/* ========================================
   ImageTools — Add Border Page Styles
   ======================================== */

/* --- Tool Header --- */
.tool-header { text-align: center; padding: 48px 0 32px; position: relative; z-index: 1; }
.tool-header .section-label { margin-left: auto; margin-right: auto; }
.tool-header .section-title { margin-left: auto; margin-right: auto; }
.tool-header .section-subtitle { margin-left: auto; margin-right: auto; margin-bottom: 24px; }

.formats-bar { display: flex; align-items: center; justify-content: center; gap: 8px; flex-wrap: wrap; }
.format-badge { padding: 4px 12px; background: var(--color-bg-tertiary); border: 1px solid var(--color-border); border-radius: 100px; font-size: 0.75rem; font-weight: 500; color: var(--color-text-secondary); }

/* --- Upload Zone --- */
.upload-zone { border: 2px dashed var(--color-border); border-radius: var(--radius-xl); padding: 48px 24px; text-align: center; cursor: pointer; transition: all var(--transition-normal); background: var(--color-glass); }
.upload-zone:hover, .upload-zone.drag-over { border-color: var(--color-border-accent); background: rgba(var(--glow-rgb), 0.03); }
.upload-zone-icon { width: 48px; height: 48px; margin: 0 auto 16px; color: var(--color-accent); }
.upload-zone-icon i { width: 48px; height: 48px; }
.upload-zone-text { font-size: 1rem; font-weight: 500; color: var(--color-text); margin-bottom: 8px; }
.upload-zone-subtext { font-size: 0.875rem; color: var(--color-text-muted); }
.upload-zone input[type="file"] { display: none; }

/* --- Main Workspace --- */
.workspace { margin-top: 32px; display: none; flex-direction: column; background: var(--color-bg-secondary); border: 1px solid var(--color-border); border-radius: var(--radius-xl); position: relative; overflow: hidden; }
.workspace.active { display: flex; }

/* --- Workspace Controls --- */
.workspace-controls { display: flex; align-items: center; justify-content: space-between; padding: 16px 24px; border-bottom: 1px solid var(--color-border); background: var(--color-bg); flex-wrap: wrap; gap: 16px; z-index: 20; border-radius: var(--radius-xl) var(--radius-xl) 0 0; }
.controls-left { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.controls-right { display: flex; align-items: center; gap: 12px; }

/* Mode Toggle */
.mode-toggle { display: flex; background: var(--color-glass); border: 1px solid var(--color-border); border-radius: var(--radius-sm); padding: 3px; }
.mode-btn { display: flex; align-items: center; gap: 6px; padding: 6px 12px; font-size: 0.8125rem; font-family: var(--font-sans); color: var(--color-text-muted); background: transparent; border: none; border-radius: 6px; cursor: pointer; transition: all var(--transition-fast); white-space: nowrap; }
.mode-btn.active { background: var(--color-accent); color: var(--btn-primary-text); box-shadow: 0 2px 4px rgba(0,0,0,0.1); }

/* Options */
.slider-group { display: flex; align-items: center; gap: 10px; font-size: 0.8125rem; color: var(--color-text-secondary); background: var(--color-glass); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 8px 16px; }
.mini-slider { -webkit-appearance: none; appearance: none; width: 100px; height: 4px; background: var(--color-border); border-radius: 2px; outline: none; cursor: pointer; }
.mini-slider::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 16px; height: 16px; border-radius: 50%; background: var(--color-accent); cursor: pointer; }
.slider-value { font-weight: 600; color: var(--color-accent); min-width: 36px; text-align: right; font-family: var(--font-mono); }

.option-group { display: flex; align-items: center; gap: 10px; font-size: 0.8125rem; color: var(--color-text-secondary); background: var(--color-glass); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 6px 12px; }
.color-input { width: 32px; height: 32px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); cursor: pointer; background: transparent; padding: 2px; }

/* --- Border Stage (Side-by-Side) --- */
.border-stage { flex: 1; display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--color-border); overflow: hidden; max-height: 60vh; }
.image-panel { display: flex; flex-direction: column; background: var(--color-bg-tertiary); background-image: radial-gradient(rgba(15, 23, 42, 0.07) 1px, transparent 1px); background-size: 24px 24px; overflow: hidden; min-height: 0; }
.panel-header { padding: 12px 16px; font-size: 0.8125rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-text-secondary); background: var(--color-bg); border-bottom: 1px solid var(--color-border-subtle); text-align: center; }
.panel-body { flex: 1; display: flex; align-items: center; justify-content: center; padding: 24px; overflow: auto; position: relative; min-height: 0; }
.panel-body img { max-width: 100%; max-height: 100%; object-fit: contain; border-radius: var(--radius-sm); box-shadow: var(--shadow-md); }

/* Checkerboard pattern for transparency */
.panel-body.checkerboard { background-color: #ffffff; background-image: linear-gradient(45deg, #e0e0e0 25%, transparent 25%), linear-gradient(-45deg, #e0e0e0 25%, transparent 25%), linear-gradient(45deg, transparent 75%, #e0e0e0 75%), linear-gradient(-45deg, transparent 75%, #e0e0e0 75%); background-size: 20px 20px; background-position: 0 0, 0 10px, 10px -10px, -10px 0px; }

/* --- Sticky Bottom Bar --- */
.workspace-bottom-bar { padding: 16px 24px; border-top: 1px solid var(--color-border); background: var(--color-bg); display: flex; align-items: center; justify-content: space-between; gap: 16px; z-index: 20; border-radius: 0 0 var(--radius-xl) var(--radius-xl); }
.summary-text { font-size: 0.875rem; color: var(--color-text-secondary); display: flex; align-items: center; gap: 8px; }
.bottom-actions { display: flex; align-items: center; gap: 12px; }

.btn-download { min-width: 180px; padding: 14px 32px; font-size: 1rem; font-weight: 600; box-shadow: 0 0 20px rgba(var(--glow-rgb), 0.2); }

/* --- Social Share Section --- */
.share-section { margin-top: 32px; padding: 32px; background: var(--color-glass); border: 1px solid var(--color-border); border-radius: var(--radius-lg); text-align: center; display: none; }
.share-section.active { display: block; }
.share-title { font-size: 1rem; font-weight: 500; margin-bottom: 6px; }
.share-subtitle { font-size: 0.875rem; color: var(--color-text-muted); margin-bottom: 20px; }
.share-buttons { display: flex; align-items: center; justify-content: center; gap: 12px; }
.share-btn { width: 44px; height: 44px; display: flex; align-items: center; justify-content: center; border-radius: 50%; border: 1px solid var(--color-border); background: var(--color-bg); color: var(--color-text-secondary); transition: all var(--transition-fast); }
.share-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.share-btn.twitter:hover { background: #000; color: #fff; border-color: #000; }
.share-btn.facebook:hover { background: #1877F2; color: #fff; border-color: #1877F2; }
.share-btn.linkedin:hover { background: #0A66C2; color: #fff; border-color: #0A66C2; }
.share-btn.whatsapp:hover { background: #25D366; color: #fff; border-color: #25D366; }
.share-btn svg { width: 20px; height: 20px; fill: currentColor; }

/* --- Responsive --- */
@media (max-width: 768px) {
  .workspace-controls { flex-direction: column; align-items: stretch; }
  .controls-left { justify-content: center; }
  .border-stage { grid-template-columns: 1fr; max-height: 80vh; }
  .workspace-bottom-bar { flex-direction: column; text-align: center; }
  .btn-download { width: 100%; }
}