:root {
  --bg: #0f172a;
  --bg2: #1e293b;
  --panel: #1e293b;
  --panel2: #273449;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent2: #0ea5e9;
  --green: #22c55e;
  --orange: #f59e0b;
  --red: #ef4444;
  --border: #334155;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: radial-gradient(1200px 600px at 80% -10%, #1d3055 0%, var(--bg) 55%);
  color: var(--text);
  min-height: 100vh;
}

/* ---------- Topbar ---------- */
.topbar {
  display: flex; align-items: center; gap: 18px;
  flex-wrap: wrap;
  padding: 14px 22px;
  background: rgba(15,23,42,.7);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 20;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand h1 { font-size: 20px; margin: 0; letter-spacing: .5px; }
.logo { font-size: 24px; }

.tabs { display: flex; gap: 6px; margin-left: 8px; }
.tab {
  background: transparent; border: 1px solid transparent;
  color: var(--muted); padding: 8px 14px; border-radius: 999px;
  cursor: pointer; font-size: 14px; font-weight: 600; transition: .15s;
}
.tab:hover { color: var(--text); background: var(--panel2); }
.tab.active { color: #fff; background: var(--accent2); }

.datebox { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.datebox input[type=date] {
  background: var(--panel); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px; padding: 6px 8px;
  font-size: 14px;
}
.iconbtn {
  background: var(--panel); border: 1px solid var(--border); color: var(--text);
  width: 32px; height: 32px; border-radius: 8px; cursor: pointer; font-size: 18px; line-height: 1;
}
.iconbtn:hover { background: var(--panel2); }
.ghostbtn {
  background: transparent; border: 1px solid var(--border); color: var(--muted);
  padding: 7px 12px; border-radius: 8px; cursor: pointer; font-size: 13px; font-weight: 600;
}
.ghostbtn:hover { color: var(--text); border-color: var(--accent); }

/* ---------- Layout ---------- */
main { max-width: 860px; margin: 0 auto; padding: 24px 18px 80px; }
.view { display: none; flex-direction: column; gap: 18px; }
.view.active { display: flex; }

.panel {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow);
}
.panel h2 { margin: 0 0 14px; font-size: 17px; }
.panel-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.panel-head h2 { margin: 0; }

/* ---------- Buttons ---------- */
button.primary {
  background: linear-gradient(180deg, var(--accent), var(--accent2));
  color: #022; border: none; border-radius: 10px; padding: 10px 16px;
  font-weight: 700; cursor: pointer; font-size: 14px; transition: .15s;
}
button.primary:hover { filter: brightness(1.08); }
button.primary:active { transform: translateY(1px); }
button.big { padding: 14px 26px; font-size: 16px; }

/* ---------- Task form ---------- */
.taskform { display: flex; gap: 10px; flex-wrap: wrap; }
.taskform input[type=text] {
  flex: 1 1 240px; min-width: 180px;
  background: var(--bg2); border: 1px solid var(--border); color: var(--text);
  border-radius: 10px; padding: 11px 14px; font-size: 15px;
}
.taskform select {
  background: var(--bg2); border: 1px solid var(--border); color: var(--text);
  border-radius: 10px; padding: 11px 12px; font-size: 14px;
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 0; }

/* ---------- Stats bar ---------- */
.stats { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--muted); }
.bar { width: 120px; height: 8px; background: var(--bg2); border-radius: 999px; overflow: hidden; }
.barfill { height: 100%; width: 0%; background: linear-gradient(90deg, var(--green), #4ade80); transition: width .3s; }

/* ---------- Task list ---------- */
.tasklist { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.task {
  display: flex; align-items: center; gap: 12px;
  background: var(--bg2); border: 1px solid var(--border); border-left: 4px solid var(--muted);
  border-radius: 10px; padding: 12px 14px; transition: .15s;
}
.task.prio-3 { border-left-color: var(--red); }
.task.prio-2 { border-left-color: var(--orange); }
.task.prio-1 { border-left-color: var(--green); }
.task.done { opacity: .55; }
.task.done .task-title { text-decoration: line-through; }
.task .check {
  width: 24px; height: 24px; border-radius: 6px; border: 2px solid var(--accent);
  background: transparent; cursor: pointer; flex: 0 0 auto; display: grid; place-items: center;
  color: transparent; font-size: 15px; font-weight: 900;
}
.task.done .check { background: var(--green); border-color: var(--green); color: #042; }
.task-body { flex: 1; min-width: 0; }
.task-title { font-weight: 600; word-break: break-word; }
.task-badge { font-size: 11px; color: var(--muted); }
.task .del { background: transparent; border: none; color: var(--muted); cursor: pointer; font-size: 18px; padding: 4px 6px; border-radius: 6px; }
.task .del:hover { color: var(--red); background: rgba(239,68,68,.12); }

.empty { color: var(--muted); text-align: center; padding: 18px; font-size: 14px; }
.hidden { display: none !important; }

/* ---------- Timer ---------- */
.timerpanel { text-align: center; }
.clock {
  font-size: clamp(48px, 12vw, 84px); font-weight: 800; letter-spacing: 2px;
  font-variant-numeric: tabular-nums; color: #fff;
  text-shadow: 0 0 30px rgba(56,189,248,.3);
}
.clock-sub { color: var(--muted); margin-bottom: 18px; font-size: 14px; }
.timer-controls { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.timer-state { margin-top: 16px; font-size: 14px; color: var(--muted); }
.timer-state.running { color: var(--green); font-weight: 700; }
body.running .clock { color: var(--green); text-shadow: 0 0 40px rgba(34,197,94,.4); }

.hint { color: var(--muted); font-size: 14px; line-height: 1.6; margin: 0 0 16px; }
.settings-row { margin-bottom: 16px; }
.settings-row label { display: flex; justify-content: space-between; font-size: 13px; color: var(--muted); margin-bottom: 8px; font-weight: 600; }
.rangeval { color: var(--accent); font-weight: 700; }
.settings-row input[type=range] { width: 100%; accent-color: var(--accent); }
.dual { display: flex; flex-direction: column; gap: 6px; }
.alert-meta { display: flex; gap: 18px; flex-wrap: wrap; font-size: 13px; color: var(--muted); margin-top: 8px; }
.alert-meta b { color: var(--text); }

/* ---------- History ---------- */
.history { width: 100%; border-collapse: collapse; font-size: 14px; }
.history th, .history td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); }
.history th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .5px; }
.history tr:hover td { background: var(--bg2); }
.history-summary { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 16px; }
.history-summary .card {
  flex: 1 1 140px; background: var(--bg2); border: 1px solid var(--border);
  border-radius: 12px; padding: 14px;
}
.history-summary .card .big { font-size: 24px; font-weight: 800; color: var(--accent); }
.history-summary .card .lbl { font-size: 12px; color: var(--muted); }

/* ---------- Overlay alert ---------- */
.overlay {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(2,6,23,.82); backdrop-filter: blur(6px);
  display: grid; place-items: center; padding: 20px;
  animation: fadein .2s ease;
}
@keyframes fadein { from { opacity: 0; } to { opacity: 1; } }
.overlay-card {
  background: linear-gradient(180deg, #1e293b, #0f172a);
  border: 2px solid var(--red); border-radius: 20px;
  padding: 34px 30px; text-align: center; max-width: 380px; width: 100%;
  box-shadow: 0 0 60px rgba(239,68,68,.4);
  animation: pop .25s cubic-bezier(.2,1.4,.4,1);
}
@keyframes pop { from { transform: scale(.8); } to { transform: scale(1); } }
.overlay-emoji { font-size: 52px; animation: shake .5s infinite; }
@keyframes shake { 0%,100%{transform:rotate(-8deg);} 50%{transform:rotate(8deg);} }
.overlay-card h2 { margin: 8px 0; }
.overlay-card p { color: var(--muted); font-size: 14px; margin: 0 0 14px; }
.countdown {
  font-size: 56px; font-weight: 900; color: var(--red);
  font-variant-numeric: tabular-nums; margin: 6px 0 18px;
}

/* ---------- Toast ---------- */
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--panel2); border: 1px solid var(--border); color: var(--text);
  padding: 12px 20px; border-radius: 12px; box-shadow: var(--shadow);
  z-index: 90; font-size: 14px; font-weight: 600;
  animation: slideup .25s ease;
}
.toast.success { border-color: var(--green); }
.toast.danger { border-color: var(--red); }
@keyframes slideup { from { transform: translate(-50%, 20px); opacity: 0; } to { transform: translate(-50%,0); opacity: 1; } }

/* ---------- User box ---------- */
.userbox { display: flex; align-items: center; gap: 8px; }
.useremail { font-size: 13px; color: var(--muted); max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- Pills ---------- */
.pill {
  background: var(--bg2); border: 1px solid var(--border); border-radius: 999px;
  padding: 5px 12px; font-size: 13px; color: var(--muted);
}
.pill b { color: var(--text); }
.hint.small { font-size: 13px; margin: -4px 0 12px; }
.task.done { opacity: .4; transform: translateX(8px); transition: .2s; }

/* ---------- Change password modal ---------- */
.pw-card { max-width: 360px; text-align: center; border-color: var(--accent); box-shadow: 0 0 50px rgba(56,189,248,.3); }
.pw-card h2 { margin: 6px 0 16px; }
.pw-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 6px; }

/* ---------- Auth page ---------- */
.auth-body { display: grid; place-items: center; min-height: 100vh; padding: 20px; }
.auth-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 18px;
  padding: 36px 30px; width: 100%; max-width: 380px; box-shadow: var(--shadow); text-align: center;
}
.auth-logo { font-size: 44px; }
.auth-card h1 { margin: 8px 0 4px; font-size: 22px; }
.auth-sub { color: var(--muted); font-size: 14px; margin: 0 0 22px; }
.auth-form { display: flex; flex-direction: column; gap: 14px; text-align: left; }
.auth-form label { font-size: 13px; color: var(--muted); font-weight: 600; display: flex; flex-direction: column; gap: 6px; }
.auth-form input {
  background: var(--bg2); border: 1px solid var(--border); color: var(--text);
  border-radius: 10px; padding: 11px 14px; font-size: 15px;
}
.auth-form button { margin-top: 6px; width: 100%; }
.auth-error {
  margin-top: 16px; background: rgba(239,68,68,.12); border: 1px solid var(--red);
  color: #fecaca; border-radius: 10px; padding: 10px 14px; font-size: 14px;
}
.auth-switch { margin-top: 20px; font-size: 14px; color: var(--muted); }
.auth-switch a { color: var(--accent); text-decoration: none; font-weight: 600; }
.auth-switch a:hover { text-decoration: underline; }

@media (max-width: 620px) {
  .topbar { gap: 10px; }
  .datebox { margin-left: 0; width: 100%; }
  .tabs { order: 3; width: 100%; justify-content: space-between; }
  .tab { flex: 1; }
}