/*
 * tools.nisi.ro — hand-built stylesheet.
 * Design tokens ported from website/app/Views/layouts/main.php.
 * No frameworks, no external requests.
 */

:root {
    --background: #0A0A0A;
    --surface:    #131313;
    --surface-2:  #1c1b1b;
    --surface-3:  #201f1f;
    --surface-4:  #2a2a2a;
    --line:       #1f2937;
    --outline:    #424754;
    --text:       #e5e2e1;
    --muted:      #c2c6d6;
    --primary:    #3b82f6;
    --secondary:  #10b981;
    --error:      #ffb4ab;
    --font-sans:  "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
    --font-mono:  "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
    --radius:     6px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background-color: var(--background);
    background-image:
        linear-gradient(to right, rgba(31, 41, 55, 0.45) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(31, 41, 55, 0.45) 1px, transparent 1px);
    background-size: 40px 40px;
    color: var(--text);
    font-family: var(--font-sans);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

h1 { font-size: 2.25rem; line-height: 1.2; margin: 0 0 .75rem; color: #fff; }
h2 { font-size: 1.5rem; margin: 2rem 0 .75rem; color: #fff; }
h3 { font-size: 1.1rem; margin: 1.25rem 0 .5rem; color: #fff; }
code, pre { font-family: var(--font-mono); }
.muted { color: var(--muted); }
.lede { font-size: 1.1rem; color: var(--muted); max-width: 46rem; }

.container { max-width: 72rem; margin: 0 auto; padding: 0 1.5rem; width: 100%; }

/* Header — mirrors the main site's sticky bar */
.site-header {
    position: sticky; top: 0; z-index: 50;
    border-bottom: 1px solid rgba(31,41,55,.8);
    background: rgba(10,10,10,.9);
    backdrop-filter: blur(8px);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding-top: 1rem; padding-bottom: 1rem; gap: 1rem; flex-wrap: wrap; }
.brand { font-family: var(--font-mono); font-size: .8rem; font-weight: 700; letter-spacing: .25em; color: var(--text); }
.brand:hover { text-decoration: none; color: var(--primary); }
.site-nav { display: flex; gap: 1.25rem; font-size: .875rem; flex-wrap: wrap; }
.site-nav a { color: var(--muted); }
.site-nav a:hover, .site-nav a.active { color: var(--primary); text-decoration: none; }
.nav-external { opacity: .75; }

/* Breadcrumbs */
.breadcrumbs { font-family: var(--font-mono); font-size: .75rem; padding-top: 1.25rem; color: var(--muted); }
.breadcrumbs a { color: var(--muted); }
.breadcrumbs .sep { margin: 0 .5rem; color: var(--outline); }

/* Layout with tower slot */
.page-main { flex: 1; padding-bottom: 3rem; }
.page-with-tower { max-width: 72rem; margin: 0 auto; width: 100%; display: grid; grid-template-columns: 1fr; gap: 1.5rem; padding: 0 1.5rem; }
.page-with-tower .page-main { padding: 0; }
.page-tower { display: none; }
@media (min-width: 64rem) {
    .page-with-tower { grid-template-columns: 1fr 320px; }
    .page-tower { display: block; }
}

/* Ad slots (dummy styling — real code replaces partial markup) */
.ad-slot {
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .25rem;
    border: 1px dashed var(--outline);
    background: var(--surface);
    border-radius: var(--radius);
    margin: 1.5rem auto;
    color: var(--muted);
}
.ad-leaderboard { max-width: 728px; min-height: 90px; width: 100%; }
.ad-tower { width: 300px; min-height: 600px; position: sticky; top: 5rem; }
.ad-label { font-family: var(--font-mono); font-size: .65rem; letter-spacing: .2em; text-transform: uppercase; }
.ad-size { font-family: var(--font-mono); font-size: .75rem; }

/* Hero / cards */
.hero { padding: 3.5rem 1.5rem 1rem; }
.kicker { display: inline-flex; align-items: center; gap: .5rem; border: 1px solid var(--outline); background: var(--surface-3); padding: .3rem .75rem; font-family: var(--font-mono); font-size: .7rem; letter-spacing: .28em; text-transform: uppercase; color: var(--muted); }
.kicker .dot, .dot { width: .5rem; height: .5rem; border-radius: 50%; background: var(--secondary); display: inline-block; }

.category-block { padding-top: 2.5rem; }
.category-head { display: flex; align-items: baseline; gap: 1rem; flex-wrap: wrap; margin-bottom: 1rem; }
.category-head h2 { margin: 0; }
.category-head h2 a { color: #fff; }

.card-grid { display: grid; gap: 1.25rem; grid-template-columns: 1fr; }
@media (min-width: 48rem) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 64rem) { .card-grid { grid-template-columns: repeat(3, 1fr); } }

.blueprint-panel, .tech-card {
    background: linear-gradient(180deg, rgba(19,19,19,.95), rgba(10,10,10,.98));
    border: 1px solid var(--line);
    border-radius: var(--radius);
}
.tech-card { transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease; }
.tech-card:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 0 24px rgba(59,130,246,.12);
}
.card-link { display: block; padding: 1.5rem; color: var(--text); }
.card-link:hover { text-decoration: none; }
.card-link h3 { margin: .25rem 0 .5rem; }
.card-kicker { font-family: var(--font-mono); font-size: .7rem; letter-spacing: .22em; text-transform: uppercase; color: var(--primary); margin: 0; display: flex; align-items: center; gap: .5rem; }
.badge { font-size: .6rem; letter-spacing: .12em; border: 1px solid var(--outline); border-radius: 999px; padding: .1rem .5rem; color: var(--muted); }

/* Tool UI */
.tool-head { padding-top: 1.5rem; }
.privacy-note { font-family: var(--font-mono); font-size: .8rem; color: var(--secondary); border-left: 3px solid var(--secondary); padding-left: .75rem; }

.tool-app { margin-top: 1.5rem; }
.tool-toolbar {
    display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between;
    padding: .75rem 1rem; margin-bottom: 1rem;
    background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--radius);
}
.btn-group { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; }

.btn {
    font-family: var(--font-mono); font-size: .75rem; font-weight: 700;
    letter-spacing: .14em; text-transform: uppercase;
    padding: .5rem 1rem; border: 1px solid var(--line); border-radius: var(--radius);
    background: transparent; color: var(--text); cursor: pointer;
    transition: border-color .15s, color .15s, background .15s;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #0A0A0A; }
.btn-primary:hover { color: #0A0A0A; filter: brightness(1.1); }

.tool-panes { display: grid; gap: 1rem; grid-template-columns: 1fr; }
@media (min-width: 64rem) { .tool-panes { grid-template-columns: 1fr 1fr; } }
.pane-label { display: block; font-family: var(--font-mono); font-size: .7rem; letter-spacing: .2em; text-transform: uppercase; color: var(--muted); margin-bottom: .4rem; }

.input, .output {
    width: 100%;
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
    color: var(--text); font-size: .85rem; padding: .75rem 1rem;
}
.input:focus { outline: none; border-color: var(--primary); }
.input-inline { width: auto; padding: .4rem .5rem; }
.code { font-family: var(--font-mono); line-height: 1.5; }
textarea.code { resize: vertical; min-height: 18rem; }
pre.output { margin: 0; min-height: 18rem; overflow: auto; white-space: pre-wrap; word-break: break-word; }

.status-line { min-height: 1.5rem; font-family: var(--font-mono); font-size: .8rem; margin: .75rem 0 0; }
.status-ok { color: var(--secondary); }
.status-error { color: var(--error); }

/* JSON syntax colours (match main-site tool template) */
.syntax-string { color: #4edea3; }
.syntax-number { color: #adc6ff; }
.syntax-boolean, .syntax-null { color: #ffb4ab; }
.syntax-key { color: #e5e2e1; font-weight: 500; }

/* Shared controls and result layouts */
.field-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: 1rem; margin-bottom: 1rem; }
.field-grid.compact { grid-template-columns: minmax(15rem, 1fr) 7rem; }
.field-grid label, .tool-app > label { display: grid; gap: .4rem; color: var(--muted); font-size: .85rem; }
.result-grid { display: grid; grid-template-columns: 1fr; gap: 1rem; }
@media (min-width: 48rem) { .result-grid { grid-template-columns: 1fr 1fr; } }
.output-short { min-height: 6rem !important; }
.data-list { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.data-row { display: grid; grid-template-columns: minmax(7rem, .4fr) 1fr; gap: 1rem; padding: .65rem .8rem; border-bottom: 1px solid var(--line); background: var(--surface); overflow-wrap: anywhere; }
.data-row:last-child { border-bottom: 0; }
.data-row code { color: var(--muted); }
.inline-action { display: flex; gap: .5rem; }
.inline-action .input { flex: 1; }
.file-control { margin-top: 1rem; }
.check { display: flex; align-items: center; gap: .4rem; color: var(--muted); }
.stat-strip { padding: 1rem; margin-bottom: 1rem; background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--radius); }
.stat-strip span { display: block; color: var(--muted); font-size: .75rem; text-transform: uppercase; letter-spacing: .12em; }
.stat-strip strong { font-size: 1.5rem; color: var(--secondary); }
.counter-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(8rem, 1fr)); gap: 1px; min-height: 6rem; margin-bottom: 1rem; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--line); }
.counter-stats div { display: flex; flex-direction: column; justify-content: center; min-height: 6rem; padding: .75rem; background: var(--surface); text-align: center; }
.counter-stats strong { color: var(--secondary); font-family: var(--font-mono); font-size: 1.4rem; }
.counter-stats span { color: var(--muted); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; }
.counter-input { min-height: 22rem; font-size: 1rem; line-height: 1.7; }
.field-wide { grid-column: 1 / -1; }
.qr-layout { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
@media (min-width: 56rem) { .qr-layout { grid-template-columns: minmax(0, 1fr) minmax(18rem, .75fr); } }
.qr-controls, .qr-preview-panel { padding: 1.25rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.qr-controls > label, #qr-fields label { display: grid; gap: .4rem; margin-bottom: 1rem; color: var(--muted); font-size: .85rem; }
.qr-preview-panel { display: flex; flex-direction: column; align-items: center; justify-content: flex-start; }
.qr-preview-panel canvas { width: min(100%, 32rem); height: auto; background: #fff; image-rendering: pixelated; }
.qr-preview-panel p { max-width: 100%; overflow-wrap: anywhere; font-size: .75rem; }
.color-input { min-height: 2.75rem; padding: .25rem; cursor: pointer; }
.image-drop { display: flex; min-height: 13rem; flex-direction: column; align-items: center; justify-content: center; gap: .5rem; padding: 2rem; border: 2px dashed var(--outline); border-radius: var(--radius); background: var(--surface); color: var(--muted); text-align: center; cursor: pointer; transition: border-color .2s, background .2s; }
.image-drop:hover, .image-drop.drag-over { border-color: var(--primary); background: var(--surface-2); }
.image-drop strong { color: var(--text); font-size: 1.25rem; }
.image-drop input { margin-top: .75rem; max-width: 100%; }
.image-comparison { display: grid; grid-template-columns: 1fr; gap: 1rem; margin: 1rem 0; }
@media (min-width: 48rem) { .image-comparison { grid-template-columns: 1fr 1fr; } }
.image-comparison article { min-width: 0; padding: 1rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.image-comparison h2 { margin-top: 0; }
.image-comparison img { display: block; width: 100%; height: min(24rem, 50vw); object-fit: contain; background-color: var(--surface-2); background-image: linear-gradient(45deg, var(--surface-3) 25%, transparent 25%), linear-gradient(-45deg, var(--surface-3) 25%, transparent 25%), linear-gradient(45deg, transparent 75%, var(--surface-3) 75%), linear-gradient(-45deg, transparent 75%, var(--surface-3) 75%); background-size: 20px 20px; background-position: 0 0, 0 10px, 10px -10px, -10px 0; }
.image-meta { margin-top: .75rem; color: var(--muted); font-family: var(--font-mono); font-size: .75rem; overflow-wrap: anywhere; }
.preset-list { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1rem; }
input[type="range"] { width: 100%; accent-color: var(--primary); }
.color-hero { display: grid; grid-template-columns: 5rem 8rem minmax(12rem, 1fr); align-items: end; gap: 1rem; margin-bottom: 1rem; }
.color-hero > input[type="color"] { width: 5rem; height: 4rem; padding: .2rem; border: 1px solid var(--line); background: var(--surface); cursor: pointer; }
.color-hero label, .color-values label, .contrast-inputs label { display: grid; gap: .4rem; color: var(--muted); font-size: .85rem; }
.color-swatch { height: 4rem; border: 1px solid var(--line); border-radius: var(--radius); }
.color-values { display: grid; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); gap: 1rem; }
.palette-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(8rem, 1fr)); gap: .65rem; }
.palette-chip { padding: 0; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); color: var(--text); cursor: pointer; text-align: left; }
.palette-chip span { display: block; height: 4rem; background: var(--chip); }
.palette-chip strong, .palette-chip code { display: block; padding: .25rem .5rem; }
.palette-chip code { color: var(--muted); font-size: .7rem; }
.contrast-inputs { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 1rem; }
.contrast-inputs > div { display: grid; grid-template-columns: 5rem 1fr; align-items: end; gap: .75rem; }
.contrast-inputs input[type="color"] { width: 5rem; height: 2.75rem; padding: .15rem; border: 1px solid var(--line); background: var(--surface); }
.contrast-summary { display: flex; flex-direction: column; align-items: center; margin: 1rem 0; padding: 1.5rem; border: 1px solid var(--line); background: var(--surface); }
.contrast-summary strong { color: var(--secondary); font-family: var(--font-mono); font-size: 3rem; }
.contrast-summary span { color: var(--muted); }
.criteria-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr)); gap: 1rem; }
.criteria-grid article { padding: 1rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.result-badge { float: right; padding: .05rem .45rem; border-radius: 999px; font-size: .7rem; font-weight: 700; }
.result-badge.pass { background: rgba(16,185,129,.18); color: #4edea3; }
.result-badge.fail { background: rgba(255,180,171,.12); color: var(--error); }
.contrast-preview { margin: 1rem 0; padding: 2rem; border: 1px solid var(--line); border-radius: var(--radius); }
.contrast-preview .large-sample { font-size: 1.5rem; }
.contrast-preview button { padding: .65rem 1rem; border: 2px solid currentColor; background: transparent; color: inherit; }
@media (max-width: 42rem) { .color-hero, .contrast-inputs { grid-template-columns: 1fr; } .contrast-inputs > div { grid-template-columns: 4rem 1fr; } .contrast-swap { justify-self: start; } }
.warning-note { border-left: 3px solid var(--error); padding: .75rem; background: rgba(255,180,171,.08); color: var(--error); }
mark { background: rgba(59,130,246,.35); color: #fff; border-bottom: 2px solid var(--primary); }
.markdown-preview { min-height: 33rem; }
.markdown-preview h1, .markdown-preview h2, .markdown-preview h3 { margin-top: 1rem; }
.markdown-preview pre { padding: .75rem; background: var(--background); overflow: auto; }
.markdown-preview input { accent-color: var(--secondary); }

/* Content sections */
.content { padding-bottom: 1rem; max-width: 52rem; }
.content ul { padding-left: 1.25rem; }
.related-tools { padding-top: 1rem; }
.section-title { margin-top: 0; }
.page-meta { padding-bottom: 2rem; font-size: .85rem; }

/* Footer — mirrors the main site */
.site-footer { border-top: 1px solid rgba(31,41,55,.8); background: rgba(19,19,19,.8); margin-top: auto; }
.footer-inner { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; justify-content: space-between; padding-top: 2rem; padding-bottom: 2rem; font-size: .875rem; color: var(--muted); }
.footer-inner p { margin: 0; }
.footer-nav { display: flex; gap: 1rem; }
.footer-nav a { color: var(--muted); }
.footer-nav a:hover { color: var(--text); }