/* =====================================================
   INSIDER GAME - Global Styles & Neon Theme
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&family=Orbitron:wght@400;700;900&display=swap');

/* ── CSS Variables ── */
:root {
  --neon-green: #39ff14;
  --neon-green-dim: #1aaa00;
  --neon-cyan: #00ffe7;
  --neon-red: #ff2952;
  --neon-yellow: #ffe600;
  --neon-purple: #bf00ff;
  --bg-dark: #080808;
  --bg-card: #111111;
  --bg-card2: #181818;
  --border-color: #222222;
  --text-dim: #5a7a5a;
  --font-body: 'Orbitron', 'Noto Sans JP', sans-serif;
  --font-title: 'Orbitron', sans-serif;
  --glow-green: 0 0 4px rgba(57, 255, 20, 0.9), 0 0 12px rgba(57, 255, 20, 0.35), 0 0 24px rgba(57, 255, 20, 0.15);
  --glow-green-sm: 0 0 3px rgba(57, 255, 20, 0.8), 0 0 8px rgba(57, 255, 20, 0.25);
  --glow-red: 0 0 4px rgba(255, 41, 82, 0.9), 0 0 12px rgba(255, 41, 82, 0.35), 0 0 24px rgba(255, 41, 82, 0.15);
  --glow-cyan: 0 0 4px rgba(0, 255, 231, 0.9), 0 0 12px rgba(0, 255, 231, 0.3);
  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.2s ease;
}

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

html,
body {
  height: 100%;
  overflow: hidden;
}

body {
  background: var(--bg-dark);
  color: var(--neon-green);
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.6;
  -webkit-tap-highlight-color: transparent;
  -webkit-font-smoothing: antialiased;
}

input,
button,
select,
textarea {
  font-family: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

/* ── App container ── */
#app {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
}

/* ── Neon Text Utilities ── */
.neon-text {
  color: var(--neon-green);
  text-shadow: var(--glow-green);
}

.neon-text-dim {
  color: var(--neon-green-dim);
  text-shadow: 0 0 3px rgba(57, 255, 20, 0.15);
}

.neon-cyan {
  color: var(--neon-cyan);
  text-shadow: var(--glow-cyan);
}

.neon-red {
  color: var(--neon-red) !important;
  text-shadow: var(--glow-red) !important;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 14px;
  letter-spacing: 0.08em;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(57, 255, 20, 0.06);
  opacity: 0;
  transition: opacity var(--transition);
}

.btn:hover::after {
  opacity: 1;
}

.btn-primary {
  background: transparent;
  color: var(--neon-green);
  border: 2px solid var(--neon-green);
  box-shadow: var(--glow-green-sm), inset 0 0 20px rgba(57, 255, 20, 0.05);
  text-shadow: var(--glow-green-sm);
}

.btn-primary:hover {
  background: rgba(57, 255, 20, 0.12);
  box-shadow: var(--glow-green), inset 0 0 30px rgba(57, 255, 20, 0.1);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-ghost {
  color: var(--text-dim);
  border: 1px solid #2a2a2a;
}

.btn-ghost:hover {
  color: var(--neon-green);
  border-color: var(--neon-green-dim);
  text-shadow: var(--glow-green-sm);
}

.btn-large {
  padding: 16px 48px;
  font-size: 18px;
  letter-spacing: 0.15em;
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}

.btn-icon {
  padding: 10px 18px;
  font-size: 20px;
}

/* ── Form elements ── */
.input-field {
  width: 100%;
  background: var(--bg-card2);
  border: 1px solid #2a2a2a;
  border-radius: var(--radius-sm);
  color: var(--neon-green);
  padding: 10px 14px;
  font-family: var(--font-body);
  font-size: 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.input-field::placeholder {
  color: #3a5a3a;
}

.input-field:focus {
  border-color: var(--neon-green-dim);
  box-shadow: var(--glow-green-sm);
}

/* ── Language Switcher ── */
.lang-switcher {
  position: absolute;
  top: 16px;
  right: 16px;
  display: flex;
  gap: 8px;
  z-index: 100;
}

.flag-btn {
  font-family: var(--font-title);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #4a6a4a;
  background: var(--bg-card);
  border: 1px solid #2a2a2a;
  border-radius: var(--radius-sm);
  padding: 5px 10px;
  transition: all var(--transition);
  line-height: 1;
}

.flag-btn.active {
  color: var(--neon-green);
  border-color: var(--neon-green-dim);
  text-shadow: var(--glow-green-sm);
  box-shadow: var(--glow-green-sm);
}

.flag-btn:hover {
  color: var(--neon-green);
  border-color: #2a3a2a;
}

/* ── Screen base ── */
.screen {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transform: translateY(20px);
  transition: opacity 0.35s ease, transform 0.35s ease, visibility 0.35s ease;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  background: var(--bg-dark);
  z-index: 1;
}

.screen.active {
  opacity: 1;
  pointer-events: all;
  visibility: visible;
  transform: translateY(0);
  z-index: 2;
}

/* ── Screen Header ── */
.screen-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid #1a2a1a;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  background: var(--bg-dark);
  z-index: 10;
}

.screen-title {
  font-family: var(--font-mono);
  font-size: 16px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.btn-back {
  color: var(--neon-green-dim);
  font-size: 22px;
  padding: 4px 10px;
  border: 1px solid #2a2a2a;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.btn-back:hover {
  color: var(--neon-green);
  border-color: var(--neon-green-dim);
}

/* ── Screen Body ── */
.screen-body {
  flex: 1;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 520px;
  width: 100%;
  margin: 0 auto;
}

/* ── Toast ── */
.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--bg-card);
  color: var(--neon-green);
  border: 1px solid var(--neon-green-dim);
  box-shadow: var(--glow-green-sm);
  padding: 10px 24px;
  border-radius: var(--radius);
  font-size: 13px;
  z-index: 9999;
  transition: transform 0.3s ease, opacity 0.3s ease;
  opacity: 0;
  white-space: nowrap;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

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

::-webkit-scrollbar-track {
  background: #0f0f0f;
}

::-webkit-scrollbar-thumb {
  background: #1a3a1a;
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--neon-green-dim);
}

/* ── PC layout adjustments ── */
@media (min-width: 768px) {
  body {
    font-size: 15px;
  }

  .screen-body {
    padding: 32px 40px;
    max-width: 640px;
  }

  .btn-large {
    font-size: 20px;
    padding: 18px 60px;
  }

  .screen-header {
    padding: 18px 40px;
  }

  .lang-switcher {
    top: 20px;
    right: 40px;
  }
}