/* ============================================
   Tokens
   ============================================ */
:root {
  --blue-deep:  #142552;
  --blue:       #2A4FCB;
  --blue-soft:  #3E63E0;
  --blue-bright:#6C8CFF;
  --sky:        #EEF3FF;
  --sky-dim:    #D6E2FB;
  --ink:        #1E2A55;
  --ink-soft:   #3A4878;
  --yellow:     #FFC93C;
  --yellow-dim: #E0A92B;
  --coral:      #FF6651;
  --coral-dim:  #E1492F;

  --font-display: 'Fredoka', sans-serif;
  --font-body:    'Nunito', -apple-system, BlinkMacSystemFont, sans-serif;

  --card-radius: 26px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100svh;
  background: var(--blue-deep);
  color: var(--sky);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

p, h1 { margin: 0; }
ul { list-style: none; margin: 0; padding: 0; }

:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 4px;
}

/* ============================================
   Stage
   ============================================ */
.stage {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  padding: 2rem 1.25rem;
  background:
    radial-gradient(ellipse 85% 55% at 50% 8%, var(--blue-soft) 0%, var(--blue-deep) 60%, #0B1638 100%);
}

.stage__footer {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--blue-bright);
  text-align: center;
}

/* ============================================
   Card scene + flip mechanics
   ============================================ */
.card-scene {
  position: relative;
  width: min(94vw, 700px);
  height: min(84svh, 640px);
  min-height: 480px;
  perspective: 2200px;
}

.card-face {
  position: absolute;
  inset: 0;
  border-radius: var(--card-radius);
}

.card-flap {
  appearance: none;
  border: none;
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
  z-index: 2;
  cursor: pointer;
  font: inherit;
  color: inherit;
  text-align: inherit;
  transform-origin: left center;
  transform: rotateY(0deg) translateZ(1px);
  transition: transform 1.1s cubic-bezier(.65,.05,.36,1);
  border-radius: var(--card-radius);
  box-shadow: 0 30px 60px -20px rgba(10,20,60,0.55), 0 0 0 1px rgba(108,140,255,0.18);
  backface-visibility: hidden;
}

.card-scene.is-open .card-flap {
  transform: rotateY(-152deg) translateZ(1px);
  pointer-events: none;
  box-shadow: 0 10px 30px -10px rgba(10,20,60,0.4);
}

@media (prefers-reduced-motion: reduce) {
  .card-flap { transition: none; }
}

/* ----- Front cover ----- */
.card-cover {
  background:
    radial-gradient(ellipse 90% 70% at 50% 0%, var(--blue-soft) 0%, var(--blue) 55%, var(--blue-deep) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
  overflow: hidden;
}

.cover__mark {
  position: absolute;
  top: 46%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(14rem, 60vw, 22rem);
  color: var(--blue-bright);
  opacity: 0.13;
  line-height: 1;
  pointer-events: none;
}

.eyebrow {
  position: relative;
  font-family: var(--font-body);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--yellow);
  margin-bottom: 1rem;
}

.cover__title {
  position: relative;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.2rem, 8vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: #FFFFFF;
}

.cover__underline {
  display: block;
  width: clamp(140px, 30vw, 230px);
  height: 18px;
  margin: 0.6rem auto 0;
}
.cover__underline path {
  fill: none;
  stroke: var(--yellow);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-dasharray: 360;
  stroke-dashoffset: 360;
  animation: draw-underline 1.3s 0.6s cubic-bezier(.65,.05,.36,1) forwards;
}
@keyframes draw-underline { to { stroke-dashoffset: 0; } }
@media (prefers-reduced-motion: reduce) {
  .cover__underline path { stroke-dashoffset: 0; animation: none; }
}

.cover__hint {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1.75rem;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--sky-dim);
  animation: hint-pulse 2.4s ease-in-out infinite;
}
.cover__hint-arrow { font-size: 1rem; color: var(--yellow); }
@keyframes hint-pulse {
  0%, 100% { opacity: 0.65; transform: translateY(0); }
  50% { opacity: 1; transform: translateY(3px); }
}
@media (prefers-reduced-motion: reduce) {
  .cover__hint { animation: none; opacity: 0.9; }
}

/* ----- Sticker badge (signature element) ----- */
.sticker {
  position: absolute;
  top: 1.1rem;
  right: 1.1rem;
  width: 104px;
  height: 104px;
  z-index: 1;
  transform: rotate(-11deg);
  filter: drop-shadow(0 6px 10px rgba(10,20,60,0.45));
  animation: sticker-wobble 5s ease-in-out infinite;
}
@keyframes sticker-wobble {
  0%, 100% { transform: rotate(-11deg); }
  50% { transform: rotate(-6deg); }
}
@media (prefers-reduced-motion: reduce) {
  .sticker { animation: none; }
}
.sticker__burst {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.sticker__burst polygon {
  fill: var(--yellow);
  stroke: var(--yellow-dim);
  stroke-width: 1;
  stroke-linejoin: round;
}
.sticker__text {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.74rem;
  line-height: 1.15;
  letter-spacing: 0.01em;
  color: var(--coral-dim);
}

/* ----- Inside ----- */
.card-inside {
  position: absolute;
  inset: 0;
  border-radius: var(--card-radius);
  background: var(--sky);
  color: var(--ink-soft);
  z-index: 1;
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(42,79,203,0.12);
}

.close-btn {
  position: absolute;
  top: 0.9rem;
  right: 0.9rem;
  z-index: 3;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--blue);
  background: #FFFFFF;
  color: var(--blue);
  font-size: 1.05rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 0.4s ease 0.5s, transform 0.4s ease 0.5s, background 0.2s ease;
}
.close-btn:hover { background: var(--sky-dim); }
.card-scene.is-open .close-btn {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
}

.inside__scroll {
  height: 100%;
  overflow-y: auto;
  display: flex;
  padding: 2.5rem 2rem;
  gap: 2rem;
}

.inside__col {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.inside__divider {
  width: 2px;
  flex-shrink: 0;
  background: repeating-linear-gradient(to bottom, var(--sky-dim) 0 8px, transparent 8px 16px);
}

.inside__greeting {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.6rem;
  color: var(--coral);
  margin-bottom: 0.9rem;
}

.inside__para {
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.7;
  color: var(--ink-soft);
  margin-bottom: 1.4rem;
}

/* ----- Joke block ----- */
.joke {
  background: #FFFFFF;
  border: 2px dashed var(--blue-bright);
  border-radius: 16px;
  padding: 1rem 1.1rem;
  margin-bottom: 1.4rem;
}
.joke__label {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 0.4rem;
}
.joke__setup {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.7rem;
}
.joke__btn {
  appearance: none;
  border: none;
  border-radius: 999px;
  background: var(--yellow);
  color: var(--coral-dim);
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 0.85rem;
  padding: 0.5rem 1rem;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
}
.joke__btn:hover { background: var(--yellow-dim); transform: scale(1.04); }
.joke__btn:active { transform: scale(0.97); }
.joke__punchline {
  margin-top: 0.7rem;
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--coral-dim);
  animation: punchline-pop 0.4s cubic-bezier(.34,1.56,.64,1);
}
@keyframes punchline-pop {
  0% { opacity: 0; transform: scale(0.85) translateY(4px); }
  100% { opacity: 1; transform: scale(1) translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .joke__punchline { animation: none; }
}

.resume {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  margin-bottom: 1.5rem;
}
.resume li {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--ink);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.resume__note {
  font-weight: 600;
  font-size: 0.82rem;
  color: var(--blue);
}

.inside__signoff {
  margin-top: auto;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink-soft);
}
.inside__signoff strong {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.3rem;
  color: var(--coral);
}

.gift__eyebrow {
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 0.4rem;
}

.gift__heading {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.35rem;
  line-height: 1.25;
  margin-bottom: 1.1rem;
  color: var(--ink);
}

.gift__photo {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 14px 30px -12px rgba(20,37,82,0.35);
  transform: rotate(-2deg);
  margin-bottom: 1.1rem;
  border: 4px solid #FFFFFF;
}
.gift__photo img {
  display: block;
  width: 100%;
  height: auto;
}
.gift__badge {
  position: absolute;
  bottom: 0.6rem;
  right: 0.6rem;
  background: var(--yellow);
  color: var(--coral-dim);
  font-size: 0.72rem;
  font-weight: 800;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

.gift__caption {
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* ----- Confetti burst ----- */
.confetti {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 4;
  overflow: hidden;
}
.confetti span {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: var(--blue);
  opacity: 0;
}
.confetti.burst span {
  animation: confetti-pop 0.9s ease-out forwards;
}
.confetti span:nth-child(odd) { background: var(--coral); }
.confetti span:nth-child(3n) { background: var(--yellow); border-radius: 50%; }

@keyframes confetti-pop {
  0% { opacity: 1; transform: translate(-50%, -50%) scale(1) rotate(0deg); }
  100% { opacity: 0; transform: translate(var(--tx), var(--ty)) scale(0.4) rotate(var(--tr)); }
}

@media (prefers-reduced-motion: reduce) {
  .confetti.burst span { animation: none; opacity: 0; }
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 640px) {
  .inside__scroll {
    flex-direction: column;
    padding: 2.25rem 1.5rem;
    gap: 1.75rem;
  }
  .inside__divider {
    width: auto;
    height: 2px;
    background: repeating-linear-gradient(to right, var(--sky-dim) 0 8px, transparent 8px 16px);
  }
  .card-scene { height: min(88svh, 720px); }
  .sticker { width: 84px; height: 84px; top: 0.8rem; right: 0.8rem; }
  .sticker__text { font-size: 0.62rem; }
}