/* ---------------------------------------------------------
   ASILI DONUT PLAYGROUND 3.0 — ZEN MODE
   Espresso + Gold Theme
--------------------------------------------------------- */

:root {
  --espresso-dark: #1b1412;
  --espresso-mid: #3b2f2f;
  --gold: #c6a667;
  --gold-soft: rgba(198, 166, 103, 0.4);
  --cream: #f5eee5;
  --cream-muted: #b9a89a;
  --panel-bg: rgba(18, 12, 10, 0.88);
  --panel-border: rgba(198, 166, 103, 0.5);
  --button-bg: rgba(59, 47, 47, 0.9);
  --button-bg-active: rgba(198, 166, 103, 0.18);
  --button-border: rgba(198, 166, 103, 0.7);
  --shadow-strong: 0 0 25px rgba(198, 166, 103, 0.45);
  --radius-soft: 14px;
  --transition-fast: 0.18s ease;
  --transition-slow: 0.6s ease;
}

/* RESET */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  overflow: hidden;
  font-family: "Poppins", system-ui, sans-serif;
  background: radial-gradient(circle at top, var(--espresso-mid), var(--espresso-dark));
  color: var(--cream);
}

/* ---------------------------------------------------------
   LOADING SCREEN
--------------------------------------------------------- */

#loading-screen {
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at center, var(--espresso-mid), var(--espresso-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  animation: fadeOut 1s ease forwards;
  animation-delay: 2.8s;
}

.loading-inner {
  text-align: center;
  opacity: 0;
  animation: fadeIn 1.2s ease forwards;
}

.loading-logo {
  margin-bottom: 1rem;
}

.donut-ring {
  width: 90px;
  height: 90px;
  border: 10px solid var(--gold);
  border-radius: 50%;
  margin: 0 auto 0.5rem;
  position: relative;
  animation: spin 2.6s linear infinite;
}

.donut-inner {
  width: 30px;
  height: 30px;
  background: var(--espresso-dark);
  border-radius: 50%;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.logo-mark {
  font-size: 1.6rem;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.logo-sub {
  font-size: 0.9rem;
  color: var(--cream-muted);
}

.loading-text {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--cream-muted);
}

.loading-spinner {
  width: 26px;
  height: 26px;
  border: 3px solid var(--gold-soft);
  border-top-color: var(--gold);
  border-radius: 50%;
  margin: 1rem auto 0;
  animation: spin 1.2s linear infinite;
}

/* ---------------------------------------------------------
   INTRO OVERLAY
--------------------------------------------------------- */

#intro-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 10, 10, 0.75);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9000;
  opacity: 0;
  animation: introFadeIn 1.2s ease forwards;
  animation-delay: 3.2s;
}

.intro-card {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  padding: 2rem 2.4rem;
  border-radius: 18px;
  text-align: center;
  box-shadow: var(--shadow-strong);
  max-width: 420px;
}

.intro-title {
  font-size: 1.4rem;
  margin-bottom: 0.6rem;
  color: var(--gold);
}

.intro-subtitle {
  font-size: 0.9rem;
  color: var(--cream-muted);
  margin-bottom: 1.4rem;
}

.intro-button {
  background: var(--button-bg);
  border: 1px solid var(--button-border);
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-soft);
  color: var(--cream);
  cursor: pointer;
  transition: var(--transition-fast);
}

.intro-button:hover {
  background: var(--button-bg-active);
  box-shadow: var(--shadow-strong);
}

/* ---------------------------------------------------------
   UI PANEL
--------------------------------------------------------- */

#ui {
  position: fixed;
  top: 1.2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 500;
  pointer-events: none;
}

.brand-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  pointer-events: auto;
  padding: 0.4rem 0.8rem;
  margin-bottom: 0.5rem;
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 14px;
  backdrop-filter: blur(12px);
}

.brand-logo-mark {
  font-size: 0.9rem;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.brand-tagline {
  font-size: 0.7rem;
  color: var(--cream-muted);
}

.brand-badge {
  font-size: 0.7rem;
  color: var(--gold);
}

.controls {
  pointer-events: auto;
  background: var(--panel-bg);
  border-radius: 18px;
  border: 1px solid var(--panel-border);
  padding: 0.9rem 1.2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  align-items: center;
  box-shadow: var(--shadow-strong);
  backdrop-filter: blur(14px);
  max-width: 960px;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 120px;
}

.control-group label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--cream-muted);
}

.toggle,
.action {
  border-radius: var(--radius-soft);
  border: 1px solid var(--button-border);
  background: var(--button-bg);
  color: var(--cream);
  padding: 0.35rem 0.8rem;
  font-size: 0.8rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.toggle.active,
.action:hover {
  background: var(--button-bg-active);
  box-shadow: var(--shadow-strong);
}

.toggle.inactive {
  color: var(--cream-muted);
  border-color: rgba(198, 166, 103, 0.25);
}

#ambience-select {
  border-radius: var(--radius-soft);
  border: 1px solid var(--button-border);
  background: var(--button-bg);
  color: var(--cream);
  padding: 0.35rem 0.6rem;
  font-size: 0.8rem;
  cursor: pointer;
}

.hint {
  flex: 1 1 100%;
  font-size: 0.7rem;
  color: var(--cream-muted);
}

/* ---------------------------------------------------------
   CANVAS
--------------------------------------------------------- */

#playground {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  display: block;
}

/* ---------------------------------------------------------
   ANIMATIONS
--------------------------------------------------------- */

@keyframes fadeIn {
  to {
    opacity: 1;
  }
}

@keyframes fadeOut {
  to {
    opacity: 0;
    visibility: hidden;
  }
}

@keyframes introFadeIn {
  to {
    opacity: 1;
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ---------------------------------------------------------
   MOBILE
--------------------------------------------------------- */

@media (max-width: 720px) {
  #ui {
    top: auto;
    bottom: 0.75rem;
    width: 100%;
    padding: 0 0.75rem;
  }

  .controls {
    padding: 0.7rem 0.8rem;
    border-radius: 16px;
    gap: 0.5rem 0.75rem;
  }

  .brand-bar {
    display: none;
  }

  .control-group {
    min-width: 46%;
  }

  .hint {
    font-size: 0.65rem;
  }
}