var(--spacing-lg);
    }

    .btn-discussion {
        font-size: 1rem;
        padding: var(--spacing-sm) var(--spacing-lg);
        gap: 0.5rem;
    }

    .btn-discussion i {
        width: 18px;
        height: 18px;
    }

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

    .card-header h2 {
        font-size: 1.5rem;
    }

    .card-icon i {
        width: 32px !important;
        height: 32px !important;
    }

    .compare-card {
        grid-column: 1;
        max-width: 100%;
    }

    .tabs {
        font-size: 0.875rem;
        justify-content: space-around;
        padding: var(--spacing-sm) var(--spacing-xs);
        gap: var(--spacing-xs);
    }

    .tab {
        padding: var(--spacing-sm);
        font-size: 0.75rem;
        flex: 0 1 auto;
    }

    /* Hide tab text on mobile, show only icons */
    .tab-text {
        display: none;
    }

    .tab i {
        width: 24px;
        height: 24px;
    }

    .key-numbers {
        grid-template-columns: 1fr;
    }

    .timeline-phase {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .phase-icon-wrapper {
        margin: 0 auto var(--spacing-sm);
    }

    .phase-label {
        text-align: center;
        padding-top: 0;
    }

    .solution-features-grid {
        grid-template-columns: 1fr;
    }

    .principles-grid {
        grid-template-columns: repeat(auto-fill, minmax(85px, 1fr));
    }

    /* Recommendation panel on mobile */
    .recommendation-panel {
        padding: var(--spacing-md);
        margin: var(--spacing-lg) 0;
    }

    .recommendation-panel h3 {
        font-size: 1.25rem;
    }

    .insights-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }

    .insight-item {
        padding: var(--spacing-sm);
    }

    .insight-item strong {
        font-size: 0.75rem;
    }

    .insight-item p {
        font-size: 0.9rem;
    }

    .recommendation-note {
        padding: var(--spacing-sm);
        font-size: 0.875rem;
    }

    /* Comparison table - allow horizontal scroll on mobile */
    .comparison-table-wrapper {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        margin-left: calc(-1 * var(--spacing-sm));
        margin-right: calc(-1 * var(--spacing-sm));
        padding: 0 var(--spacing-sm);
    }

    .comparison-table {
        min-width: 600px;
    }

    .comparison-table th,
    .comparison-table td {
        padding: var(--spacing-xs);
        font-size: 0.875rem;
    }

    /* Competitor table */
    .competitor-table {
        font-size: 0.875rem;
    }

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

/* ===== DISCUSSION CHECKLIST ===== */
.checklist-section {
    margin-bottom: var(--spacing-xl);
    background: var(--bg-light);
    padding: var(--spacing-lg);
    border-radius: 12px;
}

.checklist-section h2 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
}

.discussion-checklist {
    list-style: none;
    padding-left: 0;
}

.discussion-checklist li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
    background: var(--white);
    border-radius: 8px;
    transition: background 0.2s;
}

.discussion-checklist li:hover {
    background: #f0f0f0;
}

.discussion-checklist input[type="checkbox"] {
    margin-top: 4px;
    width: 18px;
    height: 18px;
    cursor: pointer;
    flex-shrink: 0;
}

.discussion-checklist label {
    cursor: pointer;
    line-height: 1.6;
    flex: 1;
}

.discussion-checklist input[type="checkbox"]:checked + label {
    text-decoration: line-through;
    opacity: 0.6;
}

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-lg { margin-bottom: var(--spacing-lg); }