@import url('https://fonts.googleapis.com/css2?family=M+PLUS+1+Code:wght@300;400;500;600;700&display=swap');

:root {
  --font-game: 'M PLUS 1 Code', monospace;
  
  /* Natural Watercolor Paper Palette */
  --bg-canvas: #F6F3EB;
  --bg-card: #FEFCF8;
  --bg-wash-sand: #EDE6D8;
  --bg-wash-warm: #F4EFE6;
  
  --ink-primary: #38332C;
  --ink-secondary: #6E665B;
  --ink-muted: #9E968A;
  
  /* Soft Watercolor Washes (Borderless) */
  --c-mint: #E1F4E7;
  --c-mint-hover: #D3EEDC;
  --c-mint-text: #22673D;
  
  --c-sakura: #FCE5E8;
  --c-sakura-hover: #FAD6DB;
  --c-sakura-text: #96283C;
  
  --c-lavender: #EFE7FA;
  --c-lavender-hover: #E3D6F6;
  --c-lavender-text: #59318E;
  
  --c-sky: #E2EFFB;
  --c-sky-hover: #D1E5F8;
  --c-sky-text: #1E5088;
  
  --c-butter: #FDF4D7;
  --c-butter-hover: #FCEEC4;
  --c-butter-text: #8E5C0A;
  
  --c-peach: #FDEEE4;
  --c-peach-hover: #FCDFCF;
  --c-peach-text: #8C4724;
  
  /* Soft Watercolor Ambient Shadow */
  --shadow-wash: 0 2px 8px -1px rgba(95, 83, 68, 0.08), 0 1px 3px rgba(0, 0, 0, 0.03);
  --shadow-wash-hover: 0 4px 14px -2px rgba(95, 83, 68, 0.13), 0 2px 4px rgba(0, 0, 0, 0.04);
}

* {
  font-family: var(--font-game) !important;
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  height: 100dvh;
  overflow: hidden; /* Cố định màn hình chuẩn game mobile */
  background-color: var(--bg-canvas);
  background-image: 
    radial-gradient(#E5DED0 0.8px, transparent 0.8px),
    radial-gradient(#E5DED0 0.8px, var(--bg-canvas) 0.8px);
  background-size: 20px 20px;
  background-position: 0 0, 10px 10px;
  color: var(--ink-primary);
}

/* ==============================================================================
   TRUE BORDERLESS WATERCOLOR SHAPES
   ============================================================================== */
.hand-border,
.hand-border-sm,
.hand-border-round {
  border: none !important;
  border-radius: 12px 16px 13px 15px / 15px 12px 16px 13px;
  box-shadow: var(--shadow-wash);
}

.hand-border-sm {
  border-radius: 9px 12px 10px 11px / 11px 9px 12px 10px;
}

.sketch-shadow,
.sketch-shadow-sm,
.sketch-shadow-lg {
  box-shadow: var(--shadow-wash);
}

/* Washi Tape Minimalist */
.washi-tape {
  position: absolute;
  top: -4px;
  left: 14px;
  width: 40px;
  height: 9px;
  background: rgba(248, 203, 212, 0.7);
  transform: rotate(-2.5deg);
  z-index: 10;
  pointer-events: none;
  border-radius: 2px;
}

.washi-tape-right {
  left: auto;
  right: 14px;
  transform: rotate(2deg);
  background: rgba(206, 236, 216, 0.7);
}

.washi-tape-yellow {
  background: rgba(254, 240, 195, 0.8);
  transform: rotate(-1.5deg);
}

/* Dense Game Buttons */
.game-btn {
  background-color: var(--bg-card);
  border: none !important;
  border-radius: 8px 11px 9px 10px;
  box-shadow: var(--shadow-wash);
  cursor: pointer;
  transition: all 0.12s cubic-bezier(0.4, 0, 0.2, 1);
  user-select: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: var(--ink-primary);
  font-weight: 600;
  padding: 3px 6px;
  font-size: 10.5px;
}

.game-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-wash-hover);
  background-color: #FFFFFF;
}

.game-btn:active {
  transform: translateY(1px);
  box-shadow: none;
}

/* Watercolor Button Washes */
.btn-mint { background-color: var(--c-mint); color: var(--c-mint-text); }
.btn-mint:hover { background-color: var(--c-mint-hover); }

.btn-sakura { background-color: var(--c-sakura); color: var(--c-sakura-text); }
.btn-sakura:hover { background-color: var(--c-sakura-hover); }

.btn-lavender { background-color: var(--c-lavender); color: var(--c-lavender-text); }
.btn-lavender:hover { background-color: var(--c-lavender-hover); }

.btn-sky { background-color: var(--c-sky); color: var(--c-sky-text); }
.btn-sky:hover { background-color: var(--c-sky-hover); }

.btn-butter { background-color: var(--c-butter); color: var(--c-butter-text); }
.btn-butter:hover { background-color: var(--c-butter-hover); }

.btn-peach { background-color: var(--c-peach); color: var(--c-peach-text); }
.btn-peach:hover { background-color: var(--c-peach-hover); }

/* ==============================================================================
   TRUE U-SHAPE LAYOUT SYSTEM (DESKTOP & MOBILE CONGRUENT)
   ============================================================================== */
.game-viewport {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  padding: 5px;
  max-width: 1680px;
  margin: 0 auto;
  width: 100%;
  overflow: hidden;
}

/* Top HUD Bar */
.top-hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 3px 8px;
  background: var(--bg-card);
  border: none !important;
  border-radius: 10px 14px 11px 13px;
  box-shadow: var(--shadow-wash);
  margin-bottom: 4px;
  flex-shrink: 0;
}

/* Core U-Shape Grid - BẮT BUỘC DUY TRÌ HÌNH CHỮ U TRÊN MỌI THIẾT BỊ */
.u-layout-grid {
  display: grid;
  grid-template-columns: 80px 1fr 80px;
  grid-template-rows: 1fr auto;
  gap: 5px;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

/* Cột Trái Chữ U (Left Wing) */
.u-wing-left {
  display: flex;
  flex-direction: column;
  gap: 5px;
  overflow-y: auto;
  min-height: 0;
  padding-bottom: 2px;
}

/* Cột Phải Chữ U (Right Wing) */
.u-wing-right {
  display: flex;
  flex-direction: column;
  gap: 5px;
  overflow-y: auto;
  min-height: 0;
  padding-bottom: 2px;
}

/* Đáy Chữ U (Bottom Dock) */
.u-wing-bottom {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 6px;
  padding: 3px 6px;
  background: var(--bg-card);
  border: none !important;
  border-radius: 10px 12px;
  box-shadow: var(--shadow-wash);
  flex-shrink: 0;
}

/* Sân Khấu Trung Tâm Lọt Lòng Chữ U (Center Stage) */
.u-center-stage {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: none !important;
  border-radius: 12px 15px 14px 13px;
  box-shadow: var(--shadow-wash);
  padding: 8px 10px;
  overflow-y: auto;
  position: relative;
  min-height: 0;
}

/* ==============================================================================
   ICON-TOP TEXT-BOTTOM GAME MENU ITEMS (DENSE U-BUTTONS)
   ============================================================================== */
.game-menu-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4px 2px;
  background: var(--bg-card);
  border: none !important;
  border-radius: 8px 10px;
  box-shadow: var(--shadow-wash);
  text-decoration: none;
  color: var(--ink-primary);
  transition: all 0.12s ease;
  user-select: none;
  cursor: pointer;
  width: 100%;
  flex-shrink: 0;
}

.game-menu-item .menu-icon-box {
  width: 28px;
  height: 28px;
  border-radius: 8px 10px;
  border: none !important;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2px;
  background: var(--bg-canvas);
  transition: all 0.12s ease;
}

.game-menu-item .menu-icon-box svg {
  width: 15px !important;
  height: 15px !important;
}

.game-menu-item .menu-label {
  font-size: 8.5px;
  font-weight: 700;
  line-height: 1.1;
  white-space: nowrap;
}

.game-menu-item .menu-sub {
  font-size: 7.5px;
  color: var(--ink-muted);
  font-weight: 400;
  margin-top: 1px;
  white-space: nowrap;
}

.game-menu-item:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-wash-hover);
  background-color: #FFFFFF;
}

.game-menu-item:active {
  transform: translateY(1px);
}

/* Active Highlight */
.game-menu-item.active {
  background-color: var(--c-butter);
  box-shadow: inset 0 1px 2px rgba(142, 92, 10, 0.08), var(--shadow-wash);
}

.game-menu-item.active .menu-icon-box {
  background-color: #FFFFFF;
}

.game-menu-item.active .menu-label {
  color: var(--c-butter-text);
}

.u-wing-bottom .game-menu-item {
  width: auto;
  min-width: 68px;
  padding: 3px 6px;
}

/* ==============================================================================
   IDLE MASCOT & SPEECH BUBBLE
   ============================================================================== */
@keyframes floatGentle {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-4px); }
}

@keyframes steamPuff {
  0% { opacity: 0; transform: translateY(0px) scale(0.8); }
  50% { opacity: 0.6; }
  100% { opacity: 0; transform: translateY(-10px) scale(1.2); }
}

.mascot-floating {
  animation: floatGentle 4s ease-in-out infinite;
}

.steam-1 {
  animation: steamPuff 2.2s ease-out infinite;
}

.steam-2 {
  animation: steamPuff 2.2s ease-out infinite 1.1s;
}

.speech-bubble {
  position: relative;
  background: var(--bg-card);
  border: none !important;
  border-radius: 12px 15px;
  box-shadow: var(--shadow-wash);
  padding: 6px 10px;
  max-width: 290px;
}

.speech-bubble::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 24px;
  width: 10px;
  height: 10px;
  background: var(--bg-card);
  transform: rotate(45deg);
}

/* Node Gem */
.node-gem {
  width: 8px;
  height: 8px;
  border: none !important;
  border-radius: 50%;
  display: inline-block;
  transition: all 0.2s ease;
}

.node-gem.idle {
  background: #52B788;
  box-shadow: 0 0 3px rgba(82, 183, 136, 0.6);
}

.node-gem.busy {
  background: #E63946;
  box-shadow: 0 0 4px rgba(230, 57, 70, 0.7);
}

/* Form resets */
input, textarea, select {
  border: none !important;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 7px !important;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 4px;
  height: 4px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: #D8CFBE;
  border-radius: 4px;
}

/* ==============================================================================
   MOBILE UI SPECIALIZATION (360px - 768px): KHÔNG ĐƯỢC PHÁ VỠ HÌNH CHỮ U!
   ============================================================================== */
@media (max-width: 768px) {
  .game-viewport {
    padding: 3px;
  }

  .top-hud {
    padding: 2px 6px;
    margin-bottom: 3px;
  }

  .top-hud h1 {
    font-size: 11px !important;
  }

  /* KHUNG CHỮ U MOBILE: 2 CÁNH 2 BÊN + ĐÁY NGANG */
  .u-layout-grid {
    grid-template-columns: 50px 1fr 50px;
    gap: 3px;
  }

  .u-wing-left,
  .u-wing-right {
    gap: 3px;
  }

  .game-menu-item {
    padding: 3px 1px;
    border-radius: 7px;
  }

  .game-menu-item .menu-icon-box {
    width: 24px;
    height: 24px;
    margin-bottom: 1px;
  }

  .game-menu-item .menu-icon-box svg {
    width: 13px !important;
    height: 13px !important;
  }

  .game-menu-item .menu-label {
    font-size: 7.5px;
    letter-spacing: -0.3px;
    transform: scale(0.95);
  }

  /* Ẩn chữ phụ trên Mobile để các nút siêu gọn không tràn */
  .game-menu-item .menu-sub {
    display: none !important;
  }

  .u-wing-bottom {
    gap: 4px;
    padding: 2px 4px;
  }

  .u-wing-bottom .game-menu-item {
    min-width: 52px;
    padding: 2px 3px;
  }

  .u-center-stage {
    padding: 6px 8px;
    border-radius: 10px;
  }

  .speech-bubble {
    max-width: 230px;
    padding: 5px 8px;
  }

  .speech-bubble p {
    font-size: 10px !important;
    line-height: 1.25 !important;
  }

  /* Tự động ngắt 1 cột cho danh sách tin nhắn trên mobile */
  #message-history {
    min-height: 160px;
  }
}

/* ==============================================================================
   H5 GAME MOBILE FRAME & MODAL SUITE
   ============================================================================== */
.h5-desktop-wrapper {
  width: 100%;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #0c0d14;
  background-image: 
    radial-gradient(rgba(37, 244, 238, 0.04) 1px, transparent 1px),
    radial-gradient(rgba(254, 44, 85, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  background-position: 0 0, 16px 16px;
  user-select: none;
  padding: 0;
}

@media (min-width: 640px) {
  .h5-desktop-wrapper {
    padding: 20px 0;
  }
}

.h5-device-frame {
  width: 100%;
  max-width: 440px;
  height: 100dvh;
  background-color: #FAF8F5;
  background-image: 
    radial-gradient(#E8E2D5 0.8px, transparent 0.8px),
    radial-gradient(#E8E2D5 0.8px, #FAF8F5 0.8px);
  background-size: 16px 16px;
  background-position: 0 0, 8px 8px;
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.8);
}

@media (min-width: 640px) {
  .h5-device-frame {
    height: 94vh;
    max-height: 890px;
    border-radius: 40px;
    border: 4px solid #232332;
    box-shadow: 0 0 0 1px rgba(255,255,255,0.1), 0 30px 80px rgba(0,0,0,0.7);
  }
}

.h5-notch {
  width: 120px;
  height: 18px;
  background: #181824;
  border-bottom-left-radius: 12px;
  border-bottom-right-radius: 12px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  z-index: 30;
}

.h5-camera-lens {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #090910;
  border: 1px solid #2b2b3f;
}

.h5-speaker-mesh {
  width: 38px;
  height: 3px;
  border-radius: 3px;
  background: #2b2b3f;
}

/* Modal Overlay & Drawer */
.game-modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(18, 18, 28, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 60;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.game-modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.game-modal {
  position: absolute;
  inset-x: 0;
  bottom: 0;
  top: 38px;
  background: #FAF8F5;
  border-top-left-radius: 28px;
  border-top-right-radius: 28px;
  box-shadow: 0 -12px 40px rgba(0, 0, 0, 0.25);
  display: flex;
  flex-direction: column;
  z-index: 70;
  transform: translateY(105%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
  border-top: 2px solid #EBE4D5;
}

.game-modal.active {
  transform: translateY(0);
}

.modal-drag-pill {
  width: 42px;
  height: 4.5px;
  border-radius: 4px;
  background: #D8D0C2;
  margin: 8px auto 4px auto;
}

/* App Grid Cards */
.app-card {
  background: #FFFFFF;
  border-radius: 18px;
  padding: 10px 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  cursor: pointer;
  transition: transform 0.16s ease, box-shadow 0.16s ease;
  box-shadow: 0 2px 6px rgba(60, 50, 40, 0.05);
  border: 1px solid rgba(220, 210, 195, 0.4);
}

.app-card:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 6px 14px rgba(60, 50, 40, 0.08);
}

.app-card:active {
  transform: scale(0.96);
}

/* H5 Game Dock */
.h5-dock {
  background: rgba(254, 252, 248, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top: 1px solid #E8E2D5;
  padding: 6px 10px calc(env(safe-area-inset-bottom, 6px) + 6px) 10px;
  display: flex;
  align-items: center;
  justify-content: space-around;
  z-index: 20;
}

.dock-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  color: #7A7265;
  font-size: 9px;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.15s ease, transform 0.15s ease;
  padding: 4px 8px;
  border-radius: 10px;
}

.dock-btn.active, .dock-btn:hover {
  color: #24201B;
  transform: translateY(-1px);
}

.dock-btn svg {
  width: 18px;
  height: 18px;
}