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

:root {
  --bg: #f8f7f4;
  --surface: #ffffff;
  --text: #1c1c1c;
  --text-muted: #666666;
  --accent: #8b1a1a;
  --border: #e5e5e5;
  --nav-bg: rgba(248, 247, 244, 0.95);
}

body.dark {
  --bg: #141414;
  --surface: #1e1e1e;
  --text: #f0f0f0;
  --text-muted: #999999;
  --border: #2e2e2e;
  --nav-bg: rgba(20, 20, 20, 0.95);
}

body {
  font-family: "Noto Sans KR", "Apple SD Gothic Neo", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  transition: background 0.3s, color 0.3s;
  scroll-behavior: smooth;
}

/* === HEADER / NAV === */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s, border-color 0.3s;
}

.nav {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 120px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  text-decoration: none;
}

.nav-logo-main {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.nav-logo-kr {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text);
}

.nav-logo-phonetic {
  font-size: 24px;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

.nav-logo-sub {
  font-size: 28px;
  color: var(--text-muted);
  border-left: 1px solid var(--border);
  padding-left: 10px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 4px;
  margin-left: auto;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  padding: 6px 10px;
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
  white-space: nowrap;
}

.nav-links a:hover {
  color: var(--text);
  background: var(--border);
}

.nav-controls {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.ctrl-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  transition: border-color 0.2s, background 0.2s;
}

.ctrl-btn:hover {
  background: var(--border);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 22px;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}

/* === HERO === */
.hero {
  position: relative;
  height: 65vh;
  min-height: 380px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: url("iaido_image_01.jpg") center/cover no-repeat;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.62);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: white;
  padding: 0 24px;
}

.hero-label {
  font-size: 12px;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(3.5rem, 12vw, 7rem);
  font-weight: 700;
  line-height: 1.05;
  margin-bottom: 24px;
}

.hero-title span {
  display: block;
  font-size: 0.4em;
  letter-spacing: 0.4em;
  color: rgba(255, 255, 255, 0.5);
  font-weight: 300;
  margin-top: 8px;
}

.hero-desc {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 36px;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

.btn-primary {
  display: inline-block;
  background: white;
  color: #111;
  padding: 14px 36px;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.05em;
  transition: background 0.2s, transform 0.2s;
}

.btn-primary:hover {
  background: rgba(255, 255, 255, 0.88);
  transform: translateY(-2px);
}

/* === SECTIONS === */
.section {
  padding: 88px 0;
}

.section-dark {
  background: #0f0f0f;
  color: #f0f0f0;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-label {
  font-size: 11px;
  letter-spacing: 0.4em;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 10px;
}

.section-dark .section-label {
  color: #c8a97e;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  margin-bottom: 44px;
  line-height: 1.2;
}

.section-dark .section-title {
  color: #f0f0f0;
}

/* === ABOUT === */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}

.about-text p {
  color: var(--text-muted);
  line-height: 1.95;
  margin-bottom: 18px;
  font-size: 15px;
}

.about-cards {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.about-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.about-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.about-card-icon {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
  width: 42px;
  height: 42px;
  background: #fdf0f0;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

body.dark .about-card-icon {
  background: rgba(139, 26, 26, 0.18);
}

.about-card h3 {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 5px;
  color: var(--text);
}

.about-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.65;
}

/* === RYUHA === */
.ryuha-desc {
  max-width: 720px;
  line-height: 1.95;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 52px;
}

.ryuha-stats {
  display: flex;
  gap: 56px;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stat-num {
  font-size: 3rem;
  font-weight: 700;
  color: white;
  line-height: 1;
}

.stat-plus {
  font-size: 1.5rem;
  color: #c8a97e;
}

.stat-label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
  letter-spacing: 0.05em;
}

/* === GALLERY === */
.gallery-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.gallery-upload-btn {
  display: inline-flex;
  align-items: center;
  background: var(--accent);
  color: white;
  padding: 10px 20px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: 4px;
  transition: opacity 0.2s, transform 0.2s;
}

.gallery-upload-btn:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}

.gallery-item {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
}

.gallery-item img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
  cursor: pointer;
  transition: transform 0.3s, box-shadow 0.3s;
}

.gallery-item img:hover {
  transform: scale(1.03);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
}

.gallery-delete {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(0, 0, 0, 0.6);
  color: white;
  border: none;
  border-radius: 50%;
  width: 30px;
  height: 30px;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s;
}

.gallery-item:hover .gallery-delete {
  opacity: 1;
}

/* 갤러리 제목 링크 */
.gallery-title-link {
  color: inherit;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color 0.2s;
}

.gallery-title-link:hover {
  border-bottom-color: var(--accent);
}

/* === GALLERY PAGINATION === */
.gallery-wrapper {
  position: relative;
}

.gallery-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  background: rgba(0, 0, 0, 0.55);
  color: white;
  border: none;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.25s, background 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gallery-nav-prev { left: -20px; }
.gallery-nav-next { right: -20px; }

.gallery-nav:hover { background: rgba(0, 0, 0, 0.8); }
.gallery-nav:disabled { opacity: 0 !important; cursor: default; }

.gallery-wrapper:hover .gallery-nav:not(:disabled) {
  opacity: 1;
}

.gallery-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
}

.gallery-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  padding: 0;
}

.gallery-dot.active {
  background: var(--accent);
  transform: scale(1.3);
}

/* 페이지 전환 애니메이션 */
.gallery.slide-out-left  { animation: slideOutLeft  0.22s ease forwards; }
.gallery.slide-in-right  { animation: slideInRight  0.22s ease forwards; }
.gallery.slide-out-right { animation: slideOutRight 0.22s ease forwards; }
.gallery.slide-in-left   { animation: slideInLeft   0.22s ease forwards; }

@keyframes slideOutLeft  { to { opacity: 0; transform: translateX(-40px); } }
@keyframes slideInRight  { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: none; } }
@keyframes slideOutRight { to { opacity: 0; transform: translateX(40px); } }
@keyframes slideInLeft   { from { opacity: 0; transform: translateX(-40px); } to { opacity: 1; transform: none; } }

/* === LIGHTBOX === */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
  z-index: 999;
  align-items: center;
  justify-content: center;
  padding: 24px;
  cursor: pointer;
}

.lightbox.open {
  display: flex;
}

.lightbox img {
  max-width: 100%;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 6px;
  cursor: default;
}

.lightbox-close {
  position: absolute;
  top: 16px;
  right: 20px;
  background: none;
  border: none;
  color: white;
  font-size: 40px;
  line-height: 1;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.lightbox-close:hover {
  opacity: 1;
}

/* === VIDEO === */
.video-wrap {
  border-radius: 12px;
  overflow: hidden;
  background: #000;
  line-height: 0;
}

.video-wrap video {
  width: 100%;
  max-height: 520px;
  display: block;
}

/* === SCHEDULE === */
.schedule-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px 48px;
  display: grid;
  grid-template-columns: auto 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.day-badge {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 10px 22px;
  border-radius: 99px;
  font-size: 14px;
  font-weight: 700;
  white-space: nowrap;
}

.time-block {
  display: flex;
  align-items: center;
  gap: 14px;
}

.time-icon {
  font-size: 30px;
}

.time-label {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}

.time-value {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
}

.schedule-note p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.9;
}

/* === MAP (오시는 길) === */
.map-layout {
  display: grid;
  grid-template-columns: 1fr 1.8fr;
  gap: 40px;
  align-items: center;
}

.map-info p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 24px;
  line-height: 1.7;
  font-weight: 500;
}

.map-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.map-link-btn {
  display: block;
  padding: 13px 20px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 700;
  text-align: center;
  transition: opacity 0.2s, transform 0.2s;
}

.map-link-btn:hover {
  opacity: 0.88;
  transform: translateY(-2px);
}

.map-link-kakao {
  background: #FEE500;
  color: #3a1d1d;
}

.map-link-naver {
  background: #03C75A;
  color: white;
}

.map-image img {
  width: 100%;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: block;
}

/* === CONTACT === */
.contact-desc {
  color: var(--text-muted);
  margin-bottom: 40px;
  font-size: 15px;
  line-height: 1.7;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.contact-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 32px 24px;
  text-align: center;
  transition: transform 0.2s, box-shadow 0.2s;
}

.contact-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.contact-icon {
  font-size: 30px;
  display: block;
  margin-bottom: 14px;
}

.contact-label {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.contact-value {
  font-size: 14px;
  color: var(--text);
  font-weight: 500;
  line-height: 1.5;
}

/* === FOOTER === */
.footer {
  background: #0a0a0a;
  color: rgba(255, 255, 255, 0.3);
  text-align: center;
  padding: 28px 24px;
  font-size: 13px;
}

/* === MOBILE === */
@media (max-width: 900px) {
  .nav-logo-kr       { font-size: 24px; }
  .nav-logo-phonetic { font-size: 14px; }
  .nav-logo-sub      { font-size: 16px; }
  .nav               { height: 80px; }

  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background: var(--nav-bg);
    border-bottom: 1px solid var(--border);
    padding: 12px 16px;
    gap: 2px;
    backdrop-filter: blur(10px);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 10px 12px;
    font-size: 15px;
  }

  .nav-controls {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .schedule-card {
    grid-template-columns: 1fr;
    padding: 28px;
    gap: 24px;
  }

  .map-layout {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .ryuha-stats {
    gap: 36px;
  }
}

@media (max-width: 480px) {
  .section {
    padding: 60px 0;
  }

  .hero-title {
    font-size: clamp(2.8rem, 14vw, 5rem);
  }
}