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

@font-face {
  font-family: 'Tech';
  src: local('Consolas'), local('Courier New');
}

:root {
  --bg: #0a0a0a;
  --surface: #111;
  --border: #2a2a2a;
  --text: #e0e0e0;
  --text-dim: #666;
  --accent: #fff;
  --accent-dim: #888;
  --glow: 0 0 20px rgba(255,255,255,0.08);
  --font: 'Courier New', 'Consolas', 'Microsoft YaHei', monospace;
}

html, body {
  width: 100%; height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
}

/* ===== Landing Page ===== */
.landing {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  gap: 60px;
  position: relative;
}

.landing::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 600px; height: 600px;
  border: 1px solid #1a1a1a;
  border-radius: 50%;
  pointer-events: none;
}

.landing::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 400px; height: 400px;
  border: 1px dashed #151515;
  border-radius: 50%;
  pointer-events: none;
  animation: rotate 60s linear infinite;
}

@keyframes rotate { to { transform: translate(-50%, -50%) rotate(360deg); } }

.landing-title {
  font-size: 64px;
  font-weight: 300;
  letter-spacing: 20px;
  color: var(--accent);
  text-transform: uppercase;
  position: relative;
  z-index: 1;
  text-shadow: 0 0 40px rgba(255,255,255,0.3);
}

.landing-subtitle {
  font-size: 14px;
  letter-spacing: 8px;
  color: var(--text-dim);
  position: relative;
  z-index: 1;
}

.btn-start {
  position: relative;
  z-index: 1;
  background: transparent;
  border: 1px solid var(--accent-dim);
  color: var(--accent);
  padding: 16px 60px;
  font-family: var(--font);
  font-size: 18px;
  letter-spacing: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
}

.btn-start:hover {
  background: var(--accent);
  color: var(--bg);
  box-shadow: 0 0 40px rgba(255,255,255,0.2);
}

/* ===== Game Page ===== */
.game-container {
  width: 100vw; height: 100vh;
  background: #000;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

#gameVideo {
  width: 100%; height: 100%;
  object-fit: contain;
  background: #000;
}

/* Choice Overlay */
.choice-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 40px;
  z-index: 10;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.6s ease;
}

.choice-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.choice-overlay::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: -1;
}

.choice-prompt {
  font-size: 28px;
  letter-spacing: 6px;
  color: var(--accent);
  text-align: center;
}

.choice-buttons {
  display: flex;
  gap: 60px;
}

.btn-choice {
  background: transparent;
  border: 1px solid var(--accent-dim);
  color: var(--text);
  padding: 20px 50px;
  font-family: var(--font);
  font-size: 20px;
  letter-spacing: 6px;
  cursor: pointer;
  transition: all 0.3s ease;
  min-width: 200px;
  text-align: center;
}

.btn-choice:hover {
  border-color: var(--accent);
  background: rgba(255,255,255,0.05);
  color: var(--accent);
  box-shadow: 0 0 30px rgba(255,255,255,0.1);
}

/* ===== Admin Page ===== */
.admin-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 30px;
  height: 100vh;
  overflow-y: auto;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 30px;
}

.admin-header h1 {
  font-size: 24px;
  letter-spacing: 6px;
  font-weight: 300;
}

.admin-header a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 2px;
  border: 1px solid var(--border);
  padding: 8px 20px;
  transition: all 0.3s;
}

.admin-header a:hover {
  border-color: var(--accent-dim);
  color: var(--accent);
}

.admin-section {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 24px;
  margin-bottom: 24px;
}

.admin-section h2 {
  font-size: 16px;
  letter-spacing: 4px;
  margin-bottom: 20px;
  font-weight: 300;
  color: var(--accent-dim);
}

/* Upload area */
.upload-area {
  border: 1px dashed var(--border);
  padding: 40px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s;
  margin-bottom: 16px;
}

.upload-area:hover {
  border-color: var(--accent-dim);
  background: rgba(255,255,255,0.02);
}

.upload-area input { display: none; }

.upload-area p {
  color: var(--text-dim);
  font-size: 14px;
  letter-spacing: 2px;
}

/* Video list */
.video-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.video-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border: 1px solid var(--border);
  font-size: 12px;
}

.video-item .name { color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; }
.video-item .btn-del {
  background: none; border: none;
  color: #555; cursor: pointer;
  font-family: var(--font); font-size: 12px;
  padding: 4px 12px;
}
.video-item .btn-del:hover { color: #f44; }

.upload-status {
  margin-top: 10px;
  font-size: 12px;
  color: var(--accent-dim);
}

/* Story config */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 12px;
  letter-spacing: 2px;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.form-group select, .form-group input, .form-group textarea {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font);
  font-size: 13px;
  outline: none;
  transition: border-color 0.3s;
}

.form-group select:focus, .form-group input:focus, .form-group textarea:focus {
  border-color: var(--accent-dim);
}

/* Node editor */
.node-card {
  border: 1px solid var(--border);
  padding: 20px;
  margin-bottom: 16px;
}

.node-card h3 {
  font-size: 14px;
  font-weight: 300;
  letter-spacing: 3px;
  margin-bottom: 14px;
  color: var(--accent-dim);
}

.choice-row {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-bottom: 10px;
}

.choice-row input {
  flex: 1;
  padding: 8px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font);
  font-size: 12px;
  outline: none;
}

.choice-row input:focus { border-color: var(--accent-dim); }
.choice-row select {
  width: 200px;
  padding: 8px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: var(--font);
  font-size: 12px;
  outline: none;
}

.btn-sm {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 8px 18px;
  font-family: var(--font);
  font-size: 12px;
  letter-spacing: 2px;
  cursor: pointer;
  transition: all 0.3s;
  text-transform: uppercase;
}

.btn-sm:hover { border-color: var(--accent-dim); color: var(--accent); }
.btn-sm.danger { color: #855; border-color: #333; }
.btn-sm.danger:hover { color: #f44; border-color: #844; }

.btn-row {
  display: flex;
  gap: 10px;
  margin-top: 10px;
}

/* Status message */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 12px 30px;
  font-size: 13px;
  letter-spacing: 2px;
  z-index: 999;
  animation: fadeInOut 2.5s ease forwards;
}

.toast.error { border-color: #844; color: #f88; }
.toast.success { border-color: #484; color: #8f8; }

@keyframes fadeInOut {
  0% { opacity: 0; transform: translateX(-50%) translateY(10px); }
  15% { opacity: 1; transform: translateX(-50%) translateY(0); }
  70% { opacity: 1; }
  100% { opacity: 0; }
}