* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Inter, "Segoe UI", Roboto, Arial, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

:root {
  --bg-1: #03050f;
  --bg-2: #090f22;
  --card: rgba(15, 22, 45, 0.82);
  --card-border: rgba(255, 255, 255, 0.08);
  --text-main: #f5f7ff;
  --text-soft: #aab7e8;
  --primary: #7c5cff;
  --primary-2: #2de2e6;
  --primary-3: #ff4ecd;
  --shadow-main: 0 18px 50px rgba(0, 0, 0, 0.35);
  --shadow-glow: 0 0 28px rgba(124, 92, 255, 0.18);
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #000;
  color: var(--text-main);
}

body {
  position: relative;
}

/* =========================
   SETUP SCREEN
========================= */
.setup-screen {
  position: fixed;
  inset: 0;
  overflow-y: auto;
  background:
    radial-gradient(circle at 15% 20%, rgba(124, 92, 255, 0.14), transparent 28%),
    radial-gradient(circle at 85% 18%, rgba(45, 226, 230, 0.10), transparent 26%),
    radial-gradient(circle at 50% 85%, rgba(255, 78, 205, 0.08), transparent 30%),
    linear-gradient(135deg, var(--bg-1), var(--bg-2));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  z-index: 10;
}

.ambient-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  opacity: 0.35;
}

.glow-left {
  width: 260px;
  height: 260px;
  background: rgba(124, 92, 255, 0.22);
  left: 6%;
  top: 10%;
}

.glow-right {
  width: 320px;
  height: 320px;
  background: rgba(45, 226, 230, 0.14);
  right: 6%;
  bottom: 8%;
}

.setup-card {
  position: relative;
  z-index: 2;
  width: min(920px, 100%);
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 28px;
  padding: 28px;
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow-main);
}

.brand {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid rgba(124, 92, 255, 0.35);
  background: rgba(124, 92, 255, 0.08);
  color: #d6ceff;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 1.6px;
  margin-bottom: 14px;
  box-shadow: var(--shadow-glow);
}

.setup-card h1 {
  font-size: clamp(2rem, 4vw, 3.6rem);
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 10px;
}

.subtitle {
  color: var(--text-soft);
  font-size: clamp(0.95rem, 1.8vw, 1.08rem);
  line-height: 1.6;
  margin-bottom: 24px;
  max-width: 720px;
}

.input-group {
  margin-bottom: 22px;
}

.input-group label {
  display: block;
  font-weight: 700;
  margin-bottom: 10px;
  color: #dfe6ff;
}

.input-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

#messageInput {
  flex: 1;
  min-width: 240px;
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(8, 13, 30, 0.78);
  color: var(--text-main);
  font-size: 1rem;
  outline: none;
  transition: 0.25s ease;
}

#messageInput:focus {
  border-color: rgba(124, 92, 255, 0.5);
  box-shadow:
    0 0 0 3px rgba(124, 92, 255, 0.12),
    0 0 18px rgba(124, 92, 255, 0.12);
}

#messageInput::placeholder {
  color: #8492be;
}

.input-group small {
  display: block;
  margin-top: 8px;
  color: #8b98c3;
  font-size: 0.84rem;
}

.btn {
  border: none;
  outline: none;
  cursor: pointer;
  border-radius: 18px;
  padding: 14px 18px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: transform 0.18s ease, box-shadow 0.22s ease;
  user-select: none;
}

.btn:hover {
  transform: translateY(-2px);
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #9c72ff);
  color: #fff;
  box-shadow:
    0 12px 28px rgba(124, 92, 255, 0.32),
    0 0 22px rgba(124, 92, 255, 0.12);
}

.preset-section {
  margin-bottom: 18px;
}

.preset-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #dfe6ff;
}

.preset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}

.preset-btn {
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.07);
  background: rgba(8, 13, 30, 0.72);
  color: #eaf0ff;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: 0.22s ease;
}

.preset-btn:hover {
  transform: translateY(-2px);
  border-color: rgba(124, 92, 255, 0.25);
  box-shadow: 0 8px 20px rgba(124, 92, 255, 0.1);
  background: rgba(12, 18, 38, 0.9);
}

.helper-text {
  color: #92a0cf;
  font-size: 0.9rem;
  line-height: 1.5;
}

/* =========================
   REVEAL SCREEN
========================= */
.reveal-screen {
  position: fixed;
  inset: 0;
  background: #000;
  z-index: 1;
  touch-action: manipulation;
}

#fullCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  background: #000;
}

.reveal-overlay {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  z-index: 5;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.35s ease;
}

.reveal-overlay.show {
  opacity: 1;
}

.overlay-message {
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.82rem;
  font-weight: 600;
  backdrop-filter: blur(10px);
}

/* =========================
   STATE HELPERS
========================= */
.hidden {
  display: none !important;
}

/* =========================
   MOBILE TUNING
========================= */
@media (max-width: 768px) {
  .setup-card {
    padding: 20px;
    border-radius: 22px;
  }

  .input-row {
    flex-direction: column;
  }

  #messageInput,
  .btn {
    width: 100%;
  }

  .preset-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .setup-card h1 {
    font-size: 2rem;
  }

  .subtitle {
    font-size: 0.95rem;
  }

  .overlay-message {
    font-size: 0.76rem;
    padding: 9px 14px;
  }
}

@media (max-width: 480px) {
  .setup-screen {
    padding: 14px;
  }

  .setup-card {
    padding: 16px;
    border-radius: 18px;
  }

  .preset-grid {
    grid-template-columns: 1fr;
  }

  .brand {
    font-size: 11px;
    padding: 7px 12px;
  }

  .helper-text {
    font-size: 0.84rem;
  }

  .overlay-message {
    bottom: 16px;
  }
}