/* ============================================================
   Components
   ============================================================ */

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: var(--fs-16);
  font-weight: 600;
  line-height: 1;
  border: 1px solid transparent;
  background: transparent;
  color: inherit;
  cursor: pointer;
  transition: background var(--dur-base) var(--ease),
              color var(--dur-base) var(--ease),
              border-color var(--dur-base) var(--ease),
              transform var(--dur-base) var(--ease),
              box-shadow var(--dur-base) var(--ease);
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--color-primary);
  color: var(--color-text-invert);
}
.btn--primary:hover {
  background: var(--color-primary-dark);
  color: var(--color-text-invert);
  box-shadow: var(--shadow-md);
}

.btn--accent {
  background: var(--color-accent);
  color: var(--color-bg-deep);
}
.btn--accent:hover { background: #1FA7BD; }

.btn--secondary {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}
.btn--secondary:hover {
  background: var(--color-primary-soft);
}

.btn--ghost {
  color: var(--color-primary);
  background: transparent;
}
.btn--ghost:hover { background: var(--color-primary-soft); }

.btn--invert {
  border: 1px solid var(--color-border-invert);
  color: var(--color-text-invert);
}
.btn--invert:hover {
  background: rgba(248, 250, 252, 0.1);
}

.btn--sm { padding: 10px 18px; font-size: var(--fs-14); }
.btn--lg { padding: 18px 36px; font-size: var(--fs-18); }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: var(--z-header);
  transition: height var(--dur-base) var(--ease),
              box-shadow var(--dur-base) var(--ease);
}
.site-header.is-scrolled {
  height: var(--header-height-compact);
  box-shadow: var(--shadow-sm);
}
.site-header__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-6);
}
.site-header__brand {
  display: flex; align-items: center; gap: var(--sp-3);
  text-decoration: none;
  color: var(--color-text);
  font-weight: 700;
  line-height: 1.2;
}
.site-header__brand-mark {
  width: 36px; height: 36px;
  display: grid; place-items: center;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  color: var(--color-text-invert);
  font-size: var(--fs-12);
  font-weight: 800;
  letter-spacing: 0.05em;
}
.site-header__brand-text { display: flex; flex-direction: column; }
.site-header__brand-title { font-size: var(--fs-14); font-weight: 700; }
.site-header__brand-sub { font-size: var(--fs-12); color: var(--color-text-muted); font-weight: 500; }

.site-nav { display: flex; align-items: center; gap: var(--sp-2); }
.site-nav__link {
  padding: var(--sp-2) var(--sp-3);
  font-size: var(--fs-14);
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-md);
  transition: background var(--dur-base) var(--ease), color var(--dur-base) var(--ease);
}
.site-nav__link:hover, .site-nav__link[aria-current="true"] {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.site-header__actions {
  display: flex; align-items: center; gap: var(--sp-3);
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 2px;
  background: var(--color-bg-alt);
}
.lang-toggle__btn {
  padding: 6px 14px;
  font-size: var(--fs-12);
  font-weight: 600;
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background var(--dur-base) var(--ease), color var(--dur-base) var(--ease);
}
.lang-toggle__btn[aria-pressed="true"] {
  background: var(--color-primary);
  color: var(--color-text-invert);
}

.menu-toggle {
  display: none;
  width: 40px; height: 40px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  cursor: pointer;
  align-items: center; justify-content: center;
}
.menu-toggle__bars, .menu-toggle__bars::before, .menu-toggle__bars::after {
  content: "";
  display: block;
  width: 18px; height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--dur-base) var(--ease), opacity var(--dur-base) var(--ease);
}
.menu-toggle__bars { position: relative; }
.menu-toggle__bars::before { position: absolute; top: -6px; left: 0; }
.menu-toggle__bars::after { position: absolute; top: 6px; left: 0; }

@media (max-width: 640px) {
  .site-header__inner { gap: var(--sp-3); }
  .site-header__brand-mark { width: 32px; height: 32px; font-size: 10px; }
  .site-header__brand-sub { display: none; }
  .site-header__brand-title { font-size: 12px; }
}

@media (max-width: 1024px) {
  .menu-toggle { display: inline-flex; }
  .site-nav {
    position: fixed;
    top: var(--header-height); right: 0;
    width: min(320px, 90vw);
    height: calc(100vh - var(--header-height));
    background: var(--color-bg-alt);
    border-left: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    padding: var(--sp-6);
    gap: var(--sp-2);
    transform: translateX(100%);
    transition: transform var(--dur-slow) var(--ease);
  }
  .site-nav.is-open { transform: translateX(0); box-shadow: var(--shadow-lg); }
  .site-nav__link { padding: var(--sp-3) var(--sp-4); font-size: var(--fs-16); }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: min(92vh, 760px);
  padding-top: var(--header-height);
  background:
    radial-gradient(ellipse 60% 50% at 70% 20%, rgba(34, 184, 207, 0.25), transparent 60%),
    radial-gradient(ellipse 50% 50% at 20% 80%, rgba(10, 77, 140, 0.55), transparent 60%),
    linear-gradient(180deg, var(--color-bg-deep) 0%, var(--color-bg) 100%);
  color: var(--color-text-invert);
  overflow: hidden;
  display: flex;
  align-items: center;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle at 12% 22%, rgba(255,255,255,0.7) 0, transparent 1.2px),
    radial-gradient(circle at 88% 14%, rgba(255,255,255,0.5) 0, transparent 1px),
    radial-gradient(circle at 45% 68%, rgba(255,255,255,0.55) 0, transparent 1px),
    radial-gradient(circle at 72% 86%, rgba(255,255,255,0.4) 0, transparent 1px),
    radial-gradient(circle at 30% 40%, rgba(255,255,255,0.35) 0, transparent 0.8px),
    radial-gradient(circle at 60% 30%, rgba(255,255,255,0.4) 0, transparent 0.9px),
    radial-gradient(circle at 18% 78%, rgba(255,255,255,0.5) 0, transparent 1px);
  background-size: 100% 100%;
  opacity: 0.9;
  pointer-events: none;
}
/* Event-photo mosaic on the right side of the hero
   - bento-style varied tiles
   - subtle stagger fade-in
   - hover lifts tile + brightens
*/
.hero__mosaic {
  position: absolute;
  top: 18%; right: 3%; bottom: 18%;
  width: 38%;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-template-rows: repeat(6, 1fr);
  gap: 10px;
  pointer-events: none;
  z-index: 1;
}
.hero__tile {
  margin: 0;
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  box-shadow:
    0 8px 28px rgba(0, 0, 0, 0.45),
    0 0 0 1px rgba(125, 211, 252, 0.08);
  background: rgba(255, 255, 255, 0.03);
  opacity: 0;
  transform: translateY(12px);
  animation: tile-in 700ms var(--ease-out) forwards;
  pointer-events: auto;
}
.hero__tile img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(1.05) brightness(0.92);
  transition: transform var(--dur-slow) var(--ease),
              filter var(--dur-slow) var(--ease);
}
.hero__tile::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(10,77,140,0.0) 60%, rgba(6,19,34,0.5) 100%);
  pointer-events: none;
}
.hero__tile:hover img {
  transform: scale(1.06);
  filter: saturate(1.15) brightness(1);
}

@keyframes tile-in {
  to { opacity: 1; transform: translateY(0); }
}
.hero__tile--a { grid-column: 1 / span 4; grid-row: 1 / span 3; animation-delay: 0ms;  }
.hero__tile--b { grid-column: 5 / span 2; grid-row: 1 / span 2; animation-delay: 80ms; }
.hero__tile--c { grid-column: 5 / span 2; grid-row: 3 / span 2; animation-delay: 160ms; }
.hero__tile--d { grid-column: 1 / span 2; grid-row: 4 / span 3; animation-delay: 240ms; }
.hero__tile--e { grid-column: 3 / span 2; grid-row: 4 / span 3; animation-delay: 320ms; }
.hero__tile--f { grid-column: 5 / span 2; grid-row: 5 / span 2; animation-delay: 400ms; }

@media (max-width: 1280px) {
  .hero__mosaic { width: 34%; gap: 8px; }
}
@media (max-width: 1024px) {
  .hero__mosaic { width: 30%; gap: 6px; top: 18%; bottom: 18%; right: 2%; }
  .hero__tile { box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4); }
  .hero__tile--b, .hero__tile--c, .hero__tile--f { display: none; }
  .hero__tile--a { grid-column: 1 / span 6; grid-row: 1 / span 3; }
  .hero__tile--d { grid-column: 1 / span 3; grid-row: 4 / span 3; }
  .hero__tile--e { grid-column: 4 / span 3; grid-row: 4 / span 3; }
}
@media (max-width: 720px) {
  .hero__mosaic { display: none; }
}
.hero__inner {
  position: relative;
  z-index: 3;
  padding-top: var(--sp-12);
  padding-bottom: var(--sp-12);
  width: 100%;
}
.hero__inner > * { max-width: 580px; position: relative; }
.hero__meta { max-width: 580px; }
/* 텍스트 좌측 안전 영역 — 모자이크와 겹치지 않도록 */
@media (min-width: 1025px) {
  .hero__inner { padding-right: 44%; }
  .hero__inner > * { max-width: 100%; }
}
@media (max-width: 768px) {
  .hero__inner {
    padding-top: var(--sp-8);
    padding-bottom: var(--sp-8);
  }
  .hero__inner > * { max-width: 100%; }
}
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  padding: 6px 14px;
  background: rgba(34, 184, 207, 0.15);
  border: 1px solid rgba(34, 184, 207, 0.4);
  border-radius: var(--radius-pill);
  font-size: var(--fs-12);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-2);
  margin-bottom: var(--sp-4);
}
.hero__eyebrow-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 8px var(--color-accent);
}
.hero__title {
  color: var(--color-text-invert);
  max-width: 18ch;
  margin-bottom: var(--sp-4);
  font-size: clamp(var(--fs-32), 4.5vw, var(--fs-56));
  line-height: 1.1;
  overflow-wrap: break-word;
  word-break: keep-all;
}
@media (max-width: 640px) {
  .hero__title {
    font-size: 28px;
    line-height: 1.2;
    max-width: 100%;
    word-break: break-word;
  }
  .hero__subtitle { font-size: var(--fs-16); }
  .hero__meta { grid-template-columns: 1fr 1fr; gap: var(--sp-4); }
  .hero__cta { width: 100%; flex-direction: column; }
  .hero__cta .btn { width: 100%; padding: 14px 24px; font-size: var(--fs-16); }
  .hero__meta-value { font-size: var(--fs-16); }
}
.hero__subtitle {
  font-size: clamp(var(--fs-16), 1.4vw, var(--fs-18));
  color: var(--color-text-invert-muted);
  max-width: 580px;
  margin-bottom: var(--sp-6);
  line-height: var(--lh-snug);
}
.hero__meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--sp-4);
  max-width: 580px;
  margin-bottom: var(--sp-6);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--color-border-invert);
}
.hero__meta-item .hero__meta-label {
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-2);
  font-weight: 600;
  margin-bottom: var(--sp-2);
}
.hero__meta-item .hero__meta-value {
  font-size: var(--fs-14);
  color: var(--color-text-invert);
  font-weight: 600;
  line-height: var(--lh-snug);
}
.hero__cta { display: flex; gap: var(--sp-3); flex-wrap: wrap; }

.dday {
  display: inline-flex; align-items: baseline; gap: var(--sp-2);
  padding: 8px 16px;
  background: rgba(255,255,255,0.08);
  border: 1px solid var(--color-border-invert);
  border-radius: var(--radius-pill);
  font-size: var(--fs-14);
  color: var(--color-text-invert);
  margin-bottom: var(--sp-4);
}
.dday__count {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-accent);
  font-size: var(--fs-16);
}

/* ---------- Cards ---------- */
.card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-8);
  transition: box-shadow var(--dur-base) var(--ease), transform var(--dur-base) var(--ease);
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.card__icon {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  border-radius: var(--radius-md);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  margin-bottom: var(--sp-4);
}
.card__title { font-size: var(--fs-20); margin-bottom: var(--sp-3); }
.card__body { color: var(--color-text-muted); margin: 0; }

/* ---------- About info grid ---------- */
.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-4);
  margin-top: var(--sp-8);
}
@media (max-width: 900px) {
  .info-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .info-grid { grid-template-columns: 1fr; }
}
.info-row {
  display: flex; flex-direction: column;
  padding: var(--sp-6);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.info-row__label {
  font-size: var(--fs-12);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--sp-2);
}
.info-row__value { font-size: var(--fs-16); font-weight: 500; color: var(--color-text); }

/* ---------- Program table ---------- */
.program {
  display: grid;
  gap: var(--sp-6);
  margin-top: var(--sp-8);
}
.program__day {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.program__day-header {
  padding: var(--sp-4) var(--sp-6);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-text-invert);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-4);
  flex-wrap: wrap;
}
.program__day-title { font-size: var(--fs-20); font-weight: 700; color: var(--color-text-invert); margin: 0; }
.program__day-date { font-size: var(--fs-14); color: var(--color-accent-2); font-weight: 500; }
.program__sessions { padding: var(--sp-4); }
.program__session {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: var(--sp-6);
  padding: var(--sp-4) var(--sp-2);
  border-bottom: 1px solid var(--color-border);
}
.program__session:last-child { border-bottom: none; }
.program__session-time {
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  font-weight: 600;
  color: var(--color-primary);
}
.program__session-title { font-size: var(--fs-16); font-weight: 600; margin: 0 0 4px; }
.program__session-desc { font-size: var(--fs-14); color: var(--color-text-muted); margin: 0; }
.program__session-tag {
  display: inline-block;
  margin-top: var(--sp-2);
  padding: 2px 10px;
  font-size: var(--fs-12);
  font-weight: 600;
  border-radius: var(--radius-pill);
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

@media (max-width: 640px) {
  .program__session {
    grid-template-columns: 1fr;
    gap: var(--sp-2);
  }
}

/* ---------- Venue ---------- */
.venue {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-8);
  align-items: start;
  margin-top: var(--sp-8);
}
.venue__map {
  aspect-ratio: 4/3;
  background:
    linear-gradient(135deg, rgba(10,77,140,0.05) 0%, rgba(34,184,207,0.08) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden;
}
.venue__map-iframe {
  width: 100%; height: 100%;
  border: 0;
  border-radius: var(--radius-lg);
}
.venue__details h3 { font-size: var(--fs-20); margin-bottom: var(--sp-2); }
.venue__details p { color: var(--color-text-muted); margin-bottom: var(--sp-4); }
.venue__transport { list-style: none; padding: 0; margin: 0; }
.venue__transport li {
  padding: var(--sp-3) 0;
  border-bottom: 1px solid var(--color-border);
  display: flex; gap: var(--sp-4);
}
.venue__transport li:last-child { border-bottom: none; }
.venue__transport-label {
  font-weight: 600;
  color: var(--color-primary);
  min-width: 100px;
}
.venue__transport-value { color: var(--color-text); }

@media (max-width: 900px) {
  .venue { grid-template-columns: 1fr; }
}

/* ---------- Forms ---------- */
.form {
  display: grid;
  gap: var(--sp-6);
}
.form__row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--sp-4);
}
.form__group {
  display: flex; flex-direction: column;
  gap: var(--sp-2);
}
.form__group--full { grid-column: 1 / -1; }

.form__label {
  font-size: var(--fs-14);
  font-weight: 600;
  color: var(--color-text);
  display: flex; align-items: center; gap: 4px;
}
.form__label-required { color: var(--color-error); font-weight: 700; }
.form__hint { font-size: var(--fs-12); color: var(--color-text-muted); }

.form__input,
.form__select,
.form__textarea {
  width: 100%;
  height: 48px;
  padding: 0 14px;
  font-family: inherit;
  font-size: var(--fs-16);
  color: var(--color-text);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--dur-base) var(--ease), box-shadow var(--dur-base) var(--ease);
}
.form__textarea {
  height: auto;
  min-height: 140px;
  padding: 12px 14px;
  resize: vertical;
  line-height: var(--lh-normal);
}
.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-soft);
}
.form__input[aria-invalid="true"],
.form__select[aria-invalid="true"],
.form__textarea[aria-invalid="true"] {
  border-color: var(--color-error);
}
.form__error {
  font-size: var(--fs-12);
  color: var(--color-error);
  margin-top: 2px;
  min-height: 1em;
}

.form__radio-group, .form__checkbox-group {
  display: flex; flex-wrap: wrap; gap: var(--sp-3);
}
.form__radio, .form__checkbox {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  padding: 10px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color var(--dur-base) var(--ease), background var(--dur-base) var(--ease);
}
.form__radio:has(input:checked),
.form__checkbox:has(input:checked) {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-weight: 600;
}
.form__radio input, .form__checkbox input {
  accent-color: var(--color-primary);
}

.form__consent {
  display: flex; gap: var(--sp-3);
  padding: var(--sp-4);
  background: var(--color-bg-soft);
  border-radius: var(--radius-md);
  font-size: var(--fs-14);
  line-height: var(--lh-normal);
}
.form__consent input { margin-top: 4px; accent-color: var(--color-primary); }

.form__actions {
  display: flex; gap: var(--sp-3);
  justify-content: flex-end;
  flex-wrap: wrap;
  padding-top: var(--sp-4);
  border-top: 1px solid var(--color-border);
}

/* File upload */
.file-drop {
  position: relative;
  border: 2px dashed var(--color-border-strong);
  border-radius: var(--radius-lg);
  padding: var(--sp-8);
  text-align: center;
  background: var(--color-bg-soft);
  transition: border-color var(--dur-base) var(--ease), background var(--dur-base) var(--ease);
  cursor: pointer;
}
.file-drop:hover, .file-drop.is-dragover {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}
.file-drop input[type="file"] {
  position: absolute; inset: 0;
  opacity: 0; cursor: pointer;
}
.file-drop__icon { font-size: 32px; margin-bottom: var(--sp-2); }
.file-drop__title { font-weight: 600; margin-bottom: var(--sp-1); }
.file-drop__hint { font-size: var(--fs-12); color: var(--color-text-muted); margin: 0; }
.file-drop__filename {
  display: none;
  margin-top: var(--sp-3);
  padding: var(--sp-2) var(--sp-3);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--fs-14);
  font-weight: 500;
  color: var(--color-primary);
}
.file-drop__filename.is-visible { display: inline-block; }

/* ---------- FAQ ---------- */
.faq { margin-top: var(--sp-8); }
.faq__item {
  border-bottom: 1px solid var(--color-border);
}
.faq__question {
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  padding: var(--sp-6) 0;
  font-size: var(--fs-18);
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--sp-4);
  font-family: inherit;
}
.faq__question:hover { color: var(--color-primary); }
.faq__icon {
  width: 28px; height: 28px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  transition: transform var(--dur-slow) var(--ease);
  flex-shrink: 0;
}
.faq__item[aria-expanded="true"] .faq__icon { transform: rotate(45deg); }
.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--dur-slow) var(--ease-out);
}
.faq__item[aria-expanded="true"] .faq__answer { max-height: 600px; }
.faq__answer-inner {
  padding: 0 0 var(--sp-6);
  color: var(--color-text-muted);
  line-height: var(--lh-relaxed);
}

/* ---------- Notices ---------- */
.notices { display: grid; gap: var(--sp-3); margin-top: var(--sp-8); }
.notice-item {
  display: flex; align-items: flex-start; gap: var(--sp-4);
  padding: var(--sp-4) var(--sp-6);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-md);
  transition: box-shadow var(--dur-base) var(--ease);
}
.notice-item:hover { box-shadow: var(--shadow-sm); }
.notice-item__date {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--color-text-muted);
  min-width: 96px;
  padding-top: 2px;
}
.notice-item__title { font-weight: 600; margin: 0 0 2px; }
.notice-item__excerpt { font-size: var(--fs-14); color: var(--color-text-muted); margin: 0; }
.notice-item__badge {
  display: inline-block;
  margin-left: var(--sp-2);
  padding: 1px 8px;
  font-size: var(--fs-12);
  font-weight: 600;
  border-radius: var(--radius-pill);
  background: var(--color-warning);
  color: white;
}

/* ---------- Timeline ---------- */
.timeline {
  display: grid;
  gap: var(--sp-4);
  margin-top: var(--sp-8);
}
.timeline__item {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  gap: var(--sp-6);
  align-items: center;
  padding: var(--sp-4) var(--sp-6);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.timeline__item.is-active {
  border-color: var(--color-accent);
  background: rgba(34, 184, 207, 0.06);
  box-shadow: var(--shadow-md);
}
.timeline__d {
  font-family: var(--font-mono);
  font-size: var(--fs-20);
  font-weight: 700;
  color: var(--color-primary);
}
.timeline__title { font-weight: 600; margin: 0; }
.timeline__date { font-size: var(--fs-12); color: var(--color-text-muted); font-family: var(--font-mono); }

@media (max-width: 640px) {
  .timeline__item { grid-template-columns: 80px 1fr; }
  .timeline__date { grid-column: 1 / -1; text-align: right; }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-bg-deep);
  color: var(--color-text-invert-muted);
  padding: var(--sp-16) 0 var(--sp-8);
  border-top: 1px solid var(--color-border-invert);
}
.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--sp-12);
  margin-bottom: var(--sp-12);
}
.site-footer h4 {
  color: var(--color-text-invert);
  font-size: var(--fs-14);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--sp-4);
}
.site-footer a { color: var(--color-text-invert-muted); }
.site-footer a:hover { color: var(--color-accent); }
.site-footer__list { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--sp-2); }
.site-footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-4);
  padding-top: var(--sp-6);
  border-top: 1px solid var(--color-border-invert);
  font-size: var(--fs-12);
}

@media (max-width: 768px) {
  .site-footer__grid { grid-template-columns: 1fr; gap: var(--sp-8); }
}

/* ---------- Gallery ---------- */
.gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-3);
  margin-top: var(--sp-12);
}
.gallery figure {
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--color-bg-soft);
  transition: transform var(--dur-base) var(--ease), box-shadow var(--dur-base) var(--ease);
}
.gallery figure:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.gallery img { width: 100%; height: 100%; object-fit: cover; }

@media (max-width: 768px) {
  .gallery { grid-template-columns: repeat(2, 1fr); }
}

.venue-photos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
  margin-top: var(--sp-8);
}
.venue-photos figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}
.venue-photos img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
}
.venue-photos figcaption {
  padding: var(--sp-3) var(--sp-4);
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: var(--color-bg-alt);
}
.venue-photos__title {
  font-size: var(--fs-14);
  font-weight: 600;
  color: var(--color-text);
}
.venue-photos__meta {
  font-size: var(--fs-12);
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .venue-photos { grid-template-columns: 1fr; }
}

/* ---------- Form shell ---------- */
.form-shell {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-12);
  margin-top: var(--sp-8);
  box-shadow: var(--shadow-sm);
}
@media (max-width: 640px) {
  .form-shell { padding: var(--sp-6); }
}

/* ---------- Alert / Notice banner ---------- */
.alert {
  display: flex;
  gap: var(--sp-3);
  align-items: flex-start;
  padding: var(--sp-4) var(--sp-5, 1.25rem);
  border-radius: var(--radius-md);
  margin-bottom: var(--sp-8);
  font-size: var(--fs-14);
  line-height: var(--lh-normal);
  border: 1px solid;
}
.alert--info {
  background: rgba(34, 184, 207, 0.08);
  border-color: rgba(34, 184, 207, 0.35);
  color: var(--color-primary-dark);
}
.alert__icon {
  display: inline-flex;
  flex-shrink: 0;
  color: var(--color-accent);
  margin-top: 1px;
}
.alert strong { color: var(--color-primary-dark); }

/* ---------- Block heading (small inline heading with icon) ---------- */
.block-heading {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-18);
  font-weight: 700;
  margin: 0 0 var(--sp-4);
  color: var(--color-text);
  letter-spacing: -0.005em;
}
.block-heading__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px; height: 32px;
  border-radius: 8px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  flex-shrink: 0;
}

/* ---------- Section divider (Key Dates sub-header inside Program) ---------- */
.section__divider {
  margin-top: var(--sp-16);
  padding-top: var(--sp-12);
  border-top: 1px solid var(--color-border);
}
.section--soft .section__divider { border-top-color: var(--color-border-strong); }
.section__divider .section__lead { margin-bottom: var(--sp-6); }

/* ---------- Notice + FAQ grid ---------- */
.notice-faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-12);
  margin-top: var(--sp-8);
}
@media (max-width: 900px) {
  .notice-faq-grid { grid-template-columns: 1fr; gap: var(--sp-8); }
}

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: 32px; left: 50%;
  transform: translateX(-50%) translateY(100px);
  padding: var(--sp-4) var(--sp-6);
  background: var(--color-bg-deep);
  color: var(--color-text-invert);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-toast);
  opacity: 0;
  transition: opacity var(--dur-slow) var(--ease), transform var(--dur-slow) var(--ease);
  pointer-events: none;
  font-size: var(--fs-14);
  font-weight: 500;
  max-width: min(90vw, 420px);
}
.toast.is-visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.toast--success { border-left: 4px solid var(--color-success); }
.toast--error { border-left: 4px solid var(--color-error); }

/* ---------- Subpage layout ---------- */
.subpage-hero {
  padding-top: calc(var(--header-height) + var(--sp-16));
  padding-bottom: var(--sp-12);
  background: linear-gradient(135deg, var(--color-bg-deep) 0%, var(--color-primary-dark) 100%);
  color: var(--color-text-invert);
  position: relative;
  overflow: hidden;
}
.subpage-hero::after {
  content: "";
  position: absolute;
  top: 0; right: -200px;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34,184,207,0.25) 0%, transparent 70%);
  pointer-events: none;
}
.subpage-hero__breadcrumb {
  font-size: var(--fs-12);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent-2);
  margin-bottom: var(--sp-3);
}
.subpage-hero__breadcrumb a { color: var(--color-accent-2); }
.subpage-hero h1 { color: var(--color-text-invert); margin-bottom: var(--sp-3); }
.subpage-hero p { color: var(--color-text-invert-muted); max-width: 720px; font-size: var(--fs-18); }

.subpage-body { padding: var(--sp-16) 0; background: var(--color-bg-soft); }
.subpage-body__inner {
  max-width: 880px;
  margin: 0 auto;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-12);
  box-shadow: var(--shadow-sm);
}

.steps {
  display: flex;
  gap: var(--sp-4);
  margin-bottom: var(--sp-12);
  padding-bottom: var(--sp-6);
  border-bottom: 1px solid var(--color-border);
}
.step {
  flex: 1;
  display: flex; align-items: center; gap: var(--sp-3);
  font-size: var(--fs-14);
  color: var(--color-text-muted);
}
.step__num {
  width: 32px; height: 32px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  font-weight: 700;
  font-size: var(--fs-14);
}
.step.is-active { color: var(--color-primary); font-weight: 600; }
.step.is-active .step__num { background: var(--color-primary); color: white; border-color: var(--color-primary); }

@media (max-width: 768px) {
  .subpage-body__inner { padding: var(--sp-6); }
  .steps { flex-direction: column; gap: var(--sp-2); border-bottom: 0; padding-bottom: 0; }
}