:root {
  color-scheme: dark;
  --bg: #0b0b0a;
  --bg-deep: #050505;
  --ink: #f2f2f0;
  --ink-soft: #b7b3ad;
  --accent: #f2f2f0;
  --accent-2: #7a7a77;
  --card: rgba(16, 16, 16, 0.85);
  --border: rgba(255, 255, 255, 0.1);
  --radius: 18px;
  --font-body: "IBM Plex Sans", system-ui, sans-serif;
  --font-display: "Fraunces", serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: radial-gradient(circle at 30% -10%, #1a1a19, #0b0b0a 55%, #060606 100%);
  min-height: 100vh;
  position: relative;
}

.top {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 28px 6vw 10px;
  gap: 20px;
}

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

.dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #fff;
}

.title {
  margin: 0;
  font-weight: 700;
  font-family: var(--font-display);
  font-size: 1.2rem;
}

.subtitle {
  margin: 4px 0 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.api-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(15, 15, 15, 0.8);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 10px;
}

.api-box label {
  font-size: 0.8rem;
  color: var(--ink-soft);
}

.api-box input {
  border: none;
  background: transparent;
  font-family: var(--font-mono);
  width: 220px;
  outline: none;
}

.api-box button {
  border: none;
  background: #fff;
  color: #111;
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
}

.layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(320px, 2fr);
  gap: 26px;
  padding: 20px 6vw 80px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px 24px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(10px);
}

h1,
h2,
h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
}

.tabs {
  display: flex;
  gap: 8px;
  margin: 20px 0 12px;
}

.tab {
  border: 1px solid var(--border);
  background: rgba(20, 20, 20, 0.7);
  color: var(--ink);
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
}

.tab.is-active {
  background: #fff;
  color: #111;
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
}

.drop {
  display: flex;
  border: 2px dashed rgba(255, 255, 255, 0.25);
  padding: 20px;
  border-radius: 14px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  background: rgba(15, 15, 15, 0.8);
  min-height: 90px;
}

.drop input {
  display: none;
}

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

.field span {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
}

.field input,
select {
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(10, 10, 10, 0.9);
  color: var(--ink);
  font-family: var(--font-body);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.block {
  margin-top: 20px;
}

.session-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}

.hint {
  color: var(--ink-soft);
  font-size: 0.9rem;
  margin: 7px 0 0;
}

.actions {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

button {
  border: 1px solid var(--border);
  background: rgba(20, 20, 20, 0.7);
  color: var(--ink);
  padding: 9px 12px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
}

button.primary {
  border: none;
  background: #fff;
  color: #111;
}

.viewer-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.pager {
  display: flex;
  align-items: center;
  gap: 8px;
}

.sheet {
  margin-top: 10px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(10, 10, 10, 0.8);
  padding: 14px;
  display: grid;
  grid-template-columns: repeat(var(--cols, 2), minmax(0, 1fr));
  grid-template-rows: repeat(var(--rows, 3), 1fr);
  gap: 10px;
  min-height: 560px;
}

.cell {
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  background: rgba(5, 5, 5, 0.92);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.image-box {
  position: relative;
  min-height: 100px;
  flex: 0 0 68%;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  background: #000;
}

.image-box img {
  width: 100%;
  height: auto;
  object-fit: contain;
  object-position: top center;
  max-height: 100%;
}

.image-box .delete {
  position: absolute;
  top: 6px;
  right: 6px;
  padding: 4px 8px;
  font-size: 0.78rem;
}

.note-space {
  flex: 1;
  padding: 8px;
  border-top: 1px dashed rgba(255, 255, 255, 0.16);
  background: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent 22px,
    rgba(255, 255, 255, 0.08) 22px,
    rgba(255, 255, 255, 0.08) 23px
  );
}

.empty {
  color: var(--ink-soft);
  padding: 10px;
  font-size: 0.9rem;
}

.removed {
  margin-top: 12px;
  border-top: 1px solid var(--border);
  padding-top: 10px;
}

.removed-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.removed-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 8px;
}

.removed-item {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(10, 10, 10, 0.9);
  padding: 6px;
}

.removed-item img {
  width: 100%;
  border-radius: 8px;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.removed-item button {
  width: 100%;
  margin-top: 6px;
}

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .api-box {
    width: 100%;
    justify-content: space-between;
  }

  .api-box input {
    width: 100%;
    min-width: 0;
  }

  .top {
    flex-direction: column;
    align-items: stretch;
  }

  .sheet {
    min-height: 420px;
  }
}