:root{
  --blue:#123a5c; --blue-dark:#0e2c46; --gold:#d9a441; --gold-dark:#b98a2e;
  --bg:#f6f9fc; --card:#ffffff; --text:#1a2b3c; --muted:#5c7186; --line:#e3ebf2;
  --green:#2e9e5b; --orange:#e08a1e; --red:#d64545;
  --radius:16px; --shadow:0 4px 20px rgba(18,58,92,.10);
}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh;display:flex;flex-direction:column}
img{max-width:100%}
button{font-family:inherit;cursor:pointer}

/* ---------- Header ---------- */
.app-header{position:sticky;top:0;z-index:50;background:var(--blue);color:#fff;display:flex;align-items:center;gap:12px;padding:12px 16px;box-shadow:0 2px 12px rgba(0,0,0,.18)}
.app-header img{width:40px;height:40px;border-radius:12px;background:#fff}
.app-header .brand{font-weight:800;font-size:1.15em;letter-spacing:.2px;flex:1}
.pill-premium{background:linear-gradient(135deg,var(--gold),var(--gold-dark));color:#3a2a05;font-size:.72em;font-weight:800;padding:4px 12px;border-radius:999px;letter-spacing:.5px}
.pill-free{background:rgba(255,255,255,.16);color:#fff;font-size:.72em;font-weight:700;padding:4px 12px;border-radius:999px}

/* ---------- Views ---------- */
main{flex:1;width:100%;max-width:640px;margin:0 auto;padding:20px 16px 96px}
.view{display:none;animation:fadeIn .25s ease}
.view.active{display:block}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* ---------- Hero (accueil) ---------- */
.hero{background:linear-gradient(150deg,var(--blue-dark) 0%,var(--blue) 60%,#1f6d8c 100%);color:#fff;text-align:center;padding:56px 24px 48px;border-radius:0 0 28px 28px;margin:-20px -16px 24px}
.hero img{width:110px;height:110px;border-radius:26px;background:#fff;box-shadow:0 10px 30px rgba(0,0,0,.3)}
.hero h1{font-size:1.9em;margin:18px 0 8px}
.hero h1 .gold{color:var(--gold)}
.hero p.tag{font-size:1.08em;opacity:.94;max-width:440px;margin:0 auto}
.btn{display:inline-block;border:none;border-radius:999px;font-weight:700;font-size:1.02em;padding:14px 34px;transition:transform .1s,box-shadow .2s;text-decoration:none;text-align:center}
.btn:active{transform:scale(.97)}
.btn-gold{background:linear-gradient(135deg,var(--gold),var(--gold-dark));color:#3a2a05;box-shadow:0 6px 18px rgba(217,164,65,.4)}
.btn-blue{background:var(--blue);color:#fff;box-shadow:0 6px 18px rgba(18,58,92,.3)}
.btn-outline{background:#fff;color:var(--blue);border:2px solid var(--blue)}
.btn-block{width:100%;display:block}
.btn-danger{background:#fff;color:var(--red);border:2px solid var(--red)}
.btn:disabled{opacity:.55;cursor:wait}
.hero .btn{margin-top:26px}
.hero .sub-cta{display:block;margin-top:12px;font-size:.85em;opacity:.75}

/* ---------- Cards ---------- */
.grid-cards{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:6px 0 8px}
@media(min-width:520px){.grid-cards{grid-template-columns:repeat(4,1fr)}}
.card{background:var(--card);border-radius:var(--radius);padding:22px 16px;box-shadow:var(--shadow);text-align:center}
.card .ico{font-size:2em}
.card h3{margin:10px 0 6px;font-size:1em;color:var(--blue)}
.card p{color:var(--muted);font-size:.86em}
.section-title{text-align:center;color:var(--blue);margin:30px 0 16px;font-size:1.35em}
.steps{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:8px}
.step{background:var(--blue);color:#fff;border-radius:12px;padding:12px 18px;font-weight:600;font-size:.95em}
.disclaimer{color:var(--muted);font-size:.82em;text-align:center;margin:26px 0 6px;padding:0 8px}
footer.site-footer{background:var(--blue-dark);color:#b9c8d6;text-align:center;padding:26px 20px;font-size:.88em;margin:30px -16px -96px}
footer.site-footer a{color:var(--gold);text-decoration:none;margin:0 8px}
footer.site-footer .copy{margin-top:10px;opacity:.7}

/* ---------- Forms ---------- */
.field{margin-bottom:14px}
.field label{display:block;font-weight:600;margin-bottom:6px;color:var(--blue);font-size:.95em}
.input,textarea.input{width:100%;border:2px solid var(--line);border-radius:12px;padding:13px 14px;font-size:1em;font-family:inherit;background:#fff;color:var(--text)}
.input:focus{outline:none;border-color:var(--gold)}
textarea.input{min-height:110px;resize:vertical}
.panel{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin-bottom:16px}
.panel h2{color:var(--blue);margin-bottom:6px;font-size:1.25em}
.panel .hint{color:var(--muted);font-size:.9em;margin-bottom:14px}

/* ---------- Scan ---------- */
.photo-zone{border:2px dashed var(--line);border-radius:var(--radius);padding:28px 16px;text-align:center;background:#fbfdfe;margin-bottom:14px}
.photo-zone img#photo-preview{max-height:280px;border-radius:12px;box-shadow:var(--shadow);display:none;margin:0 auto 12px}
.consent-box{display:flex;gap:12px;align-items:flex-start;background:#fffbeF;border:2px solid var(--gold);border-radius:var(--radius);padding:16px;margin-bottom:14px}
.consent-box input{width:22px;height:22px;margin-top:3px;accent-color:var(--gold);flex-shrink:0}
.consent-box p{font-size:.9em}

/* ---------- Résultats ---------- */
.score-row{margin-bottom:12px}
.score-row .lbl{display:flex;justify-content:space-between;font-size:.92em;font-weight:600;color:var(--blue);margin-bottom:5px}
.score-bar{height:12px;background:var(--line);border-radius:999px;overflow:hidden}
.score-fill{height:100%;width:0;border-radius:999px;background:linear-gradient(90deg,var(--gold),var(--gold-dark));transition:width 1s ease}
.skin-age{text-align:center;background:linear-gradient(135deg,var(--blue),#1f6d8c);color:#fff;border-radius:var(--radius);padding:20px;margin:18px 0}
.skin-age .num{font-size:2.2em;font-weight:800;color:var(--gold)}
.routine h4{color:var(--blue);margin:14px 0 8px}
.routine ul{list-style:none}
.routine li{background:#f2f7fb;border-radius:10px;padding:10px 14px;margin-bottom:8px;font-size:.94em}
.routine li::before{content:"☀️ ";margin-right:2px}
.routine.soir li::before{content:"🌙 "}
.reco-list{list-style:none}
.reco-list li{background:#fff8ea;border-left:4px solid var(--gold);border-radius:8px;padding:10px 14px;margin-bottom:8px;font-size:.94em}
.warn{background:#fef2f2;border:1px solid #f5c2c2;color:#8a2a2a;border-radius:12px;padding:12px 16px;font-size:.88em;margin:16px 0}
.feedback-row{display:flex;gap:10px}
.feedback-row .input{flex:1}
.feedback-row .btn{padding:13px 20px;flex-shrink:0}

/* ---------- Verdict produit ---------- */
.verdict{border-radius:var(--radius);padding:20px;text-align:center;font-weight:700;font-size:1.15em;margin:16px 0;color:#fff}
.verdict.compatible{background:linear-gradient(135deg,#2e9e5b,#1f7a44)}
.verdict.prudence{background:linear-gradient(135deg,#e08a1e,#b96f14)}
.verdict.eviter{background:linear-gradient(135deg,#d64545,#a83232)}
.verdict-exp{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px;font-size:.95em}

/* ---------- Chat ---------- */
.chat-box{display:flex;flex-direction:column;gap:10px;margin-bottom:14px;max-height:52vh;overflow-y:auto;padding:4px}
.msg{max-width:85%;padding:12px 16px;border-radius:16px;font-size:.95em;line-height:1.5}
.msg.user{align-self:flex-end;background:var(--blue);color:#fff;border-bottom-right-radius:4px}
.msg.ai{align-self:flex-start;background:#fff;box-shadow:var(--shadow);border-bottom-left-radius:4px}
.msg.typing{opacity:.6;font-style:italic}
.chat-input{display:flex;gap:10px}
.chat-input .input{flex:1}

/* ---------- Suivi ---------- */
.history-item{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;margin-bottom:12px;display:flex;gap:14px;align-items:center}
.history-item .date{font-size:.82em;color:var(--muted)}
.history-item .age{font-weight:800;color:var(--blue);font-size:1.05em}
.mini-bars{flex:1}
.mini-bar{height:6px;background:var(--line);border-radius:999px;margin-bottom:5px;overflow:hidden}
.mini-bar span{display:block;height:100%;background:var(--gold);border-radius:999px}

/* ---------- Profil ---------- */
.profil-row{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid var(--line);font-size:.95em}
.profil-row:last-child{border-bottom:none}
.profil-row .k{color:var(--muted)}
.profil-row .v{font-weight:700}

/* ---------- Bottom nav ---------- */
.bottom-nav{position:fixed;bottom:0;left:0;right:0;z-index:50;background:#fff;border-top:1px solid var(--line);display:flex;box-shadow:0 -4px 16px rgba(18,58,92,.08)}
.bottom-nav button{flex:1;background:none;border:none;padding:10px 4px 12px;font-size:.68em;color:var(--muted);display:flex;flex-direction:column;align-items:center;gap:3px;font-weight:600}
.bottom-nav button .ico{font-size:1.5em}
.bottom-nav button.on{color:var(--blue)}
.bottom-nav button.on .ico{filter:none}
.lock{font-size:.8em}

/* ---------- Modales ---------- */
.modal-back{position:fixed;inset:0;background:rgba(14,44,70,.6);z-index:100;display:none;align-items:center;justify-content:center;padding:20px;backdrop-filter:blur(3px)}
.modal-back.open{display:flex}
.modal{background:#fff;border-radius:20px;padding:28px 24px;max-width:420px;width:100%;max-height:88vh;overflow-y:auto;box-shadow:0 20px 60px rgba(0,0,0,.3);animation:fadeIn .25s ease;position:relative}
.modal h2{color:var(--blue);margin-bottom:4px}
.modal .sub{color:var(--muted);font-size:.9em;margin-bottom:18px}
.modal .close-x{position:absolute;top:14px;right:16px;background:none;border:none;font-size:1.4em;color:var(--muted)}
.tabs{display:flex;background:var(--bg);border-radius:12px;padding:4px;margin-bottom:16px}
.tabs button{flex:1;border:none;background:none;padding:10px;border-radius:9px;font-weight:700;color:var(--muted)}
.tabs button.on{background:#fff;color:var(--blue);box-shadow:var(--shadow)}
.btn-google{width:100%;background:#fff;border:2px solid var(--line);border-radius:12px;padding:13px;font-weight:700;font-size:1em;display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:14px;color:var(--text)}
.divider{text-align:center;color:var(--muted);font-size:.85em;margin:14px 0;position:relative}
.divider::before,.divider::after{content:"";position:absolute;top:50%;width:38%;height:1px;background:var(--line)}
.divider::before{left:0}.divider::after{right:0}
.paywall-list{list-style:none;margin:16px 0}
.paywall-list li{padding:8px 0;font-size:.95em}
.paywall-list li::before{content:"✨ ";}

/* ---------- Divers ---------- */
.spinner{width:44px;height:44px;border:4px solid var(--line);border-top-color:var(--gold);border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 14px}
@keyframes spin{to{transform:rotate(360deg)}}
.loading-overlay{position:fixed;inset:0;background:rgba(255,255,255,.92);z-index:200;display:none;align-items:center;justify-content:center;flex-direction:column;text-align:center;padding:24px}
.loading-overlay.open{display:flex}
.loading-overlay p{color:var(--blue);font-weight:600;max-width:280px}
.toast{position:fixed;bottom:86px;left:50%;transform:translateX(-50%) translateY(20px);background:var(--blue-dark);color:#fff;padding:13px 22px;border-radius:12px;font-size:.92em;z-index:300;opacity:0;pointer-events:none;transition:all .3s;max-width:90%;text-align:center;box-shadow:0 8px 24px rgba(0,0,0,.25)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.empty{text-align:center;color:var(--muted);padding:40px 16px}
.back-link{background:none;border:none;color:var(--blue);font-weight:700;font-size:.95em;margin-bottom:14px;display:inline-flex;align-items:center;gap:6px}
.hidden{display:none!important}