/* ==========================================================================
   LifeHub — shared stylesheet
   Material Design 3 tokens + layout shell + component library.
   Every module page (index.html, notes.html, tasks.html, ...) loads this
   single file, so visual changes here apply everywhere at once.
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root{
  color-scheme: light;

  /* Roboto renders natively on Android/ChromeOS with zero network calls;
     the rest of the stack keeps desktop/iOS looking correct offline. */
  --font: Roboto, -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, Arial, sans-serif;

  /* Color roles — light */
  --primary:            #4B3FA6;
  --on-primary:         #FFFFFF;
  --primary-container:  #E4DFFF;
  --on-primary-container:#180864;

  --secondary:          #93690A;
  --on-secondary:       #FFFFFF;
  --secondary-container:#F6E4B6;
  --on-secondary-container:#2E2000;

  --tertiary:           #3E6B4C;
  --on-tertiary:        #FFFFFF;
  --tertiary-container: #C7EFD1;
  --on-tertiary-container:#00210C;

  --error:              #B3261E;
  --on-error:           #FFFFFF;
  --error-container:    #F9DEDC;
  --on-error-container: #410E0B;

  --background:         #FBF8FF;
  --on-background:      #1C1B1F;

  --surface:            #FFFFFF;
  --surface-variant:    #E7E0EC;
  --on-surface:         #1C1B1F;
  --on-surface-variant: #49454F;
  --outline:            #79747E;
  --outline-variant:    #CAC4D0;

  --surface-1: #F6F2FC; /* container-low */
  --surface-2: #F0EBFA; /* container */
  --surface-3: #EAE3F8; /* container-high */

  --scrim: rgba(20,18,24,.45);
  --shadow-color: 220 20% 30%;

  /* Shape */
  --r-sm: 10px;
  --r-md: 16px;
  --r-lg: 26px;
  --r-full: 999px;

  /* Spacing */
  --sp-1: 4px; --sp-2: 8px; --sp-3: 12px; --sp-4: 16px;
  --sp-5: 20px; --sp-6: 24px; --sp-7: 32px; --sp-8: 40px;

  /* Type scale */
  --disp:   600 30px/38px var(--font);
  --headl:  500 24px/31px var(--font);
  --title-l:500 20px/26px var(--font);
  --title:  500 16px/22px var(--font);
  --body-l: 400 16px/24px var(--font);
  --body:   400 14px/20px var(--font);
  --label:  500 12px/16px var(--font);

  --nav-h: 64px;
  --top-h: 60px;
}

html[data-theme="dark"]{
  color-scheme: dark;
  --primary:            #C9BFFF;
  --on-primary:         #2F2382;
  --primary-container:  #423699;
  --on-primary-container:#E4DFFF;

  --secondary:          #EBC873;
  --on-secondary:       #3D2E00;
  --secondary-container:#5A4300;
  --on-secondary-container:#F6E4B6;

  --tertiary:           #A4D3AF;
  --on-tertiary:        #0B3A1D;
  --tertiary-container: #245234;
  --on-tertiary-container:#C7EFD1;

  --error:              #F2B8B5;
  --on-error:           #601410;
  --error-container:    #8C1D18;
  --on-error-container:  #F9DEDC;

  --background:         #131218;
  --on-background:      #E6E1E9;

  --surface:            #1C1B22;
  --surface-variant:    #49454F;
  --on-surface:         #E6E1E9;
  --on-surface-variant: #CAC4D0;
  --outline:            #948F99;
  --outline-variant:    #49454F;

  --surface-1: #1E1C26;
  --surface-2: #26232E;
  --surface-3: #2F2C38;

  --scrim: rgba(0,0,0,.6);
}

@media (prefers-color-scheme: dark){
  html:not([data-theme="light"]):not([data-theme="dark"]){
    color-scheme: dark;
    --primary:#C9BFFF;--on-primary:#2F2382;--primary-container:#423699;--on-primary-container:#E4DFFF;
    --secondary:#EBC873;--on-secondary:#3D2E00;--secondary-container:#5A4300;--on-secondary-container:#F6E4B6;
    --tertiary:#A4D3AF;--on-tertiary:#0B3A1D;--tertiary-container:#245234;--on-tertiary-container:#C7EFD1;
    --error:#F2B8B5;--on-error:#601410;--error-container:#8C1D18;--on-error-container:#F9DEDC;
    --background:#131218;--on-background:#E6E1E9;--surface:#1C1B22;--surface-variant:#49454F;
    --on-surface:#E6E1E9;--on-surface-variant:#CAC4D0;--outline:#948F99;--outline-variant:#49454F;
    --surface-1:#1E1C26;--surface-2:#26232E;--surface-3:#2F2C38;--scrim:rgba(0,0,0,.6);
  }
}

/* ---------- Reset ---------- */
*,*::before,*::after{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0; font:var(--body); background:var(--background); color:var(--on-background);
  -webkit-font-smoothing:antialiased; overscroll-behavior-y:none;
}
h1,h2,h3,p,ul,figure{ margin:0; }
ul{ list-style:none; padding:0; }
button{ font:inherit; color:inherit; }
a{ color:var(--primary); }
input,textarea,select,button{ font-family:var(--font); }
::selection{ background:var(--primary-container); color:var(--on-primary-container); }

/* Respect reduced motion everywhere */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{ animation-duration:.001ms !important; transition-duration:.001ms !important; }
}

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

/* ---------- App shell / layout ---------- */
.app-shell{ min-height:100%; display:flex; flex-direction:column; }

.topbar{
  position:sticky; top:0; z-index:20; height:var(--top-h);
  display:flex; align-items:center; gap:var(--sp-2);
  padding:0 var(--sp-2) 0 var(--sp-1);
  background:color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--outline-variant);
}
.topbar h1{ font:var(--title-l); flex:1; min-width:0; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.icon-btn{
  width:44px; height:44px; border-radius:var(--r-full); border:none; background:transparent;
  display:inline-flex; align-items:center; justify-content:center; cursor:pointer; flex-shrink:0;
  color:var(--on-surface-variant);
}
.icon-btn:hover{ background:var(--surface-2); }
.icon-btn.on{ color:var(--primary); background:var(--primary-container); }
.icon-btn svg{ width:22px; height:22px; }

main{ flex:1; width:100%; max-width:960px; margin:0 auto; padding:var(--sp-4) var(--sp-4) 100px; }

/* Bottom nav — phones */
.bottom-nav{
  position:fixed; left:0; right:0; bottom:0; z-index:30; height:var(--nav-h);
  display:flex; background:var(--surface-2); border-top:1px solid var(--outline-variant);
  padding-bottom:env(safe-area-inset-bottom);
}
.bottom-nav a{
  flex:1; display:flex; flex-direction:column; align-items:center; justify-content:center; gap:2px;
  text-decoration:none; color:var(--on-surface-variant); font:var(--label); padding-top:6px;
}
.bottom-nav a svg{ width:24px; height:24px; }
.bottom-nav a .pill{ padding:2px 18px; border-radius:var(--r-full); }
.bottom-nav a[aria-current="page"]{ color:var(--on-surface); }
.bottom-nav a[aria-current="page"] .pill{ background:var(--primary-container); color:var(--on-primary-container); }

/* Nav rail — tablets/desktop */
.nav-rail{ display:none; }
@media (min-width:900px){
  .app-shell{ flex-direction:row; }
  .nav-rail{
    display:flex; flex-direction:column; width:232px; flex-shrink:0; height:100vh; position:sticky; top:0;
    background:var(--surface-1); border-right:1px solid var(--outline-variant); padding:var(--sp-4) var(--sp-3);
    overflow-y:auto;
  }
  .nav-rail .brand{ display:flex; align-items:center; gap:var(--sp-2); padding:var(--sp-2) var(--sp-2) var(--sp-5); }
  .nav-rail .brand img{ width:32px; height:32px; }
  .nav-rail .brand span{ font:var(--title-l); }
  .nav-rail a{
    display:flex; align-items:center; gap:var(--sp-3); padding:10px var(--sp-3); border-radius:var(--r-full);
    text-decoration:none; color:var(--on-surface-variant); font:var(--title); margin-bottom:2px;
  }
  .nav-rail a svg{ width:22px; height:22px; flex-shrink:0; }
  .nav-rail a:hover{ background:var(--surface-2); }
  .nav-rail a[aria-current="page"]{ background:var(--secondary-container); color:var(--on-secondary-container); }
  .bottom-nav{ display:none; }
  main{ padding:var(--sp-6) var(--sp-7) var(--sp-7); max-width:1040px; }
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  height:40px; padding:0 20px; border-radius:var(--r-full); border:none; cursor:pointer;
  font:var(--title); transition:box-shadow .15s ease, background .15s ease;
}
.btn-filled{ background:var(--primary); color:var(--on-primary); }
.btn-filled:hover{ box-shadow:0 2px 8px hsl(var(--shadow-color)/.35); }
.btn-tonal{ background:var(--secondary-container); color:var(--on-secondary-container); }
.btn-outlined{ background:transparent; color:var(--primary); border:1px solid var(--outline); }
.btn-text{ background:transparent; color:var(--primary); padding:0 12px; }
.btn-danger{ background:var(--error-container); color:var(--on-error-container); }
.btn:disabled{ opacity:.45; cursor:not-allowed; }
.btn svg{ width:18px; height:18px; }

.fab{
  position:fixed; right:20px; bottom:calc(var(--nav-h) + 20px); z-index:25;
  width:56px; height:56px; border-radius:var(--r-lg); border:none; cursor:pointer;
  background:var(--primary-container); color:var(--on-primary-container);
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 3px 10px hsl(var(--shadow-color)/.4);
}
.fab svg{ width:26px; height:26px; }
@media (min-width:900px){ .fab{ bottom:32px; right:40px; } }

/* ---------- Cards / surfaces ---------- */
.card{ background:var(--surface-1); border-radius:var(--r-md); padding:var(--sp-4); }
.card + .card{ margin-top:var(--sp-3); }
.section-title{ font:var(--title); color:var(--on-surface-variant); margin:var(--sp-6) 0 var(--sp-2); }
.section-title:first-child{ margin-top:0; }

.grid{ display:grid; gap:var(--sp-3); grid-template-columns:1fr; }
@media (min-width:640px){ .grid.cols-2{ grid-template-columns:1fr 1fr; } }
@media (min-width:900px){ .grid.cols-3{ grid-template-columns:1fr 1fr 1fr; } }

/* ---------- List items ---------- */
.list-item{
  display:flex; align-items:center; gap:var(--sp-3); padding:12px var(--sp-3); border-radius:var(--r-md);
  background:var(--surface-1); cursor:pointer; border:1px solid transparent;
}
.list-item:hover{ border-color:var(--outline-variant); }
.list-item + .list-item{ margin-top:8px; }
.list-item .leading{
  width:40px; height:40px; border-radius:var(--r-full); background:var(--surface-3);
  display:flex; align-items:center; justify-content:center; flex-shrink:0; color:var(--primary);
}
.list-item .leading svg{ width:20px; height:20px; }
.list-item .body{ flex:1; min-width:0; }
.list-item .body .t{ font:var(--title); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.list-item .body .s{ font:var(--body); color:var(--on-surface-variant); overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.list-item .trailing{ flex-shrink:0; display:flex; align-items:center; gap:4px; }
.list-item.done .body .t{ text-decoration:line-through; color:var(--on-surface-variant); }

/* ---------- Forms ---------- */
.field{ margin-bottom:var(--sp-4); }
.field label{ display:block; font:var(--label); color:var(--on-surface-variant); margin-bottom:6px; }
.field input[type=text],.field input[type=number],.field input[type=date],
.field input[type=time],.field input[type=datetime-local],.field input[type=password],
.field input[type=email],.field input[type=url],.field textarea,.field select{
  width:100%; border:1px solid var(--outline); background:var(--surface); color:var(--on-surface);
  border-radius:var(--r-sm); padding:11px 14px; font:var(--body-l);
}
.field textarea{ resize:vertical; min-height:90px; }
.field input:focus,.field textarea:focus,.field select:focus{ outline:2px solid var(--primary); outline-offset:-1px; }
.row-2{ display:grid; grid-template-columns:1fr 1fr; gap:var(--sp-3); }
.hint{ font:var(--body); color:var(--on-surface-variant); margin-top:4px; }

.switch{ position:relative; width:46px; height:26px; flex-shrink:0; }
.switch input{ opacity:0; width:100%; height:100%; position:absolute; margin:0; cursor:pointer; z-index:1; }
.switch .track{ position:absolute; inset:0; background:var(--surface-3); border:1px solid var(--outline); border-radius:var(--r-full); transition:.15s; }
.switch .thumb{ position:absolute; top:3px; left:3px; width:18px; height:18px; border-radius:50%; background:var(--outline); transition:.15s; }
.switch input:checked + .track{ background:var(--primary); border-color:var(--primary); }
.switch input:checked ~ .thumb{ transform:translateX(20px); background:var(--on-primary); }

.chip{
  display:inline-flex; align-items:center; gap:6px; height:32px; padding:0 14px; border-radius:var(--r-full);
  background:var(--surface-2); border:1px solid var(--outline-variant); font:var(--label); cursor:pointer;
  color:var(--on-surface-variant);
}
.chip.active{ background:var(--secondary-container); color:var(--on-secondary-container); border-color:transparent; }
.chip-row{ display:flex; gap:8px; flex-wrap:wrap; margin-bottom:var(--sp-4); }

/* ---------- Dialog / modal ---------- */
.scrim{ position:fixed; inset:0; background:var(--scrim); z-index:40; display:flex; align-items:flex-end; justify-content:center; }
@media (min-width:640px){ .scrim{ align-items:center; } }
.dialog{
  background:var(--surface); border-radius:var(--r-lg) var(--r-lg) 0 0; width:100%; max-width:560px;
  max-height:88vh; overflow-y:auto; padding:var(--sp-6); animation:slideUp .18s ease;
}
@media (min-width:640px){ .dialog{ border-radius:var(--r-lg); max-height:80vh; } }
@keyframes slideUp{ from{ transform:translateY(24px); opacity:0; } to{ transform:none; opacity:1; } }
.dialog h2{ font:var(--headl); margin-bottom:var(--sp-4); }
.dialog .actions{ display:flex; justify-content:flex-end; gap:8px; margin-top:var(--sp-5); }

/* ---------- Empty state ---------- */
.empty{ text-align:center; padding:56px var(--sp-4); color:var(--on-surface-variant); }
.empty svg{ width:56px; height:56px; margin-bottom:var(--sp-3); opacity:.6; }
.empty h3{ font:var(--title-l); color:var(--on-surface); margin-bottom:6px; }
.empty p{ font:var(--body); max-width:38ch; margin:0 auto; }

/* ---------- Toast ---------- */
#toast-host{ position:fixed; left:0; right:0; bottom:calc(var(--nav-h) + 16px); z-index:60; display:flex; flex-direction:column; align-items:center; gap:8px; pointer-events:none; }
@media (min-width:900px){ #toast-host{ bottom:24px; } }
.toast{
  background:#332F3B; color:#F4EFF4; padding:12px 20px; border-radius:var(--r-sm); font:var(--body-l);
  box-shadow:0 3px 10px rgba(0,0,0,.3); max-width:90vw; animation:toastIn .15s ease;
}
html[data-theme="dark"] .toast{ background:#E6E1E9; color:#1C1B1F; }
@keyframes toastIn{ from{ transform:translateY(8px); opacity:0; } to{ transform:none; opacity:1; } }

/* ---------- Misc ---------- */
.hero{
  border-radius:var(--r-lg); padding:var(--sp-6); color:#fff; margin-bottom:var(--sp-5);
  background:var(--hero-grad, linear-gradient(135deg,#4B3FA6,#7A5FD1));
  position:relative; overflow:hidden;
}
.hero h1{ font:var(--disp); }
.hero p{ font:var(--body-l); opacity:.9; margin-top:4px; }

.ring{ transform:rotate(-90deg); }
.ring circle{ fill:none; stroke-width:8; }
.ring .bg{ stroke:rgba(255,255,255,.25); }
.ring .fg{ stroke:#fff; stroke-linecap:round; transition:stroke-dashoffset .4s ease; }
html[data-theme=dark] .hero .ring .bg, .hero .ring .bg{ stroke:rgba(255,255,255,.25); }

.stat{ text-align:center; }
.stat b{ display:block; font:var(--headl); }
.stat span{ font:var(--body); color:var(--on-surface-variant); }

.flame{ color:#E08A2C; }
.locked-banner{
  display:flex; align-items:center; gap:var(--sp-3); background:var(--surface-1); border-radius:var(--r-md);
  padding:var(--sp-5); flex-direction:column; text-align:center; margin-top:15vh;
}

table.plain{ width:100%; border-collapse:collapse; }
table.plain th,table.plain td{ text-align:left; padding:8px 10px; border-bottom:1px solid var(--outline-variant); font:var(--body); }
table.plain th{ color:var(--on-surface-variant); font-weight:500; }

.skip-link{ position:absolute; left:-9999px; top:0; background:var(--primary); color:var(--on-primary); padding:10px 16px; z-index:100; }
.skip-link:focus{ left:8px; top:8px; }

.progress-bar{ height:8px; border-radius:var(--r-full); background:var(--surface-3); overflow:hidden; }
.progress-bar > i{ display:block; height:100%; background:var(--primary); border-radius:var(--r-full); }

.two-col{ display:grid; gap:var(--sp-4); grid-template-columns:1fr; }
@media (min-width:900px){ .two-col{ grid-template-columns:1.3fr .8fr; align-items:start; } }