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

:root {
  --color-black: #1a1a1a;
  --color-gray: #666;
  --color-light-gray: #f5f5f5;
  --color-border: #e0e0e0;
  --color-accent: #b8975a;
  --color-white: #ffffff;
  --font-serif: 'Noto Serif KR', serif;
  --font-sans: 'Noto Sans KR', sans-serif;
  --max-width: 480px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--color-black);
  background: var(--color-white);
  max-width: var(--max-width);
  margin: 0 auto;
  font-size: 14px;
  line-height: 1.8;
}

img { display: block; width: 100%; height: 100%; object-fit: cover; }

/* ===== Section Base ===== */
.section {
  padding: 72px 28px;
  border-bottom: 1px solid var(--color-border);
}

.section__header {
  text-align: center;
  margin-bottom: 40px;
}

.section__sub {
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 10px;
}

.section__title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 400;
  color: var(--color-black);
  margin-bottom: 12px;
}

.section__desc {
  font-size: 13px;
  color: var(--color-gray);
}

/* ===== Intro ===== */
.section--intro {
  position: relative;
  height: 100svh;
  min-height: 600px;
  padding: 0;
  border: none;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.intro__bg {
  position: absolute;
  inset: 0;
  background: #e8e4e0;
  z-index: 0;
}

.intro__photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.intro__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.35);
}

.intro__content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--color-white);
  padding: 24px;
}

.intro__label {
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.intro__names {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 300;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.intro__heart { color: var(--color-accent); }

.intro__date {
  font-size: 15px;
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}

.intro__venue {
  font-size: 13px;
  color: var(--color-gray);
  margin-bottom: 32px;
}

.intro__countdown {
  display: flex;
  gap: 20px;
  justify-content: center;
}

.countdown__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.countdown__item span {
  font-size: 28px;
  font-weight: 300;
  font-family: var(--font-serif);
  min-width: 40px;
  text-align: center;
}

.countdown__item small {
  font-size: 10px;
  color: var(--color-gray);
  letter-spacing: 0.1em;
}

.intro__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.intro__scroll span {
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gray);
}

.intro__scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-gray), transparent);
  animation: scrollLine 1.5s ease-in-out infinite;
}

@keyframes scrollLine {
  0%, 100% { opacity: 0.3; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.2); }
}

/* ===== Couple ===== */
.couple__message {
  text-align: center;
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--color-gray);
  line-height: 2;
  margin-bottom: 48px;
}

.couple__message p + p { margin-top: 24px; }

.couple__info {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
}

.couple__person { text-align: center; }

.couple__role {
  font-size: 11px;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  margin-bottom: 6px;
}

.couple__name {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 400;
  margin-bottom: 6px;
}

.couple__parents {
  font-size: 12px;
  color: var(--color-gray);
  line-height: 1.6;
}

.couple__divider {
  font-size: 18px;
  color: var(--color-accent);
  flex-shrink: 0;
}

/* ===== Gallery ===== */
.gallery__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  cursor: pointer;
}

.gallery__item {
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--color-light-gray);
}

.gallery__item img {
  transition: transform 0.3s ease;
}

.gallery__item:hover img { transform: scale(1.05); }

.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.92);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.lightbox.active { display: flex; }

.lightbox__img {
  max-width: 90vw;
  max-height: 85svh;
  object-fit: contain;
  border-radius: 2px;
}

.lightbox__close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  color: white;
  font-size: 24px;
  cursor: pointer;
  line-height: 1;
}

/* ===== Venue ===== */
.venue__details {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.venue__item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.venue__icon { font-size: 20px; flex-shrink: 0; }

.venue__label {
  font-size: 11px;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}

.venue__value {
  font-family: var(--font-serif);
  font-size: 16px;
}

.venue__hall { font-size: 14px; color: var(--color-gray); }

.venue__address {
  font-size: 12px;
  color: var(--color-gray);
  margin-top: 4px;
}

/* ===== Map ===== */
.map__container {
  width: 100%;
  height: 260px;
  border-radius: 4px;
  overflow: hidden;
  background: var(--color-light-gray);
  margin-bottom: 16px;
}

.map__actions {
  text-align: center;
  margin-bottom: 24px;
}

.map__transport {
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
}

.transport__item {
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
}

.transport__item summary {
  cursor: pointer;
  font-size: 14px;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.transport__item summary::-webkit-details-marker { display: none; }

.transport__item p {
  margin-top: 12px;
  padding-left: 28px;
  font-size: 13px;
  color: var(--color-gray);
  line-height: 1.8;
}

/* ===== Forms ===== */
.form__group { margin-bottom: 16px; }

.form__label {
  display: block;
  font-size: 12px;
  color: var(--color-gray);
  margin-bottom: 6px;
  letter-spacing: 0.05em;
}

.form__input {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  padding: 10px 12px;
  font-size: 14px;
  font-family: var(--font-sans);
  color: var(--color-black);
  background: var(--color-white);
  transition: border-color 0.2s;
  outline: none;
  -webkit-appearance: none;
}

.form__input:focus { border-color: var(--color-accent); }

.form__textarea { resize: vertical; }

.form__radio-group {
  display: flex;
  gap: 20px;
}

.form__radio {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  cursor: pointer;
}

.form__radio input { accent-color: var(--color-accent); }

.form__result {
  margin-top: 12px;
  font-size: 13px;
  text-align: center;
  color: var(--color-accent);
  min-height: 20px;
}

/* ===== Guestbook ===== */
.guestbook__form { margin-bottom: 32px; }

.guestbook__list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.guestbook__loading {
  text-align: center;
  color: var(--color-gray);
  font-size: 13px;
  padding: 20px;
}

.guestbook__card {
  background: var(--color-light-gray);
  border-radius: 4px;
  padding: 16px;
}

.guestbook__card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.guestbook__card-name {
  font-size: 14px;
  font-weight: 500;
}

.guestbook__card-date {
  font-size: 11px;
  color: var(--color-gray);
}

.guestbook__card-message {
  font-size: 13px;
  color: var(--color-gray);
  line-height: 1.7;
}

.guestbook__card-delete {
  background: none;
  border: none;
  font-size: 11px;
  color: var(--color-gray);
  cursor: pointer;
  margin-top: 8px;
  text-decoration: underline;
}

/* ===== Account ===== */
.account__list {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.account__group { }

.account__side {
  font-size: 11px;
  color: var(--color-accent);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  text-align: center;
}

.account__item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.account__name { font-size: 14px; font-weight: 500; flex: 0 0 auto; }
.account__bank { font-size: 12px; color: var(--color-gray); flex: 1; }
.account__number { font-size: 13px; letter-spacing: 0.05em; }

.account__toast {
  position: fixed;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-black);
  color: var(--color-white);
  padding: 10px 20px;
  border-radius: 20px;
  font-size: 13px;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  white-space: nowrap;
  z-index: 999;
}

.account__toast.show { opacity: 1; }

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 2px;
  font-size: 13px;
  font-family: var(--font-sans);
  cursor: pointer;
  letter-spacing: 0.05em;
  transition: all 0.2s;
  border: none;
  text-decoration: none;
}

.btn--primary {
  width: 100%;
  background: var(--color-black);
  color: var(--color-white);
  text-align: center;
}

.btn--primary:active { background: #333; }

.btn--outline {
  background: transparent;
  color: var(--color-black);
  border: 1px solid var(--color-black);
}

.btn--copy {
  padding: 6px 12px;
  background: var(--color-light-gray);
  color: var(--color-gray);
  border: 1px solid var(--color-border);
  font-size: 12px;
  border-radius: 2px;
  cursor: pointer;
  flex-shrink: 0;
}

/* ===== Fade-in on scroll ===== */
.section {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.section.visible {
  opacity: 1;
  transform: translateY(0);
}

.section--intro { opacity: 1; transform: none; }