/* =====================================================
   XpressDevTools — site.css
   Reset, variables, typography, components, themes.
   ===================================================== */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }
body { min-height: 100vh; line-height: 1.55; }
button { font: inherit; cursor: pointer; background: none; border: none; color: inherit; }
input, textarea, select { font: inherit; color: inherit; }
a { color: inherit; }
img, svg { display: block; max-width: 100%; }
pre, code, kbd { font-family: var(--font-mono); }

/* ---------- Tokens ---------- */
:root {
    --font-sans: "IBM Plex Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Monaco, Consolas, "Liberation Mono", monospace;

    --bg-primary: #FAFAFA;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #F0F0F0;
    --text-primary: #1A1A1A;
    --text-secondary: #6B6B6B;
    --accent: #2563EB;
    --accent-hover: #1D4ED8;
    --border: #E5E5E5;
    --success: #16A34A;
    --error: #DC2626;
    --warning: #CA8A04;
    --code-bg: #F5F5F5;
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 32px -8px rgba(0,0,0,0.15);

    --radius: 6px;
    --radius-lg: 10px;
    --max-w: none;
    --header-h: 56px;
    --gap: 16px;
    --gap-lg: 24px;
    --pad: 24px;

    --transition: 180ms ease;
}

[data-theme="dark"] {
    --bg-primary: #0A0A0A;
    --bg-secondary: #141414;
    --bg-tertiary: #1E1E1E;
    --text-primary: #FAFAFA;
    --text-secondary: #A0A0A0;
    --accent: #3B82F6;
    --accent-hover: #60A5FA;
    --border: #2A2A2A;
    --success: #22C55E;
    --error: #EF4444;
    --warning: #EAB308;
    --code-bg: #1A1A1A;
    --shadow: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-lg: 0 12px 32px -8px rgba(0,0,0,0.6);
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: background var(--transition), color var(--transition);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ---------- Typography ---------- */
h1, h2, h3, h4 { font-weight: 600; letter-spacing: -0.01em; line-height: 1.25; margin: 0; }
h1 { font-size: 2rem; letter-spacing: -0.02em; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.1rem; }
p { margin: 0; }
code, kbd { font-size: 0.875em; }
kbd { padding: 2px 6px; background: var(--bg-tertiary); border: 1px solid var(--border); border-radius: 4px; box-shadow: 0 1px 0 var(--border); font-size: 0.8em; }
.mono { font-family: var(--font-mono); }
.muted { color: var(--text-secondary); }

/* ---------- A11y ---------- */
.skip-link {
    position: absolute; left: -9999px; top: 0; padding: 8px 12px;
    background: var(--accent); color: #fff; text-decoration: none; border-radius: 0 0 var(--radius) 0; z-index: 100;
}
.skip-link:focus { left: 0; }
*:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

/* ---------- Header ---------- */
.site-header {
    position: sticky; top: 0; z-index: 50;
    background: color-mix(in srgb, var(--bg-primary) 92%, transparent);
    backdrop-filter: saturate(180%) blur(10px);
    -webkit-backdrop-filter: saturate(180%) blur(10px);
    border-bottom: 1px solid var(--border);
}
.site-header-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    height: var(--header-h);
    padding: 0 24px;
    display: flex;
    align-items: center;
    gap: 24px;
}
.brand {
    display: inline-flex; align-items: center; gap: 8px;
    font-weight: 700; font-size: 1rem; letter-spacing: -0.01em;
    text-decoration: none; color: var(--text-primary);
}
.brand-mark {
    display: inline-grid; place-items: center;
    width: 26px; height: 26px;
    background: var(--accent); color: #fff;
    border-radius: 6px;
    font-size: 0.9rem; font-weight: 700;
}
.brand-text { font-family: var(--font-mono); font-weight: 600; }

.primary-nav { display: flex; align-items: center; gap: 4px; margin-left: 12px; }
.nav-link { padding: 6px 10px; border-radius: 6px; text-decoration: none; color: var(--text-secondary); font-size: 0.9rem; font-weight: 500; transition: color var(--transition), background var(--transition); }
.nav-link:hover { color: var(--text-primary); background: var(--bg-tertiary); }
.header-actions { margin-left: auto; display: flex; gap: 4px; align-items: center; }
.icon-btn {
    width: 36px; height: 36px;
    display: grid; place-items: center;
    border-radius: 8px; color: var(--text-secondary);
    transition: background var(--transition), color var(--transition);
}
.icon-btn:hover { background: var(--bg-tertiary); color: var(--text-primary); }
.icon-btn-mobile { display: none; }

/* Theme icon swap */
.icon-sun, .icon-moon { display: none; }
[data-theme="light"] .icon-moon { display: block; }
[data-theme="dark"] .icon-sun { display: block; }

/* ---------- Tool nav dropdown ---------- */
.tool-nav { position: relative; }
.tool-nav-trigger {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 6px 10px; border-radius: 6px;
    color: var(--text-secondary); font-size: 0.9rem; font-weight: 500;
    transition: color var(--transition), background var(--transition);
}
.tool-nav-trigger:hover, .tool-nav[data-open] .tool-nav-trigger { color: var(--text-primary); background: var(--bg-tertiary); }
.tool-nav-menu {
    position: absolute; top: calc(100% + 8px); left: 0;
    width: 560px; max-width: 90vw;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 8px;
    opacity: 0; visibility: hidden; transform: translateY(-4px);
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
}
.tool-nav[data-open] .tool-nav-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.tool-nav-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; }
.tool-nav-item {
    display: flex; align-items: flex-start; gap: 12px;
    padding: 10px 12px; border-radius: 8px;
    text-decoration: none; color: var(--text-primary);
    transition: background var(--transition);
}
.tool-nav-item:hover { background: var(--bg-tertiary); }
.tool-nav-icon {
    flex-shrink: 0; width: 32px; height: 32px;
    display: grid; place-items: center;
    background: var(--bg-tertiary); border-radius: 8px;
    font-family: var(--font-mono); font-size: 0.85rem; font-weight: 600;
    color: var(--accent);
}
.tool-nav-text { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.tool-nav-name { font-weight: 600; font-size: 0.9rem; }
.tool-nav-desc { color: var(--text-secondary); font-size: 0.8rem; line-height: 1.4; }

/* ---------- Mobile nav ---------- */
.mobile-nav {
    display: none;
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
    padding: 8px;
}
.mobile-nav.is-open { display: flex; flex-direction: column; gap: 2px; }
.mobile-nav-link {
    padding: 12px 14px; border-radius: 8px;
    text-decoration: none; color: var(--text-primary); font-size: 0.95rem;
}
.mobile-nav-link:hover { background: var(--bg-tertiary); }

/* ---------- Main / sections ---------- */
main { min-height: calc(100vh - var(--header-h)); }
.content-section { max-width: var(--max-w); margin: 0 auto; padding: 48px 24px; }
.content-narrow { max-width: 760px; margin: 0 auto; }
.content-narrow h1 { margin-bottom: 16px; }
.content-narrow h2 { margin-top: 32px; margin-bottom: 12px; }
.content-narrow p, .content-narrow ul { margin-bottom: 14px; }
.content-narrow ul { padding-left: 22px; }
.content-narrow .lede { color: var(--text-secondary); font-size: 1.1rem; }

/* ---------- Hero ---------- */
.hero {
    padding: 72px 24px 48px;
    background: radial-gradient(1200px 400px at 50% -100px, color-mix(in srgb, var(--accent) 14%, transparent), transparent);
    border-bottom: 1px solid var(--border);
}
.hero-inner { max-width: 880px; margin: 0 auto; text-align: center; }
.hero-eyebrow {
    display: inline-block; padding: 4px 12px;
    font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase;
    color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, transparent);
    border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
    border-radius: 999px; margin-bottom: 18px;
}
.hero-title {
    font-family: var(--font-mono);
    font-size: clamp(2rem, 5vw, 3.4rem);
    letter-spacing: -0.03em; font-weight: 600;
    margin-bottom: 16px;
}
.hero-subtitle { font-size: 1.1rem; color: var(--text-secondary); max-width: 640px; margin: 0 auto 28px; line-height: 1.6; }
.hero-stats { display: inline-flex; gap: 36px; margin-bottom: 28px; }
.hero-stat { display: flex; flex-direction: column; align-items: center; }
.hero-stat-num { font-family: var(--font-mono); font-size: 1.6rem; font-weight: 600; }
.hero-stat-label { color: var(--text-secondary); font-size: 0.85rem; }
.hero-search {
    display: inline-flex; align-items: center; gap: 10px;
    max-width: 520px; width: 100%; padding: 10px 14px;
    background: var(--bg-secondary); border: 1px solid var(--border); border-radius: 999px;
    color: var(--text-secondary);
    box-shadow: var(--shadow);
}
.hero-search input {
    flex: 1; min-width: 0; border: 0; outline: 0; background: transparent;
    font-size: 0.95rem; color: var(--text-primary);
}
.hero-kbd {
    border: 1px solid var(--border);
    background: var(--bg-tertiary);
    padding: 1px 6px; border-radius: 4px;
    font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-secondary);
}

/* ---------- Tool directory ---------- */
.tool-directory { max-width: var(--max-w); margin: 0 auto; padding: 56px 24px; }
.section-header { margin-bottom: 28px; }
.section-header h2 { margin-bottom: 6px; }
.section-header p { color: var(--text-secondary); }
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}
.tool-grid-empty { color: var(--text-secondary); text-align: center; padding: 32px; }
.tool-card {
    display: flex; flex-direction: column; gap: 10px;
    padding: 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border); border-radius: var(--radius-lg);
    text-decoration: none; color: var(--text-primary);
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.tool-card:hover {
    transform: translateY(-2px);
    border-color: color-mix(in srgb, var(--accent) 50%, var(--border));
    box-shadow: var(--shadow-lg);
}
.tool-card-head { display: flex; justify-content: space-between; align-items: center; }
.tool-card-icon {
    width: 40px; height: 40px;
    display: grid; place-items: center;
    background: var(--bg-tertiary); border-radius: 8px;
    font-family: var(--font-mono); font-weight: 600; font-size: 0.95rem;
    color: var(--accent);
}
.tool-card-category {
    font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.08em;
    text-transform: uppercase; color: var(--text-secondary);
}
.tool-card-name { font-family: var(--font-mono); font-size: 1.05rem; font-weight: 600; }
.tool-card-desc { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.5; flex: 1; }
.tool-card-cta {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: 0.85rem; font-weight: 500; color: var(--accent);
    margin-top: 4px;
}

/* ---------- Value props ---------- */
.value-props { max-width: var(--max-w); margin: 0 auto; padding: 0 24px 80px; }
.value-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.value-card {
    padding: 24px;
    background: var(--bg-secondary);
    border: 1px solid var(--border); border-radius: var(--radius-lg);
}
.value-card h3 { margin-bottom: 8px; font-family: var(--font-mono); }
.value-card p { color: var(--text-secondary); font-size: 0.9rem; }

/* ---------- Tool page layout ---------- */
.tool-page { max-width: var(--max-w); margin: 0 auto; padding: 32px 24px 64px; }
.tool-header { margin-bottom: 24px; }
.tool-header-inner { display: flex; align-items: center; gap: 16px; margin-bottom: 12px; }
.tool-header-icon {
    width: 48px; height: 48px; flex-shrink: 0;
    display: grid; place-items: center;
    background: var(--bg-tertiary); border-radius: 10px;
    font-family: var(--font-mono); font-weight: 600; font-size: 1.05rem;
    color: var(--accent);
}
.tool-title { font-family: var(--font-mono); font-size: 1.75rem; font-weight: 600; letter-spacing: -0.02em; }
.tool-subtitle { color: var(--text-secondary); font-size: 1rem; margin-top: 4px; }
.tool-header-meta { display: flex; flex-wrap: wrap; gap: 6px; }
.tool-badge {
    font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.04em;
    padding: 3px 8px; border-radius: 999px;
    background: var(--bg-tertiary); color: var(--text-secondary);
    border: 1px solid var(--border);
}

.tool-shell { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 24px; align-items: stretch; }
.tool-main { display: flex; flex-direction: column; gap: 16px; min-width: 0; }
.tool-sidebar { display: flex; flex-direction: column; gap: 16px; align-self: stretch; }

.tool-options {
    display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border); border-radius: var(--radius);
}
.tool-panels {
    display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
    min-height: 400px;
}
.tool-panel {
    display: flex; flex-direction: column;
    background: var(--bg-secondary);
    border: 1px solid var(--border); border-radius: var(--radius);
    min-height: 400px;
    overflow: hidden;
}
.tool-panel-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-primary);
}
.tool-panel-title {
    font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.08em;
    text-transform: uppercase; color: var(--text-secondary); font-weight: 600;
}
.tool-panel-actions { display: flex; gap: 4px; }
.tool-panel-body { flex: 1; display: flex; flex-direction: column; min-height: 0; }

.tool-actions {
    display: flex; flex-wrap: wrap; gap: 8px;
    padding: 4px 0;
}
.tool-extra { display: flex; flex-direction: column; gap: 16px; }
.tool-extra-body:empty { display: none; }

/* ---------- Inputs / outputs ---------- */
.ta-code {
    flex: 1; width: 100%;
    padding: 16px;
    border: 0; outline: 0; resize: none;
    background: transparent;
    font-family: var(--font-mono); font-size: 14px; line-height: 1.6;
    color: var(--text-primary);
    min-height: 360px;
}
.ta-sm { min-height: 80px; }
.code-output {
    flex: 1; margin: 0;
    padding: 16px;
    background: transparent;
    overflow: auto;
    font-family: var(--font-mono); font-size: 14px; line-height: 1.6;
    white-space: pre-wrap; word-break: break-all;
}
.code-output:empty::before {
    content: "Output will appear here.";
    color: var(--text-secondary);
}

.input {
    padding: 8px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border); border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.9rem;
}
.input-sm { padding: 4px 8px; font-size: 0.85rem; }
.input-flex { width: 100%; }
.input:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent); }

.select {
    padding: 6px 28px 6px 10px;
    background: var(--bg-secondary); color: var(--text-primary);
    border: 1px solid var(--border); border-radius: 6px;
    font-size: 0.85rem;
    appearance: none;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2.5'><polyline points='6 9 12 15 18 9'/></svg>");
    background-repeat: no-repeat; background-position: right 8px center;
}

.opt { display: inline-flex; align-items: center; gap: 6px; font-size: 0.85rem; color: var(--text-secondary); }
.opt span { white-space: nowrap; }
.opt-check { cursor: pointer; user-select: none; }
.opt-check input { accent-color: var(--accent); }
.opt-stats { margin-left: auto; display: inline-flex; align-items: center; gap: 8px; font-size: 0.8rem; color: var(--text-secondary); font-family: var(--font-mono); }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    padding: 8px 14px;
    border: 1px solid var(--border); border-radius: 6px;
    background: var(--bg-secondary); color: var(--text-primary);
    font-size: 0.875rem; font-weight: 500;
    transition: background var(--transition), border-color var(--transition), transform 80ms ease;
}
.btn:hover { background: var(--bg-tertiary); border-color: color-mix(in srgb, var(--text-primary) 20%, var(--border)); }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--text-secondary); }
.btn-ghost:hover { color: var(--text-primary); background: var(--bg-tertiary); }
.btn-xs { padding: 2px 8px; font-size: 0.75rem; }
.btn-sm { padding: 4px 10px; font-size: 0.8rem; }

/* ---------- Segmented control ---------- */
.seg {
    display: inline-flex;
    background: var(--bg-tertiary);
    border-radius: 6px; padding: 2px;
}
.seg-btn {
    padding: 4px 12px;
    font-size: 0.825rem; font-weight: 500;
    color: var(--text-secondary); border-radius: 5px;
    transition: background var(--transition), color var(--transition);
}
.seg-btn.is-active { background: var(--bg-secondary); color: var(--text-primary); box-shadow: var(--shadow); }
.seg-btn:hover:not(.is-active) { color: var(--text-primary); }

/* ---------- Inline error ---------- */
.inline-error {
    margin: 0 16px 12px;
    padding: 10px 12px;
    background: color-mix(in srgb, var(--error) 10%, transparent);
    border: 1px solid color-mix(in srgb, var(--error) 30%, transparent);
    border-radius: 6px;
    color: var(--error); font-size: 0.875rem;
}
.tool-panel.is-error { border-color: color-mix(in srgb, var(--error) 50%, var(--border)); }

.validate-result { font-size: 0.875rem; font-family: var(--font-mono); }
.validate-result.is-ok { color: var(--success); }
.validate-result.is-bad { color: var(--error); }

.status-badge {
    padding: 3px 10px; border-radius: 999px;
    background: var(--bg-tertiary); color: var(--text-secondary);
    font-size: 0.75rem; font-family: var(--font-mono); letter-spacing: 0.04em;
}
.status-badge.is-ok { background: color-mix(in srgb, var(--success) 18%, transparent); color: var(--success); }
.status-badge.is-bad { background: color-mix(in srgb, var(--error) 18%, transparent); color: var(--error); }
.status-badge.is-warn { background: color-mix(in srgb, var(--warning) 18%, transparent); color: var(--warning); }

/* ---------- Tool-specific styles ---------- */

/* JSON syntax highlight */
.json-key { color: var(--accent); }
.json-string { color: var(--success); }
.json-number { color: var(--warning); }
.json-boolean { color: #8b5cf6; }
.json-null { color: var(--text-secondary); }

/* Stack helper */
.stack { display: flex; flex-direction: column; gap: 8px; padding: 16px; border-top: 1px solid var(--border); }
.tool-panel-body > .stack:first-child { border-top: 0; }
.stack-title { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-secondary); font-family: var(--font-mono); }

/* File info */
.file-info {
    margin: 0 16px 12px;
    padding: 8px 12px;
    background: var(--bg-tertiary); border-radius: 6px;
    font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-secondary);
}

/* Image preview */
.img-preview {
    padding: 16px;
    border-top: 1px solid var(--border);
}
.img-preview-label { font-family: var(--font-mono); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-secondary); }
.img-preview img { max-width: 100%; max-height: 240px; margin-top: 8px; border: 1px solid var(--border); border-radius: 6px; background: var(--bg-tertiary); }

/* URL breakdown */
.url-breakdown { padding: 16px; border-top: 1px solid var(--border); }
.url-breakdown h3 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-secondary); font-family: var(--font-mono); margin: 12px 0 8px; }
.kv-list { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 0; }
.kv-list dt { color: var(--text-secondary); font-size: 0.85rem; font-family: var(--font-mono); }
.kv-list dd { margin: 0; font-family: var(--font-mono); font-size: 0.85rem; word-break: break-all; }
.param-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.param-table th, .param-table td { padding: 6px 8px; text-align: left; border-bottom: 1px solid var(--border); }
.param-table th { font-family: var(--font-mono); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-secondary); }
.param-table td { font-family: var(--font-mono); word-break: break-all; }

/* UUID list */
.uuid-list { list-style: none; margin: 0; padding: 8px; display: flex; flex-direction: column; gap: 4px; overflow: auto; flex: 1; }
.uuid-list li {
    display: flex; align-items: center; gap: 8px;
    padding: 8px 12px;
    background: var(--bg-primary); border: 1px solid var(--border); border-radius: 6px;
    font-family: var(--font-mono); font-size: 0.875rem;
}
.uuid-list li .uuid-val { flex: 1; user-select: all; word-break: break-all; }
.uuid-list li button { padding: 2px 8px; font-size: 0.75rem; }

/* Regex */
.regex-input-row { display: flex; align-items: center; gap: 4px; padding: 12px 16px; border-bottom: 1px solid var(--border); }
.regex-slash { color: var(--text-secondary); font-family: var(--font-mono); font-size: 1.1rem; }
.regex-flags { font-family: var(--font-mono); color: var(--accent); padding: 0 6px; }
.input-flex { flex: 1; }
.regex-highlight {
    flex: 1; padding: 16px;
    font-family: var(--font-mono); font-size: 14px; line-height: 1.6;
    white-space: pre-wrap; word-break: break-word; overflow: auto;
    border-bottom: 1px solid var(--border);
}
.regex-highlight mark {
    background: color-mix(in srgb, var(--accent) 25%, transparent);
    color: var(--text-primary);
    padding: 0 2px; border-radius: 2px;
}
.regex-highlight mark + mark { margin-left: 1px; }
.regex-matches { padding: 12px 16px; font-size: 0.85rem; font-family: var(--font-mono); max-height: 240px; overflow: auto; }
.regex-match-item { padding: 8px 0; border-bottom: 1px dashed var(--border); }
.regex-match-item:last-child { border-bottom: none; }
.regex-match-idx { color: var(--text-secondary); font-size: 0.75rem; }
.regex-match-text { color: var(--accent); }

.sidebar-card {
    padding: 16px;
    background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius);
}
.sidebar-card h3 { font-family: var(--font-mono); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-secondary); margin-bottom: 12px; }
.cheat { display: grid; grid-template-columns: max-content 1fr; gap: 4px 12px; font-size: 0.8rem; }
.cheat dt code { color: var(--accent); }
.cheat dd { color: var(--text-secondary); margin: 0; }
.preset-list { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 4px; }
.preset {
    padding: 4px 10px;
    background: var(--bg-tertiary); border-radius: 999px;
    font-size: 0.8rem; color: var(--text-secondary);
    transition: background var(--transition), color var(--transition);
}
.preset:hover { background: color-mix(in srgb, var(--accent) 16%, var(--bg-tertiary)); color: var(--text-primary); }

/* JWT */
.jwt-colored { padding: 0 16px 16px; font-family: var(--font-mono); font-size: 0.85rem; word-break: break-all; line-height: 1.6; }
.jwt-piece-h { color: #ef4444; }
.jwt-piece-p { color: #a855f7; }
.jwt-piece-s { color: #06b6d4; }
.jwt-dot { color: var(--text-secondary); }
.jwt-output { display: flex; flex-direction: column; }
.jwt-section { padding: 16px; border-bottom: 1px solid var(--border); }
.jwt-section:last-child { border-bottom: none; }
.jwt-section h3 { font-family: var(--font-mono); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-secondary); margin-bottom: 8px; }
.jwt-header-section h3 { color: #ef4444; }
.jwt-payload-section h3 { color: #a855f7; }
.jwt-signature-section h3 { color: #06b6d4; }

/* Hash */
.hash-results { padding: 12px 16px; display: flex; flex-direction: column; gap: 12px; overflow: auto; flex: 1; }
.hash-row {
    display: grid; grid-template-columns: 90px 1fr auto; gap: 12px;
    align-items: center;
    padding: 10px 12px;
    background: var(--bg-primary); border: 1px solid var(--border); border-radius: 6px;
}
.hash-alg { font-family: var(--font-mono); font-size: 0.75rem; color: var(--accent); font-weight: 600; letter-spacing: 0.04em; }
.hash-val { font-family: var(--font-mono); font-size: 0.85rem; word-break: break-all; user-select: all; }

/* Progress */
.progress { margin: 0 16px 12px; height: 4px; background: var(--bg-tertiary); border-radius: 999px; overflow: hidden; position: relative; }
.progress-bar { height: 100%; width: 0; background: var(--accent); transition: width 120ms linear; }
.progress-label { position: absolute; top: 8px; left: 0; font-size: 0.75rem; color: var(--text-secondary); }

/* JSON tree */
.json-tree { font-family: var(--font-mono); font-size: 13px; padding: 8px 16px; }
.json-tree details { margin-left: 12px; }
.json-tree summary { cursor: pointer; }
.json-tree .json-key::after { content: ": "; color: var(--text-secondary); }

/* ---------- About sections (tool) ---------- */
.tool-about { margin-top: 48px; }
.prose { max-width: 760px; }
.prose h2 { font-size: 1.5rem; margin-bottom: 12px; }
.prose h3 { font-size: 1.1rem; margin-top: 22px; margin-bottom: 8px; }
.prose p { margin-bottom: 12px; color: var(--text-secondary); }
.prose ul { padding-left: 22px; color: var(--text-secondary); margin-bottom: 12px; }
.prose code { background: var(--bg-tertiary); padding: 1px 6px; border-radius: 4px; font-size: 0.85em; color: var(--text-primary); }
.prose a { color: var(--accent); text-decoration: none; border-bottom: 1px solid color-mix(in srgb, var(--accent) 40%, transparent); }
.prose a:hover { border-bottom-color: var(--accent); }

/* ---------- Related tools ---------- */
.related-tools { margin-top: 48px; padding-top: 32px; border-top: 1px solid var(--border); }
.related-tools-title { margin-bottom: 16px; font-family: var(--font-mono); font-size: 1.1rem; }
.related-tools-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 12px; }
.related-tool-card {
    display: flex; gap: 12px; align-items: center;
    padding: 12px 14px;
    background: var(--bg-secondary); border: 1px solid var(--border); border-radius: 8px;
    text-decoration: none; color: var(--text-primary);
    transition: border-color var(--transition), transform var(--transition);
}
.related-tool-card:hover { border-color: color-mix(in srgb, var(--accent) 50%, var(--border)); transform: translateY(-1px); }
.related-tool-icon {
    flex-shrink: 0; width: 32px; height: 32px;
    display: grid; place-items: center;
    background: var(--bg-tertiary); border-radius: 6px;
    font-family: var(--font-mono); font-weight: 600; font-size: 0.8rem;
    color: var(--accent);
}
.related-tool-body { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.related-tool-name { font-weight: 600; font-size: 0.9rem; }
.related-tool-desc { color: var(--text-secondary); font-size: 0.8rem; }

/* ---------- Ad slots ---------- */
.ad-slot { background: var(--bg-secondary); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px; text-align: center; }
.ad-slot-label { font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-secondary); margin-bottom: 8px; }
.ad-slot-sidebar {
    position: sticky;
    top: calc(var(--header-h) + 16px);
    max-height: calc(100vh - var(--header-h) - 32px);
}
.ad-slot-sidebar .ad-slot-container { min-height: 250px; background: var(--bg-tertiary); border-radius: 4px; }
.ad-slot-mobile { display: none; margin: 24px 0; }
.ad-slot-mobile .ad-slot-container { min-height: 100px; background: var(--bg-tertiary); border-radius: 4px; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); margin-top: 64px; background: var(--bg-secondary); }
.site-footer-inner {
    max-width: var(--max-w); margin: 0 auto; padding: 16px 24px;
    display: flex; flex-wrap: wrap; align-items: center; gap: 16px 32px;
}
.site-footer-brand { display: inline-flex; align-items: center; gap: 8px; font-family: var(--font-mono); font-weight: 600; }
.footer-tag { color: var(--text-secondary); font-weight: 400; font-family: var(--font-sans); }
.footer-nav { display: flex; flex-wrap: wrap; gap: 18px; }
.footer-nav a { color: var(--text-secondary); text-decoration: none; font-size: 0.9rem; }
.footer-nav a:hover { color: var(--text-primary); }
.footer-copy { margin-left: auto; color: var(--text-secondary); font-size: 0.8rem; }

/* ---------- Toast ---------- */
.toast-container {
    position: fixed; bottom: 24px; right: 24px;
    display: flex; flex-direction: column; gap: 8px;
    z-index: 200;
    pointer-events: none;
}
.toast {
    padding: 10px 14px;
    background: var(--bg-secondary); border: 1px solid var(--border); border-radius: 8px;
    box-shadow: var(--shadow-lg);
    font-size: 0.875rem; font-weight: 500;
    pointer-events: auto;
    animation: toastIn 200ms ease;
}
.toast-success { border-color: color-mix(in srgb, var(--success) 50%, var(--border)); }
.toast-error { border-color: color-mix(in srgb, var(--error) 50%, var(--border)); }
.toast-info { border-color: color-mix(in srgb, var(--accent) 50%, var(--border)); }
@keyframes toastIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---------- Drop zone state ---------- */
[data-dropzone].is-dragover { background: color-mix(in srgb, var(--accent) 6%, transparent); outline: 2px dashed var(--accent); outline-offset: -8px; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .tool-shell { grid-template-columns: 1fr; }
    .tool-sidebar { order: 2; }
    .ad-slot-sidebar { display: none; }
    .ad-slot-mobile { display: block; }
}
@media (max-width: 768px) {
    .primary-nav { display: none; }
    .icon-btn-mobile { display: grid; }
    .tool-panels { grid-template-columns: 1fr; }
    .tool-options { padding: 10px 12px; }
    h1 { font-size: 1.5rem; }
    .tool-title { font-size: 1.4rem; }
    .hero { padding: 48px 20px 36px; }
    .hero-stats { gap: 20px; }
    .content-section { padding: 32px 20px; }
    .tool-page { padding: 24px 16px 48px; }
    .site-footer-inner { flex-direction: column; align-items: flex-start; }
    .footer-copy { margin-left: 0; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { transition: none !important; animation: none !important; }
}