/* RESET & BASE */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
img, video, svg { display: block; max-width: 100%; height: auto; }
.img-hero     { aspect-ratio: 16/9; overflow: hidden; }
.img-card     { aspect-ratio: 3/2;  overflow: hidden; }
.img-body     { aspect-ratio: 3/2;  overflow: hidden; }
.img-portrait { aspect-ratio: 1/1;  overflow: hidden; border-radius: 50%; }
.img-hero img, .img-card img, .img-body img, .img-portrait img {
  width: 100%; height: 100%; object-fit: cover; object-position: center top;
}
:root {
  --inbox:         #1A1F36;
  --signal:        #4F46E5;
  --signal-clair:  #E0E7FF;
  --signal-sombre: #3730A3;
  --ivory:         #FFFDF8;
  --parchment:     #F8F9FF;
  --ardoise:       #374151;
  --gris-chaud:    #6B7280;
  --emeraude:      #059669;
  --ambre:         #D97706;
  --rouge:         #DC2626;
  --border:        #E2E8F0;
  --border-warm:   #C7D2FE;
  --signal-80: rgba(79,70,229,.80);
  --signal-40: rgba(79,70,229,.40);
  --signal-20: rgba(79,70,229,.20);
  --signal-10: rgba(79,70,229,.10);
  --signal-06: rgba(79,70,229,.06);
  --inbox-80:  rgba(26,31,54,.80);
  --inbox-60:  rgba(26,31,54,.60);
  --inbox-40:  rgba(26,31,54,.40);
  --inbox-20:  rgba(26,31,54,.20);
  --inbox-10:  rgba(26,31,54,.10);
  --ff-display: 'Space Grotesk', 'Trebuchet MS', sans-serif;
  --ff-body:    'Literata', Georgia, serif;
  --ff-mono:    'JetBrains Mono', 'Courier New', monospace;
  --measure-article: 700px;
  --measure-wide:    1280px;
  --measure-hero:    1440px;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --ease:     cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast: 250ms;
  --dur:      450ms;
  --dur-slow: 650ms;
  --shadow-sm: 0 1px 3px rgba(26,31,54,.08), 0 1px 2px rgba(79,70,229,.04);
  --shadow-md: 0 4px 12px rgba(26,31,54,.10), 0 2px 6px rgba(79,70,229,.06);
  --shadow-lg: 0 8px 32px rgba(26,31,54,.12), 0 4px 16px rgba(79,70,229,.08);
}
html { font-family: var(--ff-body); font-size: clamp(16px, 1.1vw, 18px); line-height: 1.7; color: var(--ardoise); background: var(--ivory); scroll-behavior: smooth; }
body { min-height: 100vh; display: flex; flex-direction: column; }
h1,h2,h3,h4,h5,h6 { font-family: var(--ff-display); line-height: 1.2; color: var(--inbox); font-weight: 700; }
h1 { font-size: clamp(2rem,5vw,3.2rem); font-weight: 800; }
h2 { font-size: clamp(1.5rem,3vw,2.2rem); }
h3 { font-size: clamp(1.2rem,2vw,1.6rem); }
h4 { font-size: 1.2rem; font-weight: 600; }
p { margin-bottom: 1.2rem; }
a { color: var(--signal); text-decoration: none; }
a:hover { text-decoration: underline; color: var(--signal-sombre); }
code,pre { font-family: var(--ff-mono); font-size: 0.88rem; }
code { background: var(--signal-10); color: var(--signal-sombre); padding: 0.15em 0.45em; border-radius: 4px; }
pre { background: var(--inbox); color: #e0e7ff; padding: 1.2rem; border-radius: 8px; overflow-x: auto; margin-bottom: 1.5rem; }
pre code { background: none; color: inherit; padding: 0; }
ul,ol { padding-left: 1.5rem; margin-bottom: 1.2rem; }
li { margin-bottom: 0.4rem; }
blockquote { border-left: 4px solid var(--signal); background: var(--parchment); padding: 1rem 1.5rem; margin: 1.5rem 0; font-style: italic; color: var(--inbox); }
hr { border: none; border-top: 1px solid var(--border); margin: 2rem 0; }
main { flex: 1; }
.container { width: 100%; max-width: var(--measure-wide); margin-left: auto; margin-right: auto; padding-left: var(--gutter); padding-right: var(--gutter); }
.container--article { max-width: var(--measure-article); }
/* HEADER */
.site-header { background: var(--inbox); border-bottom: 2px solid var(--signal); position: sticky; top: 0; z-index: 100; box-shadow: var(--shadow-md); }
.site-header__inner { display: flex; align-items: center; justify-content: space-between; padding: 0.9rem var(--gutter); max-width: var(--measure-wide); margin: auto; }
.site-logo { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; font-family: var(--ff-display); font-weight: 800; font-size: 1.2rem; color: var(--ivory); letter-spacing: -0.02em; }
.site-logo__at { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; background: var(--signal); border-radius: 8px; font-size: 1.1rem; font-family: var(--ff-mono); color: #fff; font-weight: 500; }
.site-nav { display: flex; align-items: center; gap: 2rem; }
.site-nav a { font-family: var(--ff-display); font-size: 0.92rem; font-weight: 600; color: rgba(255,255,255,.85); text-decoration: none; transition: color var(--dur-fast) var(--ease); }
.site-nav a:hover { color: var(--signal-clair); text-decoration: none; }
.btn-nav { background: var(--signal) !important; color: #fff !important; padding: 0.45rem 1rem !important; border-radius: 6px !important; }
.hamburger { display: none; background: none; border: none; color: #fff; cursor: pointer; flex-direction: column; gap: 5px; padding: 4px; }
.hamburger span { display: block; width: 24px; height: 2px; background: #fff; border-radius: 2px; }
@media (max-width: 768px) {
  .hamburger { display: flex; }
  .site-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--inbox); flex-direction: column; align-items: flex-start; padding: 1rem var(--gutter); gap: 1rem; border-top: 1px solid var(--signal-40); }
  .site-nav.open { display: flex; }
}
/* FOOTER */
.site-footer { background: var(--inbox); color: rgba(255,255,255,.75); padding: 3rem var(--gutter) 1.5rem; margin-top: 4rem; }
.site-footer__grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(180px,1fr)); gap: 2rem; max-width: var(--measure-wide); margin: auto; }
.site-footer__brand { display: flex; flex-direction: column; }
.site-footer__logo { font-family: var(--ff-display); font-weight: 800; font-size: 1.1rem; color: #fff; margin-bottom: 0.6rem; }
.site-footer__tagline { font-size: 0.85rem; color: rgba(255,255,255,.55); line-height: 1.5; }
.site-footer h4 { font-family: var(--ff-display); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--signal-clair); margin-bottom: 0.8rem; font-weight: 700; }
.site-footer ul { list-style: none; padding: 0; }
.site-footer li { margin-bottom: 0.5rem; }
.site-footer a { color: rgba(255,255,255,.65); text-decoration: none; font-size: 0.88rem; }
.site-footer a:hover { color: var(--signal-clair); }
.site-footer__bottom { border-top: 1px solid rgba(26,31,54,.6); margin-top: 2rem; padding-top: 1rem; text-align: center; font-size: 0.8rem; color: rgba(255,255,255,.4); }
/* HERO HOME */
.hero-home { background: var(--inbox); min-height: 70vh; display: flex; align-items: center; position: relative; overflow: hidden; }
.hero-home__img { position: absolute; inset: 0; }
.hero-home__img img { width: 100%; height: 100%; object-fit: cover; object-position: center; }
.hero-home__overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(26,31,54,.88) 0%, rgba(26,31,54,.72) 50%, rgba(79,70,229,.45) 100%); pointer-events: none; }
.hero-home__inner { max-width: var(--measure-wide); margin: auto; padding: 4rem var(--gutter); position: relative; z-index: 1; }
.kicker { font-family: var(--ff-mono); font-size: 0.7rem; font-weight: 500; color: var(--signal-clair); text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 1rem; display: flex; align-items: center; gap: 0.5rem; }
.kicker::before { content: '>'; color: var(--signal); font-weight: 700; }
.hero-home__title { font-size: clamp(2.5rem,5.5vw,4rem); font-weight: 800; color: #fff; line-height: 1.1; margin-bottom: 1.2rem; max-width: 800px; }
.hero-home__title span { color: var(--signal-clair); }
.hero-home__desc { font-size: clamp(1rem,1.5vw,1.2rem); color: rgba(255,255,255,.75); max-width: 580px; margin-bottom: 2rem; font-family: var(--ff-display); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 1rem; }
.btn-primary { display: inline-flex; align-items: center; gap: 0.5rem; background: var(--signal); color: #fff; padding: 0.85rem 2rem; border-radius: 8px; font-family: var(--ff-display); font-weight: 700; font-size: 1rem; text-decoration: none; transition: background var(--dur-fast), transform var(--dur-fast); }
.btn-primary:hover { background: var(--signal-sombre); transform: translateY(-2px); text-decoration: none; color: #fff; }
.btn-secondary { display: inline-flex; align-items: center; gap: 0.5rem; background: transparent; color: #fff; padding: 0.85rem 2rem; border-radius: 8px; border: 2px solid rgba(255,255,255,.3); font-family: var(--ff-display); font-weight: 600; font-size: 1rem; text-decoration: none; }
.btn-secondary:hover { border-color: #fff; background: rgba(255,255,255,.1); text-decoration: none; color: #fff; }
/* HERO ARTICLE */
.hero-article { background: var(--parchment); border-bottom: 1px solid var(--border); padding: 2rem 0 0; }
.hero-article__inner { max-width: var(--measure-wide); margin: auto; padding: 0 var(--gutter); }
.breadcrumb { font-family: var(--ff-mono); font-size: 0.75rem; color: var(--gris-chaud); margin-bottom: 1.5rem; display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap; }
.breadcrumb a { color: var(--signal); text-decoration: none; }
.hero-article__kicker { font-family: var(--ff-mono); font-size: 0.7rem; color: var(--signal); text-transform: uppercase; letter-spacing: 0.12em; margin-bottom: 0.7rem; display: flex; align-items: center; gap: 0.4rem; }
.hero-article__kicker::before { content: '>'; }
.hero-article__img { margin-top: 1.5rem; border-radius: 10px; overflow: hidden; }
.hero-article__title { font-size: clamp(1.8rem,4vw,3rem); font-weight: 800; color: var(--inbox); margin-bottom: 1rem; max-width: var(--measure-article); }
/* ARTICLE BODY */
.article-wrapper { display: grid; grid-template-columns: minmax(0, var(--measure-article)) 280px; gap: 0 2.5rem; max-width: calc(var(--measure-article) + 280px + 2.5rem); margin: 0 auto; padding: 2rem var(--gutter); }
@media (max-width: 1100px) { .article-wrapper { grid-template-columns: 1fr; } .article-toc { display: none !important; } }
@media (min-width: 1101px) { nav.toc { display: none; } }
.article-summary { background: var(--parchment); border-left: 4px solid var(--signal-clair); padding: 1.2rem 1.5rem; margin-bottom: 2rem; border-radius: 0 8px 8px 0; font-style: italic; color: var(--inbox); font-size: 1.05rem; }
.article-body h2 { position: relative; padding-bottom: 0.5rem; margin-top: 2.5rem; margin-bottom: 1rem; }
.article-body h2::after { content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 3px; background: var(--signal); transform: scaleX(0); transform-origin: left; transition: transform var(--dur) var(--ease); }
.article-body h2.visible::after { transform: scaleX(1); }
.pull-quote { border-left: 4px solid var(--signal); background: var(--parchment); padding: 1rem 1.5rem; margin: 2rem 0; font-style: italic; font-size: 1.15rem; color: var(--inbox); }
/* TOC inline (dans le corps de l'article) */
nav.toc { background: var(--parchment); border: 1px solid var(--border-warm); border-left: 4px solid var(--signal); border-radius: 8px; padding: 1.2rem 1.5rem; margin: 2rem 0; }
nav.toc .toc-title { font-family: var(--ff-display); font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--signal); margin-bottom: 0.7rem; }
nav.toc ol { margin: 0; padding-left: 1.2rem; }
nav.toc li { margin: 0.3rem 0; }
nav.toc a { color: var(--ardoise); text-decoration: none; font-size: 0.92rem; }
nav.toc a:hover { color: var(--signal); text-decoration: underline; }
/* TOC sidebar */
.article-toc { position: sticky; top: 80px; align-self: start; background: var(--parchment); border: 1px solid var(--border-warm); border-radius: 10px; padding: 1.2rem; font-size: 0.85rem; }
.article-toc__title { font-family: var(--ff-display); font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--gris-chaud); margin-bottom: 0.8rem; }
.article-toc ul { list-style: none; padding: 0; border-left: 2px solid var(--border-warm); }
.article-toc li { margin: 0; }
.article-toc a { display: block; padding: 0.3rem 0.8rem; color: var(--ardoise); text-decoration: none; border-radius: 0 4px 4px 0; }
.article-toc a:hover { color: var(--signal); background: var(--signal-06); }
.article-toc a.active { color: var(--signal); font-weight: 600; }
/* FAQ */
.faq { margin: 3rem 0; }
.faq__title { font-family: var(--ff-display); font-size: 1.5rem; font-weight: 700; color: var(--inbox); margin-bottom: 1.2rem; }
.faq-item { border: 1px solid var(--border); border-radius: 8px; margin-bottom: 0.6rem; overflow: hidden; }
.faq-item__question { width: 100%; background: none; border: none; text-align: left; padding: 1rem 1.2rem; font-family: var(--ff-display); font-size: 1rem; font-weight: 600; color: var(--inbox); cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.faq-item__question:hover { background: var(--signal-06); }
.faq-item__icon { width: 22px; height: 22px; border-radius: 50%; background: var(--signal-10); color: var(--signal); display: flex; align-items: center; justify-content: center; font-size: 1.1rem; flex-shrink: 0; transition: transform var(--dur-fast), background var(--dur-fast); }
.faq-item.open .faq-item__icon { transform: rotate(45deg); background: var(--signal); color: #fff; }
.faq-item__answer { display: none; padding: 0 1.2rem 1rem; color: var(--ardoise); font-size: 0.96rem; line-height: 1.7; }
.faq-item.open .faq-item__answer { display: block; }
/* CARDS */
.cards-grid { display: grid; grid-template-columns: repeat(auto-fill,minmax(280px,1fr)); gap: 1.5rem; }
.card { background: #fff; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; box-shadow: var(--shadow-sm); transition: transform var(--dur-fast), box-shadow var(--dur-fast); display: flex; flex-direction: column; }
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.card__body { padding: 1.2rem; flex: 1; display: flex; flex-direction: column; }
.card__badge { display: inline-block; font-family: var(--ff-mono); font-size: 0.68rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.1em; padding: 0.2em 0.6em; border-radius: 4px; margin-bottom: 0.6rem; }
.badge-strategie   { background: rgba(79,70,229,.10); color: #3730A3; }
.badge-delivrabilite { background: rgba(5,150,105,.10); color: #059669; }
.badge-outils      { background: rgba(217,119,6,.10); color: #D97706; }
.badge-automation  { background: rgba(79,70,229,.08); color: #4F46E5; }
.badge-rgpd        { background: rgba(220,38,38,.08); color: #DC2626; }
.badge-copywriting { background: rgba(26,31,54,.08); color: #1A1F36; }
.badge-b2b         { background: rgba(55,65,81,.08); color: #374151; }
.badge-analyse     { background: rgba(79,70,229,.10); color: #3730A3; }
.card__title { font-family: var(--ff-display); font-size: 1.1rem; font-weight: 700; color: var(--inbox); margin-bottom: 0.5rem; line-height: 1.3; }
.card__desc { font-size: 0.88rem; color: var(--gris-chaud); line-height: 1.6; flex: 1; }
.card__link { display: inline-flex; align-items: center; gap: 0.3rem; font-family: var(--ff-display); font-size: 0.85rem; font-weight: 600; color: var(--signal); text-decoration: none; margin-top: 0.8rem; }
.card__link:hover { gap: 0.6rem; text-decoration: none; }
.card__link::after { content: '\2192'; }
/* SECTIONS */
.section { padding: 4rem 0; }
.section-title { font-family: var(--ff-display); font-size: clamp(1.6rem,3vw,2.4rem); font-weight: 800; color: var(--inbox); margin-bottom: 0.5rem; }
.section-intro { max-width: 640px; color: var(--gris-chaud); font-size: 1rem; margin-bottom: 2.5rem; line-height: 1.7; }
.section-cta { background: var(--signal); padding: 4rem var(--gutter); text-align: center; }
.section-cta__title { font-family: var(--ff-display); font-size: clamp(1.6rem,3vw,2.4rem); font-weight: 800; color: #fff; margin-bottom: 0.8rem; }
.section-cta__desc { font-size: 1.05rem; color: rgba(255,255,255,.85); max-width: 500px; margin: 0 auto 1.5rem; }
.btn-white { display: inline-flex; align-items: center; gap: 0.5rem; background: #fff; color: var(--signal); padding: 0.85rem 2rem; border-radius: 8px; font-family: var(--ff-display); font-weight: 700; font-size: 1rem; text-decoration: none; }
.btn-white:hover { background: var(--signal-clair); transform: translateY(-2px); text-decoration: none; color: var(--signal-sombre); }
/* INTRO EDITO */
.intro-edito { background: var(--parchment); border-bottom: 1px solid var(--border); padding: 3.5rem 0; }
.intro-edito__inner { max-width: var(--measure-wide); margin: auto; padding: 0 var(--gutter); display: grid; grid-template-columns: 2fr 1fr; gap: 2rem; }
@media (max-width: 768px) { .intro-edito__inner { grid-template-columns: 1fr; } }
.stat-box { background: #fff; border: 1px solid var(--border-warm); border-radius: 10px; padding: 1.2rem; margin-bottom: 0.8rem; display: flex; align-items: center; gap: 1rem; }
.stat-box__icon { width: 44px; height: 44px; background: var(--signal-10); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; flex-shrink: 0; }
.stat-box__num { font-family: var(--ff-display); font-size: 1.5rem; font-weight: 800; color: var(--signal); }
.stat-box__label { font-size: 0.82rem; color: var(--gris-chaud); }
/* BLOG FILTRES */
.filter-bar { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 2rem; }
.filter-btn { font-family: var(--ff-mono); font-size: 0.75rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.08em; padding: 0.4em 0.9em; border-radius: 20px; border: 1px solid var(--border); background: #fff; color: var(--gris-chaud); cursor: pointer; transition: all var(--dur-fast); }
.filter-btn:hover, .filter-btn.active { background: var(--signal); color: #fff; border-color: var(--signal); }
.card.hidden { display: none !important; }
/* RELATED PAGES */
.related-pages { background: var(--parchment); border-top: 1px solid var(--border); padding: 2rem 0; margin-top: 3rem; }
.related-pages__title { font-family: var(--ff-display); font-size: 1rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--gris-chaud); margin-bottom: 1rem; }
.related-pages__list { display: flex; flex-wrap: wrap; gap: 0.7rem; list-style: none; padding: 0; }
.related-pages__list a { display: inline-flex; align-items: center; font-size: 0.88rem; font-family: var(--ff-display); font-weight: 600; color: var(--signal); background: var(--signal-06); padding: 0.35em 0.8em; border-radius: 6px; border: 1px solid var(--border-warm); text-decoration: none; }
.related-pages__list a:hover { background: var(--signal-20); }
/* REVEAL & UTILITY */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease); }
.reveal.visible { opacity: 1; transform: translateY(0); }
.text-center { text-align: center; }
.mt-2 { margin-top: 1rem; }
.mt-4 { margin-top: 2rem; }
.mb-4 { margin-bottom: 2rem; }
.not-found { min-height: 60vh; display: flex; align-items: center; justify-content: center; text-align: center; padding: 3rem var(--gutter); flex-direction: column; }
.not-found__code { font-family: var(--ff-mono); font-size: 6rem; font-weight: 700; color: var(--signal-20); line-height: 1; margin-bottom: 1rem; }
@media (max-width: 768px) { .cards-grid { grid-template-columns: 1fr; } .hero-home__inner { padding: 3rem var(--gutter); } .section { padding: 2.5rem 0; } }