/* =================================================================
   explorer/style.css
   -----------------------------------------------------------------
   Deliberately NOT the game's visual identity (no neon/cosmic dark
   theme, no game fonts): a plain, light "reference/documentation"
   look, since this page's job is reading dense data comfortably, not
   playing a game. Only the interaction LOGIC is shared with the game
   (see app.js) — the graphics are original to this explorer.
   ================================================================= */

:root {
    --bg: #f7f7fb;
    --surface: #ffffff;
    --border: #e2e2ee;
    --text: #1f2333;
    --text-muted: #676b80;
    --accent: #4338ca;
    --accent-soft: #eef0ff;
    --accent-hover: #362da3;
    --radius: 10px;
    --shadow: 0 1px 3px rgba(30, 30, 60, 0.08), 0 1px 2px rgba(30, 30, 60, 0.06);
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.5;
}

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

.page-header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 2.2rem 1.5rem 1.8rem 1.5rem;
}
.page-header-inner {
    max-width: 760px;
    margin: 0 auto;
}
.page-header h1 {
    margin: 0 0 0.5rem 0;
    font-size: 1.6rem;
    letter-spacing: -0.01em;
}
.page-header .subtitle {
    margin: 0 0 0.9rem 0;
    color: var(--text-muted);
    font-size: 0.98rem;
}
.repo-link {
    display: inline-block;
    font-size: 0.9rem;
    font-weight: 600;
}

.page-main {
    max-width: 760px;
    margin: 0 auto;
    padding: 1.5rem 1.5rem 3rem 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
}

.panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 1.2rem;
}
.panel-heading {
    margin: 0 0 0.9rem 0;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
}

/* Language + category selector */
.lang-selector-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.6rem;
}
.lang-card { cursor: pointer; }
.lang-card input { display: none; }
.lang-card-content {
    background: var(--bg);
    border: 1.5px solid var(--border);
    border-radius: 8px;
    padding: 0.6rem;
    text-align: center;
    font-weight: 600;
    font-size: 0.92rem;
    transition: border-color 0.15s ease, background 0.15s ease;
}
.lang-card input:checked + .lang-card-content {
    border-color: var(--accent);
    background: var(--accent-soft);
    color: var(--accent);
}

.category-panel {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease, margin 0.3s ease;
}
.category-panel.visible {
    max-height: 220px;
    opacity: 1;
    margin-top: 0.9rem;
}
.category-title {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}
.categories-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem 1rem;
}
.categories-grid label {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    font-size: 0.92rem;
    cursor: pointer;
}
.categories-grid input[type="checkbox"] {
    width: 15px;
    height: 15px;
    accent-color: var(--accent);
    cursor: pointer;
}

/* Search */
.search-panel {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.5rem 0.9rem;
}
.search-icon { font-size: 1.1rem; opacity: 0.6; }
#search-input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-size: 1.05rem;
    padding: 0.6rem 0;
    color: var(--text);
    text-transform: uppercase;
}
#search-input::placeholder { color: var(--text-muted); text-transform: none; }

/* Results */
.results-panel {
    padding: 0;
    display: flex;
    flex-direction: column;
    height: clamp(340px, 58vh, 620px);
    overflow: hidden;
}
.results-header, .result-row {
    display: grid;
    grid-template-columns: 2fr 1.3fr;
    align-items: center;
}
.results-header {
    flex-shrink: 0;
    padding: 0.75rem 1.1rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    background: var(--bg);
}
.results-body {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 0.3rem 0;
}
.results-placeholder {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 1.5rem;
    color: var(--text-muted);
    font-size: 0.95rem;
}
.result-row {
    height: 46px;
    max-height: 46px;
    padding: 0 1.1rem;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
    transition: max-height 0.25s ease, opacity 0.25s ease, transform 0.25s ease, padding 0.25s ease;
}
.row-word { font-weight: 600; font-size: 0.98rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row-category { font-size: 0.85rem; color: var(--text-muted); white-space: nowrap; }

.result-row.row-enter { max-height: 0; opacity: 0; padding-top: 0; padding-bottom: 0; transform: translateY(10px); }
.result-row.row-exit { max-height: 0 !important; opacity: 0; padding-top: 0; padding-bottom: 0; transform: translateY(-8px); border-bottom-color: transparent; }

.results-footer {
    flex-shrink: 0;
    padding: 0.55rem 1.1rem;
    font-size: 0.78rem;
    text-align: center;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
}
.results-footer:empty { display: none; }

.page-footer {
    max-width: 760px;
    margin: 0 auto;
    padding: 0 1.5rem 2.5rem 1.5rem;
    font-size: 0.82rem;
    color: var(--text-muted);
    text-align: center;
}

@media (max-width: 640px) {
    .lang-selector-grid { grid-template-columns: repeat(2, 1fr); }
    .categories-grid { grid-template-columns: 1fr; }
    .results-header, .result-row { grid-template-columns: 1.5fr 1fr; }
}