/* ══════════════════════════════════════════════════════════════════════════
   Cursus Landing - style.css
   ══════════════════════════════════════════════════════════════════════════ */

/* ── Theme variables ──────────────────────────────────────────────────── */
:root {
  --bg:            #f9fafb;
  --bg-card:       #ffffff;
  --bg-card-hover: #f3f4f6;
  --bg-hover:      rgba(0,0,0,.05);
  --accent:        #3b82f6;
  --accent-dim:    rgba(59,130,246,.1);
  --accent-glow:   rgba(59,130,246,.2);
  --purple:        #7c3aed;
  --green:         #059669;
  --orange:        #d97706;
  --red:           #dc2626;
  --text:          #111827;
  --text-2:        #6b7280;
  --text-3:        #9ca3af;
  --border:        rgba(0,0,0,.08);
  --border-2:      rgba(0,0,0,.14);
  --r:             14px;
  --r-sm:          9px;
  --font:          'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --nav-bg:        rgba(249,250,251,.85);
  --card-bg:       rgba(255,255,255,.8);
  --card-border:   rgba(0,0,0,.08);
  --demo-bg:       #ffffff;
  --demo-sidebar-bg: #f9fafb;
  --demo-titlebar-bg: #f3f4f6;
  --demo-input-bg: #f9fafb;
  --code-bg:       rgba(0,0,0,.06);
  --dot-color:     rgba(0,0,0,.12);
}

[data-theme="dark"] {
  --bg:            #181a1b;
  --bg-card:       #232628;
  --bg-card-hover: #2a2d2f;
  --bg-hover:      rgba(255,255,255,.08);
  --accent:        #60a5fa;
  --accent-dim:    rgba(96,165,250,.12);
  --accent-glow:   rgba(96,165,250,.2);
  --purple:        #a78bfa;
  --green:         #34d399;
  --orange:        #fbbf24;
  --red:           #f87171;
  --text:          #e8e6e3;
  --text-2:        #b1aaa0;
  --text-3:        #8a8279;
  --border:        rgba(140,130,115,.15);
  --border-2:      rgba(140,130,115,.22);
  --r:             14px;
  --r-sm:          9px;
  --nav-bg:        rgba(24,26,27,.85);
  --card-bg:       rgba(35,38,40,.8);
  --card-border:   rgba(140,130,115,.1);
  --demo-bg:       #1c1e1f;
  --demo-sidebar-bg: #1a1c1d;
  --demo-titlebar-bg: #222425;
  --demo-input-bg: #1a1c1d;
  --code-bg:       rgba(255,255,255,.08);
  --dot-color:     rgba(255,255,255,.06);
}

/* ── Smooth theme transition ──────────────────────────────────────────── */
*, *::before, *::after {
  transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

/* ── Base ─────────────────────────────────────────────────────────────── */
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  line-height: 1.6;
  position: relative;
}

/* Dot grid background */
body::before {
  content: '';
  position: fixed; inset: 0;
  background-image: radial-gradient(circle, var(--dot-color) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none; z-index: 0;
  mask-image: linear-gradient(to bottom, transparent, black 8%, black 92%, transparent);
}

a { color: var(--accent); text-decoration: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 32px; position: relative; z-index: 1; }

/* ── NAV ──────────────────────────────────────────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  padding: 14px 0;
  background: var(--nav-bg);
  backdrop-filter: blur(20px) saturate(1.6);
  border-bottom: 1px solid var(--border);
}
.nav .container { display: flex; align-items: center; }
.nav-logo { display: flex; align-items: center; gap: 8px; font-size: 18px; font-weight: 800; letter-spacing: -.4px; color: var(--text); text-decoration: none; }
.nav-logo img { width: 30px; height: 30px; object-fit: contain; }
.nav-links { display: flex; gap: 4px; margin-left: auto; margin-right: 16px; }
.nav-links a { padding: 6px 13px; font-size: 13px; font-weight: 500; color: var(--text-2); border-radius: var(--r-sm); transition: color .15s, background .15s; }
.nav-links a:hover { color: var(--text); background: var(--bg-hover); }
.nav-cta { padding: 8px 20px; background: var(--accent); color: #fff !important; border-radius: var(--r-sm); font-size: 13px; font-weight: 700; transition: opacity .15s; }
.nav-cta:hover { opacity: .85; }

/* ── Theme toggle pill ────────────────────────────────────────────────── */
.theme-pill {
  background: none; border: none; cursor: pointer;
  padding: 0; margin-right: 12px;
  display: flex; align-items: center;
}
.theme-pill-track {
  display: flex; align-items: center;
  width: 56px; height: 28px; padding: 3px;
  background: rgba(0,0,0,.08);
  border-radius: 14px; position: relative;
  transition: background 0.3s ease;
}
[data-theme="dark"] .theme-pill-track {
  background: rgba(255,255,255,.1);
}
.theme-pill-knob {
  position: absolute; left: 3px; top: 3px;
  width: 22px; height: 22px;
  background: #fff; border-radius: 50%;
  box-shadow: 0 1px 4px rgba(0,0,0,.2);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 2;
}
[data-theme="dark"] .theme-pill-knob {
  transform: translateX(28px);
  background: #1c1e1f;
  box-shadow: 0 1px 4px rgba(0,0,0,.5);
}
.theme-pill-icon {
  display: flex; align-items: center; justify-content: center;
  width: 22px; height: 22px; position: relative; z-index: 1;
  transition: opacity 0.3s ease, color 0.3s ease;
}
.theme-pill-sun {
  color: #f59e0b; margin-left: 1px;
}
.theme-pill-moon {
  color: var(--text-3); margin-left: 4px;
}
[data-theme="dark"] .theme-pill-sun { color: var(--text-3); }
[data-theme="dark"] .theme-pill-moon { color: #a5b4fc; }

/* ── HERO ─────────────────────────────────────────────────────────────── */
.hero { padding: 120px 0 80px; position: relative; overflow: hidden; }
.hero-glow {
  position: absolute; top: -80px; right: -100px;
  width: 700px; height: 600px;
  background: radial-gradient(ellipse at 70% 30%, var(--accent-glow) 0%, transparent 60%);
  pointer-events: none;
}
.hero-inner {
  display: grid; grid-template-columns: 1fr 1.3fr;
  gap: 48px; align-items: center;
}
.hero-left { display: flex; flex-direction: column; align-items: flex-start; text-align: left; }

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 5px 14px 5px 10px;
  border: 1px solid var(--border-2); border-radius: 100px;
  font-size: 12px; font-weight: 600; color: var(--text-2);
  margin-bottom: 28px; background: var(--bg-card);
  box-shadow: 0 1px 3px rgba(0,0,0,.06);
}
.hero-eyebrow-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--green); box-shadow: 0 0 6px rgba(5,150,105,.4);
  animation: blink 2.5s ease-in-out infinite;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:.4} }

.hero h1 {
  font-size: clamp(40px, 5vw, 64px); font-weight: 900;
  letter-spacing: -2px; line-height: 1.05;
  margin-bottom: 20px; color: var(--text);
}
.hero-sub {
  font-size: 17px; color: var(--text-2); max-width: 460px;
  margin-bottom: 32px; line-height: 1.6;
}

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; border-radius: 10px;
  font-family: var(--font); font-size: 14px; font-weight: 600;
  cursor: pointer; transition: all .2s cubic-bezier(.4,0,.2,1);
  border: none; text-decoration: none;
}
.btn-dark {
  background: var(--accent); color: #fff;
  box-shadow: 0 2px 8px rgba(59,130,246,.3);
}
.btn-dark:hover {
  box-shadow: 0 4px 16px rgba(59,130,246,.4);
  transform: translateY(-1px);
}
.btn-outline {
  background: rgba(255,255,255,.06); color: var(--text-2);
  border: 1px solid var(--border-2);
}
.btn-outline:hover {
  color: var(--text); background: rgba(255,255,255,.1);
  border-color: var(--text-3);
}

/* ── DEMO WINDOW ──────────────────────────────────────────────────────── */
.demo-wrapper { position: relative; }
.demo-wrapper::after {
  content: '';
  position: absolute; bottom: -40px; left: 10%; right: 10%; height: 60px;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
  filter: blur(20px); pointer-events: none;
}
.demo-wrapper { width: 100%; }
.demo-window {
  background: var(--demo-bg);
  border: 1px solid var(--border-2);
  border-radius: 16px; overflow: hidden;
  box-shadow: 0 24px 60px rgba(0,0,0,.1), 0 4px 12px rgba(0,0,0,.06);
  text-align: left;
  width: 100%;
}
.demo-titlebar {
  display: flex; align-items: center; gap: 6px;
  padding: 12px 16px;
  background: var(--demo-titlebar-bg);
  border-bottom: 1px solid var(--border);
}
.demo-dot { width: 11px; height: 11px; border-radius: 50%; }
.demo-tabs {
  display: flex; gap: 2px; padding: 10px 12px 0;
  background: var(--demo-sidebar-bg); border-bottom: 1px solid var(--border);
}
.demo-tab {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 16px 9px; font-size: 12.5px; font-weight: 600;
  color: var(--text-3); cursor: pointer;
  border-radius: 8px 8px 0 0; border: 1px solid transparent; border-bottom: none;
  transition: color .2s, background .2s; user-select: none;
}
.demo-tab svg { width: 13px; height: 13px; }
.demo-tab.active { color: var(--text); background: var(--demo-bg); border-color: var(--border); border-bottom-color: var(--demo-bg); }
.demo-tab:not(.active):hover { color: var(--text-2); background: var(--bg-hover); }
.demo-progress { height: 2px; background: var(--border); position: relative; overflow: hidden; }
.demo-progress-bar {
  height: 100%; background: linear-gradient(90deg, var(--accent), var(--purple));
  width: 0%; transition: width 0.1s linear;
}
.demo-body { display: flex; height: 360px; }
.demo-sidebar {
  width: 180px; flex-shrink: 0;
  background: var(--demo-sidebar-bg); border-right: 1px solid var(--border);
  padding: 14px 10px; overflow-y: auto;
}
.demo-sidebar-title { font-size: 9.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .9px; color: var(--text-3); margin-bottom: 6px; padding: 0 6px; }
.demo-channel {
  display: flex; align-items: center; gap: 5px;
  padding: 5px 8px; border-radius: 6px; font-size: 12px;
  color: var(--text-2); cursor: pointer; transition: background .15s;
  position: relative;
}
.demo-channel.active { background: var(--accent-dim); color: var(--accent); font-weight: 600; }
.demo-channel:hover:not(.active) { background: var(--bg-hover); }
.demo-channel-hash { opacity: .5; font-size: 11px; }
.demo-channel-badge {
  margin-left: auto; min-width: 16px; height: 16px; padding: 0 4px;
  border-radius: 8px; background: var(--accent); color: #fff;
  font-size: 9px; font-weight: 800; display: flex; align-items: center; justify-content: center;
}
.demo-main { flex: 1; padding: 18px 20px; display: flex; flex-direction: column; background: var(--demo-bg); overflow: hidden; }
.demo-content { overflow: hidden; }

/* ── Reactions ────────────────────────────────────────────────────────── */
.msg-reactions { display: flex; gap: 4px; margin-top: 6px; flex-wrap: wrap; }
.reaction {
  display: inline-flex; align-items: center; gap: 3px;
  font-size: 11px; padding: 2px 8px; border-radius: 100px;
  background: var(--bg-hover); border: 1px solid var(--border-2);
  cursor: pointer; transition: all .15s; user-select: none;
}
.reaction:hover { background: var(--accent-dim); border-color: rgba(59,130,246,.25); }
.reaction.active { background: var(--accent-dim); border-color: rgba(59,130,246,.4); color: var(--accent); }
.reaction-count { font-weight: 700; font-size: 10px; }
.reaction-add {
  display: inline-flex; align-items: center; justify-content: center;
  width: 22px; height: 22px; border-radius: 100px;
  background: transparent; border: 1px dashed var(--border-2);
  cursor: pointer; font-size: 12px; transition: all .15s; color: var(--text-3);
  opacity: 0;
}
.chat-msg:hover .reaction-add { opacity: 1; }
.reaction-add:hover { background: var(--bg-hover); border-color: var(--border-2); }

/* ── Devoir check interactive ─────────────────────────────────────────── */
.devoir-check { cursor: pointer; transition: background .2s, border-color .2s; }
.devoir-check:hover:not(.done) { border-color: var(--green); }
.devoir-row.strikethrough .devoir-name { text-decoration: line-through; color: var(--text-3); }

/* ── Doc download feedback ────────────────────────────────────────────── */
.doc-dl-done { background: rgba(5,150,105,.12) !important; border-color: rgba(5,150,105,.3) !important; }
.doc-dl-done svg { color: var(--green) !important; }

/* ── Chat ─────────────────────────────────────────────────────────────── */
.chat-messages { display: flex; flex-direction: column; gap: 12px; flex: 1; overflow: hidden; }
.chat-msg {
  display: flex; gap: 9px; align-items: flex-start;
  opacity: 0; transform: translateY(8px);
  transition: opacity .35s ease, transform .35s ease;
}
.chat-msg.visible { opacity: 1; transform: translateY(0); }
.chat-av { width: 28px; height: 28px; border-radius: 7px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; font-size: 10px; font-weight: 800; color: #fff; }
.chat-name { font-size: 11.5px; font-weight: 700; margin-bottom: 2px; color: var(--text); }
.chat-time { font-size: 10px; color: var(--text-3); margin-left: 6px; font-weight: 400; }
.chat-text { font-size: 12.5px; color: var(--text-2); line-height: 1.55; }
.chat-text code { font-size: 11px; background: var(--code-bg); padding: 1px 5px; border-radius: 3px; font-family: 'SF Mono', 'Fira Code', monospace; color: var(--text); }
.chat-text strong { color: var(--text); font-weight: 700; }
.chat-pill {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 11px; font-weight: 600; padding: 2px 9px; border-radius: 4px;
  background: var(--accent-dim); color: var(--accent); margin-top: 5px;
}
.chat-input-row {
  margin-top: 14px; display: flex; align-items: center; gap: 8px;
  background: var(--demo-input-bg); border: 1px solid var(--border-2); border-radius: 8px; padding: 9px 12px;
}
.chat-input-text { flex: 1; font-size: 12px; color: var(--text-2); font-family: var(--font); }
.chat-cursor { display: inline-block; width: 2px; height: 13px; background: var(--accent); vertical-align: middle; margin-left: 1px; animation: cursor-blink .8s step-end infinite; }
@keyframes cursor-blink { 0%,100%{opacity:1} 50%{opacity:0} }
.typing-indicator { display: flex; align-items: center; gap: 6px; font-size: 11px; color: var(--text-3); min-height: 18px; margin-top: 4px; }
.typing-dots { display: flex; gap: 3px; }
.typing-dots span { width: 4px; height: 4px; border-radius: 50%; background: var(--text-3); animation: tdot 1.2s ease-in-out infinite; }
.typing-dots span:nth-child(2) { animation-delay: .2s; }
.typing-dots span:nth-child(3) { animation-delay: .4s; }
@keyframes tdot { 0%,80%,100%{transform:translateY(0)} 40%{transform:translateY(-4px)} }

/* ── Devoirs ──────────────────────────────────────────────────────────── */
.devoirs-panel { display: none; flex-direction: column; gap: 0; }
.devoirs-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.devoirs-title { font-size: 14px; font-weight: 700; color: var(--text); }
.devoirs-count { font-size: 11px; color: var(--text-3); }
.devoir-row {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 0; border-bottom: 1px solid var(--border);
  opacity: 0; transform: translateX(-8px);
  transition: opacity .3s ease, transform .3s ease;
}
.devoir-row.visible { opacity: 1; transform: translateX(0); }
.devoir-row:last-child { border-bottom: none; }
.devoir-check {
  width: 16px; height: 16px; border-radius: 4px;
  border: 1.5px solid var(--border-2); flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
}
.devoir-check.done { background: var(--green); border-color: var(--green); }
.devoir-check.done::after { content: '\2713'; font-size: 9px; color: #fff; font-weight: 800; }
.devoir-info { flex: 1; }
.devoir-name { font-size: 13px; font-weight: 600; color: var(--text); }
.devoir-sub { font-size: 11px; color: var(--text-3); }
.devoir-badge { font-size: 10.5px; font-weight: 700; padding: 3px 10px; border-radius: 5px; }
.badge-urgent { background: rgba(217,119,6,.1); color: var(--orange); }
.badge-ok     { background: rgba(5,150,105,.1); color: var(--green); }
.badge-late   { background: rgba(220,38,38,.08); color: var(--red); }
.badge-done   { background: var(--bg-hover); color: var(--text-3); }

/* ── Documents ────────────────────────────────────────────────────────── */
.docs-panel { display: none; flex-direction: column; gap: 0; }
.docs-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.docs-title { font-size: 14px; font-weight: 700; color: var(--text); }
.docs-count { font-size: 11px; color: var(--text-3); }
.doc-row {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 0; border-bottom: 1px solid var(--border);
  opacity: 0; transform: translateX(-8px);
  transition: opacity .3s ease, transform .3s ease;
}
.doc-row.visible { opacity: 1; transform: translateX(0); }
.doc-row:last-child { border-bottom: none; }
.doc-icon { width: 30px; height: 30px; border-radius: 7px; display: flex; align-items: center; justify-content: center; font-size: 10px; font-weight: 800; flex-shrink: 0; }
.doc-pdf  { background: rgba(220,38,38,.08);  color: var(--red); }
.doc-word { background: var(--accent-dim);     color: var(--accent); }
.doc-xlsx { background: rgba(5,150,105,.1);    color: var(--green); }
.doc-ppt  { background: rgba(217,119,6,.1);    color: var(--orange); }
.doc-info { flex: 1; min-width: 0; }
.doc-name { font-size: 12.5px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--text); }
.doc-meta { font-size: 10.5px; color: var(--text-3); }
.doc-dl {
  width: 26px; height: 26px; border-radius: 6px;
  background: var(--bg-hover); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; cursor: pointer; transition: background .15s;
}
.doc-dl:hover { background: var(--bg-card-hover); }
.doc-dl svg { width: 12px; height: 12px; color: var(--text-2); }

/* ── Quiz panel ───────────────────────────────────────────────────────── */
.quiz-panel { display: none; flex-direction: column; gap: 0; }
.demo-quiz { display: flex; flex-direction: column; gap: 14px; height: 100%; }
.quiz-question {
  font-size: 14px; font-weight: 700; color: var(--text);
  padding: 10px 14px; background: var(--accent-dim);
  border-radius: 8px; border-left: 3px solid var(--accent);
}
.quiz-options { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.quiz-option {
  padding: 8px 12px; border-radius: 8px; font-size: 12.5px; font-weight: 600;
  background: var(--bg-card); border: 1px solid var(--border-2);
  color: var(--text-2); text-align: center; cursor: pointer;
  transition: all .2s;
}
.quiz-option:hover { border-color: var(--accent); color: var(--accent); }
.quiz-option--correct { border-color: var(--green); background: rgba(5,150,105,.08); color: var(--green); }
.quiz-results { display: flex; flex-direction: column; gap: 6px; flex: 1; }
.quiz-bar {
  display: flex; align-items: center; gap: 10px; font-size: 11px;
}
.quiz-bar-label { width: 48px; text-align: right; font-weight: 600; color: var(--text-3); flex-shrink: 0; }
.quiz-bar-fill {
  height: 22px; border-radius: 4px; display: flex; align-items: center; justify-content: flex-end;
  padding: 0 8px; font-size: 10px; font-weight: 700; color: #fff;
  background: var(--text-3); width: 0; transition: width 0.8s cubic-bezier(.4,0,.2,1);
}
.quiz-bar-fill.quiz-bar--correct { background: var(--green); }
.quiz-bar.animated .quiz-bar-fill { width: var(--pct); }
.quiz-footer { font-size: 11px; color: var(--text-3); text-align: center; margin-top: auto; }

/* ── VERSION BANNER ───────────────────────────────────────────────────── */
.version-banner { padding: 32px 0; }
.version-pill {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 10px 20px 10px 14px;
  background: var(--bg-card); border: 1px solid var(--border-2);
  border-radius: 100px; box-shadow: 0 2px 8px rgba(0,0,0,.07);
  font-size: 13px; color: var(--text-2);
  text-decoration: none; transition: box-shadow .18s, border-color .18s;
  cursor: pointer;
}
.version-pill:hover { border-color: rgba(59,130,246,.35); box-shadow: 0 4px 16px rgba(59,130,246,.12); color: var(--text); }
.version-pill-tag {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 10px; border-radius: 100px;
  background: var(--accent); color: #fff;
  font-size: 11px; font-weight: 800; letter-spacing: .2px;
}
.version-pill-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: rgba(255,255,255,.7);
}
.version-pill-sep { width: 1px; height: 14px; background: var(--border-2); }
.version-pill-arrow { color: var(--text-3); font-size: 14px; transition: transform .18s; }
.version-pill:hover .version-pill-arrow { transform: translateX(3px); }

/* ── POUR QUI ─────────────────────────────────────────────────────────── */
.who { padding: 40px 0 80px; }
.who-block { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; padding: 64px 0; border-top: 1px solid var(--border); }
.who-block:last-child { border-bottom: 1px solid var(--border); }
.who-block.reverse { direction: rtl; }
.who-block.reverse > * { direction: ltr; }
.who-eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.2px; color: var(--accent); margin-bottom: 16px; }
.who-eyebrow-icon { width: 24px; height: 24px; border-radius: 6px; background: var(--accent-dim); display: flex; align-items: center; justify-content: center; color: var(--accent); }
.who-eyebrow-icon svg { width: 13px; height: 13px; }
.who-title { font-size: 28px; font-weight: 800; letter-spacing: -.8px; margin-bottom: 14px; color: var(--text); }
.who-desc { font-size: 15px; color: var(--text-2); line-height: 1.7; margin-bottom: 24px; }
.who-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.who-list li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: var(--text-2); }
.who-list li::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); flex-shrink: 0; margin-top: 8px; }
.who-block.reverse .who-list li::before { background: var(--purple); }
.who-block.reverse .who-eyebrow { color: var(--purple); }
.who-block.reverse .who-eyebrow-icon { background: rgba(124,58,237,.08); color: var(--purple); }
.who-visual { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--r); padding: 24px; min-height: 220px; display: flex; flex-direction: column; gap: 10px; box-shadow: 0 1px 4px rgba(0,0,0,.06); }
.visual-label { font-size: 9.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .9px; color: var(--text-3); margin-bottom: 6px; }
.timeline-item { display: flex; align-items: flex-start; gap: 12px; }
.tl-col { display: flex; flex-direction: column; align-items: center; }
.tl-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; margin-top: 4px; }
.tl-line { width: 1px; flex: 1; background: var(--border); margin: 3px 0; min-height: 20px; }
.tl-title { font-size: 12px; font-weight: 600; color: var(--text); }
.tl-sub { font-size: 11px; color: var(--text-2); }
.dash-row { display: flex; align-items: center; justify-content: space-between; padding: 7px 0; border-bottom: 1px solid var(--border); font-size: 12px; }
.dash-row:last-child { border-bottom: none; }
.dash-name { color: var(--text-2); }
.dash-badge { font-size: 10.5px; font-weight: 700; padding: 2px 9px; border-radius: 4px; }

/* ── FEATURES ─────────────────────────────────────────────────────────── */
.features { padding: 40px 0 80px; }
.section-eyebrow { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.2px; color: var(--accent); margin-bottom: 12px; }
.section-title { font-size: clamp(26px, 3.5vw, 36px); font-weight: 800; letter-spacing: -.8px; margin-bottom: 8px; color: var(--text); }
.section-sub { font-size: 15px; color: var(--text-2); max-width: 440px; line-height: 1.6; }
.section-head { margin-bottom: 40px; }
.feat-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }
.feat-big {
  grid-column: span 3; display: grid; grid-template-columns: 1fr 1fr;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--r); overflow: hidden;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
.feat-big-text { padding: 36px; }
.feat-big-preview { background: var(--demo-sidebar-bg); border-left: 1px solid var(--border); padding: 24px; display: flex; flex-direction: column; gap: 10px; }
.feat-icon { width: 44px; height: 44px; border-radius: 12px; display: flex; align-items: center; justify-content: center; margin-bottom: 18px; }
.feat-icon svg { width: 22px; height: 22px; }
.fi-blue   { background: var(--accent-dim);          color: var(--accent); }
.fi-orange { background: rgba(217,119,6,.1);          color: var(--orange); }
.fi-green  { background: rgba(5,150,105,.1);          color: var(--green); }
.fi-purple { background: rgba(124,58,237,.08);        color: var(--purple); }
.fi-red    { background: rgba(220,38,38,.08);          color: var(--red); }
.feat-big-text h3 { font-size: 20px; font-weight: 700; letter-spacing: -.3px; margin-bottom: 10px; color: var(--text); }
.feat-big-text p { font-size: 14px; color: var(--text-2); line-height: 1.7; }
.feat-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 18px; }
.feat-tag { font-size: 11px; font-weight: 600; padding: 3px 10px; border-radius: 100px; background: var(--bg-hover); color: var(--text-3); border: 1px solid var(--border); }
.feat-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--r);
  padding: 28px 26px; transition: border-color .2s, box-shadow .2s;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
.feat-card:hover { border-color: var(--border-2); box-shadow: 0 4px 16px rgba(0,0,0,.1); }
.feat-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; color: var(--text); }
.feat-card p { font-size: 13px; color: var(--text-2); line-height: 1.65; }

/* ── DOWNLOAD ─────────────────────────────────────────────────────────── */
.download { padding: 40px 0 80px; }
.dl-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; max-width: 820px; margin: 0 auto; }
.dl-card {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--r);
  padding: 32px 24px 28px; text-align: center;
  transition: border-color .2s, box-shadow .2s; position: relative;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
.dl-card:hover { border-color: var(--border-2); box-shadow: 0 4px 16px rgba(0,0,0,.1); }
.dl-card.recommended { border-color: rgba(59,130,246,.4); box-shadow: 0 0 0 3px rgba(59,130,246,.08), 0 1px 4px rgba(0,0,0,.06); }
.dl-card.recommended::before {
  content: 'Recommandé'; position: absolute; top: -1px; left: 50%; transform: translateX(-50%);
  font-size: 10px; font-weight: 700; letter-spacing: .5px; text-transform: uppercase;
  padding: 3px 12px; border-radius: 0 0 8px 8px; background: var(--accent); color: #fff;
}
.dl-icon { width: 56px; height: 56px; border-radius: 14px; display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; }
.dl-icon svg { width: 26px; height: 26px; }
.dli-win { background: var(--accent-dim); color: var(--accent); }
.dli-mac { background: rgba(124,58,237,.08); color: var(--purple); }
.dli-web { background: rgba(5,150,105,.1); color: var(--green); }
.dl-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 4px; color: var(--text); }
.dl-card p { font-size: 12.5px; color: var(--text-3); margin-bottom: 20px; }
.dl-btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 22px; border-radius: var(--r-sm);
  font-family: var(--font); font-size: 13px; font-weight: 700; cursor: pointer; transition: all .15s;
}
.dl-btn-solid { background: var(--accent); color: #fff; border: none; }
.dl-btn-solid:hover { opacity: .88; }
.dl-btn-ghost { background: transparent; color: var(--text-2); border: 1px solid var(--border-2); }
.dl-btn-ghost:hover { color: var(--text); border-color: var(--border-2); background: var(--bg-hover); }

.changelog {
  max-width: 640px; margin: 40px auto 0;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--r);
  padding: 24px 28px; box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
.changelog-head { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.cl-title { font-size: 14px; font-weight: 700; color: var(--text); }
.cl-ver { font-size: 11px; font-weight: 700; padding: 3px 10px; border-radius: 100px; background: var(--accent-dim); color: var(--accent); border: 1px solid rgba(59,130,246,.2); }
.cl-date { font-size: 12px; color: var(--text-3); margin-left: auto; }
.cl-list { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.cl-list li { display: flex; gap: 10px; align-items: flex-start; font-size: 13px; color: var(--text-2); }
.cl-list li::before { content: '\00B7'; color: var(--text-3); flex-shrink: 0; font-weight: 700; }

/* ── FOOTER ───────────────────────────────────────────────────────────── */
.footer { border-top: 1px solid var(--border); padding: 32px 0; background: var(--bg-card); }
.footer .container { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.footer-logo { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 700; color: var(--text-2); }
.footer-logo img { width: 20px; height: 20px; opacity: .6; border-radius: 5px; }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-links a { font-size: 13px; color: var(--text-3); transition: color .15s; }
.footer-links a:hover { color: var(--text-2); }
.footer-copy { font-size: 12px; color: var(--text-3); }

/* ── ANIMATIONS ───────────────────────────────────────────────────────── */
.fade-up { opacity: 0; transform: translateY(24px); transition: opacity .65s cubic-bezier(.4,0,.2,1), transform .65s cubic-bezier(.4,0,.2,1); }
.fade-up.visible { opacity: 1; transform: translateY(0); }
.fade-up:nth-child(2) { transition-delay: .07s; }
.fade-up:nth-child(3) { transition-delay: .14s; }
.fade-up:nth-child(4) { transition-delay: .21s; }

/* ── RESPONSIVE ───────────────────────────────────────────────────────── */
@media (max-width: 1000px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-left { align-items: center; text-align: center; }
  .hero-sub { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }
}
@media (max-width: 900px) {
  .demo-sidebar { display: none; }
  .feat-grid { grid-template-columns: 1fr; }
  .feat-big { grid-column: span 1; grid-template-columns: 1fr; }
  .feat-big-preview { display: none; }
  .dl-grid { grid-template-columns: 1fr; max-width: 340px; margin: 0 auto; }
  .who-block, .who-block.reverse { grid-template-columns: 1fr; direction: ltr; gap: 32px; }
}
@media (max-width: 768px) {
  .hero { padding: 90px 0 50px; }
  .hero h1 { font-size: 36px; letter-spacing: -1.5px; }
  .hero-sub { font-size: 15px; }
  .nav-links { display: none; }
  .container { padding: 0 18px; }
  .section-title { font-size: 24px; }
  .section-sub { font-size: 14px; }
  .footer .container { flex-direction: column; align-items: flex-start; gap: 12px; }
  .footer-links { flex-wrap: wrap; gap: 12px; }
  .footer-links a { padding: 6px 0; min-height: 44px; display: flex; align-items: center; }
  .feat-card { padding: 20px; }
  .who-list li { font-size: 13px; }
  .dl-card { padding: 20px; }
  .demo-window { border-radius: 10px; }
  .demo-tab { font-size: 11px; padding: 8px 10px; gap: 4px; }
  .demo-tab i { display: none; }
  .theme-toggle { min-width: 40px; min-height: 40px; display: flex; align-items: center; justify-content: center; }
  .nav-cta { padding: 7px 14px; font-size: 12px; }
}
@media (max-width: 520px) {
  .hero h1 { font-size: 28px; }
  .hero-sub { font-size: 14px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
  .hero-eyebrow { font-size: 11px; }
  .demo-tabs { gap: 0; }
  .demo-tab { padding: 7px 8px; font-size: 10px; }
  .quiz-question { font-size: 13px; }
  .quiz-option { padding: 8px 10px; font-size: 12px; }
  .quiz-bar-label { font-size: 11px; min-width: 40px; }
  .who-title { font-size: 20px; }
  .feat-card h3 { font-size: 16px; }
  .feat-card p { font-size: 13px; }
  .changelog { padding: 16px; }
}
@media (max-width: 380px) {
  .hero h1 { font-size: 24px; }
  .container { padding: 0 14px; }
  .nav .container { padding: 0 12px; }
  .nav-logo { font-size: 14px; }
  .hero { padding: 80px 0 40px; }
}