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

:root {
  --bg:        #0d0b14;
  --card-bg:   #1a1528;
  --card-border: #2e2650;
  --accent:    #ff6b9d;
  --accent2:   #ffd93d;
  --accent3:   #6bcb77;
  --text:      #f0eaff;
  --muted:     #7a6e99;
  --glow:      rgba(255, 107, 157, 0.35);
}

body {
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse 80% 60% at 50% -10%, rgba(120, 60, 180, 0.22), transparent),
    radial-gradient(ellipse 50% 40% at 90% 90%, rgba(255, 107, 157, 0.12), transparent);
  color: var(--text);
  font-family: 'DM Mono', monospace;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow-x: hidden;
  position: relative;
}


#confetti-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
}

/*  BALLOONS  */
.balloons {
  position: fixed;
  bottom: -80px;
  left: 0; right: 0;
  pointer-events: none;
  z-index: 1;
}

.balloon {
  position: absolute;
  left: var(--left);
  font-size: 2.2rem;
  animation: floatUp 8s ease-in var(--delay) infinite;
  opacity: 0;
  filter: drop-shadow(0 0 8px var(--clr));
}

@keyframes floatUp {
  0%   { transform: translateY(0) rotate(-5deg); opacity: 0; }
  10%  { opacity: 1; }
  80%  { opacity: 0.7; }
  100% { transform: translateY(-110vh) rotate(8deg); opacity: 0; }
}

/*  MAIN CARD  */
#parent {
  position: relative;
  z-index: 10;
  background: linear-gradient(145deg, #1a1528, #120f1f);
  border: 1px solid var(--card-border);
  border-radius: 28px;
  padding: 48px 52px 44px;
  max-width: 700px;
  width: 92%;
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.04),
    0 8px 40px rgba(0,0,0,0.6),
    0 0 80px var(--glow);
  animation: cardIn 0.9s cubic-bezier(.22,1,.36,1) both;
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(40px) scale(0.96); }
  to   { opacity: 1; transform: none; }
}

/*  HEADER */
.header {
  text-align: center;
  margin-bottom: 36px;
}

.label {
  font-size: 0.65rem;
  letter-spacing: 0.28em;
  color: var(--muted);
  margin-bottom: 10px;
}

.header h1 {
  font-family: 'Playfair Display', serif;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.15;
  margin-bottom: 8px;
  text-shadow: none;
}

.event-name {
  font-size: 0.85rem;
  color: var(--muted);
  font-style: italic;
  letter-spacing: 0.05em;
}

/*  DATE PICKER  */
.date-picker-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.date-picker-wrap label {
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

#birthdayInput {
  background: #0f0c1a;
  border: 1px solid var(--card-border);
  border-radius: 10px;
  color: var(--text);
  font-family: 'DM Mono', monospace;
  font-size: 0.88rem;
  padding: 9px 14px;
  outline: none;
  transition: border-color 0.2s;
  cursor: pointer;
}

#birthdayInput:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255,107,157,0.15);
}

#birthdayInput::-webkit-calendar-picker-indicator {
  filter: invert(0.7);
  cursor: pointer;
}

#setBtn {
  background: linear-gradient(135deg, var(--accent), #c94d7a);
  border: none;
  border-radius: 10px;
  color: #fff;
  font-family: 'DM Mono', monospace;
  font-size: 0.85rem;
  padding: 9px 20px;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  font-weight: 500;
}

#setBtn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255,107,157,0.4);
}

#setBtn:active {
  transform: translateY(0);
}

/*  COUNTDOWN GRID  */
.countdown-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 20px 22px 16px;
  min-width: 100px;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  opacity: 0.5;
}

.card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 24px rgba(255,107,157,0.2);
}

.card.flash {
  animation: flashCard 0.35s ease;
}

@keyframes flashCard {
  0%, 100% { background: var(--card-bg); }
  50%       { background: #2a1f3d; border-color: var(--accent); }
}

.num {
  display: block;
  font-family: 'Playfair Display', serif;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 900;
  color: var(--text);
  line-height: 1;
  letter-spacing: -0.02em;
  transition: transform 0.2s;
}

.num.tick {
  animation: tickNum 0.25s cubic-bezier(.22,1,.36,1);
}

@keyframes tickNum {
  0%  { transform: translateY(-8px); opacity: 0.4; }
  100%{ transform: translateY(0);    opacity: 1; }
}

.unit {
  display: block;
  font-size: 0.62rem;
  color: var(--muted);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-top: 6px;
}

.sep {
  font-family: 'Playfair Display', serif;
  font-size: 2rem;
  color: var(--muted);
  opacity: 0.5;
  align-self: flex-start;
  padding-top: 16px;
  user-select: none;
}

/*  BIRTHDAY MESSAGE  */
.birthday-msg {
  text-align: center;
  font-family: 'Playfair Display', serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent2);
  background: rgba(255, 217, 61, 0.08);
  border: 1px solid rgba(255,217,61,0.25);
  border-radius: 14px;
  padding: 16px 24px;
  margin-bottom: 28px;
  animation: pulse 1.4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0   0   rgba(255,217,61,0.3); }
  50%       { box-shadow: 0 0 20px 6px rgba(255,217,61,0.3); }
}

.hidden { display: none !important; }

/*  PROGRESS BAR  */
.progress-wrap {
  margin-top: 4px;
}

.progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.68rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}

.progress-bar-bg {
  background: #0f0c1a;
  border: 1px solid var(--card-border);
  border-radius: 99px;
  height: 8px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent2), var(--accent3));
  border-radius: 99px;
  transition: width 1s ease;
  position: relative;
}

.progress-bar-fill::after {
  content: '';
  position: absolute;
  right: 0; top: 0; bottom: 0;
  width: 30px;
  background: rgba(255,255,255,0.25);
  filter: blur(4px);
  border-radius: 99px;
}

/*  RESPONSIVE  */
@media (max-width: 560px) {
  #parent { padding: 36px 24px 32px; }
  .card   { min-width: 72px; padding: 14px 12px 12px; }
  .sep    { font-size: 1.4rem; padding-top: 12px; }
}