*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Noto Sans KR", "Malgun Gothic", sans-serif;
  background:
    radial-gradient(circle at top, rgba(34, 197, 94, 0.12), transparent 20%),
    radial-gradient(circle at right, rgba(59, 130, 246, 0.12), transparent 24%),
    #091018;
  color: #e7eef7;
}

body.lock-scroll {
  overflow: hidden;
}

.page-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  padding: 28px 32px 24px;
  background: rgba(9, 16, 24, 0.86);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(18px);
}

.header-copy h1 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  letter-spacing: -0.04em;
}

.header-copy p {
  margin: 0;
}

.eyebrow {
  margin-bottom: 8px !important;
  color: #7dd3fc;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

#page-subtitle {
  margin-top: 8px;
  color: rgba(231, 238, 247, 0.66);
}

.viewer-toolbar {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.viewer-label {
  padding: 0 6px 0 12px;
  color: rgba(231, 238, 247, 0.58);
  font-size: 0.78rem;
}

.viewer-btn {
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: rgba(231, 238, 247, 0.78);
  font: inherit;
  font-size: 0.84rem;
  font-weight: 700;
  padding: 11px 16px;
  cursor: pointer;
}

.viewer-btn.active {
  background: linear-gradient(135deg, #0ea5e9, #2563eb);
  color: #fff;
  box-shadow: 0 12px 32px rgba(37, 99, 235, 0.26);
}

.grid-container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 32px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.card {
  overflow: hidden;
  border-radius: 20px;
  background: rgba(12, 20, 30, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.22);
  cursor: pointer;
  transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease;
}

.card:hover {
  transform: translateY(-6px);
  border-color: rgba(125, 211, 252, 0.4);
  box-shadow: 0 28px 60px rgba(0, 0, 0, 0.3);
}

.card-img-wrap {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: #04070b;
}

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

.tag-badge,
.lb-tag {
  display: inline-flex;
  align-items: center;
  padding: 6px 11px;
  border-radius: 999px;
  background: rgba(14, 165, 233, 0.16);
  border: 1px solid rgba(125, 211, 252, 0.24);
  color: #b9ecff;
  font-size: 0.72rem;
  font-weight: 700;
}

.tag-badge {
  position: absolute;
  top: 12px;
  left: 12px;
}

.card-body {
  padding: 16px 16px 18px;
}

.card-title {
  margin: 0 0 10px;
  font-size: 1.02rem;
}

.card-prompt {
  margin: 0 0 14px;
  color: rgba(231, 238, 247, 0.58);
  font-size: 0.78rem;
  line-height: 1.58;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
}

.copy-btn,
.lb-copy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 12px;
  background: linear-gradient(135deg, #0ea5e9, #2563eb);
  color: #fff;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 11px 16px;
  cursor: pointer;
}

.lb-copy-btn {
  width: 100%;
}

.lb-copy-btn.compact {
  width: auto;
  min-width: 160px;
}

.lb-copy-btn.copied {
  background: linear-gradient(135deg, #10b981, #059669);
}

.lightbox-overlay {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(3, 7, 13, 0.92);
  backdrop-filter: blur(10px);
  z-index: 50;
}

.lightbox-overlay.active {
  display: flex;
}

.lightbox-inner {
  width: min(94vw, 1360px);
  max-height: 90vh;
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(340px, 0.7fr);
  overflow: hidden;
  border-radius: 24px;
  background: #0b1320;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.44);
}

.lb-media {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  min-height: 0;
  background: #05090f;
  padding: 24px;
}

.lb-media img {
  max-width: 100%;
  max-height: calc(90vh - 48px);
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.lb-info {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
  padding: 32px 28px;
  background: #0c1624;
}

.lb-info h2,
.lb-fullscreen-title h2 {
  margin: 0;
  font-size: 1.45rem;
  letter-spacing: -0.04em;
}

.lb-prompt-label {
  color: rgba(231, 238, 247, 0.48);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.lb-prompt,
.lb-fullscreen-prompt {
  margin: 0;
  white-space: pre-wrap;
  color: rgba(231, 238, 247, 0.82);
  line-height: 1.74;
}

.lb-prompt {
  flex: 1;
  overflow: auto;
}

.lightbox-overlay.fullscreen-mode {
  background: rgba(1, 5, 10, 0.98);
}

.lightbox-overlay.fullscreen-mode .lightbox-inner {
  width: 100vw;
  height: 100vh;
  max-height: 100vh;
  display: block;
  border-radius: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}

.lb-fullscreen {
  position: relative;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(circle at top, rgba(59, 130, 246, 0.15), transparent 34%),
    radial-gradient(circle at bottom, rgba(16, 185, 129, 0.12), transparent 24%),
    #05070d;
}

.lb-fullscreen-media {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: 28px 28px 210px;
}

.lb-fullscreen-media img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 24px 60px rgba(0, 0, 0, 0.42));
}

.lb-fullscreen-bottom {
  position: absolute;
  left: 24px;
  right: 24px;
  bottom: 24px;
  padding: 20px 22px;
  border-radius: 24px;
  background: rgba(9, 14, 22, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
}

.lb-fullscreen-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.lb-fullscreen-title {
  min-width: 0;
}

.lb-fullscreen-title .lb-tag {
  margin-top: 10px;
}

.lb-fullscreen-prompt {
  max-height: 112px;
  overflow: auto;
}

.lb-close,
.lb-nav {
  position: absolute;
  z-index: 60;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.09);
  color: #fff;
  font-size: 1.2rem;
  cursor: pointer;
}

.lb-close {
  top: 18px;
  right: 18px;
}

.lb-nav {
  top: 50%;
  transform: translateY(-50%);
}

#lb-prev {
  left: 18px;
}

#lb-next {
  right: 18px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translate(-50%, 120%);
  padding: 12px 18px;
  border-radius: 999px;
  background: #10b981;
  color: #032312;
  font-weight: 800;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.24);
  transition: transform 0.22s ease;
  z-index: 70;
}

.toast.show {
  transform: translate(-50%, 0);
}

@media (max-width: 900px) {
  .page-header {
    padding: 22px 16px 18px;
  }

  .viewer-toolbar {
    width: 100%;
    flex-wrap: wrap;
  }

  .viewer-label {
    width: 100%;
    padding: 4px 6px 0 12px;
  }

  .grid-container {
    padding: 18px 16px 28px;
    gap: 18px;
  }

  .lightbox-inner {
    grid-template-columns: 1fr;
    width: min(96vw, 820px);
  }

  .lb-media {
    max-height: 45vh;
  }

  .lb-media img {
    max-height: calc(45vh - 48px);
  }

  .lightbox-overlay.fullscreen-mode .lightbox-inner {
    height: 100dvh;
    max-height: 100dvh;
  }

  .lb-fullscreen-media {
    padding: 76px 14px 194px;
  }

  .lb-fullscreen-bottom {
    left: 12px;
    right: 12px;
    bottom: 12px;
    padding: 16px;
    border-radius: 20px;
  }

  .lb-fullscreen-top {
    flex-direction: column;
  }

  .lb-copy-btn.compact {
    width: 100%;
  }
}