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

:root {
  --col-hp:   #e04040;
  --col-mp:   #4080f0;
  --col-xp:   #f0a020;
  --col-gold: #f0d020;
  --col-bg:   #0a0c10;
  --col-panel:#12161e;
  --col-border:#2a3040;
  --col-text: #d0d8e8;
  --col-accent:#5090ff;
  --font-main: 'Segoe UI', Arial, sans-serif;
}

html, body { width: 100%; height: 100%; overflow: hidden; background: var(--col-bg); color: var(--col-text); font-family: var(--font-main); }

.hidden { display: none !important; }

/* ═══════════════════ AUTH SCREEN ═══════════════════ */
#auth-screen {
  position: fixed; inset: 0;
  background: radial-gradient(ellipse at center, #1a2040 0%, #050810 100%);
  display: flex; align-items: center; justify-content: center;
}

.auth-box {
  background: var(--col-panel);
  border: 1px solid var(--col-border);
  border-radius: 12px;
  padding: 40px 48px;
  min-width: 360px;
  box-shadow: 0 0 60px rgba(80,144,255,.15);
  display: flex; flex-direction: column; gap: 14px;
}

.auth-logo { text-align: center; font-size: 2.6rem; font-weight: 900; letter-spacing: 4px; margin-bottom: 6px; }
.logo-nexus { color: var(--col-accent); }
.logo-rpg   { color: var(--col-gold); }

#auth-tabs { display: flex; gap: 8px; }
.tab-btn {
  flex: 1; padding: 8px; border: 1px solid var(--col-border);
  background: transparent; color: var(--col-text); border-radius: 6px;
  cursor: pointer; transition: all .2s;
}
.tab-btn.active { background: var(--col-accent); border-color: var(--col-accent); color: #fff; }

.tab-panel { display: none; flex-direction: column; gap: 10px; }
.tab-panel.active { display: flex; }

input[type="text"], input[type="password"] {
  width: 100%; padding: 10px 14px;
  background: #0d1120; border: 1px solid var(--col-border);
  border-radius: 6px; color: var(--col-text); font-size: .95rem;
  outline: none; transition: border-color .2s;
}
input[type="text"]:focus, input[type="password"]:focus { border-color: var(--col-accent); }

.btn-primary {
  padding: 11px; background: var(--col-accent); color: #fff;
  border: none; border-radius: 6px; font-size: 1rem; cursor: pointer;
  font-weight: 600; letter-spacing: .5px; transition: opacity .2s;
}
.btn-primary:hover { opacity: .85; }

.error-msg { color: #e05050; font-size: .88rem; min-height: 20px; text-align: center; }

/* ═══════════════════ MAIN MENU ═══════════════════ */
#main-menu {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
}
.menu-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 30% 60%, #1a2040 0%, #050810 100%);
}
.menu-box {
  position: relative; z-index: 1;
  background: rgba(12,16,30,.9); border: 1px solid var(--col-border);
  border-radius: 12px; padding: 40px 48px;
  min-width: 320px; display: flex; flex-direction: column; gap: 12px;
  box-shadow: 0 0 80px rgba(80,144,255,.12);
}
.menu-box.compact { padding: 28px 36px; min-width: 280px; }
.menu-box h2 { text-align: center; font-size: 1.3rem; color: var(--col-accent); margin-bottom: 6px; }

#menu-welcome { text-align: center; color: var(--col-gold); font-size: .9rem; }

.menu-btn {
  padding: 10px 16px; background: rgba(80,144,255,.12);
  border: 1px solid var(--col-accent); color: var(--col-accent);
  border-radius: 6px; cursor: pointer; font-size: .95rem;
  transition: all .15s; text-align: left; width: 100%;
}
.menu-btn:hover { background: rgba(80,144,255,.25); }
.menu-btn-danger { border-color: #e05050; color: #e05050; background: rgba(224,80,80,.08); }
.menu-btn-danger:hover { background: rgba(224,80,80,.2); }

/* ═══════════════════ GAME SCREEN ═══════════════════ */
#game-screen { position: fixed; inset: 0; }
#game-canvas  { display: block; width: 100%; height: 100%; }

/* ═══════════════════ HUD ═══════════════════ */
#hud { position: absolute; inset: 0; pointer-events: none; }

#hud-topleft {
  position: absolute; top: 16px; left: 16px;
  display: flex; gap: 14px; align-items: center;
}
#hud-level {
  background: rgba(80,144,255,.2); border: 1px solid var(--col-accent);
  border-radius: 6px; padding: 4px 10px; font-size: .9rem; color: var(--col-accent); font-weight: 700;
}
#hud-gold { font-size: .9rem; color: var(--col-gold); font-weight: 600; }

#hud-bottomleft {
  position: absolute; bottom: 90px; left: 16px;
  display: flex; flex-direction: column; gap: 6px;
}
.stat-bar-wrap { display: flex; align-items: center; gap: 6px; }
.stat-label { width: 22px; font-size: .78rem; color: #99aabb; font-weight: 600; }
.stat-bar { width: 180px; height: 14px; background: rgba(0,0,0,.5); border-radius: 7px; overflow: hidden; border: 1px solid rgba(255,255,255,.08); }
.hp-fill { height: 100%; background: linear-gradient(90deg, #a02020, var(--col-hp)); border-radius: 7px; transition: width .3s; }
.mp-fill { height: 100%; background: linear-gradient(90deg, #2040a0, var(--col-mp)); border-radius: 7px; transition: width .3s; }
.stat-text { font-size: .75rem; color: #99aabb; width: 70px; }

#hud-bottom {
  position: absolute; bottom: 12px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 6px;
}
#xp-bar-wrap { display: flex; align-items: center; gap: 8px; }
#xp-bar { width: 300px; height: 8px; background: rgba(0,0,0,.5); border-radius: 4px; overflow: hidden; border: 1px solid rgba(255,255,255,.08); }
#xp-fill { height: 100%; background: linear-gradient(90deg, #a06000, var(--col-xp)); border-radius: 4px; transition: width .4s; }
#xp-text { font-size: .75rem; color: var(--col-xp); white-space: nowrap; }

#hotbar { display: flex; gap: 4px; }
.hotslot {
  width: 54px; height: 54px;
  background: rgba(10,12,20,.75); border: 2px solid var(--col-border);
  border-radius: 6px; position: relative; display: flex; align-items: center; justify-content: center;
  font-size: .78rem; color: var(--col-text);
  transition: border-color .15s;
}
.hotslot.active-slot { border-color: var(--col-gold); }
.hotkey { position: absolute; top: 2px; left: 4px; font-size: .65rem; color: #6070a0; }
.hotslot-icon { font-size: 1.4rem; }
.hotslot-qty { position: absolute; bottom: 2px; right: 4px; font-size: .65rem; color: var(--col-gold); }

#minimap-wrap {
  position: absolute; bottom: 16px; right: 16px;
  pointer-events: none;
}
#minimap { border: 2px solid var(--col-border); border-radius: 50%; background: #050810; }
#minimap-label { text-align: center; font-size: .68rem; color: #556; margin-top: 3px; }

#notifications {
  position: absolute; top: 60px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  pointer-events: none;
}
.notification {
  background: rgba(12,16,30,.9); border: 1px solid var(--col-accent);
  border-radius: 20px; padding: 6px 18px; font-size: .88rem; color: #fff;
  animation: notifIn .3s ease, notifOut .4s ease 2.6s forwards;
}
.notification.gold-notif  { border-color: var(--col-gold); color: var(--col-gold); }
.notification.level-notif { border-color: #a0e060; color: #a0e060; font-weight: 700; font-size: 1rem; }
@keyframes notifIn  { from { opacity:0; transform:translateY(-10px); } to { opacity:1; transform:translateY(0); } }
@keyframes notifOut { from { opacity:1; } to { opacity:0; } }

#key-hints {
  position: absolute; bottom: 76px; left: 50%; transform: translateX(-50%);
  font-size: .7rem; color: #3a4555; white-space: nowrap;
}

#quest-tracker {
  position: absolute; top: 16px; right: 16px;
  max-width: 220px;
}
#quest-tracker-title { font-size: .72rem; color: #556; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 4px; }
#quest-tracker-list { display: flex; flex-direction: column; gap: 4px; }
.quest-track-item {
  background: rgba(10,12,20,.75); border-left: 3px solid var(--col-gold);
  padding: 4px 8px; border-radius: 0 4px 4px 0; font-size: .78rem;
}
.quest-track-item .qname { color: var(--col-gold); font-weight: 600; }
.quest-track-item .qprog { color: #8090a0; font-size: .72rem; }

/* ═══════════════════ PLAYER LIST (TAB) ═══════════════════ */
#player-list {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  background: rgba(10,12,20,.92); border: 1px solid var(--col-border);
  border-radius: 10px; min-width: 340px; overflow: hidden;
  pointer-events: auto;
}
#player-list-body { padding: 8px 0; max-height: 400px; overflow-y: auto; }
.player-list-row {
  display: flex; align-items: center; gap: 12px;
  padding: 8px 18px; border-bottom: 1px solid rgba(42,48,64,.4);
}
.player-list-row:last-child { border-bottom: none; }
.pl-name  { flex: 1; font-weight: 600; }
.pl-level { color: var(--col-accent); font-size: .82rem; width: 40px; }
.pl-hp-bar { width: 80px; height: 8px; background: rgba(0,0,0,.4); border-radius: 4px; overflow: hidden; }
.pl-hp-fill { height: 100%; background: var(--col-hp); border-radius: 4px; }

/* ═══════════════════ CHAT ═══════════════════ */
#chat-box {
  position: absolute; bottom: 150px; left: 16px;
  width: 340px; pointer-events: auto;
}
#chat-messages {
  max-height: 160px; overflow-y: auto;
  display: flex; flex-direction: column; gap: 2px;
  padding: 0 4px;
}
.chat-msg {
  font-size: .8rem; line-height: 1.4;
  background: rgba(10,12,20,.65); border-radius: 4px; padding: 2px 6px;
}
.chat-author { color: var(--col-accent); font-weight: 600; margin-right: 4px; }
.chat-text   { color: #c0ccd8; }
#chat-input-wrap {
  display: flex; gap: 6px; margin-top: 4px;
}
#chat-input {
  flex: 1; padding: 6px 10px;
  background: rgba(10,12,20,.9); border: 1px solid var(--col-border);
  border-radius: 6px; color: var(--col-text); font-size: .85rem; outline: none;
}
#chat-input:focus { border-color: var(--col-accent); }
#chat-send {
  padding: 6px 12px; background: var(--col-accent); color: #fff;
  border: none; border-radius: 6px; cursor: pointer; font-size: .82rem;
}

/* ═══════════════════ PANELS ═══════════════════ */
.panel {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%);
  background: rgba(10,12,20,.96); border: 1px solid var(--col-border);
  border-radius: 10px; min-width: 380px; pointer-events: auto;
  box-shadow: 0 0 40px rgba(0,0,0,.6);
}
.panel-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 18px; border-bottom: 1px solid var(--col-border);
  font-weight: 700; color: var(--col-accent); font-size: 1rem;
}
.panel-close {
  background: none; border: none; color: #556; cursor: pointer; font-size: 1rem;
  transition: color .15s;
}
.panel-close:hover { color: #e05050; }

/* Inventory */
#inventory-grid {
  display: grid; grid-template-columns: repeat(6, 56px);
  gap: 6px; padding: 14px 18px;
}
.inv-slot {
  width: 56px; height: 56px;
  background: rgba(0,0,0,.4); border: 1px solid var(--col-border);
  border-radius: 6px; display: flex; align-items: center; justify-content: center;
  cursor: pointer; position: relative; transition: border-color .15s;
}
.inv-slot:hover { border-color: var(--col-accent); }
.inv-slot.has-item { border-color: rgba(80,144,255,.3); }
.inv-slot-icon { font-size: 1.6rem; }
.inv-slot-qty {
  position: absolute; bottom: 2px; right: 4px;
  font-size: .65rem; color: var(--col-gold); font-weight: 600;
}

#equipment-slots {
  display: flex; gap: 10px; padding: 0 18px 14px;
}
.eq-slot {
  flex: 1; min-height: 56px;
  background: rgba(0,0,0,.3); border: 1px dashed var(--col-border);
  border-radius: 6px; display: flex; align-items: center; justify-content: center;
  font-size: .75rem; color: #445; cursor: pointer; transition: border-color .15s;
}
.eq-slot:hover { border-color: var(--col-accent); }
.eq-slot.equipped { border-color: var(--col-gold); color: var(--col-gold); }

#player-stats-panel {
  padding: 12px 18px; border-top: 1px solid var(--col-border);
  display: grid; grid-template-columns: 1fr 1fr; gap: 6px;
}
.stat-row { display: flex; justify-content: space-between; font-size: .85rem; padding: 4px 8px; background: rgba(0,0,0,.2); border-radius: 4px; }
.stat-row span:last-child { color: var(--col-accent); font-weight: 600; }

/* Quests */
#quest-list { padding: 12px 18px; max-height: 200px; overflow-y: auto; }
.quest-item {
  padding: 8px 12px; margin-bottom: 6px;
  background: rgba(0,0,0,.3); border-left: 3px solid var(--col-gold);
  border-radius: 0 6px 6px 0; cursor: pointer;
}
.quest-item:hover { background: rgba(80,144,255,.1); }
.quest-item.completed { border-color: #60a040; opacity: .6; }
.quest-name { font-weight: 600; color: var(--col-gold); font-size: .88rem; }
.quest-status { font-size: .75rem; color: #8090a0; }
#quest-detail {
  padding: 12px 18px; min-height: 100px;
  border-top: 1px solid var(--col-border);
  font-size: .85rem; color: #8090a0; line-height: 1.5;
}

/* ═══════════════════ DIALOG BOX ═══════════════════ */
#dialog-box {
  position: absolute; bottom: 100px; left: 50%; transform: translateX(-50%);
  width: 580px; max-width: 90vw;
  background: rgba(8,10,18,.95); border: 1px solid var(--col-border);
  border-radius: 10px; padding: 18px 22px;
  pointer-events: auto;
}
#dialog-npc-name { color: var(--col-accent); font-weight: 700; font-size: 1rem; margin-bottom: 8px; }
#dialog-text { color: var(--col-text); font-size: .9rem; line-height: 1.6; margin-bottom: 12px; }
#dialog-choices { display: flex; flex-direction: column; gap: 6px; }
.dialog-choice {
  padding: 7px 14px; background: rgba(80,144,255,.1);
  border: 1px solid var(--col-accent); border-radius: 6px;
  color: var(--col-accent); cursor: pointer; font-size: .85rem;
  transition: background .15s;
}
.dialog-choice:hover { background: rgba(80,144,255,.25); }

/* ═══════════════════ ESC MENU / SETTINGS ═══════════════════ */
#esc-menu, #settings-panel {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,.6);
  pointer-events: auto;
}
#settings-panel label {
  display: flex; justify-content: space-between; align-items: center;
  font-size: .88rem; gap: 12px;
}
#settings-panel input[type="range"] { width: 120px; }
#settings-panel select {
  background: var(--col-panel); border: 1px solid var(--col-border);
  color: var(--col-text); border-radius: 4px; padding: 3px 6px;
}

/* ═══════════════════ LOADING ═══════════════════ */
#loading-screen {
  position: fixed; inset: 0;
  background: radial-gradient(ellipse at center, #0d1230 0%, #050810 100%);
  display: flex; align-items: center; justify-content: center;
  z-index: 9999;
}
.loading-inner { text-align: center; display: flex; flex-direction: column; align-items: center; gap: 18px; }
.loading-spinner {
  width: 50px; height: 50px;
  border: 4px solid rgba(80,144,255,.2);
  border-top-color: var(--col-accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
#loading-text { color: var(--col-text); font-size: .9rem; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ═══════════════════ NPC LABEL (Three.js CSS2DRenderer not used — HTML) ═══════════════════ */
.npc-label {
  position: absolute; pointer-events: none;
  text-align: center; transform: translateX(-50%);
}
.npc-name { background: rgba(0,0,0,.65); border-radius: 3px; padding: 1px 6px; font-size: .72rem; color: #fff; }
.npc-quest-icon { font-size: 1.1rem; color: var(--col-gold); text-shadow: 0 0 6px var(--col-gold); }

/* Enemy health bar overlay */
.enemy-hpbar {
  position: absolute; transform: translateX(-50%);
  pointer-events: none; text-align: center;
}
.enemy-hpbar-bg { width: 60px; height: 6px; background: rgba(0,0,0,.6); border-radius: 3px; overflow: hidden; }
.enemy-hpbar-fill { height: 100%; background: var(--col-hp); border-radius: 3px; transition: width .2s; }
.enemy-hpbar-name { font-size: .68rem; color: #e08080; margin-bottom: 2px; }

/* Tooltip */
#item-tooltip {
  position: fixed; pointer-events: none;
  background: rgba(8,10,20,.96); border: 1px solid var(--col-accent);
  border-radius: 8px; padding: 10px 14px; max-width: 220px; z-index: 1000;
  font-size: .82rem;
}
.tooltip-name   { color: var(--col-accent); font-weight: 700; margin-bottom: 4px; }
.tooltip-type   { color: #667; font-size: .75rem; text-transform: uppercase; margin-bottom: 6px; }
.tooltip-stat   { color: #a0c0e0; }
.tooltip-desc   { color: #667; font-size: .78rem; margin-top: 6px; border-top: 1px solid var(--col-border); padding-top: 6px; }

/* Scrollbars */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--col-border); border-radius: 3px; }