* { margin: 0; padding: 0; box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

:root {
  --bg: #0a0a0f;
  --bg-card: #0d0d15;
  --bg-card-hover: #12121f;
  --border: #1a1a2e;
  --border-active: #00d4ff;
  --primary: #00d4ff;
  --primary-dim: #0088aa;
  --accent: #7b2ff7;
  --gold: #ffd700;
  --streak: #ff6b35;
  --easy: #00ff88;
  --medium: #ffd700;
  --hard: #ff3366;
  --text: #e0e0e0;
  --text-dim: #555570;
  --text-bright: #ffffff;
  --danger: #ff3366;
  --success: #00ff88;
}

html, body {
  height: 100%;
  overflow: hidden;
  overscroll-behavior: none;
}

body {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  background: var(--bg);
  color: var(--text);
  position: relative;
  -webkit-overflow-scrolling: touch;
}

#scanline {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 212, 255, 0.015) 2px,
    rgba(0, 212, 255, 0.015) 4px
  );
}

#app {
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* HEADER */
#header {
  background: linear-gradient(180deg, #0d0d18 0%, var(--bg) 100%);
  padding: 12px 15px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.system-label {
  font-size: 0.6em;
  color: var(--primary-dim);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

#player-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.player-name {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.1em;
  font-weight: 700;
  color: var(--text-bright);
  letter-spacing: 1px;
}

.player-rank {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.85em;
  font-weight: 600;
  color: var(--primary);
  padding: 3px 10px;
  border: 1px solid var(--primary-dim);
  letter-spacing: 2px;
}

#stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 8px;
}

.stat-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 8px 6px;
  text-align: center;
}

.stat-label {
  font-size: 0.55em;
  color: var(--text-dim);
  letter-spacing: 2px;
  margin-bottom: 4px;
}

.stat-value {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.95em;
  font-weight: 600;
  color: var(--text-bright);
}

.stat-value.streak { color: var(--streak); }
.stat-value.coins { color: var(--gold); }
.stat-sep { color: var(--text-dim); font-size: 0.8em; }

#xp-bar-container {
  height: 3px;
  background: var(--border);
  overflow: hidden;
}

#xp-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transition: width 0.5s ease;
  box-shadow: 0 0 10px var(--primary);
}

/* MAIN - scrollable area */
#main {
  flex: 1;
  overflow: hidden;
  position: relative;
  min-height: 0;
}

/* TABS */
.tab { 
  display: none; 
  height: 100%;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 15px;
  padding-bottom: 80px;
}
.tab.active { display: block; }
.tab::-webkit-scrollbar { width: 0; }

/* SECTION HEADER */
.section-header {
  margin-bottom: 15px;
}

.section-header h2 {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.85em;
  font-weight: 600;
  color: var(--primary);
  letter-spacing: 3px;
  margin-bottom: 6px;
}

.section-line {
  height: 1px;
  background: linear-gradient(90deg, var(--primary-dim), transparent);
}

/* TASK CARDS */
.task-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 14px;
  margin-bottom: 8px;
  position: relative;
  transition: all 0.2s;
}

.task-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
}

.task-card.easy::before { background: var(--easy); box-shadow: 0 0 8px var(--easy); }
.task-card.medium::before { background: var(--medium); box-shadow: 0 0 8px var(--medium); }
.task-card.hard::before { background: var(--hard); box-shadow: 0 0 8px var(--hard); }

.task-card.completed {
  opacity: 0.3;
  border-color: transparent;
}

.task-card.completed::before { background: var(--text-dim); box-shadow: none; }

.task-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 8px;
}

.task-difficulty {
  font-size: 0.55em;
  letter-spacing: 2px;
  padding: 2px 6px;
  border: 1px solid;
  flex-shrink: 0;
}

.task-difficulty.easy { color: var(--easy); border-color: var(--easy); }
.task-difficulty.medium { color: var(--medium); border-color: var(--medium); }
.task-difficulty.hard { color: var(--hard); border-color: var(--hard); }

.task-text {
  font-size: 0.85em;
  color: var(--text);
  line-height: 1.4;
  flex: 1;
  margin-left: 10px;
}

.task-rewards {
  display: flex;
  gap: 12px;
  font-size: 0.7em;
  color: var(--text-dim);
  margin-top: 8px;
}

.task-rewards .xp { color: var(--primary); }

.task-btn {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary-dim);
  padding: 8px 14px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7em;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all 0.2s;
  margin-top: 10px;
  width: 100%;
}

.task-btn:active {
  background: var(--primary);
  color: var(--bg);
  box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
}

.task-btn:disabled {
  border-color: var(--text-dim);
  color: var(--text-dim);
  cursor: not-allowed;
  background: transparent;
  box-shadow: none;
}

/* PROFILE */
#profile-content {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.profile-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 14px;
}

.profile-section h3 {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.7em;
  color: var(--primary);
  letter-spacing: 2px;
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

.profile-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  font-size: 0.8em;
}

.profile-row .label { color: var(--text-dim); }
.profile-row .value { color: var(--text-bright); font-family: 'Orbitron', sans-serif; }

.streak-milestones {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.milestone {
  padding: 4px 8px;
  font-size: 0.65em;
  border: 1px solid var(--border);
  color: var(--text-dim);
  letter-spacing: 1px;
}

.milestone.achieved {
  border-color: var(--streak);
  color: var(--streak);
  background: rgba(255, 107, 53, 0.1);
}

/* NAV */
#nav {
  display: flex;
  flex-shrink: 0;
  background: #0a0a12;
  border-top: 1px solid var(--border);
  padding-bottom: env(safe-area-inset-bottom, 0);
}

.nav-btn {
  flex: 1;
  padding: 10px 0 8px;
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  transition: all 0.2s;
  position: relative;
}

.nav-btn.active {
  color: var(--primary);
}

.nav-btn.active::before {
  content: '';
  position: absolute;
  top: 0;
  left: 20%;
  right: 20%;
  height: 1px;
  background: var(--primary);
  box-shadow: 0 0 8px var(--primary);
}

.nav-icon { font-size: 1.2em; }
.nav-label { font-size: 0.55em; letter-spacing: 2px; }

/* MODAL */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  backdrop-filter: blur(5px);
}

.modal.hidden { display: none; }

.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--primary-dim);
  padding: 30px 25px;
  text-align: center;
  max-width: 320px;
  width: 90%;
  position: relative;
}

.modal-glow {
  position: absolute;
  inset: -1px;
  background: linear-gradient(45deg, var(--primary), transparent, var(--accent));
  opacity: 0.3;
  z-index: -1;
}

.system-msg {
  font-size: 0.6em;
  color: var(--primary-dim);
  letter-spacing: 3px;
  margin-bottom: 15px;
}

.modal-content h2 {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.5em;
  color: var(--primary);
  letter-spacing: 4px;
  margin-bottom: 10px;
  text-shadow: 0 0 20px var(--primary);
}

.level-up-rank {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.2em;
  color: var(--gold);
  margin-bottom: 10px;
  letter-spacing: 3px;
}

.modal-content p {
  font-size: 0.8em;
  color: var(--text-dim);
  margin-bottom: 20px;
}

.highlight {
  color: var(--primary);
  font-weight: 600;
}

.btn-primary {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
  padding: 10px 30px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8em;
  letter-spacing: 2px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary:active {
  background: var(--primary);
  color: var(--bg);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
}

/* TOAST */
.toast {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  border: 1px solid var(--primary-dim);
  padding: 10px 20px;
  font-size: 0.75em;
  color: var(--primary);
  letter-spacing: 1px;
  z-index: 300;
  transition: all 0.3s;
  opacity: 0;
}

.toast.show {
  opacity: 1;
  top: 90px;
}

.toast.hidden { display: none; }

/* EMPTY STATE */
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-dim);
  font-size: 0.8em;
  letter-spacing: 1px;
}

.empty-state .icon {
  font-size: 2em;
  margin-bottom: 10px;
  opacity: 0.3;
}

/* ACTIVE EFFECTS */
#active-effects {
  display: flex;
  gap: 8px;
  margin-top: 8px;
  flex-wrap: wrap;
}

.effect-badge {
  font-size: 0.6em;
  padding: 2px 8px;
  border: 1px solid;
  letter-spacing: 1px;
}

.effect-badge.double-xp { color: var(--primary); border-color: var(--primary); background: rgba(0, 212, 255, 0.1); }
.effect-badge.shield { color: var(--success); border-color: var(--success); background: rgba(0, 255, 136, 0.1); }

/* BOSS SECTION */
#boss-section {
  margin-bottom: 15px;
}

.boss-card {
  background: linear-gradient(135deg, #1a0a0a, #0d0d15);
  border: 1px solid var(--hard);
  padding: 16px;
  position: relative;
  overflow: hidden;
}

.boss-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--hard);
  box-shadow: 0 0 15px var(--hard);
}

.boss-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.boss-name {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.9em;
  color: var(--hard);
  letter-spacing: 2px;
}

.boss-label {
  font-size: 0.55em;
  color: var(--hard);
  border: 1px solid var(--hard);
  padding: 2px 6px;
  letter-spacing: 2px;
}

.boss-desc {
  font-size: 0.75em;
  color: var(--text-dim);
  margin-bottom: 12px;
  font-style: italic;
}

.boss-hp-bar {
  height: 8px;
  background: var(--border);
  overflow: hidden;
  margin-bottom: 6px;
}

.boss-hp-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--hard), #ff6644);
  transition: width 0.5s ease;
  box-shadow: 0 0 10px var(--hard);
}

.boss-hp-text {
  font-size: 0.65em;
  color: var(--text-dim);
  text-align: right;
}

.boss-defeated {
  text-align: center;
  padding: 20px;
  color: var(--success);
  font-family: 'Orbitron', sans-serif;
  letter-spacing: 2px;
}

.boss-inactive {
  text-align: center;
  padding: 15px;
  color: var(--text-dim);
  font-size: 0.75em;
  border: 1px dashed var(--border);
}

/* SHOP */
.shop-section-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.7em;
  color: var(--primary);
  letter-spacing: 2px;
  margin: 15px 0 10px;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border);
}

.shop-section-title:first-child { margin-top: 0; }

.shop-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 12px;
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.shop-item.owned {
  opacity: 0.5;
  border-color: var(--success);
}

.shop-item-info {
  flex: 1;
}

.shop-item-name {
  font-size: 0.8em;
  color: var(--text-bright);
  margin-bottom: 4px;
}

.shop-item-name .item-icon {
  margin-right: 6px;
}

.shop-item-desc {
  font-size: 0.65em;
  color: var(--text-dim);
}

.shop-item-price {
  font-size: 0.7em;
  color: var(--gold);
  font-family: 'Orbitron', sans-serif;
}

.shop-btn {
  background: transparent;
  border: 1px solid var(--gold);
  color: var(--gold);
  padding: 6px 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.6em;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all 0.2s;
  margin-left: 10px;
  white-space: nowrap;
}

.shop-btn:active {
  background: var(--gold);
  color: var(--bg);
}

.shop-btn:disabled {
  border-color: var(--text-dim);
  color: var(--text-dim);
  cursor: not-allowed;
}

.shop-btn.use-btn {
  border-color: var(--success);
  color: var(--success);
}

.shop-btn.use-btn:active {
  background: var(--success);
  color: var(--bg);
}

/* STATS */
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 14px;
  margin-bottom: 12px;
}

.stat-card h3 {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.7em;
  color: var(--primary);
  letter-spacing: 2px;
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}

.category-bar {
  margin-bottom: 10px;
}

.category-bar-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.75em;
  margin-bottom: 4px;
}

.category-bar-name {
  color: var(--text-bright);
}

.category-bar-count {
  color: var(--text-dim);
}

.category-bar-track {
  height: 6px;
  background: var(--border);
  overflow: hidden;
}

.category-bar-fill {
  height: 100%;
  transition: width 0.5s ease;
}

.weekly-chart {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 80px;
  margin-top: 10px;
}

.weekly-bar {
  flex: 1;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  min-height: 2px;
  transition: height 0.3s ease;
  position: relative;
}

.weekly-bar-label {
  position: absolute;
  bottom: -16px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.5em;
  color: var(--text-dim);
  white-space: nowrap;
}

.stats-summary {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.summary-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 12px;
  text-align: center;
}

.summary-value {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.2em;
  color: var(--primary);
  margin-bottom: 4px;
}

.summary-label {
  font-size: 0.6em;
  color: var(--text-dim);
  letter-spacing: 1px;
}

/* ACHIEVEMENTS */
.achievement-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 14px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.achievement-card.unlocked {
  border-color: var(--gold);
  background: linear-gradient(135deg, #0d0d15, #1a1500);
}

.achievement-card.locked {
  opacity: 0.4;
}

.achievement-icon {
  font-size: 1.8em;
  flex-shrink: 0;
  width: 40px;
  text-align: center;
}

.achievement-info {
  flex: 1;
}

.achievement-name {
  font-size: 0.8em;
  color: var(--text-bright);
  margin-bottom: 2px;
}

.achievement-desc {
  font-size: 0.65em;
  color: var(--text-dim);
}

.achievement-bonus {
  font-size: 0.6em;
  color: var(--primary);
  margin-top: 4px;
}

.achievement-unlocked-at {
  font-size: 0.55em;
  color: var(--gold);
  margin-top: 2px;
}

/* CLASS MODAL */
.class-modal-content {
  max-width: 400px;
}

.class-choices {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 15px;
}

.class-choice {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 12px;
  cursor: pointer;
  transition: all 0.2s;
  text-align: left;
}

.class-choice:active {
  border-color: var(--primary);
  background: var(--bg-card-hover);
}

.class-choice-name {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.85em;
  color: var(--text-bright);
  margin-bottom: 4px;
}

.class-choice-desc {
  font-size: 0.65em;
  color: var(--text-dim);
}

.class-choice-icon {
  font-size: 1.2em;
  margin-right: 8px;
}

/* CATEGORY BADGE ON TASK */
.task-category {
  font-size: 0.55em;
  padding: 2px 6px;
  border: 1px solid;
  margin-left: 6px;
  flex-shrink: 0;
}