/* ============================================================
   Instagram Grid Splitter — Page Styles
   ============================================================ */

.ig-layout {
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - var(--header-height));
  margin-top: var(--header-height);
  padding: var(--space-6);
}

.ig-header {
  text-align: center;
  margin-bottom: var(--space-8);
}
.ig-header h1 {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  margin-bottom: var(--space-2);
}
.ig-header p {
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* --- Step Container --- */
.ig-steps {
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
}

/* --- Mode Selector --- */
.ig-mode-section {
  display: none;
}
.ig-mode-section.active {
  display: block;
}

.split-modes {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  justify-content: center;
  margin: var(--space-6) 0;
}
.split-mode-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-5);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-bg-card);
  cursor: pointer;
  transition: all var(--transition-base);
  min-width: 90px;
}
.split-mode-btn:hover {
  border-color: var(--color-border-hover);
  background: var(--color-bg-card-hover);
}
.split-mode-btn.active {
  border-color: var(--color-accent-blue);
  background: var(--color-accent-blue-glow);
  box-shadow: var(--shadow-glow-blue);
}
.split-mode-btn__grid {
  display: grid;
  gap: 2px;
  width: 36px;
  height: auto;
}
.split-mode-btn__grid span {
  background: var(--color-text-tertiary);
  border-radius: 2px;
  aspect-ratio: 1;
  transition: background var(--transition-fast);
}
.split-mode-btn.active .split-mode-btn__grid span {
  background: var(--color-accent-blue-light);
}
.split-mode-btn__label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-text-secondary);
}
.split-mode-btn.active .split-mode-btn__label {
  color: var(--color-accent-blue-light);
}

/* --- Preview Area --- */
.ig-preview-area {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  margin: var(--space-8) 0;
}

/* Split Preview */
.split-preview {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
}
.split-preview__title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
  text-align: center;
}
.split-preview__grid {
  display: grid;
  gap: 3px;
  max-width: 400px;
  margin: 0 auto;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.split-preview__tile {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  cursor: pointer;
}
.split-preview__tile canvas {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.split-preview__tile-number {
  position: absolute;
  top: 4px;
  left: 4px;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  color: white;
  font-size: 10px;
  font-weight: 700;
  border-radius: 50%;
}

/* IG Profile Mock */
.ig-mock {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  max-width: 400px;
  margin: 0 auto;
}
.ig-mock__title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-4);
  text-align: center;
}
.ig-mock__profile {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}
.ig-mock__avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}
.ig-mock__info {
  flex: 1;
}
.ig-mock__username {
  font-size: var(--font-size-sm);
  font-weight: 700;
}
.ig-mock__stats {
  display: flex;
  gap: var(--space-4);
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-top: var(--space-1);
}
.ig-mock__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}
.ig-mock__cell {
  aspect-ratio: 1;
  background: var(--color-surface);
  border-radius: 2px;
  overflow: hidden;
}
.ig-mock__cell canvas {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.ig-mock__cell--placeholder {
  background: var(--color-bg-tertiary);
}
.ig-mock__cell--new {
  border: 2px solid var(--color-accent-blue);
}

/* --- Download Section --- */
.ig-download {
  text-align: center;
  padding: var(--space-8);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  margin: var(--space-8) 0;
}
.ig-download__info {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}
.ig-download__buttons {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .ig-preview-area {
    grid-template-columns: 1fr;
  }
  .split-modes {
    gap: var(--space-2);
  }
  .split-mode-btn {
    min-width: 70px;
    padding: var(--space-3);
  }
}