:root{
  --font:'Plus Jakarta Sans',system-ui,sans-serif;
  --bg:#060B08; --panel:#0A120D; --card:#101813; --card2:#17221B; --line:#1F2C24; --line2:#2C3D33;
  --text:#F2FBF5; --muted:#86A090; --dim:#5F7468;
  --accent:#A3E635; --ink:#0B1A10; --soft:#1B2E14; --green:#34D399; --blue:#7DD3FC; --amber:#FBBF24; --red:#FF7A6B; --pink:#FF7AB6; --violet:#8F7BF5;
  --m-c:#A3E635; --m-p:#34D399; --m-g:#2DD4BF;
  --hero:linear-gradient(135deg,#065F46 0%,#059669 55%,#65A30D 100%); --card-shadow:none; --glow:0 0 24px rgba(163,230,53,.45);
  --safe-b:env(safe-area-inset-bottom,0px);
  --outer:#030604; --topbar:rgba(6,11,8,.9); --tabbar:rgba(16,24,19,.95); --shade:6,11,8;
  --chip-ink:#C5F07A; --chip-blue:#B9C3E6; --ai:#D7B8FF;
  --tint-violet:#1B2E14; --tint-violet-line:#2C4A1F; --tint-green:#12301F; --tint-green-line:#24503A; --tint-green-bg:#0F2318;
  --tint-blue-line:#1F3A3A; --tint-blue-bg:#0F1F1E; --tint-blue-card:#12261F; --tint-hero:#12301F;
  color-scheme:dark;
}
/* tema claro (botón ☀/☾ arriba a la derecha) */
:root[data-theme="light"]{
  --bg:#FBFCFB; --panel:#FFFFFF; --card:#FFFFFF; --card2:#F2F6F3; --line:#E5ECE7; --line2:#D3DDD6;
  --text:#0B1A10; --muted:#5C6E62; --dim:#8A9A90;
  --accent:#0EA35A; --ink:#FFFFFF; --soft:#D9F5E4; --green:#0E9F6E; --blue:#2563EB; --amber:#B45309; --red:#C8372A; --pink:#C43C82; --violet:#6A55D4;
  --m-c:#65A30D; --m-p:#0E9F6E; --m-g:#0F766E;
  --hero:linear-gradient(135deg,#047857 0%,#10B981 60%,#84CC16 100%);
  --card-shadow:0 1px 2px rgba(11,26,16,.05),0 8px 24px rgba(11,26,16,.07); --glow:0 6px 16px rgba(14,163,90,.35);
  --outer:#EEF2EF; --topbar:rgba(251,252,251,.92); --tabbar:rgba(255,255,255,.96); --shade:255,255,255;
  --chip-ink:#08824A; --chip-blue:#3348A8; --ai:#7046C2;
  --tint-violet:#E9F7EF; --tint-violet-line:#C9EBD6; --tint-green:#D9F5E4; --tint-green-line:#BDE8CF; --tint-green-bg:#EEFAF3;
  --tint-blue-line:#C7E7E2; --tint-blue-bg:#EEF8F6; --tint-blue-card:#E3F4EE; --tint-hero:#D9F5E4;
  --err-ink:#B3261E; --err-line:#F0B8B3;
  color-scheme:light;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;min-height:100%}
body{background:var(--outer);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.4}
a{color:inherit}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,p{margin:0}
.cond{font-family:var(--font);font-weight:800;letter-spacing:-.02em}
.app{position:relative;max-width:440px;min-height:100vh;margin:0 auto;background:var(--bg);display:flex;flex-direction:column}
@media (min-width:480px){.app{border-left:1px solid var(--line);border-right:1px solid var(--line)}}

/* barra superior */
.top{position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;padding:calc(10px + env(safe-area-inset-top,0px)) 16px 10px;background:var(--topbar);backdrop-filter:blur(10px)}
.brand{display:flex;align-items:center;gap:6px;color:var(--accent);text-decoration:none}
.brand span{font-family:var(--font);font-weight:800;font-size:20px;letter-spacing:-.03em;color:var(--text)}
.avatar-btn{position:relative;width:40px;height:40px;border-radius:50%;background:var(--card);border:1px solid var(--line);box-shadow:var(--card-shadow);display:flex;align-items:center;justify-content:center;font-weight:700;text-decoration:none;color:var(--text)}
.avatar-btn.ghost{background:var(--card)}
.badge{position:absolute;top:-3px;right:-3px;min-width:18px;height:18px;padding:0 5px;border-radius:9px;background:var(--accent);color:var(--ink);font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center}

.view{flex:1;padding:6px 16px calc(110px + var(--safe-b));display:flex;flex-direction:column;gap:16px}

/* barra inferior */
.tabbar{position:fixed;bottom:calc(10px + var(--safe-b));left:50%;transform:translateX(-50%);width:min(408px,calc(100% - 24px));z-index:6;display:grid;grid-template-columns:repeat(5,1fr);align-items:center;background:var(--tabbar);backdrop-filter:blur(12px);border:1px solid var(--line);border-radius:28px;padding:6px;box-shadow:var(--card-shadow),0 4px 20px rgba(0,0,0,.08)}
.tabbar a{display:flex;flex-direction:column;align-items:center;gap:2px;text-decoration:none;color:var(--muted);font-size:11px;font-weight:600;min-height:48px;justify-content:center;border-radius:999px}
.tabbar a svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.tabbar a.active{color:var(--accent);background:var(--soft)}
.tabbar a.now{background:none}
.now-ring{width:58px;height:58px;margin-top:-26px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--accent);color:var(--ink);font-family:var(--font);font-weight:800;font-size:14px;letter-spacing:.02em;box-shadow:var(--glow)}
.tabbar a.now.active .now-ring{box-shadow:var(--glow),0 0 0 4px var(--soft)}

/* piezas */
.card{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:16px;box-shadow:var(--card-shadow)}
.card h3,.label{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.h1{font-family:var(--font);font-size:30px;font-weight:800;letter-spacing:-.03em;line-height:1.1}
.h2{font-family:var(--font);font-size:22px;font-weight:800;letter-spacing:-.025em;line-height:1.15}
.muted{color:var(--muted)} .dim{color:var(--dim)} .small{font-size:14px} .xs{font-size:12px}
.row{display:flex;align-items:center;gap:10px}
.between{justify-content:space-between}
.wrap{flex-wrap:wrap}
.col{display:flex;flex-direction:column;gap:10px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.btn{min-height:48px;padding:0 20px;border-radius:999px;border:1px solid var(--line);background:var(--card);box-shadow:var(--card-shadow);color:var(--text);font-weight:700;display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;text-decoration:none}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--ink)}
.btn.ghost{background:none;box-shadow:none}
.btn.sm{min-height:36px;padding:0 14px;border-radius:999px;font-size:14px}
.btn.block{width:100%}
.btn:disabled{opacity:.45}
.icon-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:var(--card);box-shadow:var(--card-shadow);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;flex:none}
.icon-btn svg,.ic{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;flex:none}
.chip{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;background:var(--soft);color:var(--chip-ink);font-size:13px;font-weight:600}
.chip.amber{color:var(--amber);background:var(--card2)} .chip.blue{color:var(--chip-blue);background:var(--card2)} .chip.grey{color:var(--muted);background:var(--card2)}
.bar{height:7px;border-radius:9px;background:var(--card2);overflow:hidden}
.bar>span{display:block;height:100%;border-radius:6px;background:var(--accent)}
.note{background:var(--card2);border:1px solid var(--line);border-radius:14px;padding:12px 14px;font-size:14px;color:var(--muted);display:flex;gap:10px}
.empty{padding:30px 10px;text-align:center;color:var(--muted)}
.list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.back{align-self:flex-start;display:inline-flex;align-items:center;gap:4px;min-height:40px;text-decoration:none;font-weight:600;color:var(--text);background:none;border:none;padding:0;cursor:pointer}

/* hoy */
.ring-card{display:flex;gap:16px;align-items:center}
.ring{position:relative;width:140px;height:140px;flex:none}
.ring svg{width:140px;height:140px;transform:rotate(-90deg)}
.ring .center{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.ring .big{font-family:var(--font);font-size:30px;font-weight:800;letter-spacing:-.03em;line-height:1}
/* tarjeta de calorías con degradado verde */
.ring-card{background:var(--hero);border-color:transparent;color:#fff;--ring-track:rgba(255,255,255,.22);--ring-fill:#fff;--ring-train:#D9F99D}
.ring-card .muted{color:rgba(255,255,255,.82)}
.next{position:relative;overflow:hidden;border-radius:24px;border:1px solid var(--line);box-shadow:var(--card-shadow);min-height:170px;display:flex;flex-direction:column;justify-content:flex-end;padding:16px;text-decoration:none}
.next .art{position:absolute;inset:0;display:flex;align-items:center;justify-content:flex-start;padding-left:18px;opacity:.9}
.next .shade{position:absolute;inset:0;background:linear-gradient(90deg,rgba(var(--shade),.15),rgba(var(--shade),.85) 55%)}
.next .body{position:relative;margin-left:38%;display:flex;flex-direction:column;gap:6px;text-align:right}
.next .acts{position:absolute;top:12px;right:12px;display:flex;gap:6px;z-index:2}
.meal{display:flex;gap:12px;align-items:center;padding:12px;border-radius:20px;background:var(--card);border:1px solid var(--line);text-decoration:none;box-shadow:var(--card-shadow)}
.meal.done{opacity:.6}
.meal .thumb{width:52px;height:52px;border-radius:14px;flex:none;display:flex;align-items:center;justify-content:center;font-family:var(--font);font-weight:800;font-size:10.5px;text-transform:uppercase;text-align:center;line-height:1.1;padding:4px}
.check{width:34px;height:34px;border-radius:50%;border:2px solid var(--line2);background:none;display:flex;align-items:center;justify-content:center;cursor:pointer;flex:none;color:var(--ink)}
.check.on{background:var(--accent);border-color:var(--accent)}
.link-ai{display:flex;align-items:center;justify-content:center;gap:6px;min-height:44px;color:var(--ai);font-weight:600;background:none;border:none;cursor:pointer;font-size:15px}

/* días */
.days{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}
.day{min-height:58px;border-radius:16px;border:1px solid var(--line);background:var(--card);box-shadow:var(--card-shadow);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;cursor:pointer}
.day b{font-family:var(--font);font-weight:800;font-size:18px;line-height:1}
.day span{font-size:12px;font-weight:600}
.day[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:var(--ink)}
.day.today:not([aria-pressed="true"]){border-color:var(--accent)}

/* receta */
.hero{height:200px;border-radius:24px;display:flex;align-items:flex-end;padding:16px;position:relative;border:1px solid var(--line)}
.ing{display:flex;justify-content:space-between;gap:10px;padding:12px 14px;background:var(--card);border:1px solid var(--line);border-radius:14px}
.steps{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.steps li{display:flex;gap:12px;padding-bottom:16px;position:relative}
.steps li::before{content:"";position:absolute;left:14px;top:30px;bottom:0;width:2px;background:var(--accent);opacity:.4}
.steps li:last-child::before{display:none}
.steps .n{flex:none;width:30px;height:30px;border-radius:50%;border:2px solid var(--accent);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;background:var(--bg);position:relative}
.switch{position:relative;display:inline-block;width:46px;height:26px;flex:none}
.switch input{position:absolute;opacity:0;width:100%;height:100%;margin:0;cursor:pointer;z-index:1}
.switch span{position:absolute;inset:0;border-radius:999px;background:var(--line2);transition:.15s;pointer-events:none}
.switch span::after{content:"";position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:50%;background:var(--text);transition:.15s}
.switch input:checked+span{background:var(--accent)}
.switch input:checked+span::after{left:23px}
.legend{display:flex;flex-direction:column;gap:8px}
.legend .row{justify-content:space-between}
.dot{width:10px;height:10px;border-radius:50%;display:inline-block;flex:none}

/* hoja inferior */
.sheet-wrap{position:fixed;inset:0;z-index:20;background:rgba(0,0,0,.55);display:flex;align-items:flex-end;justify-content:center}
.sheet-wrap[hidden]{display:none}
.sheet{width:min(440px,100%);max-height:88vh;overflow-y:auto;background:var(--panel);border-radius:26px 26px 0 0;border:1px solid var(--line);border-bottom:none;padding:10px 18px calc(24px + var(--safe-b));display:flex;flex-direction:column;gap:14px}
.sheet .grab{width:44px;height:5px;border-radius:3px;background:var(--line2);align-self:center;margin-bottom:4px}
.opt{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px;border-radius:18px;background:var(--card);border:1px solid var(--line);cursor:pointer;text-align:left;width:100%}
.opt[aria-pressed="true"]{border-color:var(--accent)}
.radio{width:22px;height:22px;border-radius:50%;border:2px solid var(--line2);flex:none}
.opt[aria-pressed="true"] .radio{border:7px solid var(--accent)}

/* formularios */
.field{display:flex;flex-direction:column;gap:6px}
.field>span{font-size:13px;color:var(--muted);font-weight:600}
.input{display:flex;align-items:center;gap:8px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:0 14px;min-height:50px}
.input:focus-within{border-color:var(--accent)}
.input input,.input select,.input textarea{flex:1;min-width:0;background:none;border:none;outline:none;min-height:48px}
.input select option{background:var(--card)}
.input textarea{padding:12px 0;resize:vertical;min-height:80px}
.input .unit{color:var(--dim);font-size:14px;font-weight:600}
.setrow{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}
.setrow:last-child{border-bottom:none}

/* valoración */
.checkin{position:fixed;inset:0;z-index:30;display:flex;justify-content:center;background:#070a08}
.checkin .inner{width:min(440px,100%);display:flex;flex-direction:column;padding:calc(14px + env(safe-area-inset-top,0px)) 18px calc(24px + var(--safe-b));gap:16px;transition:background .3s}
.scale{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}
.scale button{min-height:64px;border-radius:16px;border:2px solid rgba(255,255,255,.25);background:rgba(0,0,0,.18);font-family:var(--font);font-size:26px;font-weight:800;cursor:pointer;color:#fff}
.scale button[aria-pressed="true"]{background:#fff;color:#111;border-color:#fff}
.progress-dots{display:grid;grid-template-columns:repeat(8,1fr);gap:4px}
.progress-dots span{height:4px;border-radius:4px;background:rgba(255,255,255,.3)}
.progress-dots span.on{background:#fff}

/* chat */
.msgs{display:flex;flex-direction:column;gap:10px}
.msg{max-width:82%;display:flex;flex-direction:column;gap:3px}
.msg .bub{padding:10px 14px;border-radius:18px}
.msg.patient{align-self:flex-end}
.msg.patient .bub{background:var(--accent);color:var(--ink);border-radius:18px 18px 4px 18px}
.msg.nutri .bub{background:var(--card);border:1px solid var(--line);border-radius:18px 18px 18px 4px}
.msg .meta{font-size:12px;color:var(--dim)}
.msg.patient .meta{text-align:right}
.composer{position:fixed;bottom:calc(84px + var(--safe-b));left:50%;transform:translateX(-50%);width:min(408px,calc(100% - 24px));display:flex;gap:8px;z-index:6}
.composer input{flex:1;min-height:48px;border-radius:999px;border:1px solid var(--line);background:var(--card);padding:0 16px;outline:none}
.composer input:focus{border-color:var(--accent)}

.toast{position:fixed;left:50%;bottom:calc(100px + var(--safe-b));transform:translateX(-50%) translateY(10px);background:var(--text);color:var(--ink);padding:10px 18px;border-radius:999px;font-weight:700;opacity:0;pointer-events:none;transition:.2s;z-index:40;white-space:nowrap}
.toast.show{opacity:1;transform:translateX(-50%)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* cabecera: botón de tema junto al chat; el logo sigue centrado */
.top{position:sticky}
.top .brand{position:absolute;left:50%;transform:translateX(-50%)}
.top-actions{display:flex;gap:8px}
.avatar-btn svg{fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}