styles.css

/* Conitiv — Landing page B2B Risk Management
   Ton : sobre, crédible, factuel. Pas de bullshit marketing. */

:root {
  --color-bg: #fafafa;
  --color-bg-alt: #f0f2f5;
  --color-text: #1a1a1a;
  --color-text-muted: #4a4a4a;
  --color-accent: #0d47a1;
  --color-accent-hover: #1565c0;
  --color-border: #e0e0e0;
  --font-serif: 'DM Serif Display', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --max-width: 720px;
  --spacing: 1.5rem;
  --radius: 4px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing);
}

.container--wide {
  max-width: 1100px;
}

/* Header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 250, 250, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--color-text);
  text-decoration: none;
}

.nav {
  display: flex;
  gap: 1.5rem;
}

.nav a {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-decoration: none;
}

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

/* Hero */
.hero {
  padding: 4rem 0 3rem;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 400;
  line-height: 1.25;
  margin: 0 0 1.25rem;
  color: var(--color-text);
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  margin: 0 0 2rem;
  max-width: 560px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius);
  transition: background 0.2s, color 0.2s;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

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

.btn-secondary {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}

.btn-secondary:hover {
  background: rgba(13, 71, 161, 0.08);
}

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

/* Sections */
.section {
  padding: 3rem 0;
}

.section--alt {
  background: var(--color-bg-alt);
}

.section h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 400;
  margin: 0 0 1.25rem;
  color: var(--color-text);
}

.section-lead {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  margin: 0 0 1.5rem;
}

/* Facts list */
.facts-list {
  margin: 0 0 1.5rem;
  padding-left: 1.25rem;
}

.facts-list li {
  margin-bottom: 0.5rem;
}

/* Quote */
.quote {
  margin: 2rem 0 0;
  padding: 1.25rem 1.5rem;
  background: #fff;
  border-left: 4px solid var(--color-accent);
  font-size: 1rem;
  font-style: italic;
  color: var(--color-text);
}

.quote--highlight {
  background: rgba(13, 71, 161, 0.06);
}

.quote--closing {
  font-size: 1.0625rem;
}

/* Risk blocks */
.risk-blocks {
  display: grid;
  gap: 2rem;
  margin-top: 1.5rem;
}

@media (min-width: 640px) {
  .risk-blocks {
    grid-template-columns: 1fr 1fr;
  }
}

.risk-block {
  padding: 1.5rem;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.risk-block h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 0.75rem;
}

.risk-block-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0 0 0.5rem;
}

.risk-block ul {
  margin: 0 0 0.75rem;
  padding-left: 1.25rem;
}

.risk-block ul li {
  margin-bottom: 0.25rem;
}

.risk-block-result {
  font-size: 0.9375rem;
  margin: 0;
}

.risk-block-accent {
  font-size: 0.875rem;
  color: var(--color-accent);
  font-weight: 500;
  margin: 0.75rem 0 0;
}

/* Personal risk */
.personal-risk-list {
  margin: 0 0 1.5rem;
  padding-left: 1.25rem;
}

.personal-risk-list li {
  margin-bottom: 0.5rem;
}

/* Pillars */
.pillars {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

@media (min-width: 640px) {
  .pillars {
    grid-template-columns: repeat(3, 1fr);
  }
}

.pillar {
  padding: 1.5rem;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.pillar-icon {
  font-size: 1.5rem;
  display: block;
  margin-bottom: 0.75rem;
}

.pillar h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 0.75rem;
}

.pillar ul {
  margin: 0;
  padding-left: 1.25rem;
}

.pillar ul li {
  margin-bottom: 0.35rem;
  font-size: 0.9375rem;
}

/* Solution benefits */
.solution-benefits {
  display: grid;
  gap: 2rem;
  margin-top: 1.5rem;
}

@media (min-width: 640px) {
  .solution-benefits {
    grid-template-columns: 1fr 1fr;
  }
}

.benefit-group h3,
.audience-group h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 0.75rem;
}

.benefit-group ul,
.audience-group ul {
  margin: 0;
  padding-left: 1.25rem;
}

.benefit-group ul li,
.audience-group ul li {
  margin-bottom: 0.35rem;
}

/* Audience */
.audience {
  display: grid;
  gap: 2rem;
  margin-top: 1.5rem;
}

@media (min-width: 640px) {
  .audience {
    grid-template-columns: 1fr 1fr;
  }
}

/* Urgency */
.urgency-list {
  margin: 0 0 1.5rem;
  padding-left: 1.25rem;
}

.urgency-list li {
  margin-bottom: 0.5rem;
}

/* CTA section */
.cta-section {
  padding: 4rem 0;
  background: var(--color-accent);
  color: #fff;
}

.cta-section h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 400;
  margin: 0 0 1.5rem;
  color: #fff;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.cta-section .btn-primary {
  background: #fff;
  color: var(--color-accent);
}

.cta-section .btn-primary:hover {
  background: rgba(255, 255, 255, 0.9);
}

.cta-section .btn-secondary {
  border-color: #fff;
  color: #fff;
}

.cta-section .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* Footer */
.footer {
  padding: 2rem 0;
  border-top: 1px solid var(--color-border);
}

.footer p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.footer-sources {
  margin-top: 1rem;
}

.footer-sources summary {
  font-size: 0.8125rem;
  color: var(--color-accent);
  cursor: pointer;
}

.footer-sources summary:hover {
  text-decoration: underline;
}

.sources-list {
  margin: 0.5rem 0 0;
  padding-left: 1.25rem;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.sources-list li {
  margin-bottom: 0.35rem;
}

.sources-list a {
  color: var(--color-accent);
  text-decoration: none;
}

.sources-list a:hover {
  text-decoration: underline;
}

/* Matrice & pondération (page d'accueil) */
.legend {
  margin-bottom: 1.5rem;
  padding: 1rem 1.25rem;
  background: rgba(0, 0, 0, 0.03);
  border-radius: var(--radius);
}

.legend h3 {
  font-size: 0.875rem;
  font-weight: 600;
  margin: 0 0 0.75rem;
}

.legend-items {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

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

.legend-icon {
  margin-right: 0.25rem;
}

.matrix-wrapper {
  overflow-x: auto;
  margin-bottom: 2rem;
}

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

.matrix-table th,
.matrix-table td {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  text-align: center;
}

.matrix-table th {
  background: var(--color-bg-alt);
  font-weight: 500;
  text-align: left;
}

.matrix-table thead th {
  text-align: center;
  white-space: nowrap;
}

.matrix-table tbody th {
  font-weight: 500;
  min-width: 120px;
}

.matrix-cell {
  font-size: 1.125rem;
}

.matrix-cell--critical {
  background: rgba(211, 47, 47, 0.12);
}

.matrix-cell--elevated {
  background: rgba(245, 124, 0, 0.12);
}

.matrix-cell--moderate {
  background: rgba(25, 118, 210, 0.08);
}

.matrix-cell--low {
  background: rgba(0, 0, 0, 0.04);
}

.poids-section {
  margin-top: 1rem;
}

.poids-section h3 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 1rem;
}

.poids-table-wrapper {
  overflow-x: auto;
}

.poids-table {
  width: 100%;
  max-width: 400px;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.poids-table th,
.poids-table td {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  text-align: left;
}

.poids-table th {
  background: var(--color-bg-alt);
  font-weight: 500;
}

.poids-table tbody tr:nth-child(even) {
  background: rgba(0, 0, 0, 0.02);
}