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

:root {
  /* Hacker palette */
  --green: #00ff41;
  --green-dim: #00aa2b;
  --green-glow: rgba(0, 255, 65, 0.35);
  --terminal-bg: #0a0a0a;

  /* Birthday palette */
  --pink:    #ff6eb4;
  --peach:   #ffb347;
  --sky:     #7ec8e3;
  --lavender:#c9b3ff;
  --cream:   #fff8f0;
  --deep:    #2d1b4e;

  /* Structural */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-card: 0 8px 32px rgba(0,0,0,0.22);
  --shadow-photo: 0 6px 24px rgba(0,0,0,0.28), 0 2px 8px rgba(0,0,0,0.15);
}

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

body {
  font-family: 'Nunito', sans-serif;
  background: #000;
  color: #fff;
  -webkit-font-smoothing: antialiased;
  touch-action: manipulation;
}

/* Screen system */
.screen {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: none;
  overflow: hidden;
}

.screen.active {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

#hacker-screen {
  background: var(--terminal-bg);
  position: relative;
  justify-content: space-between;
  padding: env(safe-area-inset-top, 20px) 0 env(safe-area-inset-bottom, 0);
}

/* Scanlines overlay */
.scanlines {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 3px,
    rgba(0, 0, 0, 0.18) 3px,
    rgba(0, 0, 0, 0.18) 4px
  );
  pointer-events: none;
  z-index: 10;
  animation: scanline-drift 8s linear infinite;
}

@keyframes scanline-drift {
  0%   { background-position: 0 0; }
  100% { background-position: 0 80px; }
}

/* CRT flicker */
.crt-flicker {
  position: absolute;
  inset: 0;
  background: transparent;
  pointer-events: none;
  z-index: 11;
  animation: crt-flicker 0.15s infinite;
}

@keyframes crt-flicker {
  0%   { opacity: 1; }
  92%  { opacity: 1; }
  93%  { opacity: 0.85; }
  94%  { opacity: 1; }
  97%  { opacity: 0.9; }
  100% { opacity: 1; }
}

/* Terminal window */
.terminal-container {
  width: min(90vw, 420px);
  border: 1px solid var(--green-dim);
  border-radius: var(--radius-sm);
  box-shadow: 0 0 30px var(--green-glow), 0 0 60px rgba(0,255,65,0.1);
  overflow: hidden;
  z-index: 5;
  flex: 1;
  display: flex;
  flex-direction: column;
  margin: 20px auto;
  max-height: calc(100vh - 120px);
}

.terminal-header {
  background: #1a1a1a;
  border-bottom: 1px solid #2a2a2a;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}
.terminal-dot.red    { background: #ff5f57; }
.terminal-dot.yellow { background: #ffbd2e; }
.terminal-dot.green  { background: #28c840; }

.terminal-title {
  font-family: 'Share Tech Mono', monospace;
  font-size: 11px;
  color: #666;
  margin-left: 8px;
  letter-spacing: 0.5px;
}

.terminal-body {
  background: var(--terminal-bg);
  padding: 18px 16px 16px;
  flex: 1;
  overflow-y: auto;
  min-height: 200px;
}

#terminal-output {
  font-family: 'Share Tech Mono', monospace;
  font-size: clamp(12px, 3.5vw, 15px);
  color: var(--green);
  line-height: 2.0;
  text-shadow: 0 0 8px var(--green-glow);
}

#terminal-output .line {
  display: block;
  animation: line-appear 0.1s ease forwards;
}

@keyframes line-appear {
  from { opacity: 0; transform: translateX(-4px); }
  to   { opacity: 1; transform: translateX(0); }
}

.cursor-line {
  display: flex;
  align-items: center;
  font-family: 'Share Tech Mono', monospace;
  font-size: clamp(12px, 3.5vw, 15px);
  color: var(--green);
  text-shadow: 0 0 8px var(--green-glow);
  margin-top: 4px;
}

.prompt {
  color: var(--green-dim);
}

#current-line {
  color: var(--green);
}

.cursor {
  animation: cursor-blink 0.8s step-end infinite;
  color: var(--green);
  text-shadow: 0 0 8px var(--green-glow);
  line-height: 1;
}

@keyframes cursor-blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* Status bar */
.status-bar {
  width: 100%;
  background: #0d0d0d;
  border-top: 1px solid #1a1a1a;
  padding: 8px 16px;
  padding-bottom: max(8px, env(safe-area-inset-bottom));
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: 'Share Tech Mono', monospace;
  font-size: 10px;
  color: var(--green-dim);
  letter-spacing: 1px;
  z-index: 5;
}

.status-item { opacity: 0.7; }

.blink-slow {
  animation: blink-slow 2s step-end infinite;
}

@keyframes blink-slow {
  0%, 100% { opacity: 0.7; }
  50%       { opacity: 0.2; }
}

#glitch-transition {
  background: var(--terminal-bg);
  z-index: 100;
  display: none;
}

#glitch-transition.active {
  display: block;
  animation: glitch-transition 0.6s forwards;
}

@keyframes glitch-transition {
  0%   { background: var(--terminal-bg); transform: none; opacity: 1; }
  10%  { transform: skewX(8deg) scaleX(1.04); filter: hue-rotate(120deg); }
  20%  { transform: skewX(-5deg); background: #001a00; }
  30%  { transform: translateX(10px) scaleX(0.98); filter: brightness(3) saturate(3); }
  40%  { transform: translateX(-8px); background: #ff00ff22; }
  50%  { transform: none; background: #fff; opacity: 1; }
  60%  { background: #ffb347; opacity: 0.8; }
  70%  { background: #ff6eb4; opacity: 0.6; }
  80%  { opacity: 0.4; }
  100% { opacity: 0; }
}

#birthday-screen {
  background: linear-gradient(145deg, #fff0f8 0%, #fff8f0 40%, #f0f4ff 100%);
  overflow-y: auto;
  overflow-x: hidden;
  display: block;
  -webkit-overflow-scrolling: touch;
}

/* Background blobs */
.blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
  animation: blob-drift 12s ease-in-out infinite alternate;
}

.blob-1 {
  width: 300px; height: 300px;
  background: var(--pink);
  top: -80px; left: -80px;
  animation-delay: 0s;
}

.blob-2 {
  width: 250px; height: 250px;
  background: var(--peach);
  top: 40%; right: -100px;
  animation-delay: -4s;
}

.blob-3 {
  width: 200px; height: 200px;
  background: var(--lavender);
  bottom: 60px; left: -60px;
  animation-delay: -8s;
}

@keyframes blob-drift {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(30px, 20px) scale(1.1); }
}

/* Confetti canvas */
#confetti-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

/* Birthday container */
.birthday-container {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
  padding: max(24px, env(safe-area-inset-top)) 16px max(24px, env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  min-height: 100vh;
}

/* Header */
.birthday-header {
  text-align: center;
  animation: reveal-up 0.7s cubic-bezier(0.34, 1.56, 0.64, 1) both;
  animation-delay: 0.1s;
}

.emoji-row {
  font-size: 20px;
  letter-spacing: 4px;
  margin-bottom: 10px;
  display: block;
}

.birthday-title {
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.15;
  margin-bottom: 12px;
}

.its-text {
  font-family: 'Nunito', sans-serif;
  font-size: clamp(18px, 5vw, 22px);
  font-weight: 700;
  color: var(--deep);
  opacity: 0.7;
  text-transform: uppercase;
  letter-spacing: 3px;
}

.friend-name {
  font-family: 'Pacifico', cursive;
  font-size: clamp(36px, 10vw, 52px);
  background: linear-gradient(135deg, var(--pink), var(--peach), var(--lavender));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 2px 8px rgba(255, 110, 180, 0.4));
  line-height: 1.1;
}

.birthday-word {
  font-family: 'Pacifico', cursive;
  font-size: clamp(28px, 8vw, 40px);
  color: var(--deep);
  position: relative;
}

.birthday-word::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 4px;
  background: linear-gradient(90deg, var(--pink), var(--peach));
  border-radius: 2px;
}

.birthday-subtitle {
  font-size: clamp(14px, 4vw, 16px);
  color: #555;
  line-height: 1.5;
  padding: 0 8px;
}

.birthday-subtitle strong {
  color: var(--pink);
  font-weight: 900;
}

/* Photobooth strip */
.photobooth-wrapper {
  width: 100%;
  display: flex;
  justify-content: center;
  animation: reveal-up 0.7s cubic-bezier(0.34, 1.56, 0.64, 1) both;
  animation-delay: 0.3s;
}

.photobooth-strip {
  background: linear-gradient(175deg, #1a1a1a 0%, #0d0d0d 100%);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  width: min(260px, 68vw);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  box-shadow:
    0 20px 60px rgba(0,0,0,0.35),
    0 4px 16px rgba(0,0,0,0.2),
    inset 0 1px 0 rgba(255,255,255,0.05);
  position: relative;
}

.photo-label-top,
.photo-label-bottom {
  font-family: 'Share Tech Mono', monospace;
  font-size: 10px;
  color: rgba(255,255,255,0.45);
  letter-spacing: 1.5px;
  text-align: center;
  padding: 6px 0;
  text-transform: uppercase;
}

/* Individual photo frames */
.photo-frame {
  background: #fff;
  padding: 8px 8px 28px;
  width: 100%;
  box-shadow: var(--shadow-photo);
  transform: rotate(var(--rot, 0deg));
  transition: transform 0.2s ease;
  animation: photo-drop 0.5s cubic-bezier(0.34, 1.4, 0.64, 1) both;
  animation-delay: var(--delay, 0s);
  margin: 6px 0;
  position: relative;
  cursor: pointer;
}

.photo-frame:hover {
  transform: rotate(0deg) scale(1.03);
  z-index: 10;
}

@keyframes photo-drop {
  from {
    opacity: 0;
    transform: rotate(var(--rot, 0deg)) translateY(-20px) scale(0.92);
  }
  to {
    opacity: 1;
    transform: rotate(var(--rot, 0deg)) translateY(0) scale(1);
  }
}

.photo-frame img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
  background: linear-gradient(135deg, #ffd6e8, #ffecd2);
}

/* Placeholder style when no image loads */
.photo-frame img::before {
  content: '📷';
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  width: 100%;
  aspect-ratio: 1/1;
  background: linear-gradient(135deg, #ffd6e8, #ffecd2);
}

.photo-caption {
  position: absolute;
  bottom: 6px;
  left: 0;
  right: 0;
  text-align: center;
  font-family: 'Share Tech Mono', monospace;
  font-size: 9px;
  color: #888;
  letter-spacing: 0.5px;
  padding: 0 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* CTA section */
.cta-section {
  text-align: center;
  animation: reveal-up 0.7s cubic-bezier(0.34, 1.56, 0.64, 1) both;
  animation-delay: 0.5s;
  width: 100%;
  max-width: 280px;
}

.wish-button {
  position: relative;
  width: 100%;
  padding: 18px 32px;
  border: none;
  border-radius: 100px;
  background: linear-gradient(135deg, #ff6eb4 0%, #ff9a5c 50%, #ffb347 100%);
  background-size: 200% 200%;
  color: #fff;
  font-family: 'Nunito', sans-serif;
  font-size: clamp(16px, 4.5vw, 18px);
  font-weight: 900;
  cursor: pointer;
  overflow: hidden;
  box-shadow:
    0 8px 24px rgba(255, 110, 180, 0.5),
    0 2px 8px rgba(0,0,0,0.15);
  animation: btn-pulse 2.5s ease-in-out infinite;
  -webkit-tap-highlight-color: transparent;
  letter-spacing: 0.5px;
}

.wish-button:active {
  transform: scale(0.96);
  box-shadow: 0 4px 12px rgba(255, 110, 180, 0.4);
}

@keyframes btn-pulse {
  0%, 100% {
    box-shadow: 0 8px 24px rgba(255, 110, 180, 0.5), 0 2px 8px rgba(0,0,0,0.15);
    background-position: 0% 50%;
  }
  50% {
    box-shadow: 0 12px 36px rgba(255, 110, 180, 0.7), 0 4px 16px rgba(0,0,0,0.15);
    background-position: 100% 50%;
  }
}

.btn-shimmer {
  position: absolute;
  top: 0; left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255,255,255,0.35),
    transparent
  );
  animation: shimmer 3s ease-in-out infinite;
  animation-delay: 1s;
}

@keyframes shimmer {
  0%   { left: -100%; }
  60%  { left: 150%; }
  100% { left: 150%; }
}

.cta-note {
  font-size: 12px;
  color: #888;
  margin-top: 10px;
  font-style: italic;
}

/* Footer */
.birthday-footer {
  text-align: center;
  animation: reveal-up 0.7s ease both;
  animation-delay: 0.7s;
  padding-bottom: 8px;
}

.bottom-emojis { margin-bottom: 8px; }

.footer-text {
  font-size: 12px;
  color: #aaa;
  font-style: italic;
}

/* Shared reveal animation */
@keyframes reveal-up {
  from {
    opacity: 0;
    transform: translateY(28px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.popup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.popup-overlay.active {
  display: flex;
  animation: overlay-in 0.3s ease;
}

@keyframes overlay-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.popup-box {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  max-width: 320px;
  width: 100%;
  text-align: center;
  box-shadow: 0 24px 64px rgba(0,0,0,0.3);
  animation: popup-bounce 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes popup-bounce {
  from { transform: scale(0.7) translateY(40px); opacity: 0; }
  to   { transform: scale(1) translateY(0); opacity: 1; }
}

.popup-emoji {
  font-size: 56px;
  margin-bottom: 12px;
  animation: emoji-shake 0.5s ease 0.3s both;
  display: inline-block;
}

@keyframes emoji-shake {
  0%, 100% { transform: rotate(0); }
  20%  { transform: rotate(-10deg); }
  40%  { transform: rotate(10deg); }
  60%  { transform: rotate(-8deg); }
  80%  { transform: rotate(6deg); }
}

.popup-title {
  font-family: 'Nunito', sans-serif;
  font-weight: 900;
  font-size: 24px;
  color: var(--deep);
  margin-bottom: 12px;
}

.popup-message {
  font-size: 15px;
  color: #555;
  line-height: 1.6;
  margin-bottom: 24px;
}

.popup-message strong {
  color: var(--pink);
}

.popup-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.popup-btn {
  display: block;
  width: 100%;
  padding: 14px 24px;
  border-radius: 100px;
  font-family: 'Nunito', sans-serif;
  font-weight: 800;
  font-size: 15px;
  cursor: pointer;
  text-decoration: none;
  border: none;
  transition: transform 0.15s, box-shadow 0.15s;
  -webkit-tap-highlight-color: transparent;
}

.popup-btn:active {
  transform: scale(0.96);
}

.popup-btn.primary {
  background: linear-gradient(135deg, #25D366, #128C7E);
  color: #fff;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
}

.popup-btn.secondary {
  background: #f5f5f5;
  color: #888;
  font-size: 13px;
}

.music-toggle {
  position: fixed;
  top: max(20px, env(safe-area-inset-top));
  right: 16px;
  z-index: 50;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: none;
  border-radius: 50%;
  width: 44px;
  height: 44px;
  font-size: 20px;
  cursor: pointer;
  box-shadow: 0 2px 12px rgba(0,0,0,0.12);
  display: none;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s;
  -webkit-tap-highlight-color: transparent;
}

.music-toggle:active { transform: scale(0.9); }
.music-toggle.visible { display: flex; }

@media (min-width: 480px) {
  .birthday-container {
    padding-top: 32px;
    padding-bottom: 32px;
  }
}

@media (max-height: 700px) {
  .birthday-container { gap: 16px; }
  .photobooth-strip { padding: 12px 16px; }
  .photo-frame { margin: 4px 0; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}