:root {
    --bg: #0f1714;
    --bg-elev: #17221d;
    --bg-soft: #1e2c26;
    --line: #2d4037;
    --text: #e8f0eb;
    --muted: #9bb0a4;
    --accent: #3dbe8c;
    --accent-2: #f0b35a;
    --danger: #e07a6a;
    --ok: #3dbe8c;
    --font-display: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
    --font-body: "Avenir Next", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; min-height: 100%; }
body {
    font-family: var(--font-body);
    color: var(--text);
    background:
        radial-gradient(1200px 600px at 10% -10%, rgba(61,190,140,.18), transparent 50%),
        radial-gradient(900px 500px at 100% 0%, rgba(240,179,90,.12), transparent 45%),
        linear-gradient(180deg, #101a16 0%, #0c1210 100%);
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.muted { color: var(--muted); }
.hidden { display: none !important; }

.app-shell {
    display: grid;
    grid-template-columns: 220px 1fr 320px;
    min-height: 100vh;
}

.nav-left, .query-panel {
    background: rgba(23, 34, 29, .92);
    border-right: 1px solid var(--line);
    padding: 1.25rem;
}
.query-panel { border-right: 0; border-left: 1px solid var(--line); }

.brand, .guest-brand {
    font-family: var(--font-display);
    font-size: 1.6rem;
    letter-spacing: .02em;
    margin-bottom: 1.5rem;
    color: var(--text);
}

.nav-left nav { display: flex; flex-direction: column; gap: .35rem; }
.nav-link {
    color: var(--text);
    padding: .55rem .7rem;
    border-radius: 8px;
}
.nav-link:hover { background: var(--bg-soft); text-decoration: none; }
.nav-footer { margin-top: 2rem; font-size: .9rem; }
.user-chip { color: var(--muted); margin-bottom: .5rem; }

.main-panel { padding: 1.5rem 2rem; overflow: auto; }
.page-head { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
h1, h2 {
    font-family: var(--font-display);
    font-weight: 600;
    margin: 0 0 .8rem;
}
h1 { font-size: 2rem; }
h2 { font-size: 1.25rem; margin-top: 1.5rem; }

.panel, .auth-card, .highlight {
    background: rgba(30, 44, 38, .85);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 1.25rem;
}
.highlight { border-color: rgba(61,190,140,.45); }

.list { list-style: none; padding: 0; margin: 0; }
.list li { border-bottom: 1px solid var(--line); padding: .85rem 0; }
.list a { color: inherit; display: block; }
.list a:hover { text-decoration: none; color: var(--accent); }

.btn, button, .chat-actions button {
    background: var(--accent);
    color: #062016;
    border: 0;
    border-radius: 10px;
    padding: .65rem 1rem;
    font-weight: 650;
    cursor: pointer;
}
.btn-link, button.btn-link {
    background: transparent;
    color: var(--muted);
    padding: .2rem .4rem;
}
.badge {
    display: inline-block;
    background: var(--bg-soft);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: .1rem .55rem;
    font-size: .8rem;
}

.stack-form { display: grid; gap: .8rem; max-width: 480px; }
.stack-form label, .auth-card label { display: grid; gap: .35rem; }
input, select, textarea {
    width: 100%;
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: .65rem .75rem;
    font: inherit;
}
.inline-form { display: flex; gap: .5rem; align-items: end; flex-wrap: wrap; }
.checkin-panel { margin-bottom: 1.5rem; }
.checkin-panel .inline-form { margin-top: .75rem; }
.checkin-panel select { min-width: 220px; }
.row-between { display: flex; justify-content: space-between; gap: 1rem; align-items: center; }

.guest-body { display: grid; place-items: center; min-height: 100vh; padding: 1rem; }
.guest-shell { width: min(420px, 100%); }
.auth-card h1 { margin-bottom: 1rem; }
.auth-card form { display: grid; gap: .8rem; }

.flash {
    padding: .75rem 1rem;
    border-radius: 10px;
    margin-bottom: 1rem;
}
.flash-success { background: rgba(61,190,140,.15); border: 1px solid rgba(61,190,140,.4); }
.flash-error { background: rgba(224,122,106,.15); border: 1px solid rgba(224,122,106,.4); }

.chat-log { display: grid; gap: .75rem; margin: 1rem 0; }
.bubble {
    padding: .85rem 1rem;
    border-radius: 12px;
    max-width: 80%;
    border: 1px solid var(--line);
    background: var(--bg-elev);
}
.bubble-user { margin-left: auto; background: rgba(61,190,140,.12); border-color: rgba(61,190,140,.35); }
.bubble-assistant { margin-right: auto; }
.bubble-meta { color: var(--muted); font-size: .75rem; margin-bottom: .25rem; }

.chat-form, .query-form { display: grid; gap: .6rem; }
.chat-actions { display: flex; flex-wrap: wrap; gap: .5rem; }
.disclaimer {
    background: rgba(240,179,90,.12);
    border: 1px solid rgba(240,179,90,.35);
    color: #f6dfb4;
    padding: .75rem 1rem;
    border-radius: 10px;
}

.interview-shell { max-width: 860px; margin: 0 auto; padding: 1.25rem; }
.interview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.query-chat { display: flex; flex-direction: column; height: calc(100vh - 2.5rem); }
.query-messages {
    flex: 1;
    overflow: auto;
    display: grid;
    gap: .75rem;
    margin: .75rem 0 1rem;
    align-content: start;
}
.query-msg { padding: .7rem .8rem; border-radius: 10px; background: var(--bg); border: 1px solid var(--line); }
.query-msg.user { border-color: rgba(61,190,140,.35); }
.query-sources { font-size: .75rem; color: var(--muted); margin-top: .4rem; }

@media (max-width: 980px) {
    .app-shell { grid-template-columns: 1fr; }
    .nav-left, .query-panel { border: 0; border-bottom: 1px solid var(--line); }
    .query-chat { height: auto; min-height: 320px; }
}