/* ============================================================
   BIRTHDAY WEBSITE — STYLE.CSS
   Mobile-first. Glassmorphism. Luxury feel.
   Colors & fonts driven by CONFIG in script.js via CSS vars.
============================================================ */

/* ── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Defaults — overridden by CONFIG in script.js */
  --c-bg:        #0d0810;
  --c-surface:   rgba(255,255,255,0.05);
  --c-border:    rgba(255,255,255,0.1);
  --c-text:      #f5e6d8;
  --c-muted:     rgba(245,230,216,0.55);
  --c-accent1:   #e8a87c;
  --c-accent2:   #c97fbf;
  --c-accent3:   #7ec8e3;
  --c-gold:      #d4a853;
  --c-glow1:     rgba(232,168,124,0.35);
  --c-glow2:     rgba(201,127,191,0.3);
  --c-glow3:     rgba(126,200,227,0.2);
  --font-display: 'Great Vibes', cursive;
  --font-heading: 'Cormorant Garamond', Georgia, serif;
  --font-body:    'DM Sans', sans-serif;
  --radius:       1.25rem;
  --transition:   0.4s cubic-bezier(0.4,0,0.2,1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--c-bg);
  color: var(--c-text);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Utility ──────────────────────────────────────────────── */
.hidden { display: none !important; }

.section {
  position: relative;
  padding: 5rem 1.25rem;
  overflow: hidden;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-eyebrow {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-accent1);
  margin-bottom: 0.6rem;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.9rem, 6vw, 3rem);
  font-weight: 300;
  font-style: italic;
  color: var(--c-text);
  letter-spacing: 0.01em;
  line-height: 1.2;
}

/* ── Scroll Reveal ────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── HERO ─────────────────────────────────────────────────── */
#hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: 2rem 1.5rem;
}

#particle-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  animation: floatGlow 8s ease-in-out infinite alternate;
}
.glow-1 {
  width: 45vw; height: 45vw;
  max-width: 400px; max-height: 400px;
  background: var(--c-glow1);
  top: 5%; left: -10%;
  animation-delay: 0s;
}
.glow-2 {
  width: 40vw; height: 40vw;
  max-width: 360px; max-height: 360px;
  background: var(--c-glow2);
  bottom: 10%; right: -8%;
  animation-delay: -3s;
}
.glow-3 {
  width: 30vw; height: 30vw;
  max-width: 280px; max-height: 280px;
  background: var(--c-glow3);
  top: 40%; left: 35%;
  animation-delay: -6s;
}

@keyframes floatGlow {
  0%   { transform: translate(0,0) scale(1); }
  100% { transform: translate(20px,30px) scale(1.15); }
}

.hero-content {
  position: relative;
  z-index: 2;
  animation: heroEntrance 1.2s cubic-bezier(0.2,0.8,0.2,1) forwards;
  opacity: 0;
}

@keyframes heroEntrance {
  0%   { opacity: 0; transform: translateY(60px) scale(0.95); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}

.hero-label {
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--c-accent1);
  margin-bottom: 1.2rem;
  animation: fadeInUp 1s 0.3s ease both;
}

.hero-greeting {
  font-family: var(--font-display);
  font-size: clamp(4rem, 10vw, 8rem);
  color: var(--c-text);
  line-height: 1.25;
  padding-bottom: .15em;
  margin-bottom: 0.2rem;
  padding-left: 40px;
    padding-right: 40px;
    overflow: visible;
  background: linear-gradient(135deg, var(--c-text) 0%, var(--c-accent1) 50%, var(--c-accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 30px var(--c-glow1));
  animation: fadeInUp 1s 0.5s ease both;
}

.hero-name {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 8vw, 4rem);
  font-weight: 300;
  letter-spacing: 0.12em;
  color: var(--c-text);
  margin-bottom: 0.4rem;
  animation: fadeInUp 1s 0.7s ease both;
}

.hero-date {
  font-size: 0.8rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: 1.6rem;
  animation: fadeInUp 1s 0.9s ease both;
}

.hero-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  margin: 0 auto 1.4rem;
  animation: fadeInUp 1s 1.1s ease both;
}
.hero-divider span {
  display: block;
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-gold), transparent);
}
.hero-divider svg { fill: var(--c-gold); opacity: 0.8; }

.hero-sub {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: clamp(0.95rem, 3.5vw, 1.2rem);
  color: var(--c-muted);
  max-width: 340px;
  margin: 0 auto;
  animation: fadeInUp 1s 1.3s ease both;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  z-index: 2;
  animation: fadeInUp 1s 1.8s ease both;
}
.scroll-hint span {
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-muted);
}
.scroll-arrow {
  width: 1px;
  height: 36px;
  background: linear-gradient(to bottom, var(--c-accent1), transparent);
  animation: scrollPulse 1.8s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%,100% { opacity: 0.3; transform: scaleY(0.7); }
  50%      { opacity: 1;   transform: scaleY(1); }
}

/* ── GALLERY ──────────────────────────────────────────────── */
#gallery { padding-top: 4rem; }

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  max-width: 900px;
  margin: 0 auto;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  opacity: 0;
  transform: scale(0.92) translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease, box-shadow 0.4s ease;
}
.gallery-item.visible {
  opacity: 1;
  transform: scale(1) translateY(0);
}

/* Make every 5th item span 2 columns for masonry feel */
.gallery-item:nth-child(5n+1) { grid-column: span 2; aspect-ratio: 16/7; }
.gallery-item:not(:nth-child(5n+1)) { aspect-ratio: 3/4; }

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--transition);
  display: block;
}
.gallery-item:hover img { transform: scale(1.07); }

.gallery-item .gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(13,8,16,0.7) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.4s ease;
  display: flex;
  align-items: flex-end;
  padding: 1rem;
}
.gallery-item:hover .gallery-overlay { opacity: 1; }
.gallery-item .gallery-caption {
  font-size: 0.75rem;
  color: var(--c-text);
  letter-spacing: 0.08em;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.92);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
  padding: 1rem;
}
.lightbox.open {
  opacity: 1;
  pointer-events: all;
}
.lightbox img {
  max-width: 100%;
  max-height: 85svh;
  border-radius: 1rem;
  object-fit: contain;
  box-shadow: 0 0 80px rgba(0,0,0,0.8);
  transform: scale(0.92);
  transition: transform 0.4s ease;
}
.lightbox.open img { transform: scale(1); }
.lightbox-caption {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-heading);
  font-style: italic;
  color: var(--c-muted);
  font-size: 0.9rem;
  white-space: nowrap;
}
.lightbox-close, .lightbox-prev, .lightbox-next {
  position: absolute;
  background: rgba(255,255,255,0.1);
  border: 1px solid var(--c-border);
  color: var(--c-text);
  cursor: pointer;
  border-radius: 50%;
  width: 42px; height: 42px;
  font-size: 1.2rem;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.3s;
  backdrop-filter: blur(8px);
}
.lightbox-close:hover, .lightbox-prev:hover, .lightbox-next:hover {
  background: rgba(255,255,255,0.2);
}
.lightbox-close { top: 1rem; right: 1rem; font-size: 1rem; }
.lightbox-prev  { left: 1rem; top: 50%; transform: translateY(-50%); font-size: 1.6rem; }
.lightbox-next  { right: 1rem; top: 50%; transform: translateY(-50%); font-size: 1.6rem; }

/* ── POEM ─────────────────────────────────────────────────── */
#poem {
  background: radial-gradient(ellipse at center, rgba(201,127,191,0.07) 0%, transparent 70%);
}

.poem-bg-deco {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.015) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}

.poem-card {
  max-width: 580px;
  margin: 0 auto;
  background: linear-gradient(135deg, rgba(255,255,255,0.06), rgba(255,255,255,0.02));
  border: 1px solid var(--c-border);
  border-radius: 2rem;
  padding: 3rem 2rem;
  text-align: center;
  backdrop-filter: blur(12px);
  box-shadow: 0 0 60px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.1);
  position: relative;
}

.poem-ornament {
  font-size: 2.5rem;
  color: var(--c-gold);
  opacity: 0.6;
  line-height: 1;
  display: block;
  margin-bottom: 1.2rem;
}
.poem-ornament.bottom { margin-top: 1.5rem; margin-bottom: 0; transform: scaleY(-1); display: inline-block; }

.poem-title {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 5vw, 2rem);
  font-weight: 400;
  font-style: italic;
  color: var(--c-text);
  margin-bottom: 1rem;
}

.poem-divider {
  width: 60px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-gold), transparent);
  margin: 0 auto 1.5rem;
}

.poem-text {
  font-family: var(--font-heading);
  font-size: clamp(0.95rem, 3vw, 1.1rem);
  font-style: italic;
  color: var(--c-muted);
  line-height: 2;
  white-space: pre-line;
}

/* ── LETTER ───────────────────────────────────────────────── */
#letter {
  background: radial-gradient(ellipse at 80% 50%, rgba(232,168,124,0.06) 0%, transparent 60%);
}

.letter-card {
  max-width: 640px;
  margin: 0 auto;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--c-border);
  border-radius: 2rem;
  padding: 2.5rem 2rem;
  position: relative;
  overflow: hidden;
}

.letter-lines {
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent calc(1.7em * 1.1 - 1px),
    rgba(255,255,255,0.04) calc(1.7em * 1.1 - 1px),
    rgba(255,255,255,0.04) calc(1.7em * 1.1)
  );
  background-size: 100% calc(1.7em * 1.1);
  background-position: 0 2.5rem;
  pointer-events: none;
}

.letter-text {
  font-family: var(--font-heading);
  font-size: clamp(1rem, 3.5vw, 1.15rem);
  font-style: italic;
  color: var(--c-text);
  line-height: 1.9;
  position: relative;
  z-index: 1;
  white-space: pre-line;
  min-height: 3em;
}

.letter-signature {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--c-accent1);
  margin-top: 1.5rem;
  display: block;
  text-align: right;
  position: relative;
  z-index: 1;
}

/* Typing cursor */
.letter-text .cursor {
  display: inline-block;
  width: 2px;
  height: 1.1em;
  background: var(--c-accent1);
  vertical-align: text-bottom;
  margin-left: 2px;
  animation: blink 0.8s step-end infinite;
}
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0; } }

/* ── TIMELINE ─────────────────────────────────────────────── */
#timeline {
  background: radial-gradient(ellipse at 20% 50%, rgba(126,200,227,0.05) 0%, transparent 60%);
}

.timeline-track {
  position: relative;
  max-width: 560px;
  margin: 0 auto;
  padding-left: 1.5rem;
}
.timeline-track::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--c-accent2), var(--c-accent3), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 2.5rem;
  padding-left: 1.5rem;
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.timeline-item.visible {
  opacity: 1;
  transform: translateX(0);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -1.5rem;
  top: 0.4rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--c-accent1);
  border: 2px solid var(--c-bg);
  box-shadow: 0 0 12px var(--c-glow1);
}

.timeline-year {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-accent1);
  margin-bottom: 0.3rem;
}

.timeline-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 1rem;
  padding: 1.2rem 1.4rem;
  backdrop-filter: blur(8px);
}

.timeline-moment {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 400;
  font-style: italic;
  color: var(--c-text);
  margin-bottom: 0.3rem;
}
.timeline-desc {
  font-size: 0.85rem;
  color: var(--c-muted);
  line-height: 1.5;
}

/* ── SURPRISE ─────────────────────────────────────────────── */
#surprise {
  text-align: center;
  background: radial-gradient(ellipse at center, rgba(201,127,191,0.08) 0%, transparent 60%);
}

#confetti-canvas {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.surprise-inner {
  position: relative;
  z-index: 1;
}

.surprise-title {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 6vw, 2.8rem);
  font-weight: 300;
  font-style: italic;
  margin: 0.5rem 0 0.4rem;
}

.surprise-hint {
  font-size: 0.85rem;
  color: var(--c-muted);
  margin-bottom: 2rem;
  letter-spacing: 0.05em;
}

.surprise-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  padding: 1rem 2.2rem;
  background: linear-gradient(135deg, var(--c-accent1), var(--c-accent2));
  color: #fff;
  border: none;
  border-radius: 50px;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  box-shadow: 0 8px 30px rgba(201,127,191,0.35);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  letter-spacing: 0.04em;
}
.surprise-btn:hover  { transform: translateY(-3px) scale(1.03); box-shadow: 0 12px 40px rgba(201,127,191,0.5); }
.surprise-btn:active { transform: scale(0.97); }
.surprise-btn-icon { font-size: 1.4rem; }

.surprise-message {
  max-width: 540px;
  margin: 2.5rem auto 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.07), rgba(255,255,255,0.02));
  border: 1px solid var(--c-border);
  border-radius: 2rem;
  padding: 2rem 1.8rem;
  backdrop-filter: blur(12px);
  animation: popIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}
@keyframes popIn {
  0%   { opacity:0; transform: scale(0.7); }
  100% { opacity:1; transform: scale(1); }
}

.surprise-msg-inner {
  font-family: var(--font-heading);
  font-size: clamp(1rem, 3.5vw, 1.2rem);
  font-style: italic;
  color: var(--c-text);
  line-height: 1.8;
  white-space: pre-line;
}

/* ── FINAL WISHES ─────────────────────────────────────────── */
#wishes {
  min-height: 70svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: radial-gradient(ellipse at center bottom, rgba(212,168,83,0.1) 0%, transparent 60%);
}

.wishes-stars {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.star {
  position: absolute;
  border-radius: 50%;
  background: white;
  animation: twinkle var(--dur, 3s) ease-in-out infinite;
  animation-delay: var(--delay, 0s);
}
@keyframes twinkle {
  0%,100% { opacity: 0.1; transform: scale(0.8); }
  50%      { opacity: 0.9; transform: scale(1.2); }
}

.wishes-inner { position: relative; z-index: 1; }

.wishes-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 10vw, 5.5rem);
  background: linear-gradient(135deg, var(--c-text) 0%, var(--c-gold) 50%, var(--c-accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  margin: 0.5rem 0 1rem;
}

.wishes-text {
  font-family: var(--font-heading);
  font-size: clamp(1rem, 3.5vw, 1.3rem);
  font-style: italic;
  color: var(--c-muted);
  max-width: 400px;
  margin: 0 auto 2rem;
}

.wishes-hearts {
  display: flex;
  gap: 1rem;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 2.5rem;
}
.wishes-hearts span:nth-child(1) { color: var(--c-accent2); animation: heartBeat 1.8s ease-in-out infinite; }
.wishes-hearts span:nth-child(2) { color: var(--c-accent1); animation: heartBeat 1.8s 0.3s ease-in-out infinite; font-size: 2rem; }
.wishes-hearts span:nth-child(3) { color: var(--c-accent2); animation: heartBeat 1.8s 0.6s ease-in-out infinite; }
@keyframes heartBeat {
  0%,100% { transform: scale(1); }
  14%     { transform: scale(1.25); }
  28%     { transform: scale(1); }
  42%     { transform: scale(1.15); }
  70%     { transform: scale(1); }
}

.replay-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  background: transparent;
  border: 1px solid var(--c-gold);
  color: var(--c-gold);
  border-radius: 50px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: all 0.3s ease;
}
.replay-btn:hover {
  background: var(--c-gold);
  color: var(--c-bg);
  box-shadow: 0 0 30px rgba(212,168,83,0.4);
}

/* ── AUDIO PLAYER ─────────────────────────────────────────── */
.audio-player {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 200;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(13,8,16,0.8);
  border: 1px solid var(--c-border);
  border-radius: 50px;
  padding: 0.5rem 1rem 0.5rem 0.5rem;
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.4);
}

.audio-btn {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--c-accent1), var(--c-accent2));
  border: none;
  color: #fff;
  font-size: 1rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}
.audio-btn:hover { transform: scale(1.1); }
.audio-label {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--c-muted);
  white-space: nowrap;
}

/* ── RESPONSIVE — tablet / desktop ───────────────────────── */
@media (min-width: 600px) {
  .gallery-grid { gap: 1rem; }
  .poem-card { padding: 4rem 3rem; }
  .letter-card { padding: 3rem 2.5rem; }
}

@media (min-width: 900px) {
  .section { padding: 7rem 3rem; }

  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  /* reset mobile masonry; let JS-set classes do the work */
  .gallery-item:nth-child(5n+1) { grid-column: span 2; aspect-ratio: 4/3; }
  .gallery-item:not(:nth-child(5n+1)) { aspect-ratio: 3/4; }

  .timeline-track { padding-left: 2rem; }
  .timeline-item  { padding-left: 2rem; }
}

/* ── CONFETTI ─────────────────────────────────────────────── */
.confetti-piece {
  position: absolute;
  width: 8px; height: 8px;
  opacity: 0;
  animation: confettiFall var(--duration, 3s) var(--delay, 0s) ease-in forwards;
  border-radius: var(--shape, 2px);
}
@keyframes confettiFall {
  0%   { opacity: 1; transform: translateY(-40px) rotate(0deg); }
  100% { opacity: 0; transform: translateY(calc(var(--fall) * 1px)) rotate(var(--rotate) * 1deg); }
}

/* ── Floating hearts (surprise) ───────────────────────────── */
.float-heart {
  position: absolute;
  pointer-events: none;
  font-size: 1.4rem;
  animation: floatUp 2s ease-out forwards;
  z-index: 10;
}
@keyframes floatUp {
  0%   { opacity: 1; transform: translateY(0) scale(1); }
  100% { opacity: 0; transform: translateY(-160px) scale(0.4); }
}