/* style.css — MAKETH Components & Sections */

/* ============================================
   GLOBAL TYPOGRAPHY
   ============================================ */
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.section-title {
  font-size: var(--text-3xl);
  color: var(--color-gold);
  margin-bottom: var(--space-lg);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2xl);
  font-family: var(--font-body);
  font-weight: 400;
}

p {
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text-muted);
  max-width: 65ch;
}

/* ============================================
   LAYOUT
   ============================================ */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding-inline: var(--content-padding);
}

.container--narrow {
  max-width: var(--max-width-narrow);
}

section {
  padding-block: var(--space-4xl);
  position: relative;
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-md) 0;
  transition: background 400ms var(--ease-out), padding 300ms var(--ease-out);
}

.nav.scrolled {
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: var(--space-sm) 0;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.nav__logo {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  transition: opacity var(--transition-interactive);
}
.nav__logo:hover {
  opacity: 0.7;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color var(--transition-interactive);
  position: relative;
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-text);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-gold);
  transition: width 300ms var(--ease-out);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

.nav__lang {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--text-sm);
  color: var(--color-text-dim);
  margin-left: var(--space-md);
}

.nav__lang-btn {
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-dim);
  transition: color var(--transition-interactive);
  font-family: var(--font-body);
}

.nav__lang-btn.active {
  color: var(--color-text);
}

.nav__lang-btn:hover {
  color: var(--color-text);
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  cursor: pointer;
}

.nav__hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--color-text);
  transition: transform 300ms var(--ease-out), opacity 200ms var(--ease-out);
}

.nav__hamburger.open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav__hamburger.open span:nth-child(2) {
  opacity: 0;
}
.nav__hamburger.open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile nav */
.nav__mobile {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.97);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  opacity: 0;
  transition: opacity 300ms var(--ease-out);
}

.nav__mobile.open {
  display: flex;
  opacity: 1;
}

.nav__mobile-link {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--color-text-muted);
  transition: color var(--transition-interactive);
}

.nav__mobile-link:hover {
  color: var(--color-gold);
}

@media (max-width: 768px) {
  .nav__links {
    display: none;
  }
  .nav__lang {
    margin-left: auto;
  }
  .nav__hamburger {
    display: flex;
  }
}

/* ============================================
   HERO
   ============================================ */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  overflow: hidden;
  padding: 0;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0,0,0,0.95) 0%,
    rgba(0,0,0,0.5) 35%,
    rgba(0,0,0,0.2) 60%,
    rgba(0,0,0,0.3) 100%
  );
  z-index: 1;
}

.hero__content {
  position: relative;
  z-index: 2;
  padding: var(--space-3xl) var(--content-padding);
  padding-bottom: clamp(3rem, 8vh, 6rem);
  width: 100%;
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 700;
  color: var(--color-gold);
  letter-spacing: -0.03em;
  line-height: 0.9;
  margin-bottom: var(--space-md);
}

.hero__tagline {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  color: var(--color-accent);
  font-weight: 400;
  letter-spacing: 0.02em;
}

.hero__scroll {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

.hero__scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, transparent, var(--color-text-muted));
  animation: scrollPulse 2s var(--ease-in-out) infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.6); transform-origin: top; }
  50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
}

/* ============================================
   ABOUT
   ============================================ */
.about {
  padding-block: var(--space-5xl);
}

.about__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.about__text p {
  font-size: var(--text-lg);
  line-height: 1.8;
  color: var(--color-text-muted);
}

.about__image {
  position: relative;
  overflow: hidden;
}

.about__image img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  filter: brightness(0.8);
}

@media (max-width: 768px) {
  .about__inner {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }
  .about__image {
    order: -1;
  }
}

/* ============================================
   EPK
   ============================================ */
.epk {
  padding-block: var(--space-5xl);
}

.epk__bio {
  max-width: 65ch;
  margin-bottom: var(--space-3xl);
}

.epk__bio p {
  font-size: var(--text-base);
  line-height: 1.8;
}

/* Photo Grid */
.epk__gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: var(--space-sm);
  margin-bottom: var(--space-3xl);
}

.epk__gallery-item {
  overflow: hidden;
  position: relative;
}

.epk__gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 600ms var(--ease-out);
}

.epk__gallery-item:hover img {
  transform: scale(1.03);
}

.epk__gallery-item:first-child {
  grid-column: 1 / 3;
  grid-row: 1 / 3;
}

.epk__gallery-item:first-child img {
  aspect-ratio: 3 / 4;
}

.epk__gallery-item:not(:first-child) img {
  aspect-ratio: 1 / 1;
}

@media (max-width: 768px) {
  .epk__gallery {
    grid-template-columns: 1fr 1fr;
  }
  .epk__gallery-item:first-child {
    grid-column: 1 / -1;
    grid-row: auto;
  }
  .epk__gallery-item:first-child img {
    aspect-ratio: 16 / 9;
  }
}

/* Key Facts */
.epk__facts {
  margin-bottom: var(--space-3xl);
}

.epk__facts h3 {
  font-size: var(--text-xl);
  color: var(--color-text);
  margin-bottom: var(--space-lg);
  font-family: var(--font-display);
}

.epk__facts-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-md);
}

.epk__fact {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
}

.epk__fact-label {
  font-size: var(--text-xs);
  color: var(--color-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-xs);
}

.epk__fact-value {
  font-size: var(--text-base);
  color: var(--color-text);
  font-weight: 500;
}

/* Tech Rider */
.epk__rider {
  margin-bottom: var(--space-2xl);
}

.epk__rider-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  font-weight: 500;
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
  width: 100%;
  text-align: left;
  transition: color var(--transition-interactive);
  font-family: var(--font-body);
}

.epk__rider-toggle:hover {
  color: var(--color-text);
}

.epk__rider-toggle svg {
  transition: transform 300ms var(--ease-out);
  flex-shrink: 0;
}

.epk__rider-toggle.open svg {
  transform: rotate(180deg);
}

.epk__rider-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 400ms var(--ease-out);
}

.epk__rider-content.open {
  max-height: 400px;
}

.epk__rider-list {
  padding: var(--space-lg) 0;
}

.epk__rider-list li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.epk__rider-list li strong {
  color: var(--color-text);
  font-weight: 500;
}

/* Download button */
.btn--outline {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: background var(--transition-interactive), color var(--transition-interactive);
}

.btn--outline:hover {
  background: var(--color-accent);
  color: #000;
}

/* ============================================
   LYRICS
   ============================================ */
.lyrics {
  padding-block: var(--space-5xl);
  min-height: 80vh;
}

/* EP-level tabs (P.O.C I, II, III) */
.lyrics__ep-tabs {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.lyrics__ep-tab {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-dim);
  padding: var(--space-xs) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  transition: all var(--transition-interactive);
  font-family: var(--font-body);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.lyrics__ep-tab:hover:not(.disabled) {
  color: var(--color-text-muted);
  border-color: var(--color-text-dim);
}

.lyrics__ep-tab.active {
  color: var(--color-gold);
  border-color: var(--color-gold);
}

.lyrics__ep-tab.disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.lyrics__coming-soon {
  font-weight: 400;
  font-style: italic;
  text-transform: none;
}

/* Track-level tabs */
.lyrics__tabs {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-md);
  flex-wrap: wrap;
}

.lyrics__tab {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-dim);
  padding: var(--space-sm) var(--space-md);
  transition: color var(--transition-interactive);
  font-family: var(--font-body);
  letter-spacing: 0.03em;
}

.lyrics__tab:hover {
  color: var(--color-text-muted);
}

.lyrics__tab.active {
  color: var(--color-gold);
}

.lyrics__tab.disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.lyrics__track {
  display: none;
}

.lyrics__track.active {
  display: block;
}

/* Section labels (Verse 1:, Chorus:, etc.) */
.lyrics__section-label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-gold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding-top: var(--space-xl);
  padding-bottom: var(--space-sm);
  font-family: var(--font-body);
  opacity: 0.7;
}

.lyrics__section-label:first-child {
  padding-top: 0;
}

.lyrics__line {
  padding: var(--space-xs) 0;
  cursor: default;
  position: relative;
}

.lyrics__line span {
  font-size: var(--text-base);
  color: var(--color-text);
  font-weight: 400;
  line-height: 1.8;
  transition: color 300ms var(--ease-out);
}

.lyrics__line:hover span {
  color: var(--color-accent);
}

/* Annotation */
.lyrics__annotation {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%) translateX(10px);
  background: rgba(221,184,221,0.1);
  border-left: 2px solid var(--color-accent);
  padding: var(--space-sm) var(--space-md);
  max-width: 280px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 300ms var(--ease-out), transform 300ms var(--ease-out);
  font-size: var(--text-xs);
  color: var(--color-accent);
}

.lyrics__line:hover .lyrics__annotation {
  opacity: 1;
  transform: translateY(-50%) translateX(0);
}

.lyrics__placeholder-note {
  font-size: var(--text-xs);
  color: var(--color-text-dim);
  font-style: italic;
  margin-top: var(--space-xl);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

@media (max-width: 768px) {
  .lyrics__annotation {
    position: relative;
    right: auto;
    top: auto;
    transform: none;
    max-width: 100%;
    margin-top: var(--space-sm);
  }
  .lyrics__line:hover .lyrics__annotation {
    transform: none;
  }
}

/* ============================================
   LINKS / SMART LINK HUB
   ============================================ */
.links {
  padding-block: var(--space-5xl);
}

.links__banner {
  background: var(--color-accent);
  color: #000;
  text-align: center;
  padding: var(--space-md) var(--space-lg);
  font-weight: 700;
  font-size: var(--text-base);
  margin-bottom: var(--space-2xl);
  letter-spacing: 0.02em;
}

.links__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  max-width: 720px;
  margin: 0 auto;
}

@media (max-width: 600px) {
  .links__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.link-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-xl) var(--space-md);
  background: var(--color-surface);
  border: 1px solid transparent;
  transition: border-color 300ms var(--ease-out), background 300ms var(--ease-out), box-shadow 300ms var(--ease-out);
  text-align: center;
}

.link-card:hover {
  border-color: var(--color-accent);
  background: var(--color-surface-hover);
  box-shadow: 0 0 20px rgba(221,184,221,0.08);
}

.link-card__icon {
  width: 32px;
  height: 32px;
  color: var(--color-text);
  opacity: 0.8;
}

.link-card__name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.03em;
}

/* ============================================
   SEOUL MAP
   ============================================ */
.seoul {
  padding-block: var(--space-5xl);
  overflow: hidden;
}

.seoul__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.seoul__map-container {
  position: relative;
  aspect-ratio: 1 / 1;
  max-width: 500px;
}

.seoul__map-svg {
  width: 100%;
  height: 100%;
}

.seoul__dot {
  cursor: pointer;
  transition: r 300ms var(--ease-out);
}

.seoul__dot:hover {
  r: 8;
}

.seoul__dot-glow {
  animation: dotGlow 3s var(--ease-in-out) infinite;
  pointer-events: none;
}

@keyframes dotGlow {
  0%, 100% { opacity: 0.2; r: 12; }
  50% { opacity: 0.5; r: 18; }
}

.seoul__locations {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.seoul__location {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-border);
  cursor: pointer;
  transition: padding-left 300ms var(--ease-out);
}

.seoul__location:hover,
.seoul__location.active {
  padding-left: var(--space-md);
}

.seoul__location-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text);
  margin-bottom: var(--space-xs);
  transition: color var(--transition-interactive);
}

.seoul__location:hover .seoul__location-name,
.seoul__location.active .seoul__location-name {
  color: var(--color-gold);
}

.seoul__location-track {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-gold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: var(--space-xs);
  opacity: 0.7;
  transition: opacity var(--transition-interactive);
}

.seoul__location:hover .seoul__location-track,
.seoul__location.active .seoul__location-track {
  opacity: 1;
}

.seoul__location-lyric {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-dim);
  font-style: italic;
  transition: color var(--transition-interactive);
}

.seoul__location:hover .seoul__location-lyric,
.seoul__location.active .seoul__location-lyric {
  color: var(--color-text-muted);
}

.seoul__location-desc {
  font-size: var(--text-sm);
  color: var(--color-text-dim);
  transition: color var(--transition-interactive);
}

.seoul__location:hover .seoul__location-desc,
.seoul__location.active .seoul__location-desc {
  color: var(--color-text-muted);
}

.seoul__atmosphere {
  margin-top: var(--space-2xl);
}

.seoul__atmosphere img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: brightness(0.6);
}

@media (max-width: 768px) {
  .seoul__inner {
    grid-template-columns: 1fr;
  }
  .seoul__map-container {
    max-width: 100%;
  }
}

/* ============================================
   CONTACT
   ============================================ */
.contact {
  padding-block: var(--space-5xl);
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

@media (max-width: 768px) {
  .contact__grid {
    grid-template-columns: 1fr;
  }
  .contact__image {
    display: none;
  }
}

.contact__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact__image {
  position: relative;
  overflow: hidden;
}

.contact__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.7;
  filter: grayscale(30%);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-group label {
  font-size: var(--text-xs);
  color: var(--color-text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: var(--space-md);
  font-size: var(--text-base);
  color: var(--color-text);
  transition: border-color var(--transition-interactive);
  font-family: var(--font-body);
  -webkit-appearance: none;
  appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1.5l5 5 5-5' stroke='%23999' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-md) center;
  padding-right: var(--space-2xl);
}

.btn--gold {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-2xl);
  background: var(--color-gold);
  color: #000;
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: none;
  transition: background var(--transition-interactive), transform var(--transition-interactive);
  cursor: pointer;
  font-family: var(--font-body);
}

.btn--gold:hover {
  background: #d4a830;
  transform: translateY(-1px);
}

.btn--gold:active {
  transform: translateY(0);
}

.contact__note {
  font-size: var(--text-sm);
  color: var(--color-text-dim);
  margin-top: var(--space-md);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: var(--space-3xl) 0;
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
}

.footer__social {
  display: flex;
  gap: var(--space-lg);
}

.footer__social-link {
  color: var(--color-text-dim);
  font-size: var(--text-sm);
  transition: color var(--transition-interactive);
}

.footer__social-link:hover {
  color: var(--color-text);
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-dim);
  text-align: center;
}

.footer__attribution {
  font-size: var(--text-xs);
  color: var(--color-text-dim);
}

.footer__attribution a {
  color: var(--color-text-dim);
  transition: color var(--transition-interactive);
}

.footer__attribution a:hover {
  color: var(--color-text-muted);
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.fade-in {
  opacity: 1;
}

@supports (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    animation: revealFade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 40%;
  }
}

@keyframes revealFade {
  to { opacity: 1; }
}

/* JS fallback for browsers without scroll-driven animations */
.fade-in-js {
  opacity: 0;
  transition: opacity 600ms var(--ease-out);
}

.fade-in-js.visible {
  opacity: 1;
}

/* ============================================
   LANGUAGE TOGGLE
   ============================================ */
[data-lang="en"] .text-ko,
[data-lang="ko"] .text-en {
  display: none;
}

/* ============================================
   UTILITY
   ============================================ */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}