/* ---- Theme tokens per occasion ---- */
body[data-theme="birthday"] {
  --accent: #ff6f91;
  --accent-dark: #d84a6e;
  --bg-start: #fff0f4;
  --bg-end: #ffe1ec;
}

body[data-theme="holiday"] {
  --accent: #2f9e6f;
  --accent-dark: #1f7a54;
  --bg-start: #f0fbf5;
  --bg-end: #e0f5e9;
}

body[data-theme="thankyou"] {
  --accent: #d69e2e;
  --accent-dark: #b7791f;
  --bg-start: #fffaf0;
  --bg-end: #fdf0d5;
}

body[data-theme="congrats"] {
  --accent: #6b5bd6;
  --accent-dark: #4f3fb0;
  --bg-start: #f3f0ff;
  --bg-end: #e6e0fd;
}

body {
  --ink: #2b2b33;
  --ink-soft: #6b6b76;
  --surface: #ffffff;
  --radius: 16px;
  --shadow: 0 12px 30px rgba(0, 0, 0, 0.12);

  min-height: 100vh;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: linear-gradient(160deg, var(--bg-start), var(--bg-end));
  transition: background 0.4s ease;
}

.page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

/* ---- Composer form ---- */
.composer {
  width: 100%;
  max-width: 420px;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.composer__title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--accent-dark);
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-soft);
}

.field input,
.field select,
.field textarea {
  border: 1.5px solid #e2e2e8;
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 1rem;
  background: #fafafc;
  transition: border-color 0.2s ease;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.field textarea {
  resize: vertical;
}

.form-error {
  color: #c0392b;
  font-size: 0.85rem;
  font-weight: 600;
  min-height: 1.2em;
}

/* ---- Buttons ---- */
.btn {
  border-radius: 999px;
  padding: 12px 20px;
  font-size: 1rem;
  font-weight: 600;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:active {
  transform: scale(0.97);
}

.btn--primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.btn--primary:hover {
  background: var(--accent-dark);
}

.btn--secondary {
  background: transparent;
  color: var(--ink-soft);
  border: 1.5px solid #e2e2e8;
}

.btn--secondary:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
}

.btn--reveal {
  background: #fff;
  color: var(--accent-dark);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.btn--tertiary {
  background: transparent;
  color: var(--ink-soft);
  font-size: 0.85rem;
  padding: 6px 10px;
  align-self: flex-end;
  text-decoration: underline;
}

.btn--tertiary:hover {
  color: var(--accent-dark);
}

.share-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 20px;
}

.status-text {
  margin-top: 10px;
  font-size: 0.85rem;
  color: var(--ink-soft);
  max-width: 100%;
  word-break: break-all;
  text-align: center;
}

/* ---- Card stage ---- */
.card-stage {
  width: 100%;
  max-width: 420px;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

.envelope {
  width: 100%;
  aspect-ratio: 3 / 4;
  position: relative;
  perspective: 1200px;
}

.envelope__pocket {
  position: absolute;
  inset: 0;
  background: linear-gradient(145deg, var(--accent), var(--accent-dark));
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  z-index: 2;
  transition: opacity 0.4s ease 0.35s, transform 0.4s ease 0.35s;
}

.envelope__flap {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 46%;
  background: var(--accent-dark);
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  transform-origin: top center;
  z-index: 4;
  transition: transform 0.55s ease;
  backface-visibility: hidden;
}

.envelope.is-open .envelope__flap {
  transform: rotateX(-170deg);
}

.envelope.is-open .envelope__pocket {
  opacity: 0;
  transform: translateY(10px);
}

.card {
  position: absolute;
  inset: 0;
  z-index: 3;
  opacity: 0;
  transform: translateY(16px) scale(0.94);
  pointer-events: none;
  transition: opacity 0.5s ease 0.3s, transform 0.5s ease 0.3s;
}

.envelope.is-open .card {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.card__face {
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 32px;
  gap: 20px;
}

.card__face--front {
  background: linear-gradient(145deg, var(--accent), var(--accent-dark));
  color: #fff;
  z-index: 2;
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.card__face--back {
  background: var(--surface);
  color: var(--ink);
  gap: 14px;
  z-index: 1;
  opacity: 0;
  transform: scale(0.97);
  transition: opacity 0.5s ease 0.15s, transform 0.5s ease 0.15s;
}

.card.is-revealed .card__face--front {
  opacity: 0;
  transform: scale(1.03);
  pointer-events: none;
}

.card.is-revealed .card__face--back {
  opacity: 1;
  transform: scale(1);
}

.card__occasion-label {
  font-size: 1.6rem;
  font-weight: 700;
}

.card__to {
  font-weight: 700;
  color: var(--accent-dark);
}

.card__message {
  font-size: 1.05rem;
  line-height: 1.5;
  white-space: pre-wrap;
}

.card__encouragement {
  font-size: 0.9rem;
  font-style: italic;
  color: var(--accent-dark);
}

.card__from {
  font-style: italic;
  color: var(--ink-soft);
}

#confetti-canvas {
  position: fixed;
  inset: 0;
  pointer-events: none;
  width: 100vw;
  height: 100vh;
}

.field--inline {
  flex-direction: row;
  align-items: center;
  gap: 8px;
}

.field--inline label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink-soft);
}

.field--inline input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

.signature-pad {
  width: 100%;
  height: 120px;
  border: 1.5px dashed #d5d5dd;
  border-radius: 10px;
  background: #fafafc;
  touch-action: none;
  cursor: crosshair;
}

.card__signature {
  max-width: 70%;
  max-height: 90px;
  object-fit: contain;
}

/* ---- Accessibility ---- */
:focus-visible {
  outline: 2px solid var(--accent-dark, #333);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .card__face--front,
  .card__face--back,
  .envelope__flap,
  .envelope__pocket,
  .card,
  body {
    transition-duration: 0.01ms !important;
  }
}

/* ---- Responsive ---- */
@media (max-width: 480px) {
  .composer,
  .card-stage {
    max-width: 100%;
  }

  .composer {
    padding: 24px;
  }

  .card__occasion-label {
    font-size: 1.3rem;
  }
}