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

:root {
  --bg-deep:        #030a12;
  --bg-panel:       #071220;
  --bg-card:        #0a1929;
  --bg-card-hover:  #0f2240;
  --border:         #1a3a5c;
  --border-bright:  #1e5080;
  --text-primary:   #c8e8ff;
  --text-secondary: #5a8ab0;
  --text-dim:       #2d5070;
  --accent:         #00d4ff;
  --accent-glow:    rgba(0,212,255,0.25);
  --common:         #8eb4d4;
  --common-bg:      rgba(142,180,212,0.1);
  --rare:           #4d9fff;
  --rare-bg:        rgba(77,159,255,0.12);
  --epic:           #c070ff;
  --epic-bg:        rgba(192,112,255,0.12);
  --legendary:      #ffb930;
  --legendary-bg:   rgba(255,185,48,0.12);
  --unlocked-glow:  rgba(0,212,255,0.15);
  --danger:         #ff4060;
  --success:        #00ff9d;
  --font-mono:      'Courier New', monospace;
  --font-ui:        'Trebuchet MS', 'Lucida Grande', sans-serif;
  --radius:         4px;
  --radius-lg:      8px;
  --transition:     0.18s ease;
}

html { scroll-behavior: smooth; }

body {
  background-color: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 13px;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ===== BACKGROUND EFFECTS ===== */
.grid-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9998;
  background: repeating-linear-gradient(
    0deg,
    rgba(0,0,0,0.07) 0px,
    rgba(0,0,0,0.07) 1px,
    transparent 1px,
    transparent 3px
  );
}

/* ===== HUD HEADER ===== */
.hud-header {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 24px;
  background: rgba(3,10,18,0.95);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 30px rgba(0,0,0,0.6), 0 1px 0 rgba(0,212,255,0.1);
}

.hud-logo {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: bold;
  letter-spacing: 4px;
  color: var(--accent);
  text-shadow: 0 0 20px var(--accent-glow), 0 0 40px rgba(0,212,255,0.1);
  white-space: nowrap;
  flex-shrink: 0;
}

.logo-bracket { color: var(--text-secondary); }
.logo-accent { color: #fff; }

.hud-stats {
  display: flex;
  gap: 20px;
  flex: 1;
  justify-content: center;
  flex-wrap: wrap;
}

.stat-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 4px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(0,212,255,0.03);
  min-width: 80px;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 2px;
  color: var(--text-secondary);
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: bold;
  color: var(--accent);
  text-shadow: 0 0 8px var(--accent-glow);
  letter-spacing: 1px;
}

.btn-settings {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 18px;
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
}
.btn-settings:hover { border-color: var(--accent); color: var(--accent); }

/* ===== XP BAR ===== */
.xp-bar-wrap {
  padding: 0 24px;
  background: rgba(3,10,18,0.8);
  border-bottom: 1px solid var(--border);
  position: relative;
  z-index: 50;
}

.xp-bar-track {
  position: relative;
  height: 6px;
  background: rgba(0,212,255,0.06);
  border-radius: 3px;
  overflow: hidden;
}

.xp-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #0066ff, #00d4ff, #00ffcc);
  border-radius: 3px;
  transition: width 0.8s cubic-bezier(0.22,1,0.36,1);
  box-shadow: 0 0 12px rgba(0,212,255,0.6);
  position: relative;
}

.xp-bar-fill::after {
  content: '';
  position: absolute;
  right: 0; top: 0; bottom: 0;
  width: 30px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4));
  animation: shimmer 1.5s ease-in-out infinite;
}

@keyframes shimmer {
  0%, 100% { opacity: 0; }
  50% { opacity: 1; }
}

.xp-bar-label {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 1px;
  color: var(--text-secondary);
  pointer-events: none;
  display: none;
}

/* ===== MAIN LAYOUT ===== */
.main-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: calc(100vh - 90px);
  position: relative;
  z-index: 1;
}

/* ===== SIDEBAR ===== */
.sidebar {
  border-right: 1px solid var(--border);
  background: rgba(7,18,32,0.6);
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: sticky;
  top: 90px;
  height: calc(100vh - 90px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.sidebar-section { display: flex; flex-direction: column; gap: 4px; }

.sidebar-title {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 3px;
  color: var(--text-dim);
  padding: 4px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}

.filter-btn {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  text-align: left;
  padding: 7px 10px;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 11px;
  letter-spacing: 1px;
  transition: var(--transition);
  font-family: var(--font-mono);
  width: 100%;
}

.filter-btn:hover {
  background: rgba(0,212,255,0.05);
  color: var(--text-primary);
  border-color: var(--border);
}

.filter-btn.active,
.filter-btn.active-cat,
.filter-btn.active-status {
  background: rgba(0,212,255,0.1);
  border-color: var(--accent);
  color: var(--accent);
}

.filter-btn.common { color: var(--common); }
.filter-btn.rare    { color: var(--rare); }
.filter-btn.epic    { color: var(--epic); }
.filter-btn.legendary { color: var(--legendary); }

.search-box {
  width: 100%;
  background: rgba(0,212,255,0.04);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 8px 10px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 11px;
  outline: none;
  transition: var(--transition);
}
.search-box:focus { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(0,212,255,0.1); }
.search-box::placeholder { color: var(--text-dim); }

.sidebar-stats {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: rgba(0,0,0,0.2);
}

.mini-stat {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
}

.common-text   { color: var(--common); }
.rare-text     { color: var(--rare); }
.epic-text     { color: var(--epic); }
.legendary-text{ color: var(--legendary); }

/* ===== ACHIEVEMENT AREA ===== */
.achievement-area {
  padding: 20px 24px;
  overflow-y: auto;
}

.area-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.area-title {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 3px;
  color: var(--text-secondary);
}

.sort-wrap { display: flex; align-items: center; gap: 8px; }

.sort-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--text-dim);
}

.sort-select {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 5px 10px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 11px;
  cursor: pointer;
  outline: none;
}
.sort-select:focus { border-color: var(--accent); }

/* ===== ACHIEVEMENT GRID ===== */
.achievement-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
}

/* ===== ACHIEVEMENT CARD ===== */
.achievement-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px 16px;
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
  position: relative;
  overflow: hidden;
  display: flex;
  gap: 14px;
  align-items: flex-start;
  user-select: none;
}

.achievement-card::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

.achievement-card:hover {
  transform: translateY(-2px);
  background: var(--bg-card-hover);
  border-color: var(--border-bright);
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

/* Rarity border left accent */
.achievement-card::after {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  border-radius: 8px 0 0 8px;
  transition: opacity 0.2s ease;
}

.achievement-card[data-rarity="common"]::after   { background: var(--common); }
.achievement-card[data-rarity="rare"]::after     { background: var(--rare); }
.achievement-card[data-rarity="epic"]::after     { background: var(--epic); }
.achievement-card[data-rarity="legendary"]::after { background: var(--legendary); }

/* Unlocked state */
.achievement-card.unlocked {
  background: rgba(0,212,255,0.04);
}
.achievement-card.unlocked[data-rarity="common"]  { background: var(--common-bg); border-color: rgba(142,180,212,0.3); }
.achievement-card.unlocked[data-rarity="rare"]    { background: var(--rare-bg); border-color: rgba(77,159,255,0.3); }
.achievement-card.unlocked[data-rarity="epic"]    { background: var(--epic-bg); border-color: rgba(192,112,255,0.3); }
.achievement-card.unlocked[data-rarity="legendary"]{ background: var(--legendary-bg); border-color: rgba(255,185,48,0.4); box-shadow: 0 0 20px rgba(255,185,48,0.08); }

.achievement-card.unlocked:hover[data-rarity="legendary"] {
  box-shadow: 0 4px 30px rgba(255,185,48,0.2);
}

/* Icon area */
.card-icon {
  font-size: 28px;
  line-height: 1;
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  background: rgba(0,0,0,0.3);
  border: 1px solid rgba(255,255,255,0.05);
  filter: grayscale(0.6);
  transition: filter 0.2s ease;
  position: relative;
  z-index: 1;
}

.achievement-card.unlocked .card-icon { filter: grayscale(0) drop-shadow(0 0 6px rgba(0,212,255,0.3)); }
.achievement-card.unlocked[data-rarity="legendary"] .card-icon { filter: grayscale(0) drop-shadow(0 0 10px rgba(255,185,48,0.5)); }

/* Card body */
.card-body {
  flex: 1;
  min-width: 0;
  position: relative;
  z-index: 1;
}

.card-name {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: bold;
  letter-spacing: 1px;
  color: var(--text-primary);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color 0.2s;
}

.achievement-card.unlocked .card-name { color: #fff; }

.card-desc {
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 8px;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.card-rarity {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 2px;
  padding: 2px 7px;
  border-radius: 2px;
  text-transform: uppercase;
}

.card-rarity.common    { color: var(--common); background: rgba(142,180,212,0.12); border: 1px solid rgba(142,180,212,0.25); }
.card-rarity.rare      { color: var(--rare);   background: rgba(77,159,255,0.12);  border: 1px solid rgba(77,159,255,0.25); }
.card-rarity.epic      { color: var(--epic);   background: rgba(192,112,255,0.12); border: 1px solid rgba(192,112,255,0.25); }
.card-rarity.legendary { color: var(--legendary); background: rgba(255,185,48,0.12); border: 1px solid rgba(255,185,48,0.3); }

.card-xp {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-dim);
}

.achievement-card.unlocked .card-xp { color: var(--accent); }

.card-status {
  position: absolute;
  top: 12px;
  right: 14px;
  font-size: 14px;
  z-index: 2;
}

/* Lock overlay */
.achievement-card:not(.unlocked) .card-icon { opacity: 0.5; }
.achievement-card:not(.unlocked) .card-name { color: var(--text-secondary); }

/* Date unlocked */
.card-date {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-dim);
  margin-top: 4px;
}

/* Unlock flash animation */
@keyframes unlock-flash {
  0%   { box-shadow: 0 0 0 0 rgba(0,212,255,0.8); }
  40%  { box-shadow: 0 0 0 12px rgba(0,212,255,0); }
  100% { box-shadow: 0 0 0 0 rgba(0,212,255,0); }
}

.achievement-card.just-unlocked {
  animation: unlock-flash 0.6s ease-out;
}

.achievement-card.unlocked[data-rarity="legendary"].just-unlocked {
  animation: legendary-flash 0.8s ease-out;
}

@keyframes legendary-flash {
  0%   { box-shadow: 0 0 0 0 rgba(255,185,48,0.8); }
  40%  { box-shadow: 0 0 0 20px rgba(255,185,48,0); }
  100% { box-shadow: 0 0 0 0 rgba(255,185,48,0); }
}

/* ===== TOAST ===== */
.toast {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 9999;
  width: 340px;
  background: rgba(7,18,32,0.97);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-lg);
  padding: 16px 18px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.7), 0 0 30px rgba(0,212,255,0.1);
  backdrop-filter: blur(20px);
  transform: translateX(120%);
  transition: transform 0.4s cubic-bezier(0.16,1,0.3,1);
  overflow: hidden;
}

.toast.show { transform: translateX(0); }

.toast-icon {
  font-size: 30px;
  flex-shrink: 0;
  filter: drop-shadow(0 0 8px rgba(255,185,48,0.5));
}

.toast-body { flex: 1; min-width: 0; }

.toast-label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 3px;
  color: var(--text-secondary);
  margin-bottom: 3px;
}

.toast-title {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: bold;
  color: #fff;
  letter-spacing: 1px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.toast-xp {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  margin-top: 2px;
}

.toast-rarity-bar {
  position: absolute;
  bottom: 0; left: 0;
  height: 3px;
  width: 100%;
  transform-origin: left;
  animation: none;
}

.toast-rarity-bar.shrink {
  animation: shrink-bar 3s linear forwards;
}

@keyframes shrink-bar {
  from { transform: scaleX(1); }
  to   { transform: scaleX(0); }
}

.toast-rarity-bar.common    { background: var(--common); }
.toast-rarity-bar.rare      { background: var(--rare); }
.toast-rarity-bar.epic      { background: var(--epic); box-shadow: 0 0 8px var(--epic); }
.toast-rarity-bar.legendary { background: linear-gradient(90deg, var(--legendary), #fff, var(--legendary)); box-shadow: 0 0 12px var(--legendary); }

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.8);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: var(--bg-panel);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-lg);
  padding: 30px;
  width: 380px;
  max-width: 95vw;
  box-shadow: 0 20px 60px rgba(0,0,0,0.8), 0 0 40px rgba(0,212,255,0.05);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal-title {
  font-family: var(--font-mono);
  font-size: 16px;
  letter-spacing: 4px;
  color: var(--accent);
  text-shadow: 0 0 12px var(--accent-glow);
}

.modal-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  color: var(--text-secondary);
  margin-bottom: -8px;
}

.modal-input {
  background: rgba(0,212,255,0.04);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 10px 14px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 14px;
  outline: none;
  width: 100%;
  transition: var(--transition);
}
.modal-input:focus { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(0,212,255,0.12); }

.modal-actions { display: flex; flex-direction: column; gap: 8px; }

.btn-primary {
  background: rgba(0,212,255,0.15);
  border: 1px solid var(--accent);
  color: var(--accent);
  padding: 10px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 2px;
  cursor: pointer;
  transition: var(--transition);
}
.btn-primary:hover { background: rgba(0,212,255,0.25); }

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 10px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 2px;
  cursor: pointer;
  transition: var(--transition);
}
.btn-secondary:hover { border-color: var(--text-secondary); color: var(--text-primary); }

.btn-danger {
  background: rgba(255,64,96,0.1);
  border: 1px solid rgba(255,64,96,0.4);
  color: var(--danger);
  padding: 10px;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 2px;
  cursor: pointer;
  transition: var(--transition);
}
.btn-danger:hover { background: rgba(255,64,96,0.2); }

/* ===== LEVEL UP BANNER ===== */
.levelup-banner {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.5);
  z-index: 9999;
  pointer-events: none;
  text-align: center;
  opacity: 0;
  transition: none;
}

.levelup-banner.show {
  animation: levelup-anim 2.5s cubic-bezier(0.16,1,0.3,1) forwards;
}

@keyframes levelup-anim {
  0%   { opacity: 0; transform: translate(-50%,-50%) scale(0.4); }
  15%  { opacity: 1; transform: translate(-50%,-50%) scale(1.08); }
  25%  { transform: translate(-50%,-50%) scale(1); }
  70%  { opacity: 1; }
  100% { opacity: 0; transform: translate(-50%,-50%) scale(1); }
}

.levelup-text {
  font-family: var(--font-mono);
  font-size: clamp(32px,5vw,60px);
  font-weight: 900;
  letter-spacing: 8px;
  color: var(--accent);
  text-shadow: 0 0 30px var(--accent), 0 0 60px var(--accent-glow), 0 0 100px rgba(0,212,255,0.3);
}

.levelup-sub {
  font-family: var(--font-mono);
  font-size: 18px;
  letter-spacing: 4px;
  color: var(--text-secondary);
  margin-top: 8px;
  text-shadow: 0 0 12px rgba(0,212,255,0.3);
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-bright); }

/* ===== EMPTY STATE ===== */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  font-family: var(--font-mono);
  color: var(--text-dim);
  letter-spacing: 2px;
  font-size: 13px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .main-layout { grid-template-columns: 1fr; }
  .sidebar {
    position: relative;
    top: 0;
    height: auto;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 12px;
    overflow-x: auto;
    padding: 12px 16px;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .sidebar-section { min-width: 160px; }
  .sidebar-stats { display: none; }
  .hud-stats { gap: 8px; }
  .stat-block { min-width: 60px; padding: 4px 8px; }
}

@media (max-width: 600px) {
  .hud-header { padding: 8px 12px; gap: 8px; }
  .achievement-area { padding: 12px; }
  .achievement-grid { grid-template-columns: 1fr; }
  .toast { width: calc(100vw - 40px); right: 20px; bottom: 20px; }
  .hud-logo { font-size: 14px; letter-spacing: 2px; }
}