/* Interview Search — slick light-mode UI.
 * No framework — small hand-rolled CSS using system fonts. */

:root {
    color-scheme: light;
    --bg: #fbfbfd;
    --surface: #ffffff;
    --surface-2: #f5f6f8;
    --border: #e5e7eb;
    --text: #111827;
    --text-soft: #4b5563;
    --text-muted: #6b7280;
    --primary: #2563eb;
    --primary-soft: #dbeafe;
    --accent: #f59e0b;
    --highlight: #fff3a3;
    --shadow: 0 1px 2px rgba(15, 23, 42, 0.04), 0 4px 16px rgba(15, 23, 42, 0.06);
    --radius: 12px;
}

* { box-sizing: border-box; }
html, body { background: var(--bg); color: var(--text); }
body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

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

.container { max-width: 1080px; margin: 0 auto; padding: 24px; }
.container-wide { max-width: 1280px; margin: 0 auto; padding: 24px; }

/* --- Top bar --- */
.topbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
    backdrop-filter: saturate(180%) blur(8px);
}
.topbar-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    gap: 16px;
    align-items: center;
}
.brand { font-weight: 600; letter-spacing: -0.01em; }
.brand a { color: var(--text); }
.topbar nav { margin-left: auto; display: flex; gap: 18px; align-items: center; }
.topbar nav a { color: var(--text-soft); }
.topbar nav a:hover { color: var(--text); text-decoration: none; }

/* --- Search bar --- */
.search-hero {
    text-align: center;
    padding: 56px 0 24px;
}
.search-hero h1 {
    font-size: clamp(1.7rem, 3vw, 2.4rem);
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}
.search-hero p { color: var(--text-muted); margin-top: 0; }

.search-form {
    display: flex;
    gap: 8px;
    max-width: 720px;
    margin: 24px auto 0;
}
.search-form input[type="search"] {
    flex: 1;
    padding: 12px 16px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    font-size: 1rem;
    background: var(--surface);
    box-shadow: var(--shadow);
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.search-form input[type="search"]:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-soft);
}
.btn {
    padding: 12px 20px;
    border-radius: var(--radius);
    border: 1px solid transparent;
    background: var(--primary);
    color: white;
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
}
.btn:hover { filter: brightness(0.97); }
.btn-ghost {
    background: var(--surface);
    color: var(--text);
    border-color: var(--border);
}

/* --- Result cards --- */
.results { display: grid; gap: 16px; margin-top: 24px; }
.result-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
    box-shadow: var(--shadow);
}
.result-card h2 { margin: 0 0 4px; font-size: 1.15rem; letter-spacing: -0.01em; }
.result-card h2 a { color: var(--text); }
.result-meta {
    color: var(--text-muted);
    font-size: 0.875rem;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 10px;
}
.result-meta .sep::before { content: "·"; padding: 0 4px; color: var(--border); }
.snippets { display: grid; gap: 8px; margin-top: 8px; }
.snippet {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 8px 12px;
    color: var(--text-soft);
    font-size: 0.95rem;
    display: block;
}
.snippet:hover { background: #eef2ff; text-decoration: none; }
.snippet em {
    background: var(--highlight);
    font-style: normal;
    padding: 0 2px;
    border-radius: 3px;
}

/* Tag chips */
.chips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 3px 10px;
    font-size: 0.78rem;
    color: var(--text-soft);
}

/* --- Viewer --- */
.viewer-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 28px;
    align-items: start;
}
.viewer-side {
    position: sticky;
    top: 80px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px 20px;
    box-shadow: var(--shadow);
}
.viewer-side h3 { margin: 0 0 10px; font-size: 0.95rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.04em; }
.viewer-side dl { display: grid; grid-template-columns: 1fr; gap: 6px; margin: 0; }
.viewer-side dt { color: var(--text-muted); font-size: 0.8rem; }
.viewer-side dd { margin: 0 0 8px; }

.viewer {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 36px;
    box-shadow: var(--shadow);
    font-size: 1.025rem;
    line-height: 1.7;
}
.viewer .ivp { margin: 0 0 14px; scroll-margin-top: 96px; }
.viewer .ivp.flash {
    background: var(--highlight);
    transition: background 1.6s ease-out;
}
.viewer mark { background: var(--highlight); padding: 0 2px; border-radius: 3px; }

/* --- Login --- */
.login-card {
    max-width: 380px;
    margin: 96px auto;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 28px;
}
.login-card h1 { margin: 0 0 18px; font-size: 1.4rem; letter-spacing: -0.01em; }
.login-card input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    margin-bottom: 12px;
}

/* --- Upload --- */
.dropzone {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    padding: 36px;
    text-align: center;
    transition: border-color 0.15s, background 0.15s;
}
.dropzone.dragover { border-color: var(--primary); background: var(--primary-soft); }
.dropzone input[type="file"] { display: block; margin: 12px auto; }

/* --- Misc --- */
.muted { color: var(--text-muted); }
.empty { text-align: center; color: var(--text-muted); padding: 48px 0; }
.kbd {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-bottom-width: 2px;
    border-radius: 6px;
    padding: 1px 6px;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.8rem;
}