/* ==========================================================================
   HQ — iPadOS-style shell CSS (HIG-tuned, expanded)
   - Tokenized color system
   - Depth/translucency
   - Motion curves
   - Accessibility (reduced motion, focus)
   - Safe-area insets support
   ========================================================================== */

:root{
  /* HIG palette (dark baseline) */
  --bg:#0b0b0d;
  --bg-elev:#0e1118;
  --panel:#101115cc;       /* translucent panels */
  --line:#1e2027;          /* separators */
  --ink:#e6e7eb;           /* primary text */
  --muted:#9aa1ac;         /* secondary text */
  --acc:#2f7cf6;           /* accent / tint */
  --success:#2dd4bf;
  --danger:#ef4444;

  /* Surfaces */
  --icon-bg:#171a22;
  --dock:#12131add;

  /* Blur/Depth */
  --radius:16px;
  --blur:18px;
  --shadow:0 24px 80px rgba(0,0,0,.45);

  /* Motion (HIG-ish) */
  --ease: cubic-bezier(.22,.61,.36,1);
  --fast: 160ms;
  --norm: 260ms;
}

@media (prefers-color-scheme: light){
  :root{
    --bg:#f5f6f8;
    --bg-elev:#ffffff;
    --panel:#ffffffcc;
    --line:#e4e7ef;
    --ink:#0a0c10;
    --muted:#5a6270;
    --icon-bg:#eef1f6;
    --dock:#f8f9fbcc;
    --shadow:0 16px 54px rgba(0,0,0,.15);
  }
}

/* Base */
*{box-sizing:border-box}
html,body{margin:0;height:100%}
html{background:var(--bg)}
body{
  color:var(--ink);
  font:14px/1.5 -apple-system,BlinkMacSystemFont,Inter,Segoe UI,Roboto,Arial,sans-serif;
  background:var(--bg);
  overflow:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

/* Accessibility */
.sr-only{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
:focus-visible{
  outline:2px solid var(--acc);
  outline-offset:3px;
  border-radius:10px;
}

/* Status bar */
#statusbar{
  position:fixed; top:0; left:0; right:0; height:28px;
  display:flex; align-items:center; justify-content:space-between;
  padding: env(safe-area-inset-top) 10px 0 10px;
  background:color-mix(in srgb, var(--bg) 92%, transparent);
  border-bottom:1px solid var(--line);
  backdrop-filter: blur(var(--blur));
  z-index:50;
}
.sb-left,.sb-right{display:flex;gap:8px;align-items:center}
.sb-center{font-weight:600;font-variant-numeric:tabular-nums}
.sb-pill{width:16px;height:10px;border:1px solid var(--muted);border-radius:3px;display:inline-block}
.sb-battery{width:28px;height:12px;border:1px solid var(--muted);border-radius:3px;position:relative}
.sb-battery .level{position:absolute;left:0;top:0;bottom:0;background:linear-gradient(90deg,#7ce38b,#2dd4bf);width:72%}

/* Screens */
.screen{position:absolute;inset:28px 0 0 0;display:none}
.screen.active{display:block}

/* Lock */
#lockscreen{
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  background: radial-gradient(120% 150% at 50% -20%, #171b29, #0a0d14 60%, #07090d 100%);
}
.lock-center{text-align:center;transform:translateY(-6vh)}
.lock-clock{font-size:clamp(56px,10vw,96px);font-weight:700;letter-spacing:0.5px}
.lock-date{color:var(--muted)}
.lock-hint{margin-top:10px;color:var(--muted)}
.lock-actions{position:absolute;bottom:26px;left:0;right:0;display:flex;justify-content:space-between;padding:0 20px}
.lock-btn{
  background:rgba(16,17,21,.66);border:1px solid var(--line);border-radius:999px;width:46px;height:46px;color:var(--ink);
  backdrop-filter:blur(var(--blur)); transition: transform var(--fast) var(--ease), box-shadow var(--fast) var(--ease);
}
.lock-btn:active{transform: scale(.96)}

/* Home / Springboard */
#homescreen{display:flex;flex-direction:column}
.pages{
  position:absolute; inset:28px 0 100px 0; overflow:auto;
  display:grid; grid-auto-flow:column; grid-auto-columns:100%;
  scroll-snap-type:x mandatory; scroll-behavior:smooth;
}
.page{
  width:100%; height:100%;
  display:grid; grid-template-columns:repeat(auto-fill,minmax(90px,1fr));
  gap:18px; align-content:start; justify-items:center; padding:24px;
  scroll-snap-align:center;
}
.icon-wrap{display:flex;flex-direction:column;align-items:center;gap:6px}
.icon{
  position:relative; width:76px; height:76px; border:none; cursor:pointer; border-radius:22%;
  background:var(--icon-bg); display:flex; align-items:center; justify-content:center; font-size:34px; color:var(--ink);
  box-shadow:0 6px 18px rgba(0,0,0,.25);
  transition: transform var(--fast) var(--ease), box-shadow var(--fast) var(--ease);
}
.icon:hover{transform:translateY(-2px); box-shadow:0 8px 24px rgba(0,0,0,.35)}
.icon:active{transform:scale(.97)}
.icon .del{
  position:absolute; top:-8px; right:-8px; width:22px; height:22px;
  border:1px solid var(--line); background:#2a2e36; color:#fff; border-radius:999px; display:none; align-items:center; justify-content:center; font-size:14px
}
.icon-label{margin-top:6px;color:var(--muted);font-size:12px;text-align:center;max-width:88px}
.icon-wrap.jiggle .icon{animation:jiggle .16s linear infinite alternate}
@keyframes jiggle{from{transform:rotate(-2deg)}to{transform:rotate(2deg)}}

.page-dots{position:absolute;left:50%;transform:translateX(-50%);bottom:88px;display:flex;gap:8px}
.page-dots .dot{width:6px;height:6px;border-radius:999px;background:#465;opacity:.4}
.page-dots .dot.active{opacity:1;background:#9ab}

/* Dock */
.dock{
  position:absolute; left:50%; transform:translateX(-50%); bottom:16px; display:flex; gap:12px;
  background:var(--dock); border:1px solid var(--line); border-radius:18px; padding:12px 14px;
  backdrop-filter:blur(var(--blur)); box-shadow:0 14px 46px rgba(0,0,0,.38); align-items:center
}
.dock .icon{width:62px;height:62px;font-size:28px}
.dock-divider{width:1px;height:44px;background:var(--line);opacity:.7;margin:0 2px}

/* Windows */
#applayer{position:absolute;inset:28px 0 0 0;pointer-events:none}
.win{
  position:absolute; inset:28px 12px 12px 12px; background:var(--bg-elev); border:1px solid var(--line); border-radius:16px; box-shadow:var(--shadow);
  transform-origin:50% 100%; opacity:0; transform:scale(.98) translateY(20px); transition:all var(--norm) var(--ease); pointer-events:auto; overflow:hidden
}
.win.active{opacity:1;transform:scale(1) translateY(0)}
.win-header{height:44px;display:flex;align-items:center;justify-content:space-between;padding:0 12px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,#111318,#0c0e13)}
.win-title{font-weight:600}
.win-actions{display:flex;gap:8px}
.win-actions button{
  background:#181b22;border:1px solid var(--line);border-radius:8px;color:var(--ink);padding:6px 10px; transition: background var(--fast) var(--ease)
}
.win-actions button:hover{background:#1c2029}

/* Switcher */
#switcher{position:absolute;inset:28px 0 0 0;display:none;align-items:flex-end;gap:16px;padding:24px;background:linear-gradient(180deg,rgba(0,0,0,.1),rgba(0,0,0,.5))}
#switcher.active{display:flex}
.card{width:240px;height:320px;background:#0f1219;border:1px solid var(--line);border-radius:16px;box-shadow:0 10px 40px rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;color:var(--muted)}

/* Control Center */
#cc{position:absolute;right:16px;top:40px;width:360px;background:var(--panel);border:1px solid var(--line);border-radius:16px;box-shadow:0 12px 44px rgba(0,0,0,.5);display:none;padding:12px;backdrop-filter:blur(var(--blur))}
#cc.active{display:block}
.cc-grabber{width:40px;height:4px;background:#2a2e36;border-radius:999px;margin:0 auto 10px}
.cc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.cc-tile{height:68px;border-radius:999px;background:#141722;border:1px solid var(--line);color:var(--ink);font-weight:600}
.cc-tile[aria-pressed="true"]{outline:3px solid var(--acc);outline-offset:0}
.cc-slider{grid-column:1/-1;background:#141722;border:1px solid var(--line);border-radius:16px;padding:12px}
.cc-slider input{width:100%;height:28px}

/* NC + Today */
#nc{position:absolute;left:50%;transform:translateX(-50%);top:40px;width:min(860px,92vw);background:var(--panel);border:1px solid var(--line);border-radius:16px;display:none;padding:12px;backdrop-filter:blur(var(--blur))}
#nc.active{display:block}
.nc-grabber{width:40px;height:4px;background:#2a2e36;border-radius:999px;margin:0 auto 10px}
.today{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:10px}
.widget{background:#141722;border:1px solid var(--line);border-radius:12px;padding:10px;min-height:110px}
.nc-list{display:flex;flex-direction:column;gap:10px}
.notif{background:#141722;border:1px solid var(--line);border-radius:12px;padding:10px}
.notif .n-title{font-weight:600}
.notif .n-time{color:var(--muted);font-size:12px}

/* Spotlight */
#spotlight{position:absolute;left:50%;transform:translateX(-50%);top:60px;width:min(720px,92vw);display:none;gap:10px;flex-direction:column;backdrop-filter:blur(22px)}
#spotlight.active{display:flex}
#spot-input{width:100%;border-radius:12px;border:1px solid var(--line);background:#0f1219;color:var(--ink);padding:12px 14px;font-size:16px}
#spot-results{background:#0f1219;border:1px solid var(--line);border-radius:12px;max-height:50vh;overflow:auto}
.spot-item{padding:10px 14px;border-bottom:1px solid #1b2029}
.spot-item:last-child{border-bottom:none}

/* Toasts */
#toasts{position:absolute;left:50%;transform:translateX(-50%);bottom:110px;display:flex;flex-direction:column;gap:8px;pointer-events:none}
.toast{background:#11151e;border:1px solid var(--line);border-radius:10px;padding:10px 12px;color:var(--ink);box-shadow:0 10px 30px rgba(0,0,0,.5);transition:opacity var(--fast) var(--ease)}

/* Modals */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.6);display:flex;align-items:center;justify-content:center;z-index:999}
.modal{background:#0e1118;border:1px solid var(--line);border-radius:12px;padding:14px;min-width:300px;max-width:92vw}
.modal-title{font-weight:700;margin-bottom:8px}
.modal-help{color:var(--muted);font-size:13px;margin-bottom:6px}
.modal-input{width:100%;padding:8px;border:1px solid var(--line);border-radius:8px;background:#0f1219;color:#fff;margin:6px 0}
.modal-q{margin:6px 0;color:var(--ink)}
.modal-row{display:flex;gap:8px;align-items:center;justify-content:flex-end;margin-top:6px}
button.accent{background:var(--acc);border:1px solid color-mix(in srgb, var(--acc) 70%, #1e5ccd);color:#fff;border-radius:8px;padding:6px 10px}
button.accent:hover{filter:brightness(1.05)}
button.link{background:none;border:none;color:#8fb2ff;text-decoration:underline;cursor:pointer}
#face-video{display:block;width:360px;max-width:80vw;border-radius:8px;border:1px solid var(--line);background:#000}

/* Safe Area for iOS notch etc */
@supports(padding:max(0px)){
  #statusbar{ padding-top: max(env(safe-area-inset-top), 0px); }
  .dock{ margin-bottom: max(env(safe-area-inset-bottom), 12px); }
}