/* CSS Variables for theming */
:root {
  --bg: #0a0a0a;
  --text: #fafafa;
  --text-muted: #666;
  --transition-speed: 0.3s;
  --slot-min-height: 120px;
  --animation-duration: 0.8s;
}

[data-theme="light"] {
  --bg: #fafafa;
  --text: #0a0a0a;
  --text-muted: #999;
}

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

html {
  font-size: 16px;
}

/* Text selection styling */
::selection {
  background: var(--text);
  color: var(--bg);
}

::-moz-selection {
  background: var(--text);
  color: var(--bg);
}

body {
  font-family: 'Space Mono', monospace;
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;
  min-height: 100dvh;
  transition: background-color var(--transition-speed), color var(--transition-speed);
  overflow: hidden;
}

/* Layout */
.container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

/* Header */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 2rem;
}

h1 {
  font-size: clamp(0.9rem, 2.5vw, 1.2rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  opacity: 0.7;
}

/* Header Buttons */
.header-buttons {
  display: flex;
  gap: 0.75rem;
}

/* Theme Toggle */
#theme-toggle,
#sound-toggle {
  background: none;
  border: 1px solid var(--text-muted);
  border-radius: 50%;
  width: 44px;
  height: 44px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition-speed), transform 0.2s;
  position: relative;
  user-select: none;
  -webkit-user-select: none;
}

#theme-toggle:hover,
#sound-toggle:hover {
  border-color: var(--text);
  transform: scale(1.05);
}

#theme-toggle .sun,
#theme-toggle .moon,
#sound-toggle .sound-on,
#sound-toggle .sound-off {
  font-size: 1.3rem;
  position: absolute;
  transition: opacity var(--transition-speed), transform var(--transition-speed);
  color: var(--text);
}

#theme-toggle .sun {
  opacity: 0;
  transform: rotate(-90deg);
}

#theme-toggle .moon {
  opacity: 1;
  transform: rotate(0deg);
}

[data-theme="light"] #theme-toggle .sun {
  opacity: 1;
  transform: rotate(0deg);
}

[data-theme="light"] #theme-toggle .moon {
  opacity: 0;
  transform: rotate(90deg);
}

/* Sound Toggle */
#sound-toggle .sound-on {
  opacity: 1;
}

#sound-toggle .sound-off {
  opacity: 0;
}

#sound-toggle.muted .sound-on {
  opacity: 0;
}

#sound-toggle.muted .sound-off {
  opacity: 1;
}

/* Main / Slot Machine */
main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.slot-machine {
  width: 100%;
  text-align: center;
}

.slot-window {
  overflow: hidden;
  min-height: var(--slot-min-height);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Each idea - uses relative positioning for natural height */
.idea {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(1.5rem, 5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  padding: 1rem;
  letter-spacing: -0.03em;
  text-align: center;
}

/* For animation, we need absolute positioning */
.idea.entering,
.idea.leaving {
  position: absolute;
  top: 0;
  left: 0;
  min-height: var(--slot-min-height);
}

/* Current idea - visible */
.idea.current {
  transform: translateY(0);
}

/* Outgoing idea - slides down and out */
.idea.leaving {
  animation: slideDown var(--animation-duration) cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* Incoming idea - starts above, slides down into view */
.idea.entering {
  transform: translateY(-100%);
  animation: slideInFromTop var(--animation-duration) cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes slideDown {
  0% {
    transform: translateY(0);
    opacity: 1;
  }
  100% {
    transform: translateY(100%);
    opacity: 0.3;
  }
}

@keyframes slideInFromTop {
  0% {
    transform: translateY(-100%);
    opacity: 0.3;
  }
  40% {
    opacity: 1;
  }
  /* Overshoot slightly */
  75% {
    transform: translateY(4%);
  }
  /* Bounce back */
  90% {
    transform: translateY(-1%);
  }
  100% {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Footer */
footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding-top: 2rem;
}

.made-with-love {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Desperate Mode Indicator */
.desperate-indicator {
  font-size: 0.7rem;
  color: var(--text);
  opacity: 0;
  transition: opacity 0.3s;
  user-select: none;
  -webkit-user-select: none;
}

.desperate-indicator.visible {
  opacity: 0.8;
}

/* Desperate Mode Button - hidden, auto-activates at 50 ideas */
.desperate-mode {
  display: none;
}

/* Toast Notification */
.toast-container {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  pointer-events: none;
}

.toast {
  background: var(--text);
  color: var(--bg);
  padding: 0.75rem 1.25rem;
  border-radius: 4px;
  font-size: 0.85rem;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.3s, transform 0.3s;
  max-width: 90vw;
  text-align: center;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* Achievement Popup */
.achievement-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.achievement-overlay.show {
  opacity: 1;
  pointer-events: auto;
}

.achievement-popup {
  background: var(--bg);
  border: 1px solid var(--text-muted);
  padding: 2rem;
  text-align: center;
  max-width: 400px;
  transform: scale(0.9);
  transition: transform 0.3s;
}

.achievement-overlay.show .achievement-popup {
  transform: scale(1);
}

.achievement-badge {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.achievement-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.achievement-message {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.achievement-dismiss {
  background: none;
  border: 1px solid var(--text-muted);
  color: var(--text);
  padding: 0.5rem 1rem;
  font-family: 'Space Mono', monospace;
  font-size: 0.75rem;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}

.achievement-dismiss:hover {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

/* Confetti Canvas */
#confetti-canvas {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1999;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .idea.leaving,
  .idea.entering {
    animation: none;
  }

  .idea.leaving {
    opacity: 0;
  }

  .idea.entering {
    transform: translateY(0);
    opacity: 1;
  }

  #theme-toggle .sun,
  #theme-toggle .moon {
    transition: opacity var(--transition-speed);
  }
}

/* Mobile adjustments */
@media (max-width: 600px) {
  :root {
    --slot-min-height: 100px;
  }

  .container {
    padding: 1.5rem;
  }

  .idea {
    font-size: clamp(1.2rem, 6vw, 1.8rem);
  }
}

/* ===== EASTER EGG STYLES ===== */

/* Retro Mode (Konami Code) */
.retro-mode {
  --bg: #000;
  --text: #00ff00;
  --text-muted: #006600;
}

.retro-mode body,
body.retro-mode {
  background-color: #000 !important;
  color: #00ff00 !important;
}

.retro-mode .idea {
  text-shadow: 0 0 10px #00ff00;
}

.retro-mode::after {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.15),
    rgba(0, 0, 0, 0.15) 1px,
    transparent 1px,
    transparent 2px
  );
  pointer-events: none;
  z-index: 9999;
}

.retro-mode .toast {
  background: #00ff00;
  color: #000;
  border: 1px solid #00ff00;
  text-shadow: none;
}

.retro-mode #theme-toggle,
.retro-mode #sound-toggle {
  border-color: #006600;
}

.retro-mode #theme-toggle:hover,
.retro-mode #sound-toggle:hover {
  border-color: #00ff00;
}

.retro-mode #theme-toggle .sun,
.retro-mode #theme-toggle .moon,
.retro-mode #sound-toggle .sound-on,
.retro-mode #sound-toggle .sound-off {
  color: #00ff00;
}

.retro-mode .achievement-popup {
  background: #000;
  border-color: #00ff00;
}

.retro-mode .achievement-dismiss {
  border-color: #00ff00;
  color: #00ff00;
}

.retro-mode .achievement-dismiss:hover {
  background: #00ff00;
  color: #000;
}

/* Header clickable cursor */
h1 {
  cursor: pointer;
  user-select: none;
}

/* Footer - non-selectable and clickable */
.made-with-love {
  transition: opacity 0.2s;
  user-select: none;
  -webkit-user-select: none;
}

footer {
  user-select: none;
  -webkit-user-select: none;
}

.desperate-mode {
  user-select: none;
  -webkit-user-select: none;
}