/* tools/regex/css/style.css */

/* -------------------------------------------
   Variables
------------------------------------------- */
:root {
    /* Tool Specific Colors */
    --regex-color-match: rgba(255, 215, 0, 0.4);
    /* Match highlight (Yellowish) */
    --regex-color-match-border: rgba(255, 215, 0, 0.8);

    --regex-color-line-highlight: rgba(0, 188, 212, 0.4);
    /* Line Highlight (Cyan Tint) */

    --editor-bg: rgba(10, 15, 25, 0.6);
    --editor-font: 'Consolas', 'Monaco', 'Biz UDGothic', 'Meiryo', monospace;
    --editor-line-height: 1.6;
    --editor-font-size: 16px;
    /* Explicit size for alignment */

    --sidebar-width: 300px;
}

/* Light Mode Overrides */
body.theme-light {
    --regex-color-match: rgba(255, 165, 0, 0.3);
    --regex-color-match-border: rgba(255, 165, 0, 0.6);
    --regex-color-line-highlight: rgba(0, 188, 212, 0.4) !important;
    /* Cyan tint - Strong visibility */
    /* Cyan tint - Strong visibility */
    --editor-bg: var(--color-white);
}

body.theme-light.in-iframe {
    background-color: var(--color-white) !important;
}

/* -------------------------------------------
   Layout (Grid)
------------------------------------------- */
/* -------------------------------------------
   Layout (Grid)
------------------------------------------- */
.regex-app-grid {
    display: grid;
    grid-template-columns: 1fr var(--sidebar-width);
    gap: var(--spacing-lg);
    align-items: start;
}

/* Mobile: Stack everything */
@media (max-width: 900px) {
    .regex-app-grid {
        grid-template-columns: 1fr;
    }

    .sidebar-column {
        order: 2;
        /* Sidebar below editor on mobile */
    }
}

/* -------------------------------------------
   Card Components
------------------------------------------- */
.regex-controls-card {
    grid-column: 1 / -1;
    /* Span full width */
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    margin-bottom: 0;
    /* Handled by grid gap if not first item, but here it is top inside grid? No, I put it as first child. */
}

.editor-card,
.substitution-card,
.info-card,
.presets-card,
.cheat-sheet-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
    display: flex;
    flex-direction: column;
}

.card-header {
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(var(--color-accent-secondary-rgb), 0.05);
    border-bottom: 1px solid var(--card-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.label-main {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-accent-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.label-main::before {
    content: '';
    display: block;
    width: 4px;
    height: 14px;
    background: var(--color-accent-secondary);
    border-radius: 2px;
}

/* -------------------------------------------
   Input Group
------------------------------------------- */
.regex-input-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Custom Select Style */
.select-wrapper {
    position: relative;
    width: 100%;
}

.select-wrapper::after {
    content: '';
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 12px;
    height: 12px;
    background-color: var(--color-accent-secondary);
    -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E") no-repeat center;
    mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E") no-repeat center;
    pointer-events: none;
}

.cyber-select {
    appearance: none;
    -webkit-appearance: none;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    padding-right: 32px;
    color: var(--color-text);
    font-family: var(--font-primary);
    font-size: 0.95rem;
    cursor: pointer;
    width: 100%;
}

.cyber-select:focus,
.cyber-input:focus,
.cyber-textarea:focus {
    outline: none;
    border-color: var(--color-accent-primary);
    box-shadow: 0 0 0 2px rgba(var(--color-accent-primary-rgb), 0.2);
}

.cyber-select option {
    background: var(--card-bg);
    /* Fallback dark bg */
    color: var(--color-text);
}

/* Light Mode Specifics for form elements */
body.theme-light .cyber-select,
body.theme-light .cyber-input,
body.theme-light .regex-flags-input {
    background: var(--color-white);
    border-color: var(--input-border);
    color: var(--color-text-invert);
}

body.theme-light .cyber-select option {
    background: var(--color-white);
    color: var(--color-text-invert);
}

body.theme-light .regex-slash {
    color: var(--color-text-muted);
    font-weight: 500;
}

/* Fix vertical alignment */
.regex-slash {
    font-size: 1.5rem;
    color: var(--color-text-muted);
    font-weight: 300;
    line-height: 1;
    padding-top: 4px;
    /* Visual adjustment */
}

.regex-pattern-input {
    flex: 1 1 auto;
    /* Grow, shrink, auto basis */
    width: auto;
    font-family: var(--editor-font);
    font-size: 1.2rem;
    padding: var(--spacing-sm) var(--spacing-md);
    letter-spacing: 0.5px;
    min-width: 0;
    /* Prevent flex overflow */
}

.regex-flags-input {
    flex: 0 0 100px;
    /* Fixed width */
    width: 100px;
    font-family: var(--editor-font);
    text-align: center;
}

/* -------------------------------------------
   Editor Area (Overlay Magic)
------------------------------------------- */
.editor-body,
.substitution-body,
.presets-body,
.match-list-wrapper,
.cheat-sheet-body {
    padding: var(--spacing-md);
}

/* =========================================
   Tech Lead Refactor: Deterministic Editor Geometry
   ========================================= */

/* 1. Container - The Reference Frame */
.textarea-container {
    position: relative;
    width: 100%;
    min-height: 250px;
    background: var(--editor-bg);
    /* Base background color */
    border-radius: var(--radius-sm);
    border: 1px solid var(--input-border);
    overflow: hidden;
    /* Contains the absolute children */
    padding: 0;
    /* Strict Reset */
}

/* 2. Shared Geometry - The "DNA" of alignment */
.backdrop,
.source-editor {
    /* Layout */
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 1rem;
    /* Identical Padding */
    box-sizing: border-box;

    /* Typography - Strict Pixel Values to avoid rounding errors */
    font-family: var(--editor-font);
    font-size: 14px;
    /* Explicit pixel size */
    line-height: 24px;
    /* Explicit pixel height (integer) */
    letter-spacing: 0px;

    /* Wrapping */
    white-space: pre-wrap;
    word-wrap: break-word;
    overflow-wrap: break-word;

    /* Reset */
    border: none !important;
    outline: none !important;
    resize: none;
    /* Managed by container/JS */
}

/* 3. Layer Specifics */

/* Layer 1: Backdrop (Highlights) */
.backdrop {
    z-index: 1;
    overflow: hidden;
    /* No scrollbars, synced via JS */
    color: transparent !important;
    /* Hide raw text to prevent ghosting */
    background: transparent;
    pointer-events: none;
    /* Click-through */
}

/* Apply transparent color to ALL children to prevent Ghosting */
.backdrop * {
    color: transparent !important;
}

/* Layer 2: Foreground (Input) */
.source-editor {
    z-index: 2;
    overflow-y: scroll;
    /* Native Scrollbar */
    background: transparent !important;
    /* Must be transparent to show highlights */
    color: var(--color-text);
    caret-color: var(--color-accent-primary);

    /* Fix Vertical Drift caused by inline-block descenders */
    display: block;
}

/* Light Mode Logic - Handled by container background, Input remains transparent */
body.theme-light .textarea-container {
    background: var(--color-white);
    /* Explicit White */
}

/* Highlight Marks - Valid Geometry */
.editor-line.line-match {
    background-color: var(--regex-color-line-highlight);
    box-shadow: inset 3px 0 0 0 var(--color-accent-primary);
    display: block;
    /* Ensure full width block */
    min-height: 24px;
    /* Match line-height */
}

.backdrop {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    pointer-events: none;
    /* Let clicks pass through */
    color: transparent !important;
    /* Hide original text in backdrop to avoid anti-aliasing artifacts */
    background: transparent;
    overflow: hidden;
    /* Scroll sync handled by JS */
    padding-bottom: 20px;
    /* Extra padding to match textarea scroll behavior */
}

/* Highlight tags */
mark {
    background: var(--regex-color-match);
    border-radius: 2px;
    color: transparent;
    /* Text matches color of container (transparent) */
    /* Add border to make it distinct */
    box-shadow: 0 0 0 1px var(--regex-color-match-border);
}

/* Group highlight (if implemented) */
mark.group {
    background: var(--regex-color-group);
}

/* -------------------------------------------
   Substitution Panel
------------------------------------------- */
.replace-input-row {
    margin-bottom: var(--spacing-sm);
}

.replace-result-container {
    position: relative;
}

.result-viewer {
    background: rgba(0, 0, 0, 0.2);
    height: 120px;
    min-height: 120px;
    border: 1px solid var(--input-border);
    color: var(--color-text);
}

body.theme-light .result-viewer {
    background: rgba(0, 0, 0, 0.05);
}

.btn-icon-copy {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 4px;
    padding: 4px 8px;
    cursor: pointer;
    transition: all 0.2s;
    z-index: 3;
}

.btn-icon-copy:hover {
    background: var(--color-accent-secondary);
    color: white;
}

.substitution-body.collapsed {
    display: none;
}

/* -------------------------------------------
   Sidebar
------------------------------------------- */
.badge-count {
    background: var(--color-accent-primary);
    color: white;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.8rem;
    font-weight: bold;
}

.scroll-list {
    max-height: 200px;
    overflow-y: auto;
    scrollbar-width: thin;
}

.match-item {
    font-family: var(--editor-font);
    font-size: 0.9rem;
    padding: 4px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
}

.match-content {
    white-space: pre;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 80%;
    color: var(--color-accent-secondary);
}

.match-index {
    color: var(--color-text-muted);
}

.cheat-row {
    display: flex;
    justify-content: space-between;
    padding: 4px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.cheat-row code {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: var(--editor-font);
    color: var(--color-accent-primary);
}

/* Toggle Switch (Small) */
.cyber-toggle-sm {
    position: relative;
    display: inline-block;
    width: 36px;
    height: 20px;
}

.cyber-toggle-sm input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--card-border);
    transition: .4s;
    border-radius: 20px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 2px;
    bottom: 2px;
    background-color: var(--color-white);
    transition: .4s;
    border-radius: 50%;
}

input:checked+.toggle-slider {
    background-color: var(--color-accent-secondary);
}

input:checked+.toggle-slider:before {
    transform: translateX(16px);
}

body.theme-dark .toggle-slider {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Scroll Sync refinement */
/* The backdrop should not have scrollbars. The textarea does. */
/* We sync scrollTop/scrollLeft in JS. */
.backdrop {
    overflow: hidden;
}