/* Styling variables shared from CineAHO Portal */
:root {
  --bg-color: #060913;
  --bg-grid: rgba(255, 255, 255, 0.015);
  
  --panel-bg: rgba(14, 20, 38, 0.55);
  --panel-border: rgba(255, 255, 255, 0.05);
  --panel-hover-border: rgba(99, 102, 241, 0.25);
  
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dark: #475569;
  
  --accent-color: #6366f1;
  --accent-glow: 0 0 20px rgba(99, 102, 241, 0.3);
  --shadow-card: 0 12px 40px 0 rgba(0, 0, 0, 0.6);
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Noto Sans KR', 'Inter', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  line-height: 1.6;
}

/* Grid Background */
body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(var(--bg-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
  background-size: 40px 40px;
  z-index: -2;
  pointer-events: none;
}

/* Ambient glow */
.bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(150px);
  z-index: -3;
  pointer-events: none;
  opacity: 0.15;
}

.bg-glow-purple {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #7e22ce 0%, transparent 70%);
  top: -100px;
  left: 10%;
}

.bg-glow-blue {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, #2563eb 0%, transparent 70%);
  bottom: 10%;
  right: 5%;
}

/* Header style shared */
.main-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  margin: 1rem 1.5rem 0 1.5rem;
  border-radius: 50px;
  border: 1px solid var(--panel-border);
  background: var(--panel-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.logo-circle {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #3b82f6 0%, #1e40af 100%);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.85rem;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-text {
  font-family: var(--font-main);
  font-weight: 700;
  font-size: 0.95rem;
}

.logo-text span {
  color: var(--text-muted);
  font-weight: 400;
}

.header-nav {
  flex-grow: 1;
  margin: 0 2rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.header-nav::-webkit-scrollbar {
  display: none;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 1.25rem;
  white-space: nowrap;
}

.nav-list a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: var(--transition-smooth);
}

.nav-list a.active,
.nav-list a:hover {
  color: var(--text-main);
}

.btn-back-dashboard {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 30px;
  padding: 0.5rem 1rem;
  color: var(--text-main);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-back-dashboard:hover {
  background: rgba(255,255,255,0.12);
  border-color: #3b82f6;
}

/* Main Container Layout */
.game-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 3rem 2rem;
}

.game-content {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 2rem;
  margin-bottom: 2.5rem;
  align-items: start;
}

/* Left Panel: Board View */
.board-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.75rem;
  height: 800px; /* Fixed height match */
}

.board-status-bar {
  display: flex;
  width: 100%;
  max-width: 600px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding: 0.5rem 0.25rem;
}

.turn-indicator {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.turn-stone {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 2px 4px rgba(0,0,0,0.4);
}

.stone-black {
  background: radial-gradient(circle at 30% 30%, #454545 0%, #0c0c0c 80%);
  border: 1px solid rgba(0,0,0,0.8);
}

.stone-white {
  background: radial-gradient(circle at 30% 30%, #ffffff 0%, #dcdcdc 80%);
  border: 1px solid rgba(255,255,255,0.8);
}

.turn-text {
  font-weight: 700;
  font-size: 0.95rem;
}

.board-meta {
  display: flex;
  gap: 0.85rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.board-meta strong {
  color: var(--text-main);
}

.meta-divider {
  width: 1px;
  height: 16px;
  background-color: rgba(255, 255, 255, 0.08);
  align-self: center;
}

/* Board Viewport & Spanning Modal */
.board-viewport {
  position: relative;
  width: 100%;
  max-width: 600px;
  aspect-ratio: 1 / 1;
  background-color: #d8a05f; /* Wood color mockup */
  border-radius: 16px;
  box-shadow: inset 0 0 40px rgba(0,0,0,0.4), var(--shadow-card);
  border: 4px solid #b77b3b;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

#omok-canvas {
  width: 100%;
  height: 100%;
  cursor: pointer;
}

/* Start Modal overlay (Inside Board) */
.start-modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(6, 9, 19, 0.65);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: var(--transition-smooth);
}

.start-modal-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.start-modal-box {
  width: 80%;
  max-width: 400px;
  padding: 2.5rem 2rem;
  background-color: rgba(26, 21, 18, 0.95); /* Dark wood style */
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 20px;
  box-shadow: var(--shadow-card);
  text-align: center;
  transform: translateY(0);
  transition: var(--transition-smooth);
}

.start-modal-overlay.hidden .start-modal-box {
  transform: translateY(-20px);
}

.stones-icon {
  display: inline-flex;
  position: relative;
  width: 60px;
  height: 35px;
  margin-bottom: 1.25rem;
}

.ico-stone {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  position: absolute;
  box-shadow: 0 4px 10px rgba(0,0,0,0.5);
}

.black-ico {
  background: radial-gradient(circle at 30% 30%, #454545 0%, #000 80%);
  left: 0;
  z-index: 2;
}

.white-ico {
  background: radial-gradient(circle at 30% 30%, #ffffff 0%, #dcdcdc 80%);
  right: 0;
  z-index: 1;
}

.start-modal-box h2 {
  font-size: 1.45rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  letter-spacing: -0.5px;
}

.start-modal-box p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.start-options {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.start-options .btn {
  width: 100%;
  padding: 0.9rem;
  border-radius: 12px;
  font-weight: 700;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  cursor: pointer;
  border: none;
  transition: var(--transition-smooth);
}

.btn-start-black {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  color: #fff;
}

.btn-start-black:hover {
  background-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.btn-start-white {
  background-color: #ffffff;
  color: #000;
}

.btn-start-white:hover {
  filter: brightness(0.9);
  transform: translateY(-2px);
}

.dot-stone {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-stone.black { background: #000; border: 1px solid rgba(255,255,255,0.3); }
.dot-stone.white { background: #fff; border: 1px solid rgba(0,0,0,0.3); }

/* Board Toolbar */
.board-toolbar {
  display: flex;
  gap: 0.5rem;
  margin-top: 1.5rem;
  width: 100%;
  max-width: 600px;
}

.btn-tool {
  flex: 1;
  padding: 0.85rem;
  border-radius: 12px;
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
}

.btn-tool:hover:not(:disabled) {
  background-color: rgba(255, 255, 255, 0.07);
  color: var(--text-main);
  border-color: var(--accent-color);
}

.btn-tool:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

/* Right Config panel */
.config-panel {
  height: 800px;
  display: flex;
  flex-direction: column;
}

.panel-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  margin-bottom: 1.25rem;
  flex-shrink: 0;
}

.panel-header i {
  color: var(--accent-color);
  font-size: 1.15rem;
}

.panel-header h2 {
  font-size: 1.05rem;
  font-weight: 700;
}

.config-scroll-area {
  flex-grow: 1;
  overflow-y: auto;
  padding-right: 0.25rem;
}

/* Scroll Custom */
.config-scroll-area::-webkit-scrollbar {
  width: 5px;
}

.config-scroll-area::-webkit-scrollbar-track {
  background: transparent;
}

.config-scroll-area::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.05);
  border-radius: 10px;
}

/* Setting Elements */
.setting-group {
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.setting-group label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Mode Switch Tabs */
.mode-tabs {
  display: flex;
  background-color: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  padding: 0.25rem;
}

.tab-btn {
  flex: 1;
  padding: 0.6rem 0.25rem;
  border-radius: 8px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.78rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.tab-btn.active {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
  border: 1px solid rgba(255,255,255,0.03);
}

/* Radio Cards (Stone color choice) */
.color-options {
  display: flex;
  gap: 0.75rem;
}

.radio-card {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  background-color: rgba(0,0,0,0.15);
  border: 1px solid rgba(255,255,255,0.04);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.radio-card input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.radio-design {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #454545, #000);
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: inline-block;
  transition: var(--transition-smooth);
}

.white-design {
  background: radial-gradient(circle at 30% 30%, #fff, #dcdcdc);
  border: 1px solid rgba(0, 0, 0, 0.2);
}

.radio-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
}

.radio-card:hover {
  background-color: rgba(255,255,255,0.02);
}

.radio-card input:checked + .radio-design {
  transform: scale(1.15);
  box-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
}

.radio-card input:checked ~ .radio-label {
  color: var(--text-main);
}

.radio-card:has(input:checked) {
  border-color: var(--accent-color);
  background-color: rgba(99, 102, 241, 0.05);
}

/* Dropdown styling */
.select-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.select-wrapper select {
  width: 100%;
  padding: 0.8rem 1rem;
  background-color: rgba(0,0,0,0.2);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 10px;
  color: var(--text-main);
  outline: none;
  font-family: var(--font-main);
  font-size: 0.85rem;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  transition: var(--transition-smooth);
}

.select-wrapper select:focus {
  border-color: var(--accent-color);
}

.select-wrapper i {
  position: absolute;
  right: 1.15rem;
  color: var(--text-muted);
  pointer-events: none;
  font-size: 0.75rem;
}

.divider {
  border: 0;
  height: 1px;
  background: linear-gradient(to right, rgba(255,255,255,0), rgba(255,255,255,0.06), rgba(255,255,255,0));
  margin: 1.5rem 0;
}

/* Advanced Switch List */
.toggle-list {
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
  margin-bottom: 1.75rem;
}

.toggle-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.toggle-meta {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.toggle-meta span {
  font-size: 0.85rem;
  font-weight: 600;
}

.toggle-meta p {
  font-size: 0.7rem;
  color: var(--text-dark);
}

/* Custom Toggle Switch Slider */
.switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider-toggle {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  transition: .3s;
  border-radius: 34px;
}

.slider-toggle:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: var(--text-muted);
  transition: .3s;
  border-radius: 50%;
}

.switch input:checked + .slider-toggle {
  background-color: var(--accent-color);
  border-color: rgba(255,255,255,0.02);
}

.switch input:checked + .slider-toggle:before {
  transform: translateX(20px);
  background-color: #ffffff;
  box-shadow: 0 0 10px rgba(255,255,255,0.4);
}

/* Rule descriptions box */
.rule-desc-box {
  background-color: rgba(255, 255, 255, 0.015);
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  padding: 1rem;
  margin-top: 1rem;
}

.rule-desc-box ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.rule-desc-box li {
  font-size: 0.72rem;
  color: var(--text-dark);
  line-height: 1.4;
}

.btn-toggle-config {
  width: 100%;
  padding: 0.85rem;
  border-radius: 12px;
  background: var(--grad-purple);
  color: #fff;
  border: none;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  margin-top: auto;
  flex-shrink: 0;
  box-shadow: 0 5px 15px rgba(168, 85, 247, 0.15);
}

.btn-toggle-config:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
  box-shadow: 0 8px 20px rgba(168, 85, 247, 0.3);
}

/* Bottom Guide Section */
.guide-panel {
  padding: 2.25rem 2rem;
}

.guide-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.75rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.guide-header i {
  color: var(--accent-color);
  font-size: 1.35rem;
}

.guide-header h2 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.guide-header span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.guide-content-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.guide-card {
  padding: 1.5rem;
  background-color: rgba(255, 255, 255, 0.015);
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: 16px;
}

.guide-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.65rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-main);
}

.guide-card h4 i {
  color: var(--accent-color);
}

.guide-card p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Winner Modal overlay popup */
.winner-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(6, 9, 19, 0.85);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-smooth);
}

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

.winner-box {
  width: 90%;
  max-width: 420px;
  padding: 3rem 2rem;
  border-radius: 24px;
  border: 1px solid rgba(255,255,255,0.08);
  text-align: center;
  transform: scale(0.9);
  transition: var(--transition-smooth);
}

.winner-modal-overlay.open .winner-box {
  transform: scale(1);
}

.trophy-icon {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  background: linear-gradient(135deg, #fbbf24 0%, #d97706 100%);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  margin: 0 auto 1.5rem auto;
  box-shadow: 0 8px 25px rgba(251, 191, 36, 0.4);
}

.winner-box h2 {
  font-size: 1.65rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  letter-spacing: -0.5px;
}

.winner-box p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.btn-win-close {
  padding: 0.85rem 2rem;
  border-radius: 12px;
  background-color: var(--accent-color);
  color: #fff;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: var(--transition-smooth);
  box-shadow: var(--accent-glow);
}

.btn-win-close:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

/* Responsive styles */
@media (max-width: 1100px) {
  .game-content {
    grid-template-columns: 1fr;
  }
  .board-panel,
  .config-panel {
    height: auto;
  }
  .config-panel {
    padding: 2rem;
  }
  .guide-content-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .main-header {
    flex-direction: column;
    margin: 1rem;
    padding: 1.25rem;
    border-radius: 20px;
  }
  .header-nav {
    width: 100%;
    margin: 0.5rem 0;
  }
  .board-viewport {
    border-width: 2px;
  }
  .board-toolbar {
    flex-wrap: wrap;
  }
  .btn-tool {
    flex: calc(50% - 0.25rem);
  }
}