/* ============================================
   mssi.fr — Blog financier
   Feuille de style principale
   ============================================ */

/* ---- VARIABLES DE THÈME ---- */
:root {
  --bg: #fafaf7;
  --bg-alt: #f0f4f8;
  --ink: #0d1a2d;
  --ink-soft: #4a5568;
  --ink-muted: #718096;
  --accent: #0a3d62;
  --accent-light: #3c6382;
  --accent-bg: #e8eef4;
  --green: #2d8659;
  --red: #c0392b;
  --border: #e1e5dc;
  --card: #ffffff;
  --shadow-sm: 0 1px 2px rgba(13, 26, 45, 0.04);
  --shadow-md: 0 4px 12px rgba(13, 26, 45, 0.06);
  --shadow-lg: 0 10px 30px rgba(13, 26, 45, 0.10);

  --font-serif: 'Cormorant Garamond', 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body: 'Source Serif Pro', Georgia, serif;
  --font-sans: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent-light); }

.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 760px; margin: 0 auto; padding: 0 24px; }

/* ---- TOP BAR ---- */
.topbar {
  background: var(--ink);
  color: #fff;
  font-size: 12.5px;
  padding: 9px 0;
  font-family: var(--font-sans);
  letter-spacing: 0.3px;
}
.topbar .container { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.topbar a { color: #fff; opacity: 0.85; }
.topbar a:hover { opacity: 1; color: #fff; }
.topbar .right { display: flex; gap: 18px; }

/* ---- HEADER ---- */
header.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 22px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
  background: rgba(255, 255, 255, 0.96);
}
header.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand { display: flex; align-items: center; gap: 14px; }
.brand-logo {
  width: 50px; height: 50px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 20px;
  font-family: var(--font-sans);
  letter-spacing: 0.5px;
}
.brand-text h1 {
  font-family: var(--font-serif);
  font-size: 28px;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: -0.5px;
  line-height: 1;
}
.brand-text p {
  font-size: 12px;
  color: var(--ink-muted);
  font-family: var(--font-sans);
  margin-top: 4px;
  letter-spacing: 0.5px;
}

nav.main-nav ul {
  display: flex;
  list-style: none;
  gap: 32px;
  font-family: var(--font-sans);
  font-size: 14px;
}
nav.main-nav a {
  color: var(--ink);
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}
nav.main-nav a:hover { color: var(--accent); }
nav.main-nav a.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--accent);
}

/* Mobile nav toggle */
.nav-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--ink); margin: 5px 0;
  transition: all 0.3s;
}

/* ---- TICKER ---- */
.ticker {
  background: #0d1a2d;
  color: #fff;
  padding: 10px 0;
  font-family: var(--font-mono);
  font-size: 13px;
  overflow: hidden;
  white-space: nowrap;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.ticker-content {
  display: inline-flex;
  gap: 44px;
  padding-left: 24px;
  animation: ticker-scroll 45s linear infinite;
}
@keyframes ticker-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.ticker-item { display: inline-flex; gap: 10px; align-items: center; }
.ticker-symbol { font-weight: 600; color: #cbd5e0; }
.ticker-up { color: #4ade80; }
.ticker-down { color: #f87171; }

/* ---- HERO ---- */
.hero {
  background: linear-gradient(135deg, #f0f4f8 0%, #e8eef4 100%);
  padding: 90px 0 100px;
  text-align: center;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(10, 61, 98, 0.04) 0%, transparent 50%),
    radial-gradient(circle at 80% 30%, rgba(60, 99, 130, 0.04) 0%, transparent 50%);
  pointer-events: none;
}
.hero-eyebrow {
  font-family: var(--font-sans);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--accent);
  margin-bottom: 20px;
  font-weight: 600;
}
.hero h2 {
  font-family: var(--font-serif);
  font-size: 56px;
  line-height: 1.1;
  color: var(--accent);
  margin-bottom: 24px;
  font-weight: 600;
  letter-spacing: -1.5px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}
.hero h2 em {
  font-style: italic;
  color: var(--accent-light);
}
.hero p.lead {
  font-size: 20px;
  color: var(--ink-soft);
  max-width: 620px;
  margin: 0 auto 36px;
  line-height: 1.55;
}
.cta {
  display: inline-block;
  background: var(--accent);
  color: #fff !important;
  padding: 15px 36px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.5px;
  border-radius: 2px;
  transition: all 0.25s;
  border: 2px solid var(--accent);
  text-transform: uppercase;
}
.cta:hover {
  background: transparent;
  color: var(--accent) !important;
}
.cta-secondary {
  background: transparent;
  color: var(--accent) !important;
  margin-left: 12px;
}
.cta-secondary:hover {
  background: var(--accent);
  color: #fff !important;
}

/* ---- SECTIONS ---- */
section { padding: 80px 0; }
section.alt-bg { background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 44px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--accent);
}
.section-head h3 {
  font-family: var(--font-serif);
  font-size: 34px;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: -0.5px;
}
.section-head a {
  font-family: var(--font-sans);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ---- ARTICLES GRID ---- */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-light);
}
.card-img {
  height: 200px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
}
.card-img.green { background: linear-gradient(135deg, #1d6e4a, #2d8659); }
.card-img.amber { background: linear-gradient(135deg, #92400e, #d97706); }
.card-img.indigo { background: linear-gradient(135deg, #312e81, #4f46e5); }
.card-img.slate { background: linear-gradient(135deg, #1e293b, #475569); }
.card-img.red { background: linear-gradient(135deg, #991b1b, #dc2626); }
.card-img svg {
  position: absolute;
  bottom: 20px; right: 20px;
  width: 80px; height: 50px;
  opacity: 0.5;
  stroke: white;
  fill: none;
  stroke-width: 2;
}
.card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.card-cat {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 10.5px;
  color: var(--accent);
  background: var(--accent-bg);
  padding: 4px 12px;
  border-radius: 2px;
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  font-weight: 700;
  align-self: flex-start;
}
.card h4 {
  font-family: var(--font-serif);
  font-size: 22px;
  margin-bottom: 12px;
  line-height: 1.25;
  color: var(--ink);
  font-weight: 600;
  letter-spacing: -0.3px;
}
.card h4 a { color: inherit; }
.card h4 a:hover { color: var(--accent); }
.card p {
  font-size: 15px;
  color: var(--ink-soft);
  margin-bottom: 18px;
  line-height: 1.55;
  flex: 1;
}
.card-meta {
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--ink-muted);
  padding-top: 14px;
  border-top: 1px solid var(--border);
  letter-spacing: 0.3px;
}

/* ---- CATEGORIES ---- */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 8px;
}
.cat-card {
  text-align: center;
  padding: 36px 20px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 4px;
  transition: all 0.25s;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
}
.cat-card:hover {
  border-color: var(--accent);
  background: var(--accent-bg);
  transform: translateY(-2px);
}
.cat-icon {
  font-size: 36px;
  margin-bottom: 14px;
  display: block;
}
.cat-card h5 {
  font-family: var(--font-serif);
  color: var(--accent);
  font-size: 18px;
  margin-bottom: 6px;
  font-weight: 600;
}
.cat-card span {
  font-family: var(--font-sans);
  font-size: 12px;
  color: var(--ink-muted);
  letter-spacing: 0.5px;
}

/* ---- ABOUT BLOCK ---- */
.about-block {
  background: #f0f4f8;
  padding: 80px 0;
}
.about-inner {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 50px;
  align-items: center;
  max-width: 900px;
  margin: 0 auto;
}
.about-photo {
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 64px;
  font-weight: 700;
  font-family: var(--font-sans);
  box-shadow: var(--shadow-lg);
}
.about-text h3 {
  font-family: var(--font-serif);
  color: var(--accent);
  font-size: 32px;
  margin-bottom: 18px;
  font-weight: 600;
  letter-spacing: -0.5px;
}
.about-text p {
  color: var(--ink-soft);
  margin-bottom: 18px;
  font-size: 17px;
}
.about-text .more-link {
  display: inline-block;
  margin-top: 6px;
  color: var(--accent);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ---- FOOTER ---- */
footer.site-footer {
  background: var(--ink);
  color: #fff;
  padding: 60px 0 24px;
  font-family: var(--font-sans);
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 50px;
  margin-bottom: 40px;
}
footer h6 {
  font-size: 12px;
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: #cbd5e0;
}
footer .footer-brand {
  font-family: var(--font-serif);
  font-size: 24px;
  color: #fff;
  margin-bottom: 12px;
  font-weight: 600;
}
footer p { color: #a0aec0; line-height: 1.7; }
footer ul { list-style: none; }
footer ul li { margin-bottom: 10px; }
footer a { color: #cbd5e0; }
footer a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: #718096;
}

/* ============================================
   PAGES INTERNES
   ============================================ */

/* Page header (sous le header principal sur pages internes) */
.page-header {
  background: linear-gradient(135deg, #f0f4f8 0%, #e8eef4 100%);
  padding: 70px 0 60px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.page-header .eyebrow {
  font-family: var(--font-sans);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--accent);
  margin-bottom: 16px;
  font-weight: 600;
}
.page-header h1 {
  font-family: var(--font-serif);
  font-size: 48px;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: -1px;
  line-height: 1.1;
  margin-bottom: 12px;
}
.page-header p {
  font-size: 18px;
  color: var(--ink-soft);
  max-width: 600px;
  margin: 0 auto;
}

/* Filtres articles */
.filters {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-bottom: 50px;
  flex-wrap: wrap;
}
.filter-btn {
  background: #fff;
  border: 1px solid var(--border);
  padding: 8px 18px;
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--ink-soft);
  cursor: pointer;
  border-radius: 2px;
  transition: all 0.2s;
  text-decoration: none;
}
.filter-btn:hover, .filter-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ============================================
   ARTICLE (page individuelle)
   ============================================ */
.article-header {
  padding: 60px 0 40px;
  text-align: center;
  background: #fff;
  border-bottom: 1px solid var(--border);
}
.article-header .article-cat {
  font-family: var(--font-sans);
  font-size: 11px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: 700;
  margin-bottom: 18px;
  display: inline-block;
}
.article-header h1 {
  font-family: var(--font-serif);
  font-size: 50px;
  color: var(--ink);
  line-height: 1.15;
  letter-spacing: -1px;
  font-weight: 600;
  max-width: 800px;
  margin: 0 auto 22px;
}
.article-header .article-meta {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--ink-muted);
  letter-spacing: 0.5px;
}
.article-header .article-meta span { margin: 0 8px; }

.article-content {
  padding: 60px 0 80px;
}
.article-content .container-narrow {
  font-size: 18px;
  line-height: 1.8;
}
.article-content h2 {
  font-family: var(--font-serif);
  font-size: 32px;
  color: var(--accent);
  margin: 50px 0 18px;
  font-weight: 600;
  letter-spacing: -0.3px;
}
.article-content h3 {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--ink);
  margin: 36px 0 14px;
  font-weight: 600;
}
.article-content p {
  margin-bottom: 22px;
  color: var(--ink);
}
.article-content blockquote {
  border-left: 4px solid var(--accent);
  padding: 6px 0 6px 28px;
  margin: 30px 0;
  font-style: italic;
  font-size: 22px;
  color: var(--accent);
  font-family: var(--font-serif);
}
.article-content ul, .article-content ol {
  margin: 0 0 22px 28px;
}
.article-content li { margin-bottom: 8px; }
.article-content strong { color: var(--accent); }
.article-content code {
  background: var(--accent-bg);
  padding: 2px 6px;
  border-radius: 3px;
  font-family: var(--font-mono);
  font-size: 0.9em;
  color: var(--accent);
}

/* ============================================
   PAGE CONTACT
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
  max-width: 1000px;
  margin: 0 auto;
}
.contact-info h3 {
  font-family: var(--font-serif);
  font-size: 26px;
  color: var(--accent);
  margin-bottom: 18px;
}
.contact-info p { color: var(--ink-soft); margin-bottom: 28px; }
.contact-info .info-item {
  display: flex;
  gap: 14px;
  align-items: center;
  margin-bottom: 16px;
  padding: 14px 18px;
  background: var(--accent-bg);
  border-radius: 4px;
}
.contact-info .info-item-icon {
  font-size: 20px;
}
.contact-info .info-item strong {
  font-family: var(--font-sans);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--ink-muted);
  display: block;
  margin-bottom: 2px;
}
.contact-info .info-item span {
  font-family: var(--font-sans);
  color: var(--ink);
}

form.contact-form {
  background: #fff;
  padding: 36px;
  border: 1px solid var(--border);
  border-radius: 4px;
}
.form-group { margin-bottom: 22px; }
.form-group label {
  display: block;
  font-family: var(--font-sans);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--ink-soft);
  margin-bottom: 8px;
  font-weight: 600;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 2px;
  font-family: var(--font-body);
  font-size: 15px;
  background: var(--bg);
  color: var(--ink);
  transition: border-color 0.2s;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-group textarea {
  min-height: 140px;
  resize: vertical;
}
button.cta-btn {
  width: 100%;
  background: var(--accent);
  color: #fff;
  border: none;
  padding: 14px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  border-radius: 2px;
  transition: background 0.2s;
}
button.cta-btn:hover { background: var(--accent-light); }

/* ============================================
   PAGE MARCHÉS (widgets)
   ============================================ */
.markets-intro {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 50px;
}
.markets-intro p {
  font-size: 17px;
  color: var(--ink-soft);
}
.market-widget {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 24px;
  margin-bottom: 32px;
}
.market-widget h3 {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--accent);
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.tradingview-widget-container { min-height: 400px; }
.disclaimer {
  background: #fff8e1;
  border-left: 4px solid #f59e0b;
  padding: 18px 22px;
  margin-top: 40px;
  font-size: 14px;
  color: #78350f;
  font-family: var(--font-sans);
  border-radius: 0 4px 4px 0;
}

/* ============================================
   À PROPOS
   ============================================ */
.about-page {
  padding: 80px 0;
}
.about-page .container-narrow {
  font-size: 17px;
  line-height: 1.8;
}
.about-page-photo {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 56px;
  font-weight: 700;
  font-family: var(--font-sans);
  margin: 0 auto 36px;
  box-shadow: var(--shadow-lg);
}
.about-page h2 {
  font-family: var(--font-serif);
  font-size: 32px;
  color: var(--accent);
  margin: 40px 0 16px;
  font-weight: 600;
}
.about-page p {
  margin-bottom: 22px;
  color: var(--ink);
}
.about-page .signature {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--accent);
  font-style: italic;
  margin-top: 30px;
}
.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 40px;
}
.skill-tag {
  background: var(--accent-bg);
  color: var(--accent);
  padding: 6px 14px;
  border-radius: 20px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .about-inner { grid-template-columns: 1fr; text-align: center; }
  .about-photo { margin: 0 auto; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero h2 { font-size: 42px; }
  .article-header h1 { font-size: 36px; }
  .page-header h1 { font-size: 36px; }
  .section-head h3 { font-size: 26px; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .topbar { font-size: 11.5px; }
  .topbar .container { flex-direction: column; align-items: center; gap: 6px; text-align: center; }
  header.site-header .container { flex-wrap: wrap; gap: 16px; }
  nav.main-nav { display: none; width: 100%; }
  nav.main-nav.open { display: block; }
  nav.main-nav ul { flex-direction: column; gap: 14px; padding-top: 18px; }
  .nav-toggle { display: block; }
  .grid { grid-template-columns: 1fr; }
  .hero { padding: 60px 0 70px; }
  .hero h2 { font-size: 34px; }
  .hero p.lead { font-size: 17px; }
  section { padding: 60px 0; }
  .cta-secondary { display: block; margin: 14px auto 0; max-width: 250px; }
  .article-header h1 { font-size: 28px; }
  .article-content .container-narrow { font-size: 17px; }
  form.contact-form { padding: 24px; }
}