/* style.css - toolsforcools Retro 2004-2006 Web Styling + Dark Mode */

/* ── CSS Custom Properties (Light Theme Default) ── */
:root {
    --bg-body: #e9ecef;
    --bg-container: #ffffff;
    --bg-header: #3b5998;
    --bg-header-border: #1d2a44;
    --bg-subheader: #eff2f7;
    --bg-sidebar: #f7f7f7;
    --bg-sidebar-panel: #ffffff;
    --bg-sidebar-panel-title: #eff2f7;
    --bg-content: #ffffff;
    --bg-card: #ffffff;
    --bg-faq: #f7f9fc;
    --bg-results: #eff2f7;
    --bg-code: #f7f7f7;
    --bg-hover: #e8edf4;
    --bg-table-alt: #f7f9fc;
    --bg-footer: #f7f7f7;
    --bg-adsense: #fffff0;
    --bg-input: #ffffff;
    --bg-preview: #fafafa;

    --text-primary: #000000;
    --text-secondary: #333333;
    --text-muted: #555555;
    --text-light: #666666;
    --text-header: #ffffff;
    --text-link: #3b5998;
    --text-link-hover: #5a75a7;
    --text-footer: #555555;
    --text-footer-hover: #3b5998;

    --border-primary: #3b5998;
    --border-secondary: #a5cae4;
    --border-light: #d3d3d3;
    --border-input: #7f9db9;
    --border-dark: #1d2a44;

    --btn-primary-bg: #3b5998;
    --btn-primary-border: #1d2a44;
    --btn-primary-text: #ffffff;
    --btn-primary-hover: #4c68a4;
    --btn-secondary-bg: #f0f0f0;
    --btn-secondary-border: #7f9db9;
    --btn-secondary-text: #000000;
    --btn-secondary-hover: #e4e4e4;

    --tab-bg: #f0f0f0;
    --tab-border: #a5cae4;
    --tab-text: #333333;
    --tab-active-bg: #3b5998;
    --tab-active-text: #ffffff;

    --highlight-bg: #ffff7f;
    --highlight-border: #ffaa00;
    --success-bg: #d4edda;
    --success-text: #155724;
    --success-border: #c3e6cb;
    --error-bg: #f8d7da;
    --error-text: #721c24;
    --error-border: #f5c6cb;
    --warning-bg: #fff3cd;
    --warning-text: #856404;
    --warning-border: #ffeeba;

    --diff-del-bg: #ffcccc;
    --diff-del-text: #990000;
    --diff-ins-bg: #ccffcc;
    --diff-ins-text: #006600;

    --hr-color: #d4dde8;
    --scrollbar-thumb: #7f9db9;
    --scrollbar-track: transparent;

    --shadow-color: rgba(0,0,0,0.1);
    --overlay-bg: rgba(0,0,0,0.5);
    --td-hover: #3b5998;

    --toggle-bg: #ffffff;
    --toggle-border: #a5cae4;
    --toggle-icon: #3b5998;
    --toggle-hover-bg: #3b5998;
    --toggle-hover-icon: #ffffff;

    --transition-speed: 0.2s;
}

/* ── Dark Theme ── */
[data-theme="dark"] {
    --bg-body: #1a1a2e;
    --bg-container: #16213e;
    --bg-header: #0f3460;
    --bg-header-border: #0a0a23;
    --bg-subheader: #1a1a3e;
    --bg-sidebar: #1a1a2e;
    --bg-sidebar-panel: #16213e;
    --bg-sidebar-panel-title: #0f3460;
    --bg-content: #16213e;
    --bg-card: #1a1a3e;
    --bg-faq: #1a1a3e;
    --bg-results: #1a1a3e;
    --bg-code: #1a1a2e;
    --bg-hover: #0f3460;
    --bg-table-alt: #1a1a3e;
    --bg-footer: #1a1a2e;
    --bg-adsense: #1a1a2e;
    --bg-input: #0f3460;
    --bg-preview: #1a1a2e;

    --text-primary: #e0e0e0;
    --text-secondary: #cccccc;
    --text-muted: #aaaaaa;
    --text-light: #888888;
    --text-header: #ffffff;
    --text-link: #5a8de0;
    --text-link-hover: #7ba3e8;
    --text-footer: #aaaaaa;
    --text-footer-hover: #5a8de0;

    --border-primary: #5a8de0;
    --border-secondary: #2a4a7f;
    --border-light: #2a2a4a;
    --border-input: #2a4a7f;
    --border-dark: #0a0a23;

    --btn-primary-bg: #0f3460;
    --btn-primary-border: #5a8de0;
    --btn-primary-text: #ffffff;
    --btn-primary-hover: #1a4a7f;
    --btn-secondary-bg: #1a1a3e;
    --btn-secondary-border: #2a4a7f;
    --btn-secondary-text: #e0e0e0;
    --btn-secondary-hover: #2a2a5e;

    --tab-bg: #1a1a3e;
    --tab-border: #2a4a7f;
    --tab-text: #cccccc;
    --tab-active-bg: #0f3460;
    --tab-active-text: #ffffff;

    --highlight-bg: #4a3f00;
    --highlight-border: #aa8800;
    --success-bg: #0a2a1a;
    --success-text: #6fcf97;
    --success-border: #1a4a2a;
    --error-bg: #2a0a0a;
    --error-text: #cf6f6f;
    --error-border: #4a1a1a;
    --warning-bg: #2a2a0a;
    --warning-text: #cfcf6f;
    --warning-border: #4a4a1a;

    --diff-del-bg: #3a1a1a;
    --diff-del-text: #ff8888;
    --diff-ins-bg: #1a3a1a;
    --diff-ins-text: #88ff88;

    --hr-color: #2a2a4a;
    --scrollbar-thumb: #2a4a7f;
    --scrollbar-track: #1a1a2e;

    --shadow-color: rgba(0,0,0,0.4);
    --overlay-bg: rgba(0,0,0,0.7);
    --td-hover: #ffffff;

    --toggle-bg: #0f3460;
    --toggle-border: #5a8de0;
    --toggle-icon: #ffdd00;
    --toggle-hover-bg: #5a8de0;
    --toggle-hover-icon: #ffffff;
}

/* ── Smooth Transitions ── */
*,
*::before,
*::after {
    transition: background-color var(--transition-speed) ease,
                color var(--transition-speed) ease,
                border-color var(--transition-speed) ease,
                box-shadow var(--transition-speed) ease;
}

/* ── Reset and Global Styles ── */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    border-radius: 0 !important;
}

body {
    font-family: Tahoma, Verdana, Arial, Helvetica, sans-serif;
    font-size: 11px;
    color: var(--text-primary);
    background-color: var(--bg-body);
    line-height: 1.4;
    padding: 10px;
}

a {
    color: var(--text-link);
    text-decoration: underline;
    cursor: pointer;
}

a:hover {
    color: var(--text-link-hover);
    text-decoration: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: Arial, Tahoma, Verdana, sans-serif;
    font-weight: bold;
}

h1 {
    font-size: 22px;
    color: #ffffff;
}

h2 {
    font-size: 14px;
    color: var(--text-link);
    margin-bottom: 8px;
    border-bottom: 1px solid var(--border-primary);
    padding-bottom: 3px;
    margin-top: 15px;
}

h2:first-of-type {
    margin-top: 0;
}

/* ── Dark Mode Toggle ── */
.dark-toggle {
    background: var(--toggle-bg);
    border: 1px solid var(--toggle-border);
    cursor: pointer;
    font-size: 14px;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    line-height: 1;
    color: var(--toggle-icon);
    flex-shrink: 0;
}

.dark-toggle:hover {
    background: var(--toggle-hover-bg);
    color: var(--toggle-hover-icon);
}

.header-banner .dark-toggle {
    margin-left: 8px;
}

/* ── Page Container Layout ── */
.container {
    max-width: 1000px;
    margin: 0 auto;
    background-color: var(--bg-container);
    border: 1px solid var(--border-dark);
    box-shadow: 2px 2px 0px var(--shadow-color);
}

/* ── Header Banner ── */
.header-banner {
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--bg-header-border);
    padding: 12px 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.logo-area {
    flex-shrink: 0;
}

.header-banner .header-right-group {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.logo-area a {
    color: var(--text-header);
    font-size: 24px;
    font-weight: bold;
    text-decoration: none;
    letter-spacing: -1px;
}

.logo-area a span {
    color: #a5cae4;
}

.header-status {
    color: var(--text-header);
    font-size: 11px;
    text-align: right;
}

.header-status span {
    color: #d9e2e1;
}

/* ── Sub-header Bar ── */
.sub-header {
    background-color: var(--bg-subheader);
    border-bottom: 1px solid var(--border-secondary);
    padding: 8px 15px;
    font-size: 11px;
    color: var(--text-link);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.sub-header-left {
    font-weight: bold;
}

.sub-header-right {
    color: var(--text-light);
}

/* ── Main Layout ── */
.main-layout {
    display: flex;
    min-height: 500px;
}

/* ── Sidebar ── */
.sidebar {
    width: 230px;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-light);
    padding: 15px 8px;
    flex-shrink: 0;
}

.sidebar-panel {
    border: 1px solid var(--border-secondary);
    background-color: var(--bg-sidebar-panel);
    margin-bottom: 15px;
}

.sidebar-panel-title {
    background-color: var(--bg-sidebar-panel-title);
    border-bottom: 1px solid var(--border-secondary);
    padding: 5px 8px;
    font-weight: bold;
    color: var(--text-link);
    font-size: 11px;
}

.sidebar-list {
    list-style-type: none;
    padding: 0;
}

.sidebar-list li {
    border-bottom: 1px dashed var(--border-light);
}

.sidebar-list li:last-child {
    border-bottom: none;
}

.sidebar-list li a {
    display: block;
    padding: 5px 8px;
    color: var(--text-primary);
    text-decoration: none;
    font-weight: normal;
    font-size: 10.5px;
}

.sidebar-list li a:hover,
.sidebar-list li a.active {
    background-color: var(--bg-header);
    color: var(--text-header);
    font-weight: bold;
}

.sidebar-list li a span.arrow {
    float: right;
    font-weight: bold;
}

/* ── Main Content Area ── */
.content-area {
    flex-grow: 1;
    padding: 20px 15px;
    background-color: var(--bg-content);
    overflow-x: hidden;
}

/* ── Crypto Live Price Ticker ── */
.coin-ticker-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 8px 12px;
    background-color: var(--border-dark);
    border-bottom: 1px solid var(--border-secondary);
    margin-bottom: 0;
}

.coin-ticker-item {
    color: var(--text-header);
    font-size: 10px;
    font-family: Courier New, monospace;
    padding: 3px 8px;
    background-color: var(--bg-header);
    border: 1px solid var(--border-secondary);
}

.coin-ticker-item .price .up {
    color: #66ff66;
    font-weight: bold;
}

.coin-ticker-item .price .down {
    color: #ff6666;
    font-weight: bold;
}

/* ── Retro Panel ── */
.panel {
    border: 1px solid var(--border-primary);
    margin-bottom: 20px;
    background-color: var(--bg-card);
}

.panel-header {
    background-color: var(--bg-header);
    color: var(--text-header);
    font-weight: bold;
    font-size: 12px;
    padding: 6px 10px;
    border-bottom: 1px solid var(--bg-header-border);
}

.panel-body {
    padding: 12px;
}

.panel-footer {
    background-color: var(--bg-sidebar);
    border-top: 1px solid var(--border-light);
    padding: 8px 10px;
    text-align: right;
}

/* ── Form Styling ── */
.form-group {
    margin-bottom: 12px;
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: bold;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.form-group label span.required {
    color: #cc0000;
}

.form-control {
    font-family: Tahoma, Arial, sans-serif;
    font-size: 11px;
    color: var(--text-primary);
    background-color: var(--bg-input);
    border: 1px solid var(--border-input);
    padding: 4px 6px;
    width: 100%;
}

.form-control:focus {
    outline: 1px solid var(--border-primary);
}

select.form-control {
    padding: 3px 5px;
}

textarea.form-control {
    height: 120px;
    font-family: Courier New, monospace;
    font-size: 11px;
    resize: vertical;
}

.form-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.form-grid-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 10px;
}

hr {
    border: none;
    border-top: 1px solid var(--hr-color);
    margin: 10px 0;
}

/* ── Retro Buttons ── */
.btn-retro {
    font-family: Tahoma, Arial, sans-serif;
    font-size: 11px;
    padding: 4px 12px;
    cursor: pointer;
    font-weight: normal;
    display: inline-block;
    text-align: center;
    vertical-align: middle;
}

.btn-retro-primary {
    background-color: var(--btn-primary-bg);
    border: 1px solid var(--btn-primary-border);
    color: var(--btn-primary-text);
    font-weight: bold;
}

.btn-retro-primary:hover {
    background-color: var(--btn-primary-hover);
}

.btn-retro-secondary {
    background-color: var(--btn-secondary-bg);
    border: 1px solid var(--btn-secondary-border);
    color: var(--btn-secondary-text);
}

.btn-retro-secondary:hover {
    background-color: var(--btn-secondary-hover);
    border-color: var(--border-primary);
}

/* ── Table & Responsive Wrappers ── */
.table-container {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border: 1px solid var(--border-light);
    margin-bottom: 15px;
}

.table-retro {
    width: 100%;
    border-collapse: collapse;
    font-size: 11px;
    min-width: 500px;
}

.table-retro th {
    background-color: var(--bg-subheader);
    color: var(--text-link);
    border: 1px solid var(--border-secondary);
    padding: 6px 8px;
    text-align: left;
    font-weight: bold;
}

.table-retro td {
    border: 1px solid var(--border-light);
    padding: 6px 8px;
    background-color: var(--bg-card);
}

.table-retro tr:nth-child(even) td {
    background-color: var(--bg-table-alt);
}

.table-retro tr.total-row td {
    font-weight: bold;
    background-color: var(--bg-subheader) !important;
    border-top: 2px solid var(--border-primary);
}

/* ── Calculator Layouts ── */
.calc-container {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 15px;
}

.calc-sidebar {
    min-width: 0;
}

.calc-main {
    min-width: 0;
}

/* ── Results Display Box ── */
.results-box {
    border: 1px solid var(--border-secondary);
    background-color: var(--bg-results);
    padding: 10px 12px;
    margin-bottom: 15px;
}

.results-box-title {
    font-weight: bold;
    color: var(--text-link);
    margin-bottom: 8px;
    font-size: 12px;
    border-bottom: 1px dotted var(--border-secondary);
    padding-bottom: 4px;
}

.results-grid {
    display: grid;
    grid-template-columns: auto auto;
    gap: 6px 12px;
    justify-content: space-between;
    align-items: center;
}

.result-label {
    font-weight: bold;
}

.result-val {
    text-align: right;
    font-family: Courier New, monospace;
    font-size: 12px;
    font-weight: bold;
}

.result-val.profit {
    color: #006600;
}

.result-val.loss {
    color: #cc0000;
}

[data-theme="dark"] .result-val.profit {
    color: #6fcf97;
}

[data-theme="dark"] .result-val.loss {
    color: #cf6f6f;
}

/* ── Charts Wrapper ── */
.chart-container {
    border: 1px solid var(--border-light);
    background-color: var(--bg-card);
    padding: 10px;
    margin-bottom: 15px;
    height: 250px;
    position: relative;
    max-width: 100%;
}

/* ── Code & Output Blocks ── */
.code-output {
    font-family: Courier New, monospace;
    background-color: var(--bg-code);
    border: 1px solid var(--border-input);
    padding: 8px;
    white-space: pre-wrap;
    word-break: break-all;
    max-height: 180px;
    overflow-y: auto;
    font-size: 11px;
    margin-top: 5px;
}

/* ── Home Portal Styles ── */
.portal-desc {
    margin-bottom: 20px;
    padding: 12px;
    background-color: var(--bg-results);
    border: 1px solid var(--border-secondary);
    font-size: 12px;
    line-height: 1.5;
}

.tools-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-top: 15px;
}

.tool-card {
    border: 1px solid var(--border-secondary);
    background-color: var(--bg-card);
    padding: 10px 12px;
    display: flex;
    flex-direction: column;
}

.tool-card-title {
    font-weight: bold;
    font-size: 13px;
    color: var(--text-link);
    margin-bottom: 5px;
}

.tool-card-desc {
    font-size: 11px;
    color: var(--text-muted);
    flex-grow: 1;
    margin-bottom: 10px;
}

/* ── AdSense Placeholders ── */
.adsense-placeholder {
    background-color: var(--bg-adsense);
    border: 1px dashed var(--warning-border);
    color: var(--warning-text);
    font-family: Arial, sans-serif;
    font-size: 10px;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin: 15px 0;
    padding: 5px;
    overflow: hidden;
}

.adsense-placeholder span.ad-tag {
    font-weight: bold;
    color: var(--warning-text);
    margin-bottom: 3px;
    font-size: 9px;
}

.adsense-leaderboard {
    width: 100%;
    max-width: 728px;
    height: 90px;
    margin: 10px auto;
}

.adsense-sidebar-box {
    width: 100%;
    height: 250px;
    margin: 15px 0 0 0;
}

.adsense-content-box {
    width: 100%;
    height: 100px;
    margin: 15px 0;
}

/* ── SEO FAQ & Guide ── */
.seo-info-container {
    margin-top: 30px;
    border-top: 3px double var(--border-primary);
    padding-top: 15px;
}

.seo-guide-box {
    margin-bottom: 20px;
}

.seo-guide-box p {
    margin-bottom: 8px;
    font-size: 11.5px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.seo-faq-list {
    margin-top: 12px;
}

.seo-faq-item {
    margin-bottom: 12px;
    background-color: var(--bg-faq);
    border: 1px solid var(--border-light);
    padding: 8px 12px;
}

.seo-faq-question {
    font-weight: bold;
    color: var(--text-link);
    font-size: 11px;
    margin-bottom: 4px;
}

.seo-faq-answer {
    color: var(--text-secondary);
    font-size: 11px;
    line-height: 1.4;
}

/* ── Password Checker ── */
.strength-bar-container {
    height: 12px;
    background-color: var(--border-light);
    border: 1px solid var(--border-input);
    margin: 5px 0 8px 0;
    position: relative;
}

.strength-bar-fill {
    height: 100%;
    width: 0%;
    transition: width 0.3s ease, background-color 0.3s ease;
}

.strength-bar-text {
    font-weight: bold;
    font-size: 10px;
    margin-bottom: 5px;
}

/* ── QR Scanner ── */
#qr-reader {
    width: 100%;
    max-width: 320px;
    border: 1px solid var(--border-input);
    background-color: var(--bg-preview);
    margin: 10px auto;
}

/* ── TimeZone Planner ── */
.timezone-planner-row {
    border: 1px solid var(--border-light);
    padding: 8px 12px;
    margin-bottom: 10px;
    background-color: var(--bg-card);
}

.timezone-planner-row:nth-child(even) {
    background-color: var(--bg-table-alt);
}

.timezone-label-row {
    display: flex;
    justify-content: space-between;
    font-weight: bold;
    color: var(--text-link);
    margin-bottom: 6px;
}

.timezone-slider-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.timezone-slider-container input[type="range"] {
    flex-grow: 1;
    cursor: pointer;
}

.hour-badge {
    padding: 2px 5px;
    font-family: monospace;
    font-weight: bold;
    font-size: 11px;
}

.hour-badge.working {
    background-color: var(--success-bg);
    color: var(--success-text);
    border: 1px solid var(--success-border);
}

.hour-badge.sleeping {
    background-color: var(--error-bg);
    color: var(--error-text);
    border: 1px solid var(--error-border);
}

.hour-badge.off {
    background-color: var(--warning-bg);
    color: var(--warning-text);
    border: 1px solid var(--warning-border);
}

/* ── JSON Format & Validate ── */
.json-feedback {
    padding: 6px 10px;
    font-family: monospace;
    font-size: 11px;
    margin-top: 10px;
}

.json-feedback.error {
    background-color: var(--error-bg);
    color: var(--error-text);
    border: 1px solid var(--error-border);
}

.json-feedback.success {
    background-color: var(--success-bg);
    color: var(--success-text);
    border: 1px solid var(--success-border);
}

/* ── Regex Checker ── */
.regex-matched-text {
    font-family: Courier New, monospace;
    background-color: var(--bg-card);
    border: 1px solid var(--border-input);
    padding: 8px;
    white-space: pre-wrap;
    word-break: break-all;
    min-height: 80px;
    max-height: 200px;
    overflow-y: auto;
    font-size: 11px;
}

.regex-highlight {
    background-color: var(--highlight-bg);
    border-bottom: 1px dotted var(--highlight-border);
    font-weight: bold;
}

/* ── Markdown Editor ── */
.markdown-editor-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.markdown-preview-box {
    border: 1px solid var(--border-input);
    padding: 8px;
    height: 220px;
    overflow-y: auto;
    background-color: var(--bg-preview);
    font-size: 11px;
}

.markdown-preview-box h1 { font-size: 15px; color: var(--text-link); border-bottom: 1px dotted var(--border-light); margin-bottom: 6px; }
.markdown-preview-box h2 { font-size: 13px; color: var(--text-link); margin-top: 10px; margin-bottom: 4px; border-bottom: none; padding-bottom: 0; }
.markdown-preview-box h3 { font-size: 11.5px; color: var(--text-primary); margin-top: 8px; margin-bottom: 2px; }
.markdown-preview-box p { margin-bottom: 8px; }
.markdown-preview-box ul, .markdown-preview-box ol { margin-left: 15px; margin-bottom: 8px; }
.markdown-preview-box blockquote { border-left: 3px solid var(--border-primary); padding-left: 6px; color: var(--text-light); margin-bottom: 8px; font-style: italic; }
.markdown-preview-box code { font-family: monospace; background-color: var(--bg-code); padding: 1px 3px; }
.markdown-preview-box pre { background-color: var(--bg-code); padding: 6px; border: 1px solid var(--border-light); overflow-x: auto; margin-bottom: 8px; }
.markdown-preview-box pre code { background-color: transparent; padding: 0; }

/* ── Diff Comparisons ── */
.diff-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.diff-output-panel {
    font-family: Courier New, monospace;
    font-size: 11px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-input);
    padding: 8px;
    white-space: pre-wrap;
    word-break: break-all;
    min-height: 150px;
    max-height: 400px;
    overflow-y: auto;
}

.diff-deleted {
    background-color: var(--diff-del-bg);
    text-decoration: line-through;
    color: var(--diff-del-text);
}

.diff-inserted {
    background-color: var(--diff-ins-bg);
    color: var(--diff-ins-text);
}

/* ── Footer Sitemap ── */
.footer-robust {
    background-color: var(--bg-footer);
    border-top: 1px solid var(--border-light);
    padding: 20px 15px;
    color: var(--text-secondary);
}

.footer-sitemap {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 15px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 15px;
}

.footer-col-title {
    font-weight: bold;
    color: var(--text-link);
    margin-bottom: 8px;
    font-size: 11px;
}

.footer-col ul {
    list-style-type: none;
    padding: 0;
}

.footer-col ul li {
    margin-bottom: 4px;
}

.footer-col ul li a {
    color: var(--text-footer);
    text-decoration: none;
}

.footer-col ul li a:hover {
    color: var(--text-footer-hover);
    text-decoration: underline;
}

.footer-disclaimer {
    text-align: center;
    font-size: 10px;
    color: var(--text-light);
    line-height: 1.5;
}

/* ── Tab System ── */
.tab-container {
    margin-bottom: 15px;
}

.tab-buttons {
    display: flex;
    border-bottom: 1px solid var(--tab-border);
    margin-bottom: 0;
}

.tab-btn {
    font-family: Tahoma, Arial, sans-serif;
    font-size: 11px;
    padding: 6px 14px;
    cursor: pointer;
    background-color: var(--tab-bg);
    border: 1px solid var(--tab-border);
    border-bottom: none;
    color: var(--tab-text);
    margin-right: 3px;
    font-weight: bold;
}

.tab-btn:hover {
    background-color: var(--btn-secondary-hover);
}

.tab-btn.active {
    background-color: var(--tab-active-bg);
    border-color: var(--btn-primary-border);
    color: var(--tab-active-text);
    position: relative;
    z-index: 2;
}

.tab-panel {
    display: none;
    padding: 15px 0 0 0;
}

.tab-panel.active {
    display: block;
}

/* ── Preview Areas ── */
.preview-area {
    background-color: var(--bg-card);
    border: 1px solid var(--border-input);
    min-height: 200px;
    padding: 8px;
    overflow: auto;
}

.preview-area-grid {
    min-height: 200px;
}

.preview-area-flex {
    min-height: 150px;
}

.preview-item {
    font-family: Arial, Tahoma, sans-serif;
    font-size: 11px;
    font-weight: bold;
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    text-shadow: 1px 1px 0 rgba(0,0,0,0.3);
    min-height: 40px;
    border: 1px solid rgba(0,0,0,0.15);
}

.preview-area-grid .preview-item {
    padding: 10px;
}

/* ── Range Input ── */
input[type="range"].form-control {
    padding: 0;
    height: auto;
    background: transparent;
    border: none;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
    width: 100%;
}

input[type="range"].form-control::-webkit-slider-runnable-track {
    height: 4px;
    background: var(--border-light);
    border: 1px solid var(--border-input);
}

input[type="range"].form-control::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    background: var(--bg-header);
    border: 1px solid var(--bg-header-border);
    cursor: pointer;
    margin-top: -6px;
}

input[type="range"].form-control::-moz-range-track {
    height: 4px;
    background: var(--border-light);
    border: 1px solid var(--border-input);
}

input[type="range"].form-control::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--bg-header);
    border: 1px solid var(--bg-header-border);
    cursor: pointer;
}

/* ── Scrollbar Styling ── */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
}

::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border: 1px solid var(--border-input);
}

/* ── Hamburger Menu ── */
.hamburger-btn {
    display: none;
    position: fixed;
    top: 10px;
    left: 10px;
    z-index: 1001;
    background: var(--bg-header);
    color: #fff;
    border: none;
    padding: 8px 12px;
    font-size: 16px;
    cursor: pointer;
    font-family: Tahoma, Verdana, sans-serif;
    border: 1px solid var(--bg-header-border);
}

.hamburger-btn:hover {
    background: var(--bg-header-border);
}

.hamburger-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--overlay-bg);
    z-index: 999;
}

.sidebar-header-mobile {
    display: none;
}

/* ── Responsive Styles ── */
@media (max-width: 900px) {
    .container {
        margin: 0;
        width: 100%;
        max-width: 100%;
        border: none;
    }
}

@media (max-width: 768px) {
    body {
        padding: 0;
    }

    .header-banner {
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        padding: 10px 12px;
    }

    .header-banner .header-right-group {
        justify-content: flex-start;
        width: 100%;
    }

    .header-status {
        text-align: left;
        font-size: 10px;
    }

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

    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-light);
        padding: 12px;
    }

    .hamburger-btn {
        display: block;
    }

    .sidebar {
        position: fixed;
        top: 0;
        left: -290px;
        width: 280px;
        height: 100%;
        z-index: 1000;
        overflow-y: auto;
        transition: left 0.3s ease;
        border-right: 2px solid var(--border-primary);
        padding-top: 50px;
        display: block;
    }

    .sidebar.open {
        left: 0;
    }

    .sidebar-header-mobile {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 8px 12px;
        border-bottom: 1px solid var(--border-secondary);
        margin-bottom: 10px;
    }

    .sidebar-title-mobile {
        font-weight: bold;
        color: var(--text-link);
        font-size: 12px;
    }

    .sidebar-close-btn {
        background: none;
        border: none;
        font-size: 16px;
        cursor: pointer;
        color: var(--text-link);
        font-weight: bold;
    }

    .sidebar-close-btn:hover {
        color: #cc0000;
    }

    .hamburger-overlay.active {
        display: block;
    }

    .calc-container {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .tools-grid {
        grid-template-columns: 1fr;
    }

    .adsense-leaderboard {
        height: 60px;
    }

    .adsense-sidebar-box {
        height: 150px;
    }

    .markdown-editor-container {
        grid-template-columns: 1fr;
    }

    .footer-sitemap {
        grid-template-columns: 1fr 1fr;
        gap: 15px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 0;
    }

    .form-grid-2, .form-grid-3 {
        grid-template-columns: 1fr;
        gap: 5px;
    }

    .footer-sitemap {
        grid-template-columns: 1fr;
    }

    .header-banner {
        padding: 8px 10px;
    }

    .logo-area a {
        font-size: 18px;
    }

    .dark-toggle {
        width: 24px;
        height: 24px;
        font-size: 12px;
    }

    .panel-body {
        padding: 8px;
    }

    .content-area {
        padding: 12px 8px;
    }

    .sub-header {
        padding: 6px 10px;
        font-size: 10px;
    }

    .adsense-sidebar-box {
        height: 100px;
    }

    .adsense-content-box {
        height: 80px;
    }
}

@media (max-width: 360px) {
    .footer-sitemap {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .sidebar {
        width: 260px;
        left: -270px;
    }
}