/* ─── Design tokens ─── */
:root {
  --color-main: #ffc5d3;
  --color-accent: #f8c5fa;
  --color-deep: #e8a4b8;
  --color-text: #5c3d4a;
  --color-text-soft: #8b6574;
  --color-white: #fffbfc;
  --color-shadow: rgba(92, 61, 74, 0.12);
  --font-display: "Cormorant Garamond", Georgia, serif;
  --font-body: "Quicksand", system-ui, sans-serif;
  --radius-lg: 1.25rem;
  --radius-pill: 999px;
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100dvh;
  font-family: var(--font-body);
  color: var(--color-text);
  background: linear-gradient(
    145deg,
    var(--color-white) 0%,
    var(--color-main) 35%,
    var(--color-accent) 70%,
    #fce8f5 100%
  );
  background-attachment: fixed;
  overflow-x: hidden;
}

/* ─── Homepage layout ─── */
.page-home {
  display: flex;
  flex-direction: column;
  position: relative;
}

.heart-field {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.floating-heart {
  position: absolute;
  pointer-events: auto;
  cursor: default;
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  line-height: 1;
  opacity: 0.55;
  filter: drop-shadow(0 2px 6px var(--color-shadow));
  animation: float-up linear infinite;
  transition: opacity var(--transition), transform var(--transition);
  user-select: none;
}

.floating-heart:hover,
.floating-heart:focus-visible {
  opacity: 1;
  transform: scale(1.35) !important;
  z-index: 10;
}

.floating-heart .heart-tooltip {
  position: absolute;
  bottom: calc(100% + 0.5rem);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  padding: 0.4rem 0.75rem;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
  color: var(--color-text);
  background: var(--color-white);
  border: 1px solid var(--color-main);
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 16px var(--color-shadow);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  pointer-events: none;
}

.floating-heart:hover .heart-tooltip,
.floating-heart:focus-visible .heart-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

@keyframes float-up {
  0% {
    transform: translateY(110vh) rotate(0deg);
  }
  100% {
    transform: translateY(-15vh) rotate(360deg);
  }
}

.site-header {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: flex-end;
  padding: 1.25rem 1.5rem;
}

.btn-letters {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--color-text);
  background: var(--color-white);
  border: 2px solid var(--color-main);
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 20px var(--color-shadow);
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn-letters:hover,
.btn-letters:focus-visible {
  background: var(--color-main);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--color-shadow);
  outline: none;
}

.home-main {
  position: relative;
  z-index: 1;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 1.5rem 6rem;
}

/* ─── Polaroid photo ─── */
.polaroid-section {
  width: 100%;
  max-width: 22rem;
  display: flex;
  justify-content: center;
  animation: fade-in 1s ease 0.2s both;
}

.polaroid {
  --polaroid-border-side: 0.75rem;
  --polaroid-border-bottom: 3.5rem;
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  width: min(100%, 20rem);
  margin: 0;
  padding: var(--polaroid-border-side) var(--polaroid-border-side) 0;
  cursor: pointer;
  text-align: left;
  background: #ffffff;
  border: none;
  border-radius: 2px;
  box-shadow:
    0 1px 2px rgba(60, 40, 50, 0.06),
    0 6px 16px rgba(60, 40, 50, 0.12),
    0 18px 36px rgba(60, 40, 50, 0.18),
    0 28px 56px rgba(92, 61, 74, 0.14);
  transform: rotate(-1.5deg);
  transition: box-shadow var(--transition), transform var(--transition);
  -webkit-tap-highlight-color: transparent;
}

.polaroid:hover {
  box-shadow:
    0 2px 4px rgba(60, 40, 50, 0.08),
    0 10px 22px rgba(60, 40, 50, 0.14),
    0 22px 44px rgba(60, 40, 50, 0.2),
    0 32px 64px rgba(92, 61, 74, 0.16);
}

.polaroid:active {
  transform: rotate(-1.5deg) scale(0.99);
}

.polaroid:focus-visible {
  outline: 2px solid var(--color-deep);
  outline-offset: 4px;
}

.polaroid-photo-area {
  display: block;
  overflow: hidden;
  background: #f0f0f0;
  line-height: 0;
}

.polaroid-img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  pointer-events: none;
  user-select: none;
}

.polaroid-footer {
  display: block;
  flex-shrink: 0;
  height: var(--polaroid-border-bottom);
  margin: 0 calc(-1 * var(--polaroid-border-side));
  margin-top: var(--polaroid-border-side);
  background: #ffffff;
}

.timer-panel {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  z-index: 2;
  padding: 1rem 1.25rem;
  background: rgba(255, 251, 252, 0.92);
  backdrop-filter: blur(10px);
  border: 2px solid var(--color-main);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 32px var(--color-shadow);
  animation: fade-in 1s ease 0.5s both;
}

.timer-label {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-style: italic;
  color: var(--color-text-soft);
  text-align: center;
  margin-bottom: 0.5rem;
}

.timer-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(3rem, 1fr));
  gap: 0.5rem 0.75rem;
}

.timer-unit {
  text-align: center;
}

.timer-value {
  display: block;
  font-family: var(--font-body);
  font-size: clamp(1.1rem, 3vw, 1.45rem);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.timer-name {
  display: block;
  font-size: 0.65rem;
  font-weight: 500;
  text-transform: lowercase;
  letter-spacing: 0.06em;
  color: var(--color-text-soft);
}

@keyframes fade-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ─── Letters page ─── */
.page-letters {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}

.letters-header {
  position: sticky;
  top: 0;
  z-index: 10;
  padding: 1rem 1.25rem;
  background: linear-gradient(
    to bottom,
    rgba(255, 251, 252, 0.95) 70%,
    transparent
  );
  backdrop-filter: blur(6px);
}

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1rem 0.55rem 0.75rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  color: var(--color-text);
  background: var(--color-white);
  border: 2px solid var(--color-main);
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 16px var(--color-shadow);
  transition: background var(--transition), transform var(--transition);
}

.btn-back:hover,
.btn-back:focus-visible {
  background: var(--color-main);
  transform: translateX(-3px);
  outline: none;
}

.btn-back-icon {
  width: 1.1rem;
  height: 1.1rem;
}

.letters-main {
  flex: 1;
  display: flex;
  justify-content: center;
  padding: 0.5rem 1.25rem 3rem;
}

.letter-card {
  width: 100%;
  max-width: 42rem;
  padding: clamp(1.75rem, 5vw, 2.75rem);
  background: rgba(255, 251, 252, 0.88);
  border: 2px solid var(--color-main);
  border-radius: var(--radius-lg);
  box-shadow: 0 16px 48px var(--color-shadow);
  animation: fade-in 0.8s ease both;
}

.letter-header {
  margin-bottom: 1.75rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--color-main);
}

.letter-date {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-soft);
  margin-bottom: 0.5rem;
}

.letter-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 5vw, 2.25rem);
  font-weight: 600;
  font-style: italic;
  color: var(--color-text);
  line-height: 1.25;
}

.letter-body {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.8vw, 1.25rem);
  line-height: 1.85;
  color: var(--color-text);
}

.letter-body p {
  margin-bottom: 1.25rem;
}

.letter-body p:last-child {
  margin-bottom: 0;
}

.letter-signoff {
  font-style: italic;
  color: var(--color-text-soft);
}

/* ─── Responsive ─── */
@media (max-width: 640px) {
  .timer-panel {
    left: 1rem;
    right: 1rem;
    bottom: 1rem;
  }

  .timer-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 0.35rem;
  }

  .timer-value {
    font-size: 1.05rem;
  }

  .site-header {
    padding: 1rem;
  }
}

@media (max-width: 380px) {
  .timer-name {
    font-size: 0.58rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .floating-heart {
    animation: none;
    opacity: 0.4;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}