@import url('https://fonts.googleapis.com/css2?family=Black+Han+Sans&family=Space+Mono:wght@400;700&display=swap');

/* ── THEME VARIABLES ─────────────────────────────────── */
:root {
  --bg:          #000;
  --surface:     #111;
  --border:      #9d00ff;
  --text:        #fff;
  --muted:       #888;
  --t-task:      #39ff14;
  --t-bill:      #ffff00;
  --t-event:     #00ffff;
  --t-doctor:    #ff00ff;
  --t-holiday:   #ff6600;
  --t-self:      #cc00ff;
  --t-birthday:  #ff3399;
  --t-sub:       #00ff99;
}

body.theme-primary {
  --bg:          #f5f5f5;
  --surface:     #fff;
  --border:      #1976d2;
  --text:        #111;
  --muted:       #666;
  --t-task:      #2e7d32;
  --t-bill:      #b71c1c;
  --t-event:     #0d47a1;
  --t-doctor:    #ad1457;
  --t-holiday:   #e65100;
  --t-self:      #4a148c;
  --t-birthday:  #880e4f;
  --t-sub:       #00695c;
}

body.theme-bank {
  --bg:          #1c1008;
  --surface:     #2a1a0c;
  --border:      #7a5c2e;
  --text:        #f0e6d0;
  --muted:       #a08060;
  --t-task:      #8d99ae;
  --t-bill:      #c9a84c;
  --t-event:     #7ea8a0;
  --t-doctor:    #b07878;
  --t-holiday:   #c07840;
  --t-self:      #7a6a9a;
  --t-birthday:  #a07080;
  --t-sub:       #6a9a7a;
}

/* ── RESET ───────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Space Mono', monospace;
  min-height: 100vh;
  padding-bottom: 200px;
  transition: background 0.4s, color 0.4s;
  overflow-x: hidden;
}

/* ── THEME BAR ───────────────────────────────────────── */
.theme-bar {
  display: flex;
  justify-content: center;
  gap: 10px;
  padding: 12px;
  background: rgba(0,0,0,0.3);
}

.t-btn {
  padding: 8px 18px;
  border: none;
  border-radius: 20px;
  font-family: 'Black Han Sans', sans-serif;
  font-size: 0.75rem;
  cursor: pointer;
  letter-spacing: 1px;
  transition: transform 0.15s;
}

.t-btn:active { transform: scale(0.95); }
.neon-btn    { background: #ff00ff; color: #fff; }
.primary-btn { background: #1976d2; color: #fff; }
.bank-btn    { background: #5d3a1a; color: #c9a84c; }

/* ── HEADER ──────────────────────────────────────────── */
.header-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 16px 20px 8px;
}

.sparkle-text {
  font-family: 'Black Han Sans', sans-serif;
  font-size: clamp(1.6rem, 5vw, 3rem);
  letter-spacing: 4px;
  text-align: center;
  color: var(--text);
}

/* Neon theme only: animated rainbow gradient */
body.theme-neon .sparkle-text {
  background: linear-gradient(90deg, #ff00ff, #00ffff, #39ff14, #ff9900, #ff00ff);
  background-size: 300% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: rainbow 3s linear infinite;
  filter: drop-shadow(0 0 12px rgba(255,0,255,0.6));
}

@keyframes rainbow {
  0%   { background-position: 0% center; }
  100% { background-position: 300% center; }
}

.nav-arrow {
  background: transparent;
  border: 2px solid var(--border);
  color: var(--text);
  font-size: 1.1rem;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-arrow:hover { background: var(--border); }

/* ── WEEKDAY ROW ─────────────────────────────────────── */
.weekday-row {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  text-align: center;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--border);
  padding: 6px 12px 4px;
}

/* ── CALENDAR GRID ───────────────────────────────────── */
.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
  padding: 0 12px;
}

.day-cell {
  min-height: 110px;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 10px;
  padding: 5px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s;
}

.day-cell.empty {
  border: none;
  background: transparent;
  pointer-events: none;
}

.day-cell.today {
  border-color: #00ffff;
  box-shadow: 0 0 8px rgba(0,255,255,0.3);
}

/* Diagonal "Day Done" slash */
.day-cell.done::after {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 141%;
  height: 4px;
  background: linear-gradient(90deg, #ff00ff, #00ffff);
  transform: rotate(45deg);
  transform-origin: top left;
  z-index: 10;
  pointer-events: none;
}

.day-num {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--muted);
  margin-bottom: 3px;
  display: block;
}

.day-cell.today .day-num { color: #00ffff; }

/* ── TASK PILLS ──────────────────────────────────────── */
.task-pill {
  font-size: 0.6rem;
  font-weight: 700;
  padding: 4px 6px;
  border-radius: 5px;
  margin-top: 3px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 3px;
  cursor: pointer;
  color: #000;
  line-height: 1.3;
  transition: opacity 0.2s;
  word-break: break-word;
}

.task-pill.done-task {
  text-decoration: line-through;
  opacity: 0.3;
  filter: grayscale(1);
}

.pill-text { flex: 1; }

.pill-actions { display: flex; gap: 3px; flex-shrink: 0; }

.pill-btn {
  border: none;
  border-radius: 3px;
  cursor: pointer;
  font-size: 0.65rem;
  padding: 2px 4px;
  background: rgba(0,0,0,0.2);
  color: #fff;
  line-height: 1;
}

.pill-btn:hover { background: rgba(0,0,0,0.4); }

/* Category colors */
.type-task     { background: var(--t-task); }
.type-bill     { background: var(--t-bill); }
.type-event    { background: var(--t-event); }
.type-doctor   { background: var(--t-doctor); color: #fff; }
.type-holiday  { background: var(--t-holiday); }
.type-self     { background: var(--t-self); color: #fff; }
.type-birthday { background: var(--t-birthday); color: #fff; }
.type-sub      { background: var(--t-sub); }

/* ── CALCULATOR ──────────────────────────────────────── */
.calc-toggle {
  position: fixed;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--border);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 46px;
  height: 46px;
  font-size: 1.2rem;
  cursor: pointer;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
}

.calc-sidebar {
  position: fixed;
  right: -280px;
  top: 0;
  width: 260px;
  height: 100vh;
  background: var(--surface);
  border-left: 3px solid var(--border);
  padding: 20px 16px;
  z-index: 300;
  transition: right 0.3s ease;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.calc-sidebar.open { right: 0; }

.calc-title {
  font-family: 'Black Han Sans', sans-serif;
  color: var(--border);
  font-size: 1.2rem;
  letter-spacing: 3px;
  text-align: center;
}

.calc-display {
  background: #000;
  color: #39ff14;
  font-family: 'Space Mono', monospace;
  font-size: 1.4rem;
  padding: 12px;
  border-radius: 8px;
  text-align: right;
  min-height: 50px;
  word-break: break-all;
  border: 1px solid var(--border);
}

.calc-keys {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.calc-keys button {
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 0;
  font-family: 'Space Mono', monospace;
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s;
}

.calc-keys button:hover { background: var(--border); color: #fff; }
.calc-keys button.op { color: var(--border); }
.calc-keys button.clear-btn { grid-column: span 2; background: #330000; color: #ff4444; border-color: #ff4444; }
.calc-keys button.close-btn { grid-column: span 2; background: var(--border); color: #fff; }

/* ── INPUT PANEL ─────────────────────────────────────── */
.input-panel {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: var(--surface);
  border-top: 4px solid var(--border);
  padding: 14px 16px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  z-index: 100;
}

.ai-status {
  font-size: 0.6rem;
  color: #39ff14;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

body.theme-primary .ai-status { color: var(--t-task); }
body.theme-bank    .ai-status { color: var(--t-bill); }

.input-row {
  display: flex;
  gap: 10px;
  width: 100%;
  max-width: 600px;
}

.input-row select {
  flex: 1;
  padding: 10px;
  border-radius: 8px;
  border: 2px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-family: 'Space Mono', monospace;
  font-size: 0.8rem;
}

#taskInput {
  width: 100%;
  max-width: 600px;
  padding: 13px 16px;
  border-radius: 10px;
  border: 2px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-family: 'Space Mono', monospace;
  font-size: 0.9rem;
  outline: none;
}

#taskInput:focus { border-color: #00ffff; }
#taskInput::placeholder { color: var(--muted); }

.add-btn {
  width: 100%;
  max-width: 600px;
  padding: 14px;
  border: none;
  border-radius: 10px;
  background: var(--t-task);
  color: #000;
  font-family: 'Black Han Sans', sans-serif;
  font-size: 1rem;
  letter-spacing: 2px;
  cursor: pointer;
  transition: filter 0.15s, transform 0.1s;
}

.add-btn:hover  { filter: brightness(1.1); }
.add-btn:active { transform: scale(0.98); }

/* ── RESPONSIVE ──────────────────────────────────────── */
@media (max-width: 600px) {
  .day-cell { min-height: 70px; }
  .sparkle-text { font-size: 1.4rem; }
  .weekday-row { font-size: 0.55rem; }
}