/* =========================================================
   Neo Learn — Teen-Friendly Theme (Supabase edition)
   ========================================================= */
:root {
  --bg-0: #0a0618;

  --ink:   #f3ecff;
  --ink-2: #b6adda;
  --ink-3: #7e7aa3;

  --glass: rgba(255,255,255,0.06);
  --glass-strong: rgba(255,255,255,0.10);
  --stroke: rgba(255,255,255,0.10);
  --stroke-2: rgba(255,255,255,0.18);

  --c1: #a78bfa;
  --c2: #ec4899;
  --c3: #fb923c;
  --c4: #22d3ee;
  --c5: #34d399;
  --c6: #facc15;

  --grad-main: linear-gradient(135deg, #a78bfa 0%, #ec4899 55%, #fb923c 100%);
  --grad-cool: linear-gradient(135deg, #22d3ee 0%, #a78bfa 100%);
  --grad-warm: linear-gradient(135deg, #fb923c 0%, #ec4899 100%);
  --grad-card: linear-gradient(140deg, rgba(167,139,250,.12), rgba(236,72,153,.08) 60%, rgba(251,146,60,.05));

  --ring: 0 0 0 3px rgba(167,139,250,.35);
  --shadow-xl: 0 22px 50px -18px rgba(167,139,250,.45), 0 6px 24px -10px rgba(236,72,153,.30);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 22px;
  --radius-xl: 28px;
  --radius-full: 999px;

  --ease: cubic-bezier(.2,.9,.25,1.2);
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0; min-height: 100%;
  background:
    radial-gradient(1200px 800px at 10% -10%, #2a1260 0%, transparent 60%),
    radial-gradient(900px 700px at 110% 10%, #7b2a8b 0%, transparent 55%),
    radial-gradient(1000px 900px at 50% 120%, #2b0e5a 0%, transparent 60%),
    var(--bg-0);
  background-attachment: fixed;
  color: var(--ink);
  font-family: "Plus Jakarta Sans","IBM Plex Sans Thai","Noto Sans Thai",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  -webkit-font-smoothing: antialiased;
  letter-spacing: -0.005em;
}
body::before {
  content: ''; position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background:
    radial-gradient(3px 3px at 20% 30%, rgba(255,255,255,.5), transparent 60%),
    radial-gradient(2px 2px at 80% 60%, rgba(255,255,255,.35), transparent 60%),
    radial-gradient(2px 2px at 40% 80%, rgba(255,255,255,.3), transparent 60%),
    radial-gradient(2px 2px at 70% 20%, rgba(255,255,255,.35), transparent 60%);
  opacity: .35;
}
#app { position: relative; z-index: 1; }

a { color: var(--c1); cursor: pointer; text-decoration: none; transition: color .15s; }
a:hover { color: var(--c2); }

input, select, textarea, button {
  font: inherit; color: var(--ink);
  border-radius: var(--radius-md);
  border: 1px solid var(--stroke-2);
  background: rgba(10,4,30,0.55);
  padding: 12px 14px; outline: none;
  transition: border-color .15s, box-shadow .15s, transform .1s, background .15s;
}
input::placeholder, textarea::placeholder { color: var(--ink-3); }
input:focus, select:focus, textarea:focus {
  border-color: var(--c1);
  box-shadow: var(--ring);
  background: rgba(20,10,50,0.75);
}

button {
  cursor: pointer;
  background: var(--grad-main); background-size: 180% 180%;
  color: #fff; border: none; font-weight: 700;
  padding: 11px 18px; border-radius: var(--radius-full);
  box-shadow: 0 6px 20px -6px rgba(236,72,153,.55);
  transition: transform .15s var(--ease), box-shadow .2s, filter .2s, background-position .4s;
}
button:hover { transform: translateY(-1px) scale(1.02); background-position: 100% 0; filter: brightness(1.05); }
button:active { transform: translateY(0) scale(.98); }
button.ghost  { background: var(--glass); color: var(--ink); border: 1px solid var(--stroke-2); box-shadow: none; }
button.ghost:hover { background: var(--glass-strong); border-color: var(--c1); }
button.warn   { background: linear-gradient(135deg, #facc15, #fb923c); color: #271500; }
button.danger { background: linear-gradient(135deg, #ff5e87, #e11d48); color: #fff; box-shadow: 0 6px 20px -6px rgba(225,29,72,.55); }
button:disabled { opacity: .45; cursor: not-allowed; filter: grayscale(.3); }

/* Topbar */
.topbar {
  display: grid; grid-template-columns: auto 1fr auto; gap: 16px;
  align-items: center; padding: 14px 22px;
  position: sticky; top: 14px; margin: 14px 16px 0;
  border-radius: var(--radius-xl);
  background: rgba(17, 8, 40, 0.6);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border: 1px solid var(--stroke-2);
  box-shadow: var(--shadow-xl);
  z-index: 50;
}
.brand { display: flex; align-items: baseline; gap: 10px; cursor: pointer; user-select: none; }
.brand b {
  font-size: 22px; letter-spacing: -0.03em;
  background: var(--grad-main); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.brand .logo {
  width: 34px; height: 34px; border-radius: 10px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--grad-main); color: #fff; font-weight: 900; font-size: 18px;
  box-shadow: 0 6px 20px -4px rgba(236,72,153,.55);
  transform: rotate(-6deg);
}
.brand small { color: var(--ink-3); margin-left: 2px; font-size: 12px; }

.nav { display: flex; gap: 6px; justify-content: center; flex-wrap: wrap; }
.nav a {
  padding: 8px 14px; border-radius: var(--radius-full);
  color: var(--ink-2); font-weight: 600; font-size: 14px;
  transition: background .15s, color .15s, transform .1s;
}
.nav a:hover, .nav a.active { background: var(--glass-strong); color: var(--ink); text-decoration: none; transform: translateY(-1px); }

.account { display: flex; gap: 10px; align-items: center; }
#globalSearch {
  width: 260px; padding-left: 38px;
  background: rgba(10,4,30,0.55) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%23b6adda' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><circle cx='11' cy='11' r='8'/><path d='m21 21-4.3-4.3'/></svg>") 12px center no-repeat;
}

/* Layout */
.view { max-width: 1180px; margin: 28px auto; padding: 0 20px 100px; animation: fadeUp .4s var(--ease); }
@keyframes fadeUp { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.foot { text-align: center; color: var(--ink-3); padding: 18px; font-size: 12px; }

/* Cards */
.card {
  background: var(--glass);
  backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--stroke);
  border-radius: var(--radius-lg);
  padding: 20px; position: relative; overflow: hidden;
}
.card::before { content: ''; position: absolute; inset: 0; background: var(--grad-card); pointer-events: none; opacity: .7; }
.card > * { position: relative; z-index: 1; }

.stack > * + * { margin-top: 14px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; }
.row > * { flex: 1 1 260px; }
.grid { display: grid; gap: 18px; }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 980px) { .grid.cols-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 720px) {
  .topbar { grid-template-columns: 1fr; text-align: center; }
  .nav { justify-content: center; }
  .grid.cols-2, .grid.cols-3 { grid-template-columns: 1fr; }
  #globalSearch { width: 100%; }
}

.muted { color: var(--ink-2); }
.tag {
  display: inline-block; font-size: 11px; padding: 3px 10px;
  border-radius: var(--radius-full);
  background: rgba(167,139,250,.15); color: var(--c1);
  margin-right: 4px; font-weight: 600;
}
.pill {
  display: inline-block; padding: 4px 12px;
  border-radius: var(--radius-full);
  background: var(--grad-cool); color: #0c0420;
  font-size: 11px; font-weight: 700;
}
h1, h2, h3 { margin: 0 0 8px; letter-spacing: -0.02em; }
h1 { font-size: 32px; font-weight: 800; }
h1 .gradient, .gradient-text {
  background: var(--grad-main); -webkit-background-clip: text; background-clip: text; color: transparent;
}
h2 { font-size: 20px; font-weight: 700; }
h3 { font-size: 17px; font-weight: 700; }
.sep { height: 1px; background: var(--stroke); margin: 16px 0; }

/* Content cards */
.content-card {
  background: var(--glass);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--stroke);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex; flex-direction: column; gap: 10px;
  cursor: pointer; position: relative; overflow: hidden;
  transition: transform .25s var(--ease), border-color .2s, box-shadow .25s;
}
.content-card::before {
  content: ''; position: absolute; inset: 0; z-index: 0;
  background: var(--grad-card); opacity: .6; transition: opacity .25s;
}
.content-card::after {
  content: ''; position: absolute; top: -60%; left: -20%;
  width: 140%; height: 180%; pointer-events: none; z-index: 0;
  background: radial-gradient(closest-side, rgba(236,72,153,.25), transparent 70%);
  opacity: 0; transition: opacity .3s;
}
.content-card:hover { transform: translateY(-4px); border-color: rgba(167,139,250,.45); box-shadow: var(--shadow-xl); }
.content-card:hover::after { opacity: 1; }
.content-card > * { position: relative; z-index: 1; }
.content-card h3 { margin: 0; font-size: 16px; font-weight: 700; line-height: 1.3; }
.content-card .meta {
  color: var(--ink-2); font-size: 12px;
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 4px;
}
.content-card .summary { color: var(--ink-2); font-size: 13.5px; min-height: 38px; line-height: 1.45; }

/* Subject chips */
.subject-chip {
  padding: 22px; border-radius: var(--radius-lg);
  background: var(--glass); border: 1px solid var(--stroke);
  cursor: pointer; position: relative; overflow: hidden;
  transition: transform .25s var(--ease), border-color .2s, box-shadow .25s;
}
.subject-chip::before { content: ''; position: absolute; inset: 0; background: var(--grad-main); opacity: .15; transition: opacity .25s; }
.subject-chip:hover { transform: translateY(-3px) scale(1.01); border-color: var(--c2); box-shadow: var(--shadow-xl); }
.subject-chip:hover::before { opacity: .28; }
.subject-chip b { position: relative; font-size: 17px; }
.subject-chip small { position: relative; color: var(--ink-2); display: block; margin-top: 8px; font-size: 13px; }
.subject-chip .emoji { position: relative; font-size: 32px; margin-bottom: 6px; display: block; }

/* Comments */
.comment {
  padding: 12px 14px; margin: 10px 0;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--stroke);
}
.comment .who { color: var(--c4); font-weight: 700; font-size: 13px; }
.comment .when { color: var(--ink-3); font-size: 11px; }
.comment .actions { margin-top: 6px; }
.comment.deleted { opacity: .55; font-style: italic; }

/* Star rating */
.star { cursor: pointer; font-size: 24px; color: rgba(255,255,255,0.18); transition: transform .15s var(--ease), color .15s, text-shadow .15s; }
.star:hover { transform: scale(1.2) rotate(-5deg); }
.star.on { color: var(--c6); text-shadow: 0 0 12px rgba(250,204,21,.65); }

/* Tables */
.kv { display: grid; grid-template-columns: 130px 1fr; gap: 10px 14px; align-items: center; }
table.data { width: 100%; border-collapse: collapse; }
table.data th, table.data td { padding: 10px 12px; border-bottom: 1px solid var(--stroke); text-align: left; font-size: 14px; }
table.data th { color: var(--ink-3); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .05em; }
table.data tr:hover td { background: var(--glass-strong); }

/* Planner */
.planner { display: grid; grid-template-columns: 340px 1fr; gap: 18px; }
@media (max-width: 820px) { .planner { grid-template-columns: 1fr; } }
.day-grid {
  display: grid; grid-template-columns: 66px 1fr; gap: 2px;
  background: rgba(0,0,0,0.25);
  border-radius: var(--radius-md); overflow: hidden;
  border: 1px solid var(--stroke);
}
.hour-label { color: var(--ink-3); font-size: 11px; font-weight: 600; text-align: right; padding: 6px 10px; background: rgba(10,4,30,0.4); }
.hour-slot { position: relative; background: rgba(10,4,30,0.25); min-height: 42px; padding: 3px 6px; transition: background .2s; }
.hour-slot:hover { background: rgba(167,139,250,.08); }
.task-block {
  background: var(--grad-cool); border-radius: 12px; padding: 6px 10px;
  font-size: 12.5px; color: #0b0420; font-weight: 600;
  cursor: grab; margin: 3px 0;
  display: flex; gap: 8px; align-items: center;
  box-shadow: 0 4px 12px -4px rgba(34,211,238,.45);
  transition: transform .1s;
}
.task-block.done { text-decoration: line-through; opacity: .55; filter: grayscale(.3); }
.task-block input[type=checkbox] { accent-color: var(--c5); width: 16px; height: 16px; }
.inbox-task {
  background: var(--glass); padding: 12px 14px;
  border-radius: var(--radius-md); margin-bottom: 10px;
  cursor: grab; display: flex; justify-content: space-between; align-items: center;
  border: 1px solid var(--stroke);
  transition: transform .15s, border-color .15s;
}
.inbox-task:hover { border-color: var(--c1); transform: translateX(3px); }
.inbox-task.dragging { opacity: .45; transform: scale(.98); }

/* Toast */
.toast {
  position: fixed; bottom: 28px; left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(20, 8, 45, 0.92);
  backdrop-filter: blur(18px); -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--stroke-2);
  padding: 12px 20px; border-radius: var(--radius-full);
  color: var(--ink); font-weight: 600;
  opacity: 0; transition: .25s var(--ease);
  pointer-events: none; z-index: 999;
  box-shadow: var(--shadow-xl);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.ok  { border-color: rgba(52,211,153,.5); }
.toast.err { border-color: rgba(255,94,135,.5); }
.err { color: #ff8ba3; }
.ok  { color: var(--c5); }

/* Auth */
.auth-wrap { max-width: 440px; margin: 60px auto; position: relative; }
.auth-wrap::before {
  content: ''; position: absolute; inset: -40px -60px;
  background:
    radial-gradient(350px 300px at 10% 0%, rgba(167,139,250,.45), transparent 70%),
    radial-gradient(350px 300px at 90% 100%, rgba(236,72,153,.35), transparent 70%);
  pointer-events: none; z-index: -1;
  filter: blur(20px);
}
.auth-wrap h1 { text-align: center; font-size: 34px; }
.auth-wrap .providers { display: grid; gap: 10px; margin-top: 14px; }
.provider-btn {
  padding: 12px; border-radius: var(--radius-full);
  border: 1px solid var(--stroke-2);
  background: var(--glass); color: var(--ink);
  cursor: pointer; font-weight: 700;
  transition: transform .15s, box-shadow .2s, filter .2s;
}
.provider-btn:hover { transform: translateY(-1px); }
.provider-btn.line  { background: linear-gradient(135deg, #06c755, #05a547); color: #fff; border: none; box-shadow: 0 6px 20px -6px rgba(6,199,85,.55); }
.provider-btn.thaid { background: linear-gradient(135deg, #3b82f6, #1d3a8a); color: #fff; border: none; box-shadow: 0 6px 20px -6px rgba(59,130,246,.55); }

/* Avatar */
.avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--grad-main);
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; font-size: 14px; font-weight: 800;
  overflow: hidden; border: 2px solid var(--stroke-2);
  box-shadow: 0 4px 12px -3px rgba(167,139,250,.5);
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(167,139,250,.3); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: rgba(167,139,250,.5); }
::selection { background: rgba(236,72,153,.35); color: #fff; }

/* Hero */
.hero {
  position: relative; overflow: hidden;
  border-radius: var(--radius-xl);
  padding: 40px 32px;
  background:
    radial-gradient(500px 300px at 10% 10%, rgba(167,139,250,.4), transparent 60%),
    radial-gradient(500px 300px at 90% 80%, rgba(236,72,153,.35), transparent 60%),
    rgba(12, 6, 30, 0.6);
  border: 1px solid var(--stroke-2);
  box-shadow: var(--shadow-xl);
  margin-bottom: 20px;
}
.hero h1 { font-size: 38px; font-weight: 800; line-height: 1.1; }
.hero p { color: var(--ink-2); font-size: 15px; margin: 8px 0 0; }
.hero .chips { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }
.hero .chips .pill { cursor: pointer; }

/* FAB */
.fab {
  position: fixed; right: 24px; bottom: 24px; z-index: 40;
  width: 60px; height: 60px; border-radius: 50%;
  background: var(--grad-main);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 26px; font-weight: 900;
  box-shadow: 0 14px 30px -8px rgba(236,72,153,.6), 0 6px 20px -6px rgba(167,139,250,.5);
  cursor: pointer; user-select: none;
  transition: transform .2s var(--ease), box-shadow .2s;
  border: none;
}
.fab:hover { transform: translateY(-3px) rotate(90deg); }

/* Dialog */
.dialog {
  position: fixed; inset: 8% 10%; z-index: 60;
  background: rgba(20, 8, 45, 0.85);
  backdrop-filter: blur(22px); -webkit-backdrop-filter: blur(22px);
  border: 1px solid var(--stroke-2);
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: var(--shadow-xl);
  overflow: auto;
  animation: pop .2s var(--ease);
}
@keyframes pop { from { opacity: 0; transform: scale(.96); } to { opacity: 1; transform: none; } }

.empty { text-align: center; padding: 60px 20px; color: var(--ink-2); }
.empty .emoji { font-size: 52px; display: block; margin-bottom: 12px; }

.loader {
  display: inline-block; width: 22px; height: 22px;
  border: 3px solid rgba(255,255,255,.2);
  border-top-color: var(--c2);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }