/* ============================================================
   TimeTracker Web — iOS-inspired design system
   ============================================================ */

:root {
  --bg:       #f2f2f7;
  --card:     #ffffff;
  --text:     #1c1c1e;
  --text2:    #3c3c43;
  --muted:    #8e8e93;
  --sep:      rgba(60,60,67,0.12);
  --accent:   #007aff;
  --red:      #ff3b30;
  --green:    #34c759;
  --tab-bg:   rgba(249,249,249,0.94);
  --tab-border: rgba(60,60,67,0.29);
  --font:     -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono:     ui-monospace, "SF Mono", SFMono-Regular, Menlo, monospace;
  /* iOS task colors */
  --c0: #007aff; --c1: #af52de; --c2: #ff9500; --c3: #34c759;
  --c4: #ff2d55; --c5: #5ac8fa; --c6: #5856d6; --c7: #00c7be;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg:       #000000;
    --card:     #1c1c1e;
    --text:     #f2f2f7;
    --text2:    #ebebf5;
    --muted:    #8e8e93;
    --sep:      rgba(84,84,88,0.65);
    --tab-bg:   rgba(30,30,30,0.94);
    --tab-border: rgba(84,84,88,0.65);
  }
}

/* ---- Reset & base ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { height: 100%; -webkit-text-size-adjust: 100%; }
body {
  font: 15px/1.47 var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100%; display: flex; flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* ---- Welcome / Sign-in ---- */
[hidden] { display: none !important; }
#welcome {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; padding: 32px 24px; text-align: center;
}
.welcome-inner { max-width: 340px; }
.welcome-icon { color: var(--muted); margin-bottom: 20px; }
#welcome h1 { font-size: 28px; font-weight: 700; margin-bottom: 8px; }
#welcome p { color: var(--muted); font-size: 15px; line-height: 1.5; margin-bottom: 28px; }

/* ---- Header ---- */
header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 20px;
  background: var(--tab-bg);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 0.5px solid var(--tab-border);
  position: sticky; top: 0; z-index: 100;
}
header h1 { font-size: 17px; font-weight: 600; }
#auth-area { display: flex; align-items: center; gap: 10px; }
#user-status { font-size: 13px; color: var(--muted); }
.link-btn {
  background: none; border: none; color: var(--accent);
  font: inherit; font-size: 13px; cursor: pointer; padding: 4px 0;
}

/* ---- Tab bar ---- */
#tab-bar {
  display: flex; justify-content: space-around; align-items: flex-end;
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 100;
  background: var(--tab-bg);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-top: 0.5px solid var(--tab-border);
  padding: 6px 0 max(env(safe-area-inset-bottom, 8px), 8px);
}
#tab-bar .tab {
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  background: none; border: none; cursor: pointer;
  color: var(--muted); font-size: 10px; font-weight: 500;
  padding: 4px 12px; min-width: 56px;
  font-family: var(--font);
}
#tab-bar .tab.active { color: var(--accent); }
#tab-bar .tab svg { display: block; }

/* ---- Tab panels ---- */
main {
  flex: 1; max-width: 600px; width: 100%; margin: 0 auto;
  padding: 0 0 calc(72px + env(safe-area-inset-bottom, 0px));
}
.tab-panel { display: none; padding: 16px; }
.tab-panel.active { display: block; }

/* ---- iOS grouped list ---- */
.section-group { margin-bottom: 24px; }
.section-header {
  font-size: 13px; font-weight: 400; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.02em;
  padding: 0 16px 6px;
}
.section-header-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0 16px 6px;
}
.section-header-row .section-header { padding: 0; }
.ios-list {
  background: var(--card);
  border-radius: 12px;
  overflow: hidden;
}
.ios-row {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 16px;
  min-height: 44px;
  position: relative;
}
.ios-row + .ios-row::before {
  content: ''; position: absolute; top: 0; left: 16px; right: 0;
  height: 0.5px; background: var(--sep);
}

/* ---- Task rows ---- */
.task-row { cursor: default; }
.task-name { flex: 1; font-size: 15px; }
.task-name.editable { cursor: pointer; }
.task-name.editable:hover { color: var(--accent); }
.task-name-input {
  flex: 1; font: inherit; font-size: 15px; color: var(--text);
  background: transparent; border: 1px solid var(--accent);
  border-radius: 8px; padding: 4px 8px; outline: none;
}
.icon-btn {
  background: none; border: none; cursor: pointer; padding: 0;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.play-btn { color: var(--accent); }
.stop-btn { color: var(--red); }

/* ---- Add task form ---- */
.add-task-row {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 16px;
  background: var(--card);
  border-radius: 12px; margin-top: 8px;
}
.add-task-row input {
  flex: 1; font: inherit; font-size: 15px; color: var(--text);
  background: transparent; border: none; outline: none;
}
.add-task-row input::placeholder { color: var(--muted); }
.add-btn {
  background: none; border: none; cursor: pointer; color: var(--accent);
  display: flex; align-items: center; padding: 2px;
}

/* ---- Running banner ---- */
.running-banner {
  display: flex; align-items: center; gap: 12px;
  background: var(--card); border-radius: 12px;
  padding: 14px 16px; margin-bottom: 16px;
  border-left: 4px solid var(--green);
}
.running-info { flex: 1; min-width: 0; }
.running-label { display: block; font-size: 11px; font-weight: 600; text-transform: uppercase; color: var(--green); letter-spacing: 0.04em; }
.running-task-name { display: block; font-size: 15px; font-weight: 500; margin-top: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.running-time {
  font-family: var(--mono); font-size: 22px; font-weight: 600;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* ---- Timer view (big display) ---- */
.timer-view {
  display: flex; align-items: center; justify-content: center;
  min-height: calc(100vh - 180px); text-align: center;
}
.empty-state { color: var(--muted); }
.empty-title { font-size: 17px; font-weight: 600; margin-top: 16px; color: var(--text); }
.empty-sub { font-size: 15px; margin-top: 4px; }
.timer-task-name { font-size: 22px; font-weight: 600; margin-bottom: 8px; }
.timer-display {
  font-family: var(--mono); font-size: 64px; font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -1px;
}
.stop-pill {
  margin-top: 32px;
  background: var(--red); color: #fff;
  border: none; border-radius: 12px;
  font: inherit; font-size: 17px; font-weight: 600;
  padding: 14px 48px; cursor: pointer;
}
.stop-pill:active { opacity: 0.8; }

/* ---- Entry log ---- */
.range-select {
  font: inherit; font-size: 13px; color: var(--accent);
  background: transparent; border: 1px solid var(--sep);
  border-radius: 8px; padding: 4px 10px; cursor: pointer;
}
.entry-row { cursor: default; }
.entry-row .entry-col { display: flex; flex-direction: column; flex: 1; min-width: 0; gap: 2px; }
.entry-task-name { font-size: 15px; font-weight: 500; }
.entry-time-range { font-size: 13px; color: var(--muted); font-family: var(--mono); font-variant-numeric: tabular-nums; }
.entry-time-range .editable-time { color: var(--accent); cursor: pointer; }
.entry-time-range .editable-time:hover { text-decoration: underline; }
.entry-duration {
  font-family: var(--mono); font-size: 15px; font-weight: 500;
  font-variant-numeric: tabular-nums; color: var(--text2);
  white-space: nowrap; text-align: right;
}
.entry-actions { display: flex; gap: 4px; }
.entry-delete-btn {
  background: none; border: none; cursor: pointer; color: var(--muted);
  font-size: 12px; padding: 4px; display: flex; align-items: center;
}
.entry-delete-btn:hover { color: var(--red); }
.time-edit-wrapper {
  display: inline-flex; align-items: center; gap: 4px; flex-wrap: nowrap;
}
.time-input {
  font: inherit; font-size: 13px; color: var(--text);
  background: var(--bg); border: 1px solid var(--accent);
  border-radius: 6px; padding: 4px 6px; outline: none;
}
.time-edit-btn {
  border: none; cursor: pointer; font-size: 11px; font-weight: 600;
  border-radius: 6px; padding: 4px 8px; white-space: nowrap;
  font-family: var(--font);
}
.time-edit-btn.save { background: var(--accent); color: #fff; }
.time-edit-btn.cancel { background: transparent; color: var(--muted); font-size: 13px; padding: 4px 6px; }
.entry-notes { font-size: 12px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---- Report range pills (iOS style) ---- */
.range-pills {
  display: flex; gap: 0; padding: 0 16px; margin-bottom: 16px;
}
.range-pills .pill {
  flex: 1; background: none; border: none; cursor: pointer;
  font: inherit; font-size: 14px; font-weight: 400;
  color: var(--muted); padding: 8px 0; text-align: center;
  position: relative;
}
.range-pills .pill.active {
  font-weight: 600; color: var(--accent);
  background: rgba(0,122,255,0.12);
  border-radius: 8px;
}
.custom-dates {
  display: flex; align-items: center; gap: 10px;
  padding: 0 16px; margin-bottom: 16px;
}
.custom-dates input[type="date"] {
  font: inherit; font-size: 14px; color: var(--text);
  background: var(--card); border: 1px solid var(--sep);
  border-radius: 8px; padding: 8px 10px;
}
.date-sep { color: var(--muted); font-size: 13px; }

/* ---- Donut chart ---- */
.chart-container {
  position: relative; width: 220px; height: 220px;
  margin: 0 auto 24px;
}
#pie-chart { display: block; width: 100%; height: 100%; }
.chart-center-label {
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  text-align: center; pointer-events: none;
}
.chart-center-sub { display: block; font-size: 12px; color: var(--muted); }
.chart-center-time {
  display: block; font-family: var(--mono); font-size: 20px; font-weight: 600;
  font-variant-numeric: tabular-nums;
}

/* ---- Breakdown rows ---- */
.breakdown-row { gap: 10px; }
.breakdown-dot {
  width: 12px; height: 12px; border-radius: 50%; flex-shrink: 0;
}
.breakdown-name { flex: 1; font-size: 15px; }
.breakdown-pct {
  font-size: 14px; color: var(--muted); font-weight: 500;
  font-variant-numeric: tabular-nums; min-width: 44px; text-align: right;
}
.breakdown-dur {
  font-family: var(--mono); font-size: 14px; color: var(--muted);
  font-variant-numeric: tabular-nums; min-width: 56px; text-align: right;
}

/* ---- Summary rows ---- */
.row-label { flex: 1; font-size: 15px; }
.row-value { font-size: 15px; color: var(--muted); font-variant-numeric: tabular-nums; }
.row-value a { color: var(--accent); text-decoration: none; }

/* ---- Empty list ---- */
.ios-list .empty-row {
  padding: 24px 16px; text-align: center;
  color: var(--muted); font-size: 14px;
}

/* ---- Add entry form ---- */
.add-entry-form .ios-row { gap: 12px; }
.form-select, .form-input {
  font: inherit; font-size: 15px; color: var(--text);
  background: var(--bg); border: 1px solid var(--sep);
  border-radius: 8px; padding: 8px 10px;
  flex: 1; max-width: 220px; text-align: right;
}
.add-entry-btn {
  background: var(--accent); color: #fff; border: none;
  border-radius: 10px; font: inherit; font-size: 15px; font-weight: 600;
  padding: 10px 24px; cursor: pointer;
}
.add-entry-btn:active { opacity: 0.8; }

/* ---- Responsive ---- */
@media (max-width: 400px) {
  .timer-display { font-size: 48px; }
  .running-time { font-size: 18px; }
}