:root{
  --bg:#0f1115; --bg2:#161a21; --card:#1b212b; --line:#27303d;
  --txt:#e8edf4; --muted:#8a96a6; --accent:#36d399; --accent2:#fbbf24;
  --red:#f87171; --blue:#60a5fa; --radius:14px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0;background:var(--bg);color:var(--txt);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:15px;line-height:1.45}
.hidden{display:none!important}
.muted{color:var(--muted)}
h3{margin:0;font-size:15px;font-weight:600}
input,select,textarea{background:var(--bg2);border:1px solid var(--line);color:var(--txt);
  border-radius:10px;padding:10px 12px;font-size:15px;width:100%;font-family:inherit}
input:focus,select,textarea:focus{outline:none;border-color:var(--accent)}
textarea{resize:vertical}

/* LOGIN */
.login{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}
.login-card{background:var(--card);border:1px solid var(--line);border-radius:20px;
  padding:34px 28px;max-width:380px;width:100%;text-align:center}
.brand{font-size:22px;font-weight:700;display:flex;align-items:center;gap:8px;justify-content:center}
.brand.small{font-size:17px}
.dot{width:11px;height:11px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent)}
.tag{color:var(--muted);margin:10px 0 26px}
.btn-google{display:flex;align-items:center;justify-content:center;gap:10px;background:#fff;color:#202124;
  font-weight:600;padding:12px;border-radius:10px;text-decoration:none}
.login-msg{color:var(--red);min-height:18px;margin:14px 0 0;font-size:13px}
.fine{color:var(--muted);font-size:12px;margin-top:18px}

/* APP SHELL */
.app{max-width:560px;margin:0 auto;min-height:100vh;padding-bottom:78px}
.topbar{position:sticky;top:0;z-index:5;background:rgba(15,17,21,.92);backdrop-filter:blur(8px);
  display:flex;justify-content:space-between;align-items:center;padding:12px 16px;border-bottom:1px solid var(--line)}
.who{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.avatar{width:30px;height:30px;border-radius:50%;border:1px solid var(--line)}
.logout{color:var(--muted);text-decoration:none;font-size:18px;padding:2px 6px}
.view{padding:14px 14px 0}

/* CARDS */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:14px}
.card-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px;gap:10px}
.row-2{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}
.stat{text-align:center;padding:18px 12px;margin:0}
.stat-num{font-size:32px;font-weight:700;line-height:1}
.stat-lbl{color:var(--muted);font-size:12px;margin-top:4px;text-transform:uppercase;letter-spacing:.5px}
.stat-sub{font-size:13px;margin-top:6px;color:var(--accent)}
.pill{background:var(--bg2);border:1px solid var(--line);color:var(--muted);font-size:12px;padding:3px 10px;border-radius:20px}

/* BUTTONS */
.btn{background:var(--accent);color:#06281c;border:none;font-weight:600;padding:11px 16px;
  border-radius:10px;font-size:15px;cursor:pointer;width:100%}
.btn:active{transform:translateY(1px)}
.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--txt)}
.btn.tiny{width:auto;padding:6px 12px;font-size:12px;margin:4px 14px 20px}
.btn-row{display:flex;gap:10px;margin-top:10px}
.btn-row .btn{width:auto;flex:1}
.photo-btn{display:flex;align-items:center;justify-content:center;cursor:pointer}

/* MACRO BARS */
.mbar{margin-bottom:12px}
.mbar:last-child{margin-bottom:0}
.mbar-top{display:flex;justify-content:space-between;font-size:13px;margin-bottom:5px}
.mbar-top b{font-weight:600}
.mbar-track{height:9px;background:var(--bg2);border-radius:6px;overflow:hidden}
.mbar-fill{height:100%;border-radius:6px;transition:width .4s}
.mbar.protein .mbar-fill{background:var(--accent)}
.mbar.cal .mbar-fill{background:var(--blue)}
.mbar.fat .mbar-fill{background:var(--accent2)}
.mbar.carb .mbar-fill{background:var(--red)}
.mbar.over .mbar-fill{background:var(--red)}

/* FASTING */
.fast-timer{font-size:30px;font-weight:700;text-align:center;margin:6px 0 12px;font-variant-numeric:tabular-nums}
#fast-card.fasting{border-color:var(--accent)}
.fast-form{margin-top:14px;display:flex;flex-direction:column;gap:10px}
.fast-form input[type=datetime-local]{color-scheme:dark}

.chart-wrap{position:relative;height:240px;width:100%}
.chart-card{background:linear-gradient(180deg,#1b212b 0%,#171c25 100%)}
.chart-stats{display:flex;gap:10px;margin-bottom:14px}
.chart-stats .cs{flex:1;background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:10px 8px;text-align:center}
.chart-stats .cs b{display:block;font-size:19px;font-weight:700;line-height:1.1}
.chart-stats .cs span{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}
.chart-stats .cs.down b{color:var(--accent)}

/* WEIGH IN */
.weigh-in{display:flex;gap:10px;margin-top:12px}
.weigh-in input{flex:1}
.weigh-in .btn{width:auto;padding-left:22px;padding-right:22px}

/* LISTS */
.list{display:flex;flex-direction:column;gap:8px}
.list.compact .item{padding:8px 12px}
.item{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:11px 12px;
  display:flex;justify-content:space-between;align-items:flex-start;gap:10px}
.item .i-main{flex:1;min-width:0}
.item .i-title{font-size:14px;word-break:break-word}
.item .i-sub{font-size:12px;color:var(--muted);margin-top:3px}
.item .del{color:var(--muted);background:none;border:none;font-size:16px;cursor:pointer;padding:0 2px}
.empty{color:var(--muted);font-size:13px;text-align:center;padding:8px}

/* FORMS */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:10px}
.form-grid label{display:flex;flex-direction:column;gap:5px;font-size:12px;color:var(--muted)}
.form-grid label.full,label.full{grid-column:1/-1;display:flex;flex-direction:column;gap:5px;font-size:12px;color:var(--muted);margin-bottom:10px}
.targets{margin-top:14px;display:grid;grid-template-columns:1fr 1fr;gap:10px}
.targets .t{background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px;text-align:center}
.targets .t b{display:block;font-size:22px;font-weight:700}
.targets .t span{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.4px}

/* PREVIEW */
.preview{margin-top:12px;background:var(--bg2);border:1px solid var(--line);border-radius:10px;padding:12px}
.preview h4{margin:0 0 8px;font-size:14px}
.preview .pmac{display:flex;gap:14px;flex-wrap:wrap;font-size:13px;margin-bottom:10px}
.preview .pmac span b{color:var(--accent)}
.preview .pnote{font-size:12px;color:var(--muted);margin-bottom:10px}

/* CHIPS */
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}
.chip{background:var(--bg2);border:1px solid var(--line);color:var(--txt);border-radius:20px;
  padding:7px 13px;font-size:12px;cursor:pointer}
.chip:active{border-color:var(--accent)}

/* CHAT */
#view-coach{display:flex;flex-direction:column;min-height:calc(100vh - 150px)}
.chat{flex:1;display:flex;flex-direction:column;gap:10px;padding-bottom:6px}
.msg{max-width:88%;padding:11px 14px;border-radius:14px;font-size:14px;white-space:pre-wrap;word-break:break-word}
.msg.user{align-self:flex-end;background:var(--accent);color:#06281c;border-bottom-right-radius:4px}
.msg.assistant{align-self:flex-start;background:var(--card);border:1px solid var(--line);border-bottom-left-radius:4px}
.msg.assistant b{color:var(--accent)}
.msg.typing{color:var(--muted)}
.chat-input{display:flex;gap:8px;align-items:flex-end;position:sticky;bottom:78px;
  background:var(--bg);padding:8px 0}
.chat-input textarea{flex:1;max-height:120px}
.chat-input .btn{width:auto;padding:11px 18px}

.insight{font-size:14px;white-space:pre-wrap}
.insight b{color:var(--accent)}

/* TABBAR */
.tabbar{position:fixed;bottom:0;left:0;right:0;max-width:560px;margin:0 auto;display:flex;
  background:var(--bg2);border-top:1px solid var(--line)}
.tab{flex:1;background:none;border:none;color:var(--muted);font-size:20px;padding:8px 0 6px;
  display:flex;flex-direction:column;align-items:center;gap:2px;cursor:pointer}
.tab span{font-size:10px}
.tab.active{color:var(--accent)}

/* TOAST */
.toast{position:fixed;bottom:90px;left:50%;transform:translateX(-50%);background:var(--card);
  border:1px solid var(--line);padding:11px 18px;border-radius:10px;font-size:13px;z-index:50;
  box-shadow:0 8px 24px rgba(0,0,0,.4)}

.spin{display:inline-block;width:14px;height:14px;border:2px solid var(--line);
  border-top-color:var(--accent);border-radius:50%;animation:s .7s linear infinite;vertical-align:-2px}
@keyframes s{to{transform:rotate(360deg)}}