/* ============================================================
   MyFitAI — Design Tokens
   Signature: the "macro ring" — a rotating dial motif used
   across dashboard, scanner and coach to visualize energy/macros.
   ============================================================ */

:root{
  /* ---- Color: dark mode (default) ---- */
  --bg-0:#0A1512;          /* deep pine-black base */
  --bg-1:#101F1A;          /* panel base */
  --bg-2:#16281F;          /* elevated panel */
  --glass:rgba(255,255,255,0.055);
  --glass-border:rgba(255,255,255,0.09);
  --glass-hi:rgba(255,255,255,0.12);

  --text-0:#EDF5F1;
  --text-1:#AFC4BA;
  --text-2:#7C9186;

  --lime:#C8FF4D;          /* kinetic accent — energy / primary CTA */
  --lime-dim:#8FBF2E;
  --coral:#FF6B4A;         /* heat accent — calories / alerts */
  --teal:#3FD6C0;          /* secondary accent — protein / water */
  --violet:#B79CFF;        /* tertiary accent — recovery / sleep */

  --danger:#FF5C5C;
  --success:#5CFFA1;

  --radius-s:10px;
  --radius-m:16px;
  --radius-l:24px;
  --radius-xl:32px;

  --shadow-soft:0 8px 30px rgba(0,0,0,0.35);
  --shadow-lift:0 16px 50px rgba(0,0,0,0.45);

  --ease:cubic-bezier(.16,1,.3,1);
  --dur-fast:150ms;
  --dur-med:320ms;
  --dur-slow:600ms;

  --font-display:'Sora', 'Segoe UI', sans-serif;
  --font-body:'Inter', 'Segoe UI', sans-serif;
  --font-data:'IBM Plex Mono', monospace;
}

[data-theme="light"]{
  --bg-0:#F5FAF7;
  --bg-1:#FFFFFF;
  --bg-2:#EEF5F0;
  --glass:rgba(16,31,26,0.045);
  --glass-border:rgba(16,31,26,0.09);
  --glass-hi:rgba(16,31,26,0.14);

  --text-0:#0E1A15;
  --text-1:#3E5049;
  --text-2:#6C7D75;

  --lime-dim:#79A62A;
  --shadow-soft:0 8px 30px rgba(20,40,30,0.08);
  --shadow-lift:0 16px 50px rgba(20,40,30,0.12);
}

*{box-sizing:border-box;margin:0;padding:0;}
html{color-scheme:dark;}
[data-theme="light"] html{color-scheme:light;}

body{
  background:var(--bg-0);
  color:var(--text-0);
  font-family:var(--font-body);
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
  transition:background var(--dur-med) var(--ease), color var(--dur-med) var(--ease);
}

h1,h2,h3,h4,.font-display{font-family:var(--font-display);letter-spacing:-0.02em;}
.font-data,.stat-value,.metric{font-family:var(--font-data);font-variant-numeric:tabular-nums;}

a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}

::selection{background:var(--lime);color:#0A1512;}

/* Reduced motion respected */
@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.001ms !important;animation-iteration-count:1 !important;transition-duration:0.001ms !important;}
}

:focus-visible{
  outline:2px solid var(--lime);
  outline-offset:3px;
  border-radius:4px;
}

/* ---- Glass surface ---- */
.glass{
  background:var(--glass);
  border:1px solid var(--glass-border);
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  border-radius:var(--radius-l);
  box-shadow:var(--shadow-soft);
}

.container{
  max-width:1180px;
  margin:0 auto;
  padding:0 24px;
}

/* ---- Buttons ---- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:999px;border:none;
  font-weight:600;font-size:15px;
  transition:transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.btn-primary{background:var(--lime);color:#0A1512;}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(200,255,77,0.25);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;border:1px solid var(--glass-border);color:var(--text-0);}
.btn-ghost:hover{background:var(--glass);}
.btn-block{width:100%;}
.btn:disabled{opacity:0.5;cursor:not-allowed;transform:none !important;}

/* ---- Inputs ---- */
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:18px;text-align:left;}
.field label{font-size:13px;color:var(--text-1);font-weight:500;}
.field input,.field select,.field textarea{
  background:var(--bg-1);
  border:1px solid var(--glass-border);
  color:var(--text-0);
  padding:13px 15px;border-radius:var(--radius-s);
  font-size:15px;font-family:var(--font-body);
  transition:border-color var(--dur-fast) var(--ease);
}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:var(--lime);outline:none;
}
.field .error-msg{color:var(--danger);font-size:12.5px;min-height:16px;}
.field.has-error input{border-color:var(--danger);}

/* ---- Toast / errors ---- */
.toast{
  position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(12px);
  background:var(--bg-2);border:1px solid var(--glass-border);
  padding:14px 20px;border-radius:var(--radius-m);
  box-shadow:var(--shadow-lift);
  opacity:0;pointer-events:none;
  transition:all var(--dur-med) var(--ease);
  z-index:999;max-width:90vw;font-size:14px;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);pointer-events:auto;}
.toast.error{border-color:var(--danger);}
.toast.success{border-color:var(--success);}

/* ---- Macro ring (signature element) ---- */
.macro-ring{position:relative;display:inline-flex;align-items:center;justify-content:center;}
.macro-ring svg{transform:rotate(-90deg);}
.macro-ring circle{fill:none;stroke-linecap:round;}
.macro-ring .track{stroke:var(--glass-border);}
.macro-ring .fill{stroke:var(--lime);transition:stroke-dashoffset var(--dur-slow) var(--ease);}
.macro-ring .center{position:absolute;text-align:center;}
.macro-ring .center .value{font-family:var(--font-data);font-size:22px;font-weight:600;}
.macro-ring .center .label{font-size:11px;color:var(--text-2);text-transform:uppercase;letter-spacing:0.06em;}

/* ---- Skip link ---- */
.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--lime);color:#0A1512;
  padding:10px 16px;border-radius:8px;z-index:1000;
}
.skip-link:focus{left:16px;top:16px;}