:root {
    --maple: #b5651d;
    --maple-dark: #8a4a12;
    --leaf: #c1462b;
    --ink: #1c1714;
    --muted: #6b6259;
    --bg: #fdfaf6;
    --card: #ffffff;
    --border: #ece3d8;
    --radius: 14px;
    --shadow: 0 8px 30px rgba(60, 40, 20, 0.08);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: "Segoe UI", system-ui, -apple-system, Arial, sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.6;
}

h1, h2, h3 { line-height: 1.2; }
a { color: var(--maple-dark); }
.muted { color: var(--muted); }
.hidden { display: none !important; }

/* ---------- Page publique ---------- */
.hero {
    background: radial-gradient(120% 120% at 20% 0%, #fff6ec 0%, #f6e7d4 55%, #efd8bf 100%);
    border-bottom: 1px solid var(--border);
    padding-bottom: 64px;
}
.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1080px;
    margin: 0 auto;
    padding: 20px 24px;
}
.logo { font-weight: 700; color: var(--maple-dark); }
.nav-admin {
    text-decoration: none;
    font-size: 14px;
    padding: 8px 16px;
    border: 1px solid var(--maple);
    border-radius: 999px;
    color: var(--maple-dark);
}
.nav-admin:hover { background: var(--maple); color: #fff; }
.hero-content { max-width: 820px; margin: 40px auto 0; padding: 0 24px; text-align: center; }
.hero-content h1 { font-size: clamp(28px, 5vw, 48px); color: var(--maple-dark); margin: 0 0 20px; }
.lead { font-size: 19px; color: #5a4d40; max-width: 640px; margin: 0 auto 28px; }
.hero-actions { margin-top: 8px; }
.btn {
    display: inline-block;
    background: var(--maple);
    color: #fff;
    text-decoration: none;
    padding: 13px 28px;
    border-radius: 999px;
    font-weight: 600;
    box-shadow: var(--shadow);
}
.btn:hover { background: var(--maple-dark); }

main { max-width: 1080px; margin: 0 auto; padding: 24px; }
.section { padding: 48px 0; }
.section h2 { color: var(--maple-dark); font-size: 28px; }
.section > p { max-width: 760px; font-size: 17px; }
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}
.feature {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
}
.feature h3 { color: var(--maple-dark); margin-top: 0; }
.feature p { color: var(--muted); margin-bottom: 0; }

.footer {
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--muted);
    font-size: 14px;
    padding: 28px 24px;
}

/* ---------- Administration ---------- */
.admin-body { background: #f3ede4; }
.auth-card {
    max-width: 380px;
    margin: 8vh auto;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 36px 32px;
}
.auth-card h1 { margin: 0 0 4px; color: var(--maple-dark); font-size: 24px; }
.auth-form { display: flex; flex-direction: column; gap: 10px; margin-top: 20px; }
.auth-form label { font-size: 14px; font-weight: 600; }
.auth-form input {
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    font-size: 16px;
}
.auth-form input:focus { outline: 2px solid var(--maple); border-color: var(--maple); }
.auth-form button {
    background: var(--maple);
    color: #fff;
    border: 0;
    padding: 12px;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
}
.auth-form button:hover { background: var(--maple-dark); }
.link {
    background: none !important;
    color: var(--muted) !important;
    border: 0 !important;
    cursor: pointer;
    font-size: 14px !important;
    padding: 4px !important;
    text-decoration: underline;
}
.msg { margin-top: 16px; font-size: 14px; min-height: 20px; text-align: center; }
.msg.ok { color: #2f7d4f; }
.msg.err { color: var(--leaf); }

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--card);
    border-bottom: 1px solid var(--border);
    padding: 14px 24px;
}
.admin-user { display: flex; align-items: center; gap: 14px; font-size: 14px; color: var(--muted); }
.admin-main { max-width: 1000px; margin: 0 auto; padding: 32px 24px; }
.admin-main h1 { color: var(--maple-dark); }
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 18px;
    margin-top: 24px;
}
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow);
}
.card h3 { margin-top: 0; color: var(--maple-dark); }
.badge {
    display: inline-block;
    font-size: 12px;
    background: #f6e7d4;
    color: var(--maple-dark);
    padding: 3px 10px;
    border-radius: 999px;
}
.badge-ok { background: #d8f0e0; color: #1f7a46; }
.badge-no { background: #f3e0dc; color: #b4452f; }

/* ---------- Navigation admin ---------- */
.admin-brand { font-size: 15px; }
.admin-nav { display: flex; gap: 6px; flex-wrap: wrap; }
.admin-nav a {
    text-decoration: none;
    color: var(--muted);
    font-size: 14px;
    padding: 7px 14px;
    border-radius: 999px;
}
.admin-nav a:hover { background: #f3ede4; color: var(--maple-dark); }
.admin-nav a.active { background: var(--maple); color: #fff; }

/* ---------- Panneaux / stats ---------- */
.panel {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    margin-top: 24px;
}
.panel-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.panel-head h2 { margin: 0; }
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat-label { font-size: 13px; color: var(--muted); }
.stat-value { font-size: 34px; font-weight: 700; color: var(--maple-dark); line-height: 1; }
.stat-value small { font-size: 15px; color: var(--muted); font-weight: 500; }

.btn-sm, .btn-primary {
    display: inline-block; background: var(--maple); color: #fff; border: 0;
    text-decoration: none; border-radius: 999px; cursor: pointer; font-weight: 600;
}
.btn-sm { padding: 7px 16px; font-size: 14px; }
.btn-primary { padding: 12px 24px; font-size: 15px; margin-top: 18px; }
.btn-sm:hover, .btn-primary:hover { background: var(--maple-dark); }
.btn-primary:disabled { opacity: .5; cursor: default; }

/* ---------- Tableaux ---------- */
.data-table { width: 100%; border-collapse: collapse; margin-top: 14px; font-size: 14px; }
.data-table th, .data-table td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--border); }
.data-table th { color: var(--muted); font-weight: 600; }
.data-table tr:last-child td { border-bottom: 0; }

/* ---------- Formulaires admin ---------- */
.field-label { display: block; font-weight: 600; font-size: 14px; margin: 18px 0 8px; }
#measure-form input[type="text"], #corpus-form input[type="text"],
#corpus-form select, #measure-form input[type="text"] {
    width: 100%; padding: 11px 14px; border: 1px solid var(--border); border-radius: 10px; font-size: 15px;
}
select { padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px; font-size: 14px; background: #fff; }
.checkgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }
.checkgroup { border: 1px solid var(--border); border-radius: 10px; padding: 10px 14px; }
.checkgroup legend { font-weight: 600; color: var(--maple-dark); padding: 0 6px; font-size: 13px; }
.checkgroup label, label.inline { display: block; font-size: 13px; padding: 3px 0; cursor: pointer; }
label.inline { display: inline-flex; align-items: center; gap: 6px; margin-right: 16px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }

/* ---------- Progression ---------- */
.progress-box { margin-top: 20px; }
.progress-bar { background: #efe3d4; border-radius: 999px; height: 12px; overflow: hidden; }
.progress-fill { background: var(--maple); height: 100%; width: 0; transition: width .3s ease; }

/* ---------- Extraits & contenus ---------- */
.snippets { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 14px; margin-top: 12px; }
.snippet { border: 1px solid var(--border); border-radius: 10px; padding: 14px; background: #fffdfa; }
.snippet-head { display: flex; justify-content: space-between; gap: 8px; font-size: 12px; color: var(--muted); margin-bottom: 8px; }
.snippet p { margin: 0; font-size: 13px; }
.content-block { white-space: normal; background: #fffdfa; border: 1px solid var(--border); border-radius: 10px; padding: 18px; margin-top: 10px; line-height: 1.7; }
.rules { line-height: 1.8; }

/* ---------- Calculateur public ---------- */
.hero-compact { padding-bottom: 40px; }
.calc { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: start; }
.calc-input input { width: 100%; padding: 14px; border: 1px solid var(--border); border-radius: 10px; font-size: 18px; }
.calc-input label { display: block; font-weight: 600; margin-bottom: 8px; }
.calc-output { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); }
.result-row { display: flex; justify-content: space-between; padding: 8px 0; font-size: 15px; }
.result-row strong { color: var(--maple-dark); }
.result-delta { border-top: 2px solid var(--border); margin-top: 6px; padding-top: 12px; font-size: 16px; }
.btn-outline { background: transparent; color: var(--maple-dark); border: 1px solid var(--maple); margin-left: 10px; }
.btn-outline:hover { background: var(--maple); color: #fff; }
@media (max-width: 720px) { .grid-2, .calc { grid-template-columns: 1fr; } }