/* ============================================================
   Forklift Teknik Dokuman Kutuphanesi
   Tasarim dili: koyu "atolye panosu" temasi - guvenlik-turuncusu
   vurgu, model kodlari icin mono yazi tipi, teknisyen odakli.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@500;600;700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@500;600&display=swap');

:root {
    --bg: #12161b;
    --bg-grid: #161c22;
    --surface: #1a2029;
    --surface-2: #212a34;
    --surface-hover: #27313d;
    --border: #2a323d;
    --border-soft: #232b35;
    --text: #edf1f5;
    --text-dim: #93a0ad;
    --text-faint: #5c6672;

    --accent: #ff7a1a;
    --accent-2: #ffab5c;
    --accent-soft: rgba(255, 122, 26, 0.14);
    --focus: #ffb066;

    --c-diesel: #ff7a1a;
    --c-diesel-soft: rgba(255, 122, 26, 0.14);
    --c-lpg: #4c9fe8;
    --c-lpg-soft: rgba(76, 159, 232, 0.14);
    --c-battery: #3dd68c;
    --c-battery-soft: rgba(61, 214, 140, 0.14);
    --c-warehouse: #b98ce8;
    --c-warehouse-soft: rgba(185, 140, 232, 0.14);
    --c-engine: #e8c34c;
    --c-engine-soft: rgba(232, 195, 76, 0.14);
    --c-other: #8d99a6;
    --c-other-soft: rgba(141, 153, 166, 0.14);

    --c-excavator: #e0714a;
    --c-excavator-soft: rgba(224, 113, 74, 0.14);
    --c-loader: #4ca3e8;
    --c-loader-soft: rgba(76, 163, 232, 0.14);
    --c-roller: #9c6fe0;
    --c-roller-soft: rgba(156, 111, 224, 0.14);
    --c-grader: #d9527a;
    --c-grader-soft: rgba(217, 82, 122, 0.14);
    --c-dumptruck: #7a9c4c;
    --c-dumptruck-soft: rgba(122, 156, 76, 0.14);
    --c-dozer: #5c7cc4;
    --c-dozer-soft: rgba(92, 124, 196, 0.14);
    --c-attachment: #c2703d;
    --c-attachment-soft: rgba(194, 112, 61, 0.14);
    --c-circuit: #4ecbc4;
    --c-circuit-soft: rgba(78, 203, 196, 0.14);

    --radius: 10px;
    --radius-sm: 7px;
    --font-display: 'Oswald', 'Arial Narrow', sans-serif;
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Roboto Mono', monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    margin: 0;
    background:
        linear-gradient(180deg, var(--bg) 0%, var(--bg) 100%),
        repeating-linear-gradient(135deg, var(--bg-grid) 0 2px, transparent 2px 34px);
    color: var(--text);
    font-family: var(--font-body);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

::selection { background: var(--accent-soft); color: var(--accent-2); }

:focus-visible {
    outline: 2px solid var(--focus);
    outline-offset: 2px;
    border-radius: 4px;
}

/* ---------- Header ---------- */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(18, 22, 27, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 18px 20px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.brand-mark {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #1a1206;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 16px;
    flex-shrink: 0;
}

.brand-text {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 17px;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    white-space: nowrap;
}

.brand-text small {
    display: block;
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 11.5px;
    text-transform: none;
    letter-spacing: 0;
    color: var(--text-dim);
    margin-top: 1px;
}

.search-wrap {
    position: relative;
    flex: 1 1 260px;
    min-width: 220px;
}

.search-wrap svg {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 17px;
    height: 17px;
    color: var(--text-faint);
    pointer-events: none;
}

#search {
    width: 100%;
    background: var(--surface);
    border: 1.5px solid var(--border);
    color: var(--text);
    font-family: var(--font-mono);
    font-size: 14.5px;
    padding: 11px 14px 11px 40px;
    border-radius: var(--radius);
    transition: border-color .15s, background .15s;
}

#search::placeholder { color: var(--text-faint); font-family: var(--font-body); }

#search:focus {
    border-color: var(--accent);
    background: var(--surface-2);
    outline: none;
}

.search-count {
    flex-shrink: 0;
    font-size: 12.5px;
    color: var(--text-dim);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

.search-count strong { color: var(--accent-2); font-weight: 600; }

/* ---------- Tabs ---------- */

.tabs-bar {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    gap: 8px;
    overflow-x: auto;
}

.tab-btn {
    appearance: none;
    background: transparent;
    border: none;
    color: var(--text-dim);
    font-family: var(--font-display);
    font-size: 13.5px;
    font-weight: 500;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    padding: 13px 4px 11px;
    margin-bottom: -1px;
    border-bottom: 2.5px solid transparent;
    cursor: pointer;
    white-space: nowrap;
    transition: color .15s, border-color .15s;
}

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

.tab-btn.active {
    color: var(--accent-2);
    border-bottom-color: var(--accent);
}

.tab-btn .count {
    font-family: var(--font-mono);
    color: var(--text-faint);
    font-size: 11.5px;
    margin-left: 4px;
}

.tab-btn.active .count { color: var(--accent); }

/* ---------- Main ---------- */

main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 22px 20px 80px;
}

.category-panel { display: none; }
.category-panel.active { display: block; }

.category-label {
    display: none;
    font-family: var(--font-display);
    font-size: 12.5px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--accent-2);
    margin: 22px 0 8px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border-soft);
}
.category-label:first-child { margin-top: 0; }

main.search-mode .category-panel { display: block; }
main.search-mode .category-label { display: block; }
main.search-mode .category-panel.empty-in-search { display: none; }

.empty-state {
    text-align: center;
    padding: 70px 20px;
    color: var(--text-dim);
}

.empty-state .big {
    font-family: var(--font-display);
    font-size: 22px;
    color: var(--text);
    margin-bottom: 6px;
    text-transform: uppercase;
}

/* ---------- Series (accordion) ---------- */

.series-block {
    border: 1px solid var(--border-soft);
    border-radius: var(--radius);
    margin-bottom: 10px;
    overflow: hidden;
    background: var(--surface);
}

.series-block[hidden] { display: none; }

.series-head {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    color: var(--text);
}

.series-head:hover { background: var(--surface-hover); }

.series-icon {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.series-icon svg { width: 18px; height: 18px; }

.icon-diesel  { background: var(--c-diesel-soft);   color: var(--c-diesel); }
.icon-lpg     { background: var(--c-lpg-soft);      color: var(--c-lpg); }
.icon-battery { background: var(--c-battery-soft);  color: var(--c-battery); }
.icon-warehouse { background: var(--c-warehouse-soft); color: var(--c-warehouse); }
.icon-engine  { background: var(--c-engine-soft);   color: var(--c-engine); }
.icon-other   { background: var(--c-other-soft);    color: var(--c-other); }
.icon-excavator { background: var(--c-excavator-soft); color: var(--c-excavator); }
.icon-loader  { background: var(--c-loader-soft);   color: var(--c-loader); }
.icon-roller  { background: var(--c-roller-soft);   color: var(--c-roller); }
.icon-grader  { background: var(--c-grader-soft);   color: var(--c-grader); }
.icon-dumptruck { background: var(--c-dumptruck-soft); color: var(--c-dumptruck); }
.icon-dozer   { background: var(--c-dozer-soft);    color: var(--c-dozer); }
.icon-attachment { background: var(--c-attachment-soft); color: var(--c-attachment); }
.icon-circuit { background: var(--c-circuit-soft);  color: var(--c-circuit); }

.series-title {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 15.5px;
    letter-spacing: 0.01em;
    flex: 1;
}

.series-count {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-faint);
    background: var(--surface-2);
    border-radius: 20px;
    padding: 3px 10px;
    flex-shrink: 0;
}

.chevron {
    width: 16px; height: 16px;
    color: var(--text-faint);
    transition: transform .18s;
    flex-shrink: 0;
}
.series-block.open .chevron { transform: rotate(180deg); }

.series-body {
    display: none;
    padding: 4px 16px 16px;
    border-top: 1px solid var(--border-soft);
}
.series-block.open .series-body { display: block; padding-top: 14px; }

.manual-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.manual-chip {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 500;
    color: var(--text);
    text-decoration: none;
    transition: border-color .12s, background .12s, transform .12s;
}

.manual-chip:hover {
    border-color: var(--accent);
    background: var(--surface-hover);
    transform: translateY(-1px);
}

.manual-chip svg {
    width: 13px; height: 13px;
    color: var(--text-faint);
    flex-shrink: 0;
}
.manual-chip:hover svg { color: var(--accent-2); }

.manual-chip.no-match { display: none; }
.manual-chip mark {
    background: var(--accent);
    color: #1a1206;
    border-radius: 2px;
    padding: 0 1px;
}

.no-results {
    text-align: center;
    padding: 50px 20px;
    color: var(--text-dim);
    display: none;
}
.no-results.show { display: block; }
.no-results .big {
    font-family: var(--font-display);
    font-size: 19px;
    color: var(--text);
    text-transform: uppercase;
    margin-bottom: 6px;
}

footer {
    max-width: 1100px;
    margin: 0 auto;
    padding: 10px 20px 40px;
    color: var(--text-faint);
    font-size: 12px;
    text-align: center;
}
footer a { color: var(--text-dim); text-decoration: underline; text-underline-offset: 2px; }

/* ---------- Mobile ---------- */

@media (max-width: 640px) {
    .header-inner { padding: 14px 16px; gap: 10px; }
    .brand-text { font-size: 15px; }
    .search-count { display: none; }
    main { padding: 16px 12px 60px; }
    .manual-chip { font-size: 12.5px; padding: 8px 10px; }
    .series-title { font-size: 14px; }
}

@media (prefers-reduced-motion: reduce) {
    * { transition-duration: 0.001ms !important; animation-duration: 0.001ms !important; }
}