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

:root {
  --bg: #1a1a2e;
  --surface: #16213e;
  --surface2: #0f3460;
  --accent: #4f8ef7;
  --accent2: #e05c5c;
  --text: #e8eaf0;
  --text2: #9aa3b5;
  --green: #50c878;
  --yellow: #f7a94f;
  --red: #e05c5c;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.4);
}

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
  height: 100vh;
  width: 100vw;
}

/* ===== SCREENS ===== */
.screen { display: none; width: 100vw; height: 100vh; }
.screen.active { display: flex; }

/* ===== LOGIN STEPS ===== */
#login-screen {
  position: relative;
  background: radial-gradient(ellipse at 30% 60%, #0f2a50 0%, #0d0d1a 70%);
}

/* Step containers */
.ls-step {
  display: none;
  width: 100%; height: 100%;
  align-items: center;
  justify-content: center;
}
.ls-step.active { display: flex; }

/* Card */
.ls-card {
  background: rgba(22, 28, 50, 0.9);
  border: 1px solid rgba(255,255,255,0.09);
  border-radius: 20px;
  padding: 48px 52px;
  width: 440px;
  box-shadow: 0 24px 80px rgba(0,0,0,0.6);
  display: flex;
  flex-direction: column;
  gap: 20px;
  backdrop-filter: blur(20px);
  animation: cardIn 0.3s ease;
}
@keyframes cardIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.ls-logo { font-size: 2.8rem; text-align: center; line-height: 1; }
.ls-title { font-size: 1.6rem; font-weight: 700; text-align: center; color: var(--text); }
.ls-sub  { text-align: center; color: var(--text2); font-size: 0.95rem; line-height: 1.5; }
.ls-sub strong { color: var(--text); }

/* Input group */
.ls-input-wrap { display: flex; flex-direction: column; gap: 6px; }
.ls-label { font-size: 0.82rem; font-weight: 600; color: var(--text2); text-transform: uppercase; letter-spacing: 0.05em; }
.ls-input {
  background: rgba(255,255,255,0.06);
  border: 1.5px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  padding: 14px 18px;
  color: var(--text);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s, background 0.2s;
  width: 100%;
}
.ls-input:focus { border-color: var(--accent); background: rgba(79,142,247,0.07); }
.ls-input::placeholder { color: rgba(255,255,255,0.25); }
.ls-hint { font-size: 0.78rem; color: rgba(255,255,255,0.3); margin-top: 2px; }

/* Buttons */
.ls-btn-primary {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 12px;
  padding: 14px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
  width: 100%;
}
.ls-btn-primary:hover   { opacity: 0.88; }
.ls-btn-primary:active  { transform: scale(0.98); }
.ls-btn-primary:disabled { opacity: 0.4; cursor: not-allowed; }

.ls-btn-ghost {
  background: transparent;
  color: var(--text2);
  border: 1.5px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  padding: 12px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.15s;
  width: 100%;
}
.ls-btn-ghost:hover { background: rgba(255,255,255,0.06); color: var(--text); }

/* Back button */
.ls-back {
  background: none; border: none;
  color: var(--text2); font-size: 0.88rem;
  cursor: pointer; padding: 0;
  display: flex; align-items: center; gap: 4px;
  width: fit-content;
}
.ls-back:hover { color: var(--text); }

/* OTP inputs */
.otp-inputs { display: flex; gap: 10px; justify-content: center; }
.otp-digit {
  width: 52px; height: 60px;
  text-align: center;
  font-size: 1.8rem; font-weight: 700;
  background: rgba(255,255,255,0.06);
  border: 2px solid rgba(255,255,255,0.12);
  border-radius: 12px;
  color: var(--text);
  outline: none;
  transition: border-color 0.15s, background 0.15s;
  caret-color: transparent;
}
.otp-digit:focus { border-color: var(--accent); background: rgba(79,142,247,0.1); }
.otp-digit.filled { border-color: rgba(80,200,120,0.6); background: rgba(80,200,120,0.07); }

/* Color swatches */
.ls-colors { display: flex; gap: 10px; flex-wrap: wrap; }

/* Error */
.ls-error {
  background: rgba(224,92,92,0.12);
  border: 1px solid rgba(224,92,92,0.3);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 0.88rem;
  color: #f4a0a0;
  text-align: center;
}
.ls-error.hidden { display: none; }

/* Spinner overlay */
.ls-spinner-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex; align-items: center; justify-content: center;
  z-index: 999;
  backdrop-filter: blur(4px);
}
.ls-spinner-overlay.hidden { display: none; }
.ls-spinner-box {
  display: flex; flex-direction: column;
  align-items: center; gap: 16px;
  color: var(--text);
}
.ls-spinner-ring {
  width: 44px; height: 44px;
  border: 3px solid rgba(255,255,255,0.15);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Color picker */
.color-picker { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.color-picker span { color: var(--text2); font-size: 0.85rem; }
.colors { display: flex; gap: 8px; }
.color-opt {
  width: 28px; height: 28px; border-radius: 50%;
  cursor: pointer; border: 3px solid transparent;
  transition: border-color 0.15s, transform 0.15s;
}
.color-opt:hover { transform: scale(1.15); }
.color-opt.selected { border-color: white; }

/* ===== OFFICE PICKER ===== */
#office-picker {
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at 40% 60%, #0f3460 0%, #1a1a2e 70%);
}
.picker-box {
  background: var(--surface);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  padding: 32px 40px;
  width: 760px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.picker-box h2 { font-size: 1.3rem; }
.picker-box p { color: var(--text2); font-size: 0.9rem; }
#office-grid {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 6px;
  margin-top: 8px;
}
.office-cell {
  aspect-ratio: 1;
  border-radius: 6px;
  border: 2px solid rgba(255,255,255,0.1);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 0.55rem;
  color: var(--text2);
  transition: all 0.15s;
  padding: 2px;
  text-align: center;
  background: rgba(255,255,255,0.03);
  overflow: hidden;
}
.office-cell.available:hover { border-color: var(--accent); background: rgba(79,142,247,0.15); cursor: pointer; }
.office-cell.available.selected { border-color: var(--accent); background: rgba(79,142,247,0.25); color: var(--text); }
.office-cell.mine { border-color: rgba(247,169,79,0.95); background: rgba(247,169,79,0.16); color: var(--text); }
.office-cell.mine .office-num { color: #ffd28c; }
.office-cell.occupied { background: rgba(255,255,255,0.04); border-color: rgba(255,255,255,0.05); cursor: not-allowed; opacity: 0.5; }
.office-cell.mine.occupied { opacity: 1; border-color: rgba(247,169,79,0.95); background: rgba(247,169,79,0.2); cursor: default; }
.office-num { font-size: 0.7rem; font-weight: 700; color: var(--text2); }
.office-name { font-size: 0.5rem; word-break: break-word; }

/* ===== BUTTONS ===== */
.btn-primary {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 12px 24px;
  font-size: 1rem;
  cursor: pointer;
  font-weight: 600;
  transition: opacity 0.2s, transform 0.1s;
}
.btn-primary:hover { opacity: 0.9; }
.btn-primary:active { transform: scale(0.97); }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-primary.small { padding: 7px 16px; font-size: 0.85rem; }

.btn-ghost {
  background: transparent;
  color: var(--text2);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 8px;
  padding: 12px 24px;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s;
}
.btn-ghost:hover { background: rgba(255,255,255,0.07); color: var(--text); }
.btn-ghost.small { padding: 7px 14px; font-size: 0.85rem; }

/* ===== OFFICE SCREEN ===== */
#office-screen {
  position: relative;
  overflow: hidden;
}

#world-canvas {
  display: block;
  background: #1e1e3a;
  cursor: default;
}

/* ===== MINIMAP ===== */
#minimap-canvas {
  position: fixed;
  top: 64px;
  left: 16px;
  width: 280px;
  height: 200px;
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: 10px;
  background: rgba(10,15,32,0.92);
  z-index: 50;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

/* ===== HUD TOP BAR ===== */
#hud-topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 52px;
  background: rgba(22,33,62,0.95);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 16px;
  z-index: 100;
  backdrop-filter: blur(8px);
}
#hud-logo { font-weight: 700; font-size: 1rem; white-space: nowrap; }
#hud-zone-label {
  background: rgba(79,142,247,0.2);
  color: var(--accent);
  border-radius: 6px;
  padding: 3px 12px;
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
}
#hud-controls { margin-left: auto; display: flex; gap: 8px; align-items: center; }
.hud-btn {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.hud-btn:hover { background: rgba(255,255,255,0.13); }
.hud-btn.active { background: rgba(79,142,247,0.25); border-color: var(--accent); color: var(--accent); }
.hud-btn.danger:hover { background: rgba(224,92,92,0.2); border-color: var(--red); color: var(--red); }

/* ===== MODAL ===== */
.modal {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 300;
  backdrop-filter: blur(4px);
}
.modal.hidden { display: none; }
.modal-box {
  background: var(--surface);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 32px 36px;
  width: 460px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.modal-box h3 { font-size: 1.2rem; }
.guide-copy { display: flex; flex-direction: column; gap: 10px; text-align: left; }
.guide-copy p { margin: 0; color: var(--text2); line-height: 1.5; }
.guide-copy strong { color: var(--text); }
.modal-box input {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  padding: 11px 14px;
  color: var(--text);
  font-size: 0.95rem;
  outline: none;
}
.modal-box input:focus { border-color: var(--accent); }
.modal-actions { display: flex; gap: 10px; }

/* ===== TO-DO MODAL ===== */
#todo-list { display: flex; flex-direction: column; gap: 6px; max-height: 320px; overflow-y: auto; }
.todo-item {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 10px;
  background: rgba(255,255,255,0.05);
  border-radius: 8px;
  border-left: 3px solid transparent;
}
.todo-item.priority-high { border-left-color: #e05c5c; }
.priority-icon { font-size: 0.85rem; flex-shrink: 0; }
.todo-meta { font-size: 0.68rem; color: var(--text2); white-space: nowrap; }
.priority-picker { display: flex; gap: 2px; align-items: center; }
.priority-opt {
  background: none; border: 1px solid transparent; border-radius: 5px;
  cursor: pointer; font-size: 1rem; padding: 2px 5px; line-height: 1;
  opacity: 0.45; transition: opacity 0.15s, border-color 0.15s;
}
.priority-opt.selected { opacity: 1; border-color: rgba(255,255,255,0.3); }
.priority-opt:hover { opacity: 0.85; }
.todo-item input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--accent); cursor: pointer; flex-shrink: 0; }
.todo-item label { flex: 1; font-size: 0.9rem; cursor: pointer; }
.todo-item label.done { text-decoration: line-through; color: var(--text2); }
.todo-item .del-btn { background: none; border: none; color: var(--text2); cursor: pointer; font-size: 0.9rem; }
.todo-item .del-btn:hover { color: var(--red); }
.todo-add-row { display: flex; gap: 6px; margin-top: 4px; align-items: center; }
.todo-add-row input {
  flex: 1;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  padding: 9px 12px;
  color: var(--text);
  font-size: 0.9rem;
  outline: none;
}
.todo-add-row input:focus { border-color: var(--accent); }

/* ===== NOTIFICATION (bell) ===== */
.notification {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius);
  padding: 16px 24px;
  box-shadow: var(--shadow);
  z-index: 200;
  min-width: 320px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.notification.hidden { display: none; }
.notification-actions { display: flex; gap: 10px; justify-content: center; }
#game-challenge-notif { bottom: 160px; border-color: rgba(79,142,247,0.4); }

/* ===== KNOCK POPUP ===== */
#knock-popup {
  position: fixed;
  background: var(--surface);
  border: 1px solid rgba(79,142,247,0.5);
  border-radius: 10px;
  padding: 10px 16px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
  z-index: 190;
  pointer-events: all;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  min-width: 170px;
  text-align: center;
  animation: knockPopupIn 0.18s ease;
  transform-origin: bottom center;
}
#knock-popup.hidden { display: none; }
@keyframes knockPopupIn {
  from { opacity: 0; transform: translateY(8px) scale(0.95); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
#knock-popup::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 7px solid transparent;
  border-top-color: rgba(79,142,247,0.5);
}
#knock-popup-name {
  font-size: 0.8rem;
  color: var(--text2);
  font-weight: 600;
}
#knock-popup-actions { display: flex; align-items: center; gap: 8px; }
#knock-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 7px;
  padding: 6px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
#knock-btn:hover { background: #3a7de8; }
#knock-btn:disabled { background: var(--text2); cursor: default; opacity: 0.6; }
#knock-popup-busy { font-size: 0.75rem; color: #e05c5c; }

/* ===== TOAST ===== */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 500;
}
.toast {
  background: var(--surface2);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  padding: 12px 18px;
  font-size: 0.9rem;
  animation: slideIn 0.25s ease;
  max-width: 320px;
}
.toast.success { border-left: 3px solid var(--green); }
.toast.error { border-left: 3px solid var(--red); }
.toast.info { border-left: 3px solid var(--accent); }
.toast.reminder {
  border-left: 3px solid #f7a94f;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.toast-action-btn, .toast-snooze-btn {
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 0.78rem;
  padding: 4px 10px;
  font-weight: 600;
}
.toast-action-btn { background: #f7a94f; color: #1a1a2e; }
.toast-action-btn:hover { background: #ffb94f; }
.toast-snooze-btn { background: rgba(255,255,255,0.1); color: var(--text2); margin-left: 6px; }
.toast-snooze-btn:hover { background: rgba(255,255,255,0.18); }
@keyframes slideIn {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 3px; }