/* ==========================================================================
   🏰 Robot Architect (หุ่นยนต์สร้างปราสาท) — Dark RPG Glassmorphism Theme
   Inspired by Nisit Zombie aesthetic: Kanit typography, gold bevels,
   tactile RPG buttons, glowing blueprint zones, and clean dark layout.
   ========================================================================== */

:root {
  --bg-deep: #080c16;
  --bg-space: #0c1222;
  --panel-bg: rgba(16, 24, 40, 0.88);
  --panel-card: rgba(24, 34, 56, 0.75);
  --panel-border: rgba(251, 191, 36, 0.28);
  --panel-border-bright: rgba(251, 191, 36, 0.7);
  --panel-glow: rgba(245, 158, 11, 0.22);

  --gold-300: #fde68a;
  --gold-400: #fbbf24;
  --gold-500: #f59e0b;
  --gold-600: #d97706;

  --cyan-400: #38bdf8;
  --cyan-500: #0ea5e9;
  --purple-400: #c084fc;
  --purple-500: #a855f7;
  --emerald-400: #34d399;
  --emerald-500: #10b981;
  --rose-400: #fb7185;
  --rose-500: #f43f5e;

  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  --font-thai: 'Kanit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Fira Code', ui-monospace, SFMono-Regular, Menlo, monospace;
}

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

body {
  font-family: var(--font-thai);
  background-color: var(--bg-deep);
  background-image: 
    radial-gradient(ellipse at 50% 0%, rgba(30, 58, 138, 0.28) 0%, transparent 60%),
    radial-gradient(ellipse at 85% 90%, rgba(168, 85, 247, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 15% 75%, rgba(245, 158, 11, 0.08) 0%, transparent 40%);
  background-attachment: fixed;
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* App Shell */
.app-shell {
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 16px 20px 40px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Header & Breadcrumb */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 22px;
  background: var(--panel-bg);
  border: 1.5px solid var(--panel-border);
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(14px);
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.25), rgba(168, 85, 247, 0.25));
  border: 1.5px solid var(--gold-400);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  box-shadow: 0 4px 14px var(--panel-glow);
}

.brand-info h1 {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.3px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  background: linear-gradient(90deg, #f59e0b, #ef4444);
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.brand-info p {
  font-size: 13px;
  color: var(--text-muted);
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-rpg-nav {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--gold-300);
  background: rgba(251, 191, 36, 0.1);
  border: 1px solid rgba(251, 191, 36, 0.3);
  text-decoration: none;
  transition: all 0.15s ease;
}

.btn-rpg-nav:hover {
  background: rgba(251, 191, 36, 0.22);
  border-color: var(--gold-400);
  color: #fff;
  transform: translateY(-1px);
}

.btn-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}

.btn-icon:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
}

/* Level Tabs */
.level-nav {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.level-tab {
  padding: 12px 14px;
  border-radius: 14px;
  background: var(--panel-bg);
  border: 1.5px solid rgba(255, 255, 255, 0.08);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.2s ease;
  text-align: left;
}

.level-tab:hover {
  border-color: rgba(251, 191, 36, 0.4);
  transform: translateY(-2px);
  background: rgba(24, 34, 56, 0.95);
}

.level-tab.active {
  border-color: var(--gold-400);
  background: linear-gradient(145deg, rgba(26, 38, 66, 0.95), rgba(40, 24, 60, 0.85));
  box-shadow: 0 0 20px rgba(245, 158, 11, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.tab-title {
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  display: block;
}

.tab-subtitle {
  font-size: 11px;
  color: var(--text-muted);
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 170px;
}

.tab-stars {
  font-size: 13px;
  color: var(--gold-400);
  letter-spacing: 1px;
}

/* Main Grid Layout */
.workspace-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 18px;
  align-items: start;
}

@media (max-width: 1040px) {
  .workspace-grid {
    grid-template-columns: 1fr;
  }
}

/* Left Panel: Blueprint Canvas & World */
.canvas-card {
  background: var(--panel-bg);
  border: 1.5px solid var(--panel-border);
  border-radius: 18px;
  padding: 16px;
  box-shadow: 0 14px 35px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(14px);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.mission-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-radius: 12px;
  background: linear-gradient(90deg, rgba(30, 41, 59, 0.9), rgba(15, 23, 42, 0.9));
  border: 1px solid rgba(251, 191, 36, 0.2);
}

.mission-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.concept-badge {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 6px;
  background: linear-gradient(135deg, #8b5cf6, #ec4899);
  color: #fff;
  letter-spacing: 0.3px;
  box-shadow: 0 2px 8px rgba(139, 92, 246, 0.35);
}

.mission-hint {
  font-size: 13px;
  font-weight: 500;
  color: var(--gold-300);
}

.blueprint-meta {
  display: flex;
  align-items: center;
  gap: 14px;
}

.meta-pill {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  background: rgba(0, 0, 0, 0.3);
  padding: 4px 10px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.meta-pill b {
  color: #fff;
}

/* Canvas Viewport */
.canvas-wrapper {
  position: relative;
  background: #090e18;
  border-radius: 14px;
  overflow: hidden;
  border: 2px solid rgba(251, 191, 36, 0.25);
  box-shadow: inset 0 0 40px rgba(0, 0, 0, 0.8), 0 8px 24px rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
}

#castleCanvas {
  display: block;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  width: 100%;
  height: auto;
  max-width: 660px;
}

/* Action Controls Bar */
.playback-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 14px;
  background: rgba(10, 15, 28, 0.75);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.btn-group-main {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-rpg-run {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #fff;
  border: 1px solid #34d399;
  border-radius: 10px;
  padding: 10px 22px;
  font-family: var(--font-thai);
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(16, 185, 129, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.3);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s ease;
}

.btn-rpg-run:hover:not(:disabled) {
  background: linear-gradient(135deg, #34d399 0%, #10b981 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.55);
}

.btn-rpg-run:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-rpg-step {
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  color: #fff;
  border: 1px solid #38bdf8;
  border-radius: 10px;
  padding: 10px 16px;
  font-family: var(--font-thai);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
}

.btn-rpg-step:hover:not(:disabled) {
  transform: translateY(-1px);
  background: linear-gradient(135deg, #38bdf8 0%, #0284c7 100%);
}

.btn-rpg-reset {
  background: rgba(239, 68, 68, 0.15);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 10px;
  padding: 10px 14px;
  font-family: var(--font-thai);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
}

.btn-rpg-reset:hover {
  background: rgba(239, 68, 68, 0.25);
  border-color: #f87171;
  color: #fff;
}

.btn-rpg-ghost {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 10px;
  padding: 10px 14px;
  font-family: var(--font-thai);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-rpg-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

/* Right Panel: Code Workspace */
.code-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.panel-block {
  background: var(--panel-bg);
  border: 1.5px solid var(--panel-border);
  border-radius: 16px;
  padding: 14px 16px;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(14px);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.panel-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.panel-title {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-title-badge {
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 6px;
  background: rgba(251, 191, 36, 0.15);
  color: var(--gold-400);
  border: 1px solid rgba(251, 191, 36, 0.3);
}

.block-counter {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
}

.block-counter b {
  color: var(--gold-400);
}

/* Function Workshop Box (Special Purple/Gold Border) */
.func-definition-box {
  background: linear-gradient(145deg, rgba(147, 51, 234, 0.15), rgba(15, 23, 42, 0.85));
  border: 1.5px dashed var(--purple-400);
  border-radius: 12px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.func-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(192, 132, 252, 0.25);
  padding-bottom: 8px;
}

.func-signature {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--purple-400);
  display: flex;
  align-items: center;
  gap: 6px;
}

.func-signature .kw { color: #f43f5e; }
.func-signature .fn { color: #facc15; }
.func-signature .param { color: #38bdf8; background: rgba(56, 189, 248, 0.15); padding: 1px 6px; border-radius: 4px; }

.func-desc {
  font-size: 12px;
  color: var(--text-muted);
}

.func-body-preview {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 12px;
  border-left: 2px solid var(--purple-400);
}

.chip-mini {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #e2e8f0;
}

/* Palette: Categories & Buttons */
.palette-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.palette-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.palette-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.btn-palette-block {
  padding: 8px 12px;
  border-radius: 8px;
  font-family: var(--font-thai);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid;
  transition: all 0.15s ease;
  user-select: none;
}

.btn-palette-block:hover {
  transform: translateY(-2px);
  filter: brightness(1.15);
}

/* Palette Block Styles */
.block-fn-call {
  background: linear-gradient(135deg, rgba(168, 85, 247, 0.25), rgba(126, 34, 206, 0.35));
  border-color: var(--purple-400);
  color: #e9d5ff;
  box-shadow: 0 2px 8px rgba(168, 85, 247, 0.25);
}

.block-move {
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.2), rgba(2, 132, 199, 0.3));
  border-color: var(--cyan-400);
  color: #bae6fd;
}

.block-build {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(217, 119, 6, 0.3));
  border-color: var(--gold-400);
  color: #fde68a;
}

/* Program Sequence Container */
.program-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 140px;
  max-height: 320px;
  overflow-y: auto;
  padding: 10px;
  background: rgba(10, 15, 26, 0.7);
  border-radius: 12px;
  border: 1px dashed rgba(255, 255, 255, 0.12);
}

.program-empty-hint {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: var(--text-dim);
  font-size: 13px;
  height: 100%;
  padding: 30px 0;
  text-align: center;
}

/* Program Block Cards */
.prog-block {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-radius: 10px;
  border: 1.5px solid;
  background: rgba(20, 30, 50, 0.85);
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  transition: all 0.15s ease;
  animation: slideInBlock 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideInBlock {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.prog-block.executing {
  border-color: #38bdf8 !important;
  box-shadow: 0 0 16px rgba(56, 189, 248, 0.8) !important;
  transform: scale(1.02);
}

.prog-block-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.prog-block-idx {
  font-size: 11px;
  color: var(--text-dim);
  width: 16px;
  text-align: right;
  font-family: var(--font-mono);
}

.prog-block-name {
  color: #fff;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Parameter Control (Stepper) */
.param-stepper {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(0, 0, 0, 0.4);
  padding: 2px 6px;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  margin-left: 6px;
}

.param-stepper span {
  font-size: 11px;
  color: var(--cyan-400);
}

.param-input {
  width: 32px;
  background: transparent;
  border: none;
  color: #fff;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  text-align: center;
}

.param-btn {
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: #fff;
  width: 18px;
  height: 18px;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  transition: all 0.1s;
}

.param-btn:hover {
  background: rgba(255, 255, 255, 0.25);
}

.prog-block-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-del-block {
  background: none;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  padding: 4px;
  border-radius: 4px;
  transition: all 0.1s;
}

.btn-del-block:hover {
  color: #f87171;
  background: rgba(239, 68, 68, 0.15);
}

/* Python Code Card */
.py-editor-box {
  background: #090e18;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 12px 14px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: #e2e8f0;
  max-height: 160px;
}

/* Star Requirements Info */
.star-conditions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-radius: 8px;
  background: rgba(251, 191, 36, 0.08);
  border: 1px solid rgba(251, 191, 36, 0.2);
  font-size: 12px;
  color: var(--gold-300);
}

/* Modals */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(4, 7, 14, 0.85);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
  animation: modalFadeIn 0.25s ease-out;
}

@keyframes modalFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-dialog {
  background: var(--panel-bg);
  border: 2px solid var(--gold-400);
  border-radius: 20px;
  max-width: 480px;
  width: 100%;
  padding: 28px 24px;
  text-align: center;
  box-shadow: 0 0 50px rgba(245, 158, 11, 0.35), 0 20px 40px rgba(0, 0, 0, 0.7);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  animation: modalPopIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalPopIn {
  from { transform: scale(0.85); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-stars {
  font-size: 42px;
  letter-spacing: 4px;
  filter: drop-shadow(0 4px 12px rgba(251, 191, 36, 0.5));
}

.modal-title {
  font-size: 24px;
  font-weight: 800;
  color: #fff;
}

.modal-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
}

.modal-takeaway {
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.3);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 13px;
  color: var(--cyan-400);
  text-align: left;
  line-height: 1.5;
  width: 100%;
}

.modal-btn-row {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  margin-top: 6px;
}

.modal-btn-row button, .modal-btn-row a {
  flex: 1;
}

.hidden {
  display: none !important;
}