/* shell.css — kerangka UI Kilat: top bar, bottom nav, modal login, halaman umum
   Dipakai oleh index.html, search.html, inbox.html, profile.html */
:root{
  --ink:#f4f4f6; --dim:#9d9daa; --bg:#07070a; --card:#12131a; --line:rgba(255,255,255,.14);
  --acc:#ff2e55; --acc2:#22d3ee; --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",sans-serif;
  --nav-h:54px;
}
*{box-sizing:border-box}
html,body{height:100%}
body.shell{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);-webkit-font-smoothing:antialiased}

/* ---------- TOP TAB BAR ---------- */
.topbar{
  position:fixed;top:0;left:0;right:0;z-index:30;height:calc(46px + env(safe-area-inset-top));
  padding-top:env(safe-area-inset-top);
  display:flex;align-items:center;justify-content:center;gap:18px;
  background:linear-gradient(to bottom,rgba(0,0,0,.65),rgba(0,0,0,0));
  pointer-events:none;
}
.topbar .tabs{display:flex;gap:20px;align-items:center;pointer-events:auto}
.tab{
  background:none;border:0;color:var(--dim);font:600 15px/1 var(--font);padding:8px 2px;cursor:pointer;position:relative;
}
.tab.on{color:var(--ink)}
.tab.on::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:0;
  width:26px;height:2px;border-radius:2px;background:var(--ink);
}
.icon-btn{
  position:absolute;right:14px;top:calc(env(safe-area-inset-top) + 6px);
  width:34px;height:34px;border-radius:999px;border:1px solid var(--line);
  background:rgba(0,0,0,.35);backdrop-filter:blur(8px);color:var(--ink);
  display:grid;place-items:center;cursor:pointer;pointer-events:auto;
}
.icon-btn svg{width:17px;height:17px}

/* ---------- BOTTOM NAV ---------- */
.bottomnav{
  position:fixed;left:0;right:0;bottom:0;z-index:30;
  height:calc(var(--nav-h) + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  display:grid;grid-template-columns:repeat(4,1fr);align-items:center;
  background:linear-gradient(to top,rgba(0,0,0,.82) 55%,rgba(0,0,0,0));
}
.bottomnav a,.bottomnav button{
  background:none;border:0;color:var(--dim);text-decoration:none;cursor:pointer;
  display:grid;justify-items:center;gap:2px;font:500 10px/1 var(--font);padding:0;
}
.bottomnav .on{color:var(--ink)}
.bottomnav svg{width:23px;height:23px}
.bottomnav .plus{
  width:44px;height:29px;border-radius:9px;display:grid;place-items:center;
  background:linear-gradient(90deg,#25f4ee 0 18%,var(--acc) 18% 82%,#25f4ee 82% 100%);color:#fff;
}
.bottomnav .plus svg{width:18px;height:18px}
.avatar-mini{
  width:23px;height:23px;border-radius:999px;background:#2a2c38;display:grid;place-items:center;
  font:600 11px/1 var(--font);color:var(--ink);overflow:hidden;
}
.avatar-mini img{width:100%;height:100%;object-fit:cover}

/* ---------- HALAMAN UMUM ---------- */
.page{padding:calc(66px + env(safe-area-inset-top)) 16px calc(var(--nav-h) + 26px + env(safe-area-inset-bottom));max-width:640px;margin:0 auto}
.page h1{font:700 20px/1.2 var(--font);margin:0 0 4px}
.page .sub{color:var(--dim);font-size:13px;margin-bottom:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px;margin-bottom:12px}
.field{display:grid;gap:6px;margin-bottom:10px}
.field label{font-size:12px;color:var(--dim)}
input,select,textarea{
  width:100%;padding:11px 12px;border-radius:10px;border:1px solid var(--line);
  background:#0d0e13;color:var(--ink);font:400 15px var(--font);
}
button.btn{
  padding:11px 16px;border-radius:10px;border:1px solid var(--line);background:#1b1d26;
  color:var(--ink);font:600 14px var(--font);cursor:pointer;
}
button.btn.p{background:var(--acc);border-color:var(--acc);color:#fff}
button.btn.g{background:#10231b;border-color:#1f4a37;color:#b7f5d8}
button.btn:disabled{opacity:.55;cursor:not-allowed}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.between{justify-content:space-between}
.muted{color:var(--dim);font-size:13px}
.list-item{display:flex;gap:12px;align-items:center;padding:10px 0;border-bottom:1px solid var(--line)}
.list-item:last-child{border-bottom:0}
.thumb{width:56px;height:74px;border-radius:8px;background:#1d1f28 center/cover no-repeat;flex:none;position:relative;overflow:hidden}
.thumb span{position:absolute;left:4px;bottom:4px;font-size:10px;color:#fff;text-shadow:0 1px 3px #000}
.pill{padding:2px 8px;border-radius:999px;border:1px solid var(--line);font-size:11px;color:var(--dim)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:3px}
.grid .g{aspect-ratio:9/16;background:#1a1c24 center/cover no-repeat;border-radius:6px;position:relative;overflow:hidden}
.grid .g i{position:absolute;left:5px;bottom:5px;font-size:11px;font-style:normal;color:#fff;text-shadow:0 1px 3px #000}
.empty-state{display:grid;gap:8px;place-content:center;text-align:center;padding:48px 16px;color:var(--dim)}
.empty-state b{color:var(--ink);font-size:16px}
.spin{width:18px;height:18px;border:2px solid var(--line);border-top-color:var(--ink);border-radius:999px;animation:spin .8s linear infinite;display:inline-block;vertical-align:-3px}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- MODAL LOGIN ---------- */
.modal{position:fixed;inset:0;z-index:60;background:rgba(0,0,0,.72);backdrop-filter:blur(4px);display:grid;place-items:end center}
.modal[hidden]{display:none}
.modal .sheet{
  width:100%;max-width:520px;background:var(--bg);border-top-left-radius:18px;border-top-right-radius:18px;
  border-top:1px solid var(--line);padding:18px 18px calc(22px + env(safe-area-inset-bottom));
}
.modal h2{font:700 17px var(--font);margin:0 0 4px}
.modal .close{position:absolute;top:12px;right:14px;background:none;border:0;color:var(--dim);font-size:22px;cursor:pointer;line-height:1}
.toast{
  position:fixed;left:50%;transform:translateX(-50%);bottom:calc(var(--nav-h) + 24px + env(safe-area-inset-bottom));
  background:rgba(20,21,28,.95);border:1px solid var(--line);color:var(--ink);padding:10px 16px;border-radius:999px;
  font-size:13px;z-index:70;opacity:0;transition:opacity .2s;pointer-events:none;max-width:86vw;text-align:center;
}
.toast.on{opacity:1}