/* ============================================================================
   BORDER DESIGNER POPUP
   ============================================================================ */

.border-designer-popup {
    position: fixed;
    background: var(--panel, #ffffff);
    border: 1px solid var(--border, #ddd);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    padding: 0;
    z-index: 10000;
    width: 240px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
}

.border-designer-popup.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* Header */
.border-designer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border, #ddd);
    background: var(--bg-subtle, #f9f9f9);
    border-radius: 8px 8px 0 0;
    cursor: move;
    user-select: none;
}

.border-designer-header h3 {
    margin: 0;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--muted, #666);
}

.border-close-btn {
    background: none;
    border: none;
    font-size: 20px;
    line-height: 1;
    color: var(--muted, #666);
    cursor: pointer;
    padding: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: background 0.15s, color 0.15s;
}

.border-close-btn:hover {
    background: var(--border, #e5e7eb);
    color: var(--text, #333);
}

/* Content */
.border-designer-content {
    padding: 10px;
}

/* Sections */
.border-section {
    margin-bottom: 10px;
}

.border-section:last-of-type {
    margin-bottom: 0;
}

.border-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--muted, #666);
    margin-bottom: 6px;
    letter-spacing: 0.5px;
}

/* Outline Buttons */
.border-outline-row {
    display: flex;
    gap: 6px;
}

.border-outline-btn {
    flex: 1;
    padding: 4px 8px;
    font-size: 18px;
    font-weight: 400;
    letter-spacing: 0;
    border: 1px solid #2563eb;
    background: #3b82f6;
    color: white;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.15s;
    line-height: 1;
}

.border-outline-btn:hover {
    background: #2563eb;
    border-color: #1d4ed8;
}

.border-outline-btn:active {
    transform: scale(0.95);
}

/* Edge Buttons */
.border-edges-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 6px;
}

.border-edge-apply-btn {
    padding: 4px 8px;
    font-size: 18px;
    font-weight: 400;
    letter-spacing: 0;
    border: 1px solid #2563eb;
    background: #3b82f6;
    color: white;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.15s;
    line-height: 1;
}

.border-edge-apply-btn:hover {
    background: #2563eb;
    border-color: #1d4ed8;
}

.border-edge-apply-btn:active {
    transform: scale(0.95);
}

/* Clear All Button */
.border-clear-all-btn {
    width: 100%;
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.8px;
    border: 1px solid #2563eb;
    background: #3b82f6;
    color: white;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.15s;
}

.border-clear-all-btn:hover {
    background: #2563eb;
    border-color: #1d4ed8;
}

.border-clear-all-btn:active {
    transform: scale(0.95);
}

/* Style Row */
.border-style-row {
    display: flex;
    gap: 6px;
    align-items: center;
}

.border-style-select,
.border-width-select {
    flex: 1;
    height: 28px;
    padding: 0 6px;
    font-size: 13px;
    border: 1px solid var(--border, #ddd);
    border-radius: 4px;
    background: var(--bg, #ffffff);
    color: var(--text, #333);
    cursor: pointer;
    transition: border-color 0.15s;
}

.border-style-select:hover,
.border-width-select:hover {
    border-color: var(--border, #ddd);
}

.border-style-select:focus,
.border-width-select:focus {
    outline: none;
    border-color: var(--border, #ddd);
    box-shadow: none;
}

.border-color-input {
    width: 50px;
    height: 28px;
    padding: 2px;
    border: 1px solid var(--border, #ddd);
    border-radius: 4px;
    cursor: pointer;
    transition: border-color 0.15s;
}

.border-color-input:hover {
    border-color: var(--border, #ddd);
}

.border-color-input:focus {
    outline: none;
    border-color: var(--border, #ddd);
    box-shadow: none;
}