/**
 * ============================================================
 * BASE & PAPER SYSTEM — BLUE BOTANICAL WATERCOLOR
 * ============================================================
 */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
}

body {
  min-height: 100vh;
  line-height: 1.65;
  background-color: var(--color-bg);
  /* Organic fine cotton paper grain overlay */
  background-image: radial-gradient(circle at 50% 40%, rgba(255, 253, 248, 0.75) 0%, rgba(245, 241, 232, 0.96) 100%),
                    url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.038'/%3E%3C/svg%3E");
  background-attachment: fixed;
  overflow-x: hidden;
  position: relative;
}

/* Typography Defaults */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.25;
  color: var(--color-deep-blue-grey);
  letter-spacing: 0.04em;
}

p {
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 400;
}

a {
  color: inherit;
  text-decoration: none;
}

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  outline: none;
}

input, textarea {
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-paper-tint);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-family: var(--font-sans);
  font-size: 0.88rem;
  color: var(--color-text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus, textarea:focus {
  border-color: var(--color-dusty-blue);
  box-shadow: 0 0 0 2px rgba(168, 195, 211, 0.25);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ============================================================
   STATIONERY SHELL & DESKTOP ARCHITECTURE
   ============================================================ */
.stationery-wrapper {
  width: 100%;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 0;
  position: relative;
}

/* Mobile: full width seamless invitation card */
/* Desktop: centered luxury invitation booklet (max-width 480px) */
.wedding-stationery-card {
  width: 100%;
  max-width: 480px;
  min-height: 100vh;
  background-color: var(--color-paper);
  position: relative;
  box-shadow: var(--shadow-paper);
  border-left: 1px solid var(--color-border-subtle);
  border-right: 1px solid var(--color-border-subtle);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: opacity 0.5s ease;
}

@media (min-width: 541px) {
  .stationery-wrapper {
    padding: 36px 20px;
  }

  .wedding-stationery-card {
    border-radius: var(--radius-md);
    border-top: 1px solid var(--color-border-subtle);
    border-bottom: 1px solid var(--color-border-subtle);
    margin-bottom: 40px;
  }
}

/* ============================================================
   SIGNATURE DOUBLE-LINE STATIONERY BORDER
   From Art Direction Reference Image
   ============================================================ */
.stationery-double-frame {
  position: absolute;
  top: 14px;
  bottom: 14px;
  left: 14px;
  right: 14px;
  pointer-events: none;
  z-index: 12;
}

.stationery-double-frame::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border: 1px solid var(--color-border-outer);
  border-radius: 2px;
}

.stationery-double-frame::after {
  content: "";
  position: absolute;
  top: 4px;
  left: 4px;
  right: 4px;
  bottom: 4px;
  border: 0.75px solid var(--color-border-inner);
  border-radius: 1px;
}

/* ============================================================
   DECORATIVE ORNAMENTAL DIVIDERS
   From Reference: Slender line with center floral motif
   ============================================================ */
.ornamental-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin: var(--space-md) auto;
  width: 100%;
  max-width: 220px;
  opacity: 0.85;
}

.ornamental-divider::before,
.ornamental-divider::after {
  content: "";
  flex: 1;
  height: 0.8px;
  background-color: var(--color-dusty-blue);
}

.ornamental-divider svg {
  width: 28px;
  height: 12px;
  stroke: var(--color-deep-blue-grey);
  fill: none;
}

/* ============================================================
   BOTANICAL MICRO-ANIMATIONS (60 FPS, Sub-degree sway)
   ============================================================ */
.subtle-sway {
  transform-origin: bottom center;
  animation: gentleSway 7s ease-in-out infinite alternate;
}

@keyframes gentleSway {
  0% { transform: rotate(-1deg); }
  100% { transform: rotate(1.2deg); }
}

/* Blue Butterfly Flutter */
.butterfly-element {
  position: absolute;
  pointer-events: none;
  z-index: 15;
  filter: drop-shadow(0 2px 4px rgba(82, 111, 125, 0.18));
  animation: butterflyFloat 6s ease-in-out infinite alternate;
}

@keyframes butterflyFloat {
  0% { transform: translate(0, 0) rotate(0deg) scale(1); }
  50% { transform: translate(4px, -6px) rotate(3deg) scale(1.02); }
  100% { transform: translate(-3px, -10px) rotate(-2deg) scale(0.98); }
}

/* Petal Drift */
.drifting-petal {
  position: absolute;
  pointer-events: none;
  z-index: 14;
  animation: petalSway 8s ease-in-out infinite alternate;
}

@keyframes petalSway {
  0% { transform: translate(0, 0) rotate(0deg); }
  100% { transform: translate(6px, 8px) rotate(8deg); }
}

/* ============================================================
   MUSIC FLOATING CONTROLLER
   ============================================================ */
.music-toggle-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--color-paper);
  border: 1px solid var(--color-dusty-blue);
  box-shadow: 0 4px 14px rgba(82, 111, 125, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.music-toggle-btn:hover {
  transform: scale(1.06);
  box-shadow: 0 6px 18px rgba(82, 111, 125, 0.25);
}

.music-toggle-btn svg {
  width: 18px;
  height: 18px;
  stroke: var(--color-deep-blue-grey);
  fill: none;
  stroke-width: 1.5;
}

.music-toggle-btn.playing {
  animation: musicSpin 8s linear infinite;
}

.music-toggle-btn.playing svg {
  stroke: var(--color-dusty-blue);
}

@keyframes musicSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* ============================================================
   ACCESSIBILITY: REDUCED MOTION (Softened for Wedding Experience)
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}