/* ─── inflation.css — Thème : Feu, urgence économique, rouge-orange ─────────── */
@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@300;400;500;600;700&family=Lora:ital,opsz,wght@0,10..72,300;0,10..72,400;0,10..72,500;1,10..72,300;1,10..72,400&family=Roboto+Mono:wght@400;500&display=swap');

:root {
  --chalk:#fffef9; --chalk-2:#faf8f0; --chalk-3:#f2ede0;
  --ink:#1a0800; --ink-mid:#5a2800; --ink-light:#a05028;
  --fire:#c23d0a; --fire-2:#ea4a0a; --fire-glow:rgba(234,74,10,.18);
  --fire-pale:#fff7f0; --fire-mid:#fedccc;
  --ember:#d97706; --ember-pale:#fefce8;
  --cool:#1d4ed8; --cool-pale:#eff6ff;
  --green:#166534; --green-pale:#f0fdf4;
  --slate:#374151; --slate-pale:#f9fafb;
  --border:#e8d0b8; --border-light:#f0e4d4;
  --font-display:'Oswald',sans-serif;
  --font-body:'Lora',Georgia,serif;
  --font-mono:'Roboto Mono',monospace;
  --sidebar-w:265px; --radius:4px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}

body{font-family:var(--font-body);background:var(--chalk);color:var(--ink);font-size:17px;line-height:1.8;}

.progress-bar{position:fixed;top:0;left:0;height:5px;width:0%;background:linear-gradient(90deg,var(--fire),var(--fire-2),var(--ember));z-index:200;transition:width .08s linear;box-shadow:0 2px 8px var(--fire-glow);}

.page-layout{display:flex;min-height:100vh;}

.sidebar{width:var(--sidebar-w);flex-shrink:0;background:var(--ink);position:sticky;top:0;height:100vh;overflow-y:auto;display:flex;flex-direction:column;scrollbar-width:thin;scrollbar-color:rgba(255,255,255,.1) transparent;}
.sidebar-header{padding:28px 22px 22px;border-bottom:3px solid var(--fire);position:relative;}
.sidebar-site-link{font-family:var(--font-mono);font-size:.6rem;letter-spacing:.15em;color:rgba(255,255,255,.25);text-decoration:none;display:block;margin-bottom:12px;}
.sidebar-title{font-family:var(--font-display);font-size:1.6rem;font-weight:700;color:var(--fire-2);letter-spacing:.05em;text-transform:uppercase;line-height:1.1;}
.toc-nav{padding:12px 0 16px;flex:1;}
.toc-section-label{font-family:var(--font-mono);font-size:.58rem;letter-spacing:.2em;text-transform:uppercase;color:rgba(255,255,255,.22);padding:10px 22px 4px;}
.toc-link{display:block;padding:5px 22px 5px 26px;font-family:var(--font-display);font-size:.85rem;font-weight:300;letter-spacing:.04em;color:rgba(255,255,255,.5);text-decoration:none;border-left:2px solid transparent;transition:all .15s;text-transform:uppercase;}
.toc-link:hover,.toc-link.active{color:var(--fire-2);border-left-color:var(--fire-2);background:rgba(234,74,10,.1);}
.toc-link.active{color:var(--fire-mid);}
.sidebar-subject-nav{padding:14px 22px;border-top:1px solid rgba(255,255,255,.07);}
.sidebar-subject-nav p{font-family:var(--font-mono);font-size:.58rem;letter-spacing:.18em;text-transform:uppercase;color:rgba(255,255,255,.2);margin-bottom:8px;}
.sidebar-subject-nav a{display:block;font-family:var(--font-display);font-size:.8rem;font-weight:300;color:rgba(255,255,255,.36);text-decoration:none;padding:3px 0;transition:color .15s;text-transform:uppercase;letter-spacing:.04em;}
.sidebar-subject-nav a:hover{color:var(--fire-2);}
.sidebar-subject-nav a.current{color:var(--fire-2);font-weight:500;}

.main{flex:1;min-width:0;padding:0 58px 100px;max-width:840px;}

.page-header{padding:56px 0 38px;margin-bottom:50px;border-bottom:4px solid var(--fire);position:relative;}
.page-header::after{content:'';position:absolute;bottom:-4px;left:0;width:120px;height:4px;background:var(--ember);}
.subject-tag{font-family:var(--font-display);font-size:.72rem;letter-spacing:.3em;text-transform:uppercase;color:var(--fire);margin-bottom:12px;font-weight:500;}
h1.page-title{font-family:var(--font-display);font-size:4rem;font-weight:700;color:var(--ink);line-height:.95;letter-spacing:.02em;text-transform:uppercase;}
h1.page-title span{color:var(--fire-2);}
.page-intro{margin-top:16px;font-size:1rem;color:var(--ink-mid);font-style:italic;max-width:540px;font-family:var(--font-body);}

/* Gauge de prix simulée */
.price-gauge{display:flex;align-items:center;gap:10px;margin-top:18px;font-family:var(--font-mono);font-size:.8rem;color:var(--ink-mid);}
.gauge-bar{flex:1;height:8px;background:var(--border-light);border-radius:4px;overflow:hidden;max-width:200px;}
.gauge-fill{height:100%;background:linear-gradient(90deg,#22c55e,var(--ember),var(--fire-2));border-radius:4px;width:72%;transition:width 1s ease;}
.gauge-label{color:var(--fire);font-weight:500;}

.section{margin-bottom:62px;scroll-margin-top:28px;}
h2.section-title{font-family:var(--font-display);font-size:1.7rem;font-weight:600;color:var(--ink);margin-bottom:20px;padding-bottom:10px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px;text-transform:uppercase;letter-spacing:.04em;}
h2.section-title .num{font-family:var(--font-mono);font-size:.68rem;color:var(--chalk);background:var(--fire);padding:3px 9px;border-radius:2px;font-weight:400;}
h3.sub-title{font-family:var(--font-display);font-size:1.1rem;font-weight:600;color:var(--fire);margin:28px 0 12px;text-transform:uppercase;letter-spacing:.05em;}
p{margin-bottom:.9em;}ul,ol{padding-left:1.4em;margin-bottom:.9em;}li{margin-bottom:.28em;}

.box{padding:16px 20px 14px;margin:18px 0;border-radius:var(--radius);}
.box-label{font-family:var(--font-display);font-size:.65rem;font-weight:600;letter-spacing:.15em;text-transform:uppercase;display:block;margin-bottom:8px;}
.box.def{background:var(--fire-pale);border:1px solid var(--fire-mid);border-top:4px solid var(--fire);}
.box.def .box-label{color:var(--fire);}
.box.theorem{background:var(--ember-pale);border:1px solid #fde68a;border-top:4px solid var(--ember);}
.box.theorem .box-label{color:var(--ember);}
.box.prop{background:var(--cool-pale);border:1px solid #bfdbfe;border-top:4px solid var(--cool);}
.box.prop .box-label{color:var(--cool);}
.box.corollary{background:var(--green-pale);border:1px solid #bbf7d0;border-top:4px solid var(--green);}
.box.corollary .box-label{color:var(--green);}
.box.example{background:var(--chalk-2);border:1px solid var(--border);}
.box.example .box-label{color:var(--ink-light);}
.box.remark{background:var(--slate-pale);border:1px dashed var(--border);}
.box.remark .box-label{color:var(--slate);}

.proof-toggle{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-display);font-size:.75rem;font-weight:500;letter-spacing:.08em;text-transform:uppercase;color:var(--fire);border:1px solid var(--fire);padding:5px 14px;border-radius:var(--radius);cursor:pointer;background:transparent;margin-top:8px;transition:all .15s;user-select:none;}
.proof-toggle:hover{background:var(--fire);color:var(--chalk);}
.proof-toggle .arrow{transition:transform .2s;}
.proof-toggle.open .arrow{transform:rotate(90deg);}
.proof-content{max-height:0;overflow:hidden;transition:max-height .3s ease;}
.proof-content.open{max-height:900px;}
.proof-inner{margin-top:12px;padding:14px 18px;background:var(--chalk-2);border:1px solid var(--border);border-radius:var(--radius);color:var(--ink-mid);font-size:.94rem;font-style:italic;}
.qed{float:right;color:var(--fire);font-family:var(--font-mono);font-size:.82rem;font-style:normal;}

.formula-block{text-align:center;padding:20px 16px;margin:16px 0;background:var(--chalk-2);border:1px solid var(--border);border-left:4px solid var(--fire);border-radius:0 var(--radius) var(--radius) 0;overflow-x:auto;}

.math-table{width:100%;border-collapse:collapse;margin:16px 0;font-size:.91rem;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;}
.math-table th{background:var(--ink);color:var(--chalk-3);padding:10px 14px;text-align:left;font-family:var(--font-display);font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:.08em;}
.math-table td{padding:9px 14px;border-bottom:1px solid var(--border-light);vertical-align:top;}
.math-table tr:nth-child(even) td{background:var(--chalk-2);}
.math-table td:first-child{font-family:var(--font-display);font-weight:500;color:var(--fire);}
.math-table .hot{color:var(--fire-2);font-weight:600;}
.math-table .cold{color:var(--cool);font-weight:600;}
code{font-family:var(--font-mono);font-size:.82em;background:var(--fire-pale);color:var(--fire);padding:2px 6px;border-radius:3px;border:1px solid var(--fire-mid);}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:14px 0;}
.two-col .box{margin:0;}

.mobile-header{display:none;position:sticky;top:0;z-index:50;background:var(--ink);border-bottom:3px solid var(--fire);padding:12px 18px;align-items:center;justify-content:space-between;}
.mobile-menu-btn{background:none;border:none;color:var(--fire-2);font-size:1.3rem;cursor:pointer;}
.mobile-title{font-family:var(--font-display);font-size:1.1rem;font-weight:700;color:var(--fire-2);text-transform:uppercase;letter-spacing:.05em;}
.mobile-drawer{display:none;position:fixed;inset:0;z-index:100;}
.mobile-drawer.open{display:flex;}
.drawer-overlay{position:absolute;inset:0;background:rgba(0,0,0,.6);}
.drawer-panel{position:relative;z-index:1;width:265px;background:var(--ink);height:100%;overflow-y:auto;padding:16px 0;border-right:3px solid var(--fire);}
@media(max-width:960px){.sidebar{display:none;}.mobile-header{display:flex;}.main{padding:0 20px 70px;}h1.page-title{font-size:2.8rem;}.two-col{grid-template-columns:1fr;}}