/* --- Design tokens --- */
:root {
    --bg: #ffffff;
    --bg-elev: #fafafa;
    --text: #0f172a;
    --muted: #475569;
    --border: #e2e8f0;
    --ring: #94a3b8;
    --card: #ffffff;
    --accent: #111827;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0b0f19;
        --bg-elev: #0f1422;
        --text: #e5e7eb;
        --muted: #94a3b8;
        --border: #1f2937;
        --ring: #64748b;
        --card: #0f1422;
        --accent: #f8fafc;
    }
}

/* --- Base --- */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
    margin: 0;
    font: 16px/1.5 ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica Neue, Arial, "Apple Color Emoji", "Segoe UI Emoji";
    background: var(--bg);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
a { color: inherit; text-decoration: none; }
.container { max-width: 1152px; margin: 0 auto; padding: 24px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* --- Header --- */
header {
    position: sticky; top: 0; z-index: 30;
    background: color-mix(in srgb, var(--bg), transparent 0%);
    backdrop-filter: saturate(1.2) blur(4px);
    border-bottom: 1px solid var(--border);
}
.nav { display: flex; align-items: center; gap: 16px; padding: 14px 24px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: .2px; color: var(--text); }
.brand:hover { opacity: 0.8; }
.logo { width: 22px; height: 22px; border-radius: 6px; background: var(--text); position: relative; }
.logo::after { content: ""; position: absolute; inset: 5px 4px 5px 4px; border: 2px solid var(--bg); border-radius: 4px; }
.nav-spacer { flex: 1; }

.pill {
    display: inline-flex; align-items: center; gap: 10px; padding: 10px 12px; border: 1px solid var(--border);
    background: var(--bg-elev); border-radius: 12px; min-width: 240px; cursor: text;
}
.pill svg { flex: 0 0 auto; }
.pill input { border: 0; outline: none; background: transparent; color: var(--text); width: 100%; font-size: 14px; }
.pill input::placeholder { color: var(--muted); }
.kbd { font-size: 12px; padding: 2px 6px; border: 1px solid var(--border); border-bottom-width: 2px; border-radius: 6px; color: var(--muted); }

.icon-btn {
    border: 1px solid var(--border); background: var(--bg-elev); border-radius: 12px; padding: 10px; 
    display: inline-flex; align-items: center; gap: 8px; cursor: pointer; color: var(--text);
}
.icon-btn:hover { background: var(--border); }
.icon-btn[aria-pressed="true"] { outline: 2px solid var(--ring); }

/* --- Hero / Filters --- */
.hero { 
    display: grid; grid-template-columns: 1fr; gap: 18px; 
    padding: 20px 24px; border-bottom: 1px solid var(--border); 
    background: var(--bg-elev); 
}
.hero h1 { 
    font-size: clamp(22px, 3.6vw, 32px); 
    margin: 4px 0; letter-spacing: .2px; 
}
.muted { color: var(--muted); }

.filters { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { 
    border: 1px solid var(--border); background: var(--bg); 
    padding: 6px 10px; border-radius: 999px; cursor: pointer; 
    font-size: 13px; transition: all 0.2s ease;
}
.chip:hover { background: var(--bg-elev); }
.chip[aria-pressed="true"] { 
    background: var(--text); color: var(--bg); 
    font-weight: 600;
}

/* --- Main Content --- */
main { min-height: calc(100vh - 200px); }

/* --- Toolbar --- */
.toolbar { 
    display: flex; gap: 10px; align-items: center; 
    justify-content: space-between; margin: 12px 0 16px; 
    flex-wrap: wrap;
}
.view { 
    display: inline-flex; border: 1px solid var(--border); 
    border-radius: 10px; overflow: hidden; 
}
.view button { 
    padding: 8px 10px; background: var(--bg); border: 0; 
    border-right: 1px solid var(--border); cursor: pointer; 
    color: var(--text);
}
.view button:last-child { border-right: none; }
.view button:hover { background: var(--bg-elev); }
.view button[aria-pressed="true"] { 
    background: var(--text); color: var(--bg); font-weight: 600; 
}

.sort-select {
    padding: 8px 10px; 
    border: 1px solid var(--border); 
    background: var(--bg); 
    color: var(--text); 
    border-radius: 10px;
    font-size: 14px;
}

/* --- Tool Grid --- */
.grid { 
    display: grid; grid-template-columns: repeat(1, minmax(0, 1fr)); 
    gap: 12px; 
}
@media (min-width: 560px) { 
    .grid { grid-template-columns: repeat(2, 1fr); } 
}
@media (min-width: 880px) { 
    .grid { grid-template-columns: repeat(3, 1fr); } 
}
@media (min-width: 1136px) { 
    .grid { grid-template-columns: repeat(4, 1fr); } 
}

.card { 
    display: grid; grid-template-columns: 48px 1fr auto; 
    align-items: center; gap: 12px; padding: 14px; 
    border: 1px solid var(--border); border-radius: 14px; 
    background: var(--card); 
    transition: transform .06s ease, box-shadow .06s ease;
    cursor: pointer;
}
.card:hover { 
    transform: translateY(-1px); 
    box-shadow: 0 1px 0 rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.06); 
}
.card .ic { 
    width: 44px; height: 44px; border-radius: 10px; 
    border: 1px solid var(--border); display: grid; 
    place-items: center; background: var(--bg-elev);
}
.card h3 { font-size: 15px; margin: 0; }
.card p { font-size: 13px; margin: 2px 0 0; color: var(--muted); }

.fav { 
    border: 0; background: transparent; 
    width: 36px; height: 36px; border-radius: 10px; 
    cursor: pointer; display: grid; place-items: center;
    color: var(--muted); font-size: 16px;
    transition: all 0.2s ease;
}
.fav:hover { 
    background: var(--bg-elev); 
    color: var(--text);
}
.fav[aria-pressed="true"] { 
    color: #f59e0b; 
    background: #fef3c7;
}

/* List view styles */
.list .grid { grid-template-columns: 1fr; }
.list .card { grid-template-columns: 36px 1fr auto; }
.list .card .ic { width: 32px; height: 32px; border-radius: 8px; }

/* --- Search Results Dropdown --- */
.search-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-top: 4px;
    max-height: 300px;
    overflow-y: auto;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    z-index: 50;
    display: none;
}

.search-result {
    padding: 12px;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
}

.search-result:hover {
    background: var(--bg-elev);
}

.search-result:last-child {
    border-bottom: none;
}

.search-result-name {
    font-weight: 600;
    margin-bottom: 4px;
}

.search-result-desc {
    color: var(--muted);
    font-size: 12px;
}

/* --- Footer --- */
footer { 
    border-top: 1px solid var(--border); 
    padding: 28px 24px; 
    color: var(--muted); 
    font-size: 13px; 
    background: var(--bg-elev);
}
footer .row { 
    display: flex; flex-wrap: wrap; gap: 16px; 
    justify-content: space-between; align-items: center; 
}
footer a { color: var(--muted); }
footer a:hover { color: var(--text); }

/* --- Tool Page Styles --- */
.tool-header {
    padding: 24px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-elev);
}

.tool-header h1 {
    font-size: 28px;
    margin: 0 0 8px 0;
    display: flex;
    align-items: center;
    gap: 12px;
}

.tool-header .ic {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    border: 1px solid var(--border);
    display: grid;
    place-items: center;
    background: var(--bg);
}

.tool-content {
    padding: 24px;
}

.tool-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 24px;
    margin-bottom: 24px;
}

/* Form elements */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text);
}

.form-input, .form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    font-family: inherit;
}

.form-input:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--ring);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--ring), transparent 80%);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.btn {
    padding: 12px 24px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--text);
    color: var(--bg);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg);
    color: var(--text);
}

.btn-secondary:hover {
    background: var(--bg-elev);
}

/* Reduce motion friendly */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { 
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .card, .card:hover { 
        transition: none; 
        transform: none; 
        box-shadow: none; 
    }
}