/**
 * Text Converter Common Styles
 * テキスト変換ツール共通スタイル
 *
 * Used by: RemoveSpaces, HTMLTAGRemover, and other simple text conversion tools
 *
 * Features:
 * - 2-column layout (input | result) - no scrolling needed
 * - Mobile-first responsive design
 * - Real-time conversion display
 * - Comprehensive mobile overflow prevention
 *
 * Version: 1.2 (Moved all grid styles to CSS, removed inline styles)
 */

/* ========================================
   1. Layout - 2 Column (Desktop First)
   ======================================== */
.converter-layout {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.converter-input-section {
    flex: 1;
    min-width: 0; /* Prevent flex overflow */
}

.converter-result-section {
    flex: 1;
    min-width: 0;
}

/* ========================================
   2. Textarea Wrapper Enhancements
   ======================================== */
.converter-layout .textarea-wrapper {
    position: relative;
}

.converter-layout .form-control {
    width: 100%;
    resize: vertical;
}

/* Character counter */
.char-counter {
    position: absolute;
    bottom: 8px;
    right: 8px;
    font-size: 12px;
    color: #6b7280;
    background: rgba(255, 255, 255, 0.9);
    padding: 4px 8px;
    border-radius: 4px;
    pointer-events: none;
}

/* Copy and Clear buttons */
.copy-btn,
.clear-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    padding: 6px 12px;
    font-size: 13px;
    border: 1px solid #d1d5db;
    background: #fff;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 5;
}

.copy-btn:hover,
.clear-btn:hover {
    background: #f9fafb;
    border-color: #0066cc;
    color: #0066cc;
}

.copy-btn:active,
.clear-btn:active {
    transform: scale(0.95);
}

/* ========================================
   2.5. Format Selector Grid (used in codec tools)
   ======================================== */
.format-selector-grid,
.format-selector-row {
    display: grid;
    gap: 16px;
    margin-bottom: 20px;
}

.format-selector-grid {
    grid-template-columns: 1fr 1fr;
}

.format-selector-row {
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    margin-bottom: 24px;
}

/* Comparison Grid (used in security sections) */
.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin: 16px 0;
}

/* Related Tools Grid */
.related-tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-top: 16px;
}

/* Format Options Grid */
.format-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-top: 12px;
}

/* Use Cases Grid */
.usecases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
    margin-top: 16px;
}

/* ========================================
   3. Responsive - Mobile (768px)
   ======================================== */
@media (max-width: 768px) {
    /* Switch to single column layout */
    .converter-layout {
        flex-direction: column;
        gap: 16px;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }

    /* Remove extra margins/padding on mobile */
    .converter-input-section,
    .converter-result-section {
        width: 100%;
        max-width: 100%;
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    /* Ensure form-group uses full width */
    .converter-layout .form-group {
        width: 100%;
        max-width: 100%;
        margin: 0;
        box-sizing: border-box;
    }

    /* Reduce textarea height on mobile */
    .converter-layout .form-control {
        min-height: 200px !important;
        width: 100% !important;
        max-width: 100%;
        box-sizing: border-box;
    }

    /* Adjust button sizes */
    .copy-btn,
    .clear-btn {
        padding: 5px 10px;
        font-size: 12px;
    }

    .char-counter {
        font-size: 11px;
        padding: 3px 6px;
    }

    /* CRITICAL: Reduce card padding on mobile to prevent overflow */
    .card {
        padding: 16px !important;
    }

    .card-body {
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
        overflow-x: hidden;
    }

    /* Ensure all child elements respect container width */
    .card-body > * {
        max-width: 100%;
        box-sizing: border-box;
    }

    /* Fix select dropdowns overflow */
    .form-control,
    select.form-control {
        width: 100% !important;
        max-width: 100%;
        box-sizing: border-box;
    }

    /* CRITICAL: Force all grids to single column on mobile */
    .format-selector-grid,
    .format-selector-row,
    .comparison-grid,
    .related-tools-grid,
    .format-grid,
    .usecases-grid {
        grid-template-columns: 1fr !important;
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }

    /* Ensure grid children don't overflow */
    .format-selector-grid > *,
    .format-selector-row > *,
    .comparison-grid > *,
    .related-tools-grid > *,
    .format-grid > *,
    .usecases-grid > * {
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
    }

    /* Fix format selector row button spacing */
    .format-selector-row button {
        margin-top: 8px;
        margin-bottom: 8px;
    }
}

/* ========================================
   4. Responsive - Small Mobile (480px)
   ======================================== */
@media (max-width: 480px) {
    .converter-layout {
        gap: 12px;
        padding: 0;
    }

    .converter-layout .form-control {
        min-height: 150px !important;
    }

    .copy-btn,
    .clear-btn {
        padding: 4px 8px;
        font-size: 11px;
    }

    .char-counter {
        font-size: 10px;
        bottom: 6px;
        right: 6px;
    }

    /* Extra aggressive card padding reduction on very small screens */
    .card {
        padding: 12px !important;
    }
}

/* ========================================
   5. Accessibility
   ======================================== */
.copy-btn:focus-visible,
.clear-btn:focus-visible {
    outline: 3px solid #0066cc;
    outline-offset: 2px;
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .copy-btn,
    .clear-btn {
        border-width: 2px;
    }
}

/* ========================================
   6. Print Styles
   ======================================== */
@media print {
    .copy-btn,
    .clear-btn {
        display: none;
    }

    .converter-layout {
        flex-direction: column;
    }

    .char-counter {
        display: none;
    }
}