:root{font-family:Inter,ui-sans-serif,system-ui,-apple-system,sans-serif;background:#f4f7fb;color:#17202a;--blue:#4c78ff;--green:#21b573;--orange:#ff7a59;--purple:#a66cff}
*{box-sizing:border-box}body{margin:0;background:linear-gradient(180deg,#edf4ff 0,#f7f9fc 260px)}main{max-width:760px;margin:auto;padding:22px}
header{display:flex;justify-content:space-between;align-items:end;margin:12px 0 22px}h1{font-size:42px;margin:2px 0;letter-spacing:-1.5px}h2{margin:0 0 5px}.eyebrow,small{font-size:11px;letter-spacing:.11em;color:#6c7680}
select,input{font:inherit;border:1px solid #d8dee7;border-radius:10px;padding:11px;background:white;max-width:100%}.card{background:#fff;border:1px solid #e2e8f0;border-radius:20px;padding:19px;margin:15px 0;box-shadow:0 8px 26px #243b5310}
.totals{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;text-align:center}.metric{padding:14px 8px;border-radius:15px}.metric span{display:block;font-size:26px;font-weight:800}.metric small{display:block;margin-top:5px}.calorie{background:#fff0ec}.calorie span{color:var(--orange)}.protein{background:#edf2ff}.protein span{color:var(--blue)}.carbs{background:#eaf9f3}.carbs span{color:var(--green)}.fat{background:#f5edff}.fat span{color:var(--purple)}
.goal{padding:1px 7px 5px;color:#5f6975;font-size:14px}.button{display:block;text-align:center;border:0;border-radius:12px;padding:13px 16px;margin-top:12px;background:#edf1f6;font-weight:750;cursor:pointer}.button input{display:none}.photo-button{border:1px dashed #aebbd0;background:#f7faff;color:#3558b8}.primary{width:100%;background:linear-gradient(135deg,#4169e1,#7656d8);color:white}.primary:disabled{opacity:.4}
#preview{width:100%;max-height:360px;object-fit:cover;border-radius:14px;margin-top:14px}.grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}label{display:block;font-size:13px;color:#5d6672;margin:10px 0}label input,label select{display:block;width:100%;margin-top:5px;color:#17202a}
.entry{display:flex;justify-content:space-between;gap:12px;padding:13px 0;border-top:1px solid #edf0f3}.entry:first-child{border-top:0}.entry b{display:block}.entry small{letter-spacing:0}.delete{border:0;background:none;font-size:18px;color:#8b9197}.fine{font-size:12px;color:#7a838c;text-align:center;padding:8px 20px 30px}
#status,#confidence{font-size:13px;color:#656d75;margin-top:10px}#assumptions{font-size:13px;color:#656d75;padding-left:20px}.section-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.section-head p{margin:0;color:#78818b;font-size:13px}.history-head select{width:auto}.chart-wrap{height:270px;margin-top:14px}.today-chart{height:235px}
.chart-tabs{display:flex;gap:7px;overflow:auto;margin-top:16px}.tab{border:0;background:#f0f3f7;padding:8px 11px;border-radius:999px;font-weight:700;color:#69737e;cursor:pointer}.tab.active{background:#26354a;color:#fff}
@media(max-width:520px){main{padding:15px}.totals{grid-template-columns:1fr 1fr}.metric span{font-size:27px}h1{font-size:38px}.history-head{align-items:flex-start}.chart-wrap{height:245px}}
.goals-card{border-left:4px solid var(--green)}.goal-save{background:#eaf9f3;color:#137d53;border:1px solid #bfead8}.goal-save:hover{background:#dcf5e9}#goalStatus{font-size:13px;color:#137d53;margin-top:9px;min-height:16px}

.usage-card{border-left:4px solid var(--purple)}
.usage-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin-top:15px}
.usage-grid div{background:#f7f5ff;border-radius:13px;padding:12px;text-align:center}
.usage-grid strong{display:block;font-size:19px;color:#6541b5}
.usage-grid small{display:block;margin-top:5px;font-size:9px;color:#777}
.usage-detail,.usage-note{font-size:12px;color:#727b86;margin-top:12px}
.usage-note{margin-bottom:0}
@media(max-width:520px){.usage-grid{grid-template-columns:1fr 1fr}}

.progress-card{border-left:4px solid var(--blue)}.weekly-card{border-left:4px solid var(--orange)}
.weight-entry{align-items:end}.weight-save{background:#edf2ff;color:#3558b8;border:1px solid #ced9ff;margin-bottom:10px}
#weightStatus{font-size:12px;color:#3558b8;min-height:16px}
.weekly-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin-top:15px}
.weekly-grid div{background:#fff7f2;border-radius:13px;padding:12px;text-align:center}
.weekly-grid strong{display:block;font-size:20px;color:#d95f3d}.weekly-grid small{display:block;margin-top:5px;font-size:9px;color:#777}
@media(max-width:520px){.weekly-grid{grid-template-columns:1fr 1fr}}

.favorites-card{border-left:4px solid #f0b429}.favorite-row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 0;border-top:1px solid #edf0f3}.favorite-row:first-child{border-top:0}.favorite-info b,.favorite-info small{display:block}.favorite-info small{margin-top:4px;letter-spacing:0}.favorite-actions{display:flex;align-items:center;gap:6px}.quick-add{border:0;border-radius:10px;padding:9px 12px;background:#fff4d8;color:#8a6412;font-weight:750;cursor:pointer}.delete-favorite{border:0;background:none;color:#9298a0;font-size:20px;cursor:pointer}.favorite-save{background:#fff4d8;color:#8a6412;border:1px solid #f3d58c}#favoriteStatus{font-size:12px;color:#8a6412;margin-top:8px}

.login-main{max-width:430px;padding-top:9vh}.login-card h1{font-size:36px}.login-card p{color:#6c7680}.login-error{background:#fff0ec;color:#a33d25;padding:10px;border-radius:10px;margin:12px 0}.logout-button{border:1px solid #d8dee7;background:white;border-radius:10px;padding:9px 12px;cursor:pointer}