/* ================================================================
   SensoRAG — Aerospace / Racing UI
   Palette: steel-blue-gray bg · black · yellow · off-white panels
================================================================ */

:root {
    --bg:         #B9CBD3;
    --panel:      #CDDAE0;
    --yellow:     #FFE500;
    --black:      #0B0B0B;
    --white:      #EEF3F5;
    --muted:      #5B6D76;
    --border:     1px solid #0B0B0B;
    --ff-display: 'Barlow Condensed', sans-serif;
    --ff-body:    'Space Grotesk', system-ui, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: var(--ff-body);
    background: var(--bg);
    color: var(--black);
    padding: 1.5rem;
    min-height: 100vh;
}

/* ---- PAGE LAYOUT ---- */
.page-wrap {
    max-width: 940px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

/* ================================================================
   HEADER
================================================================ */
.site-header {
    background: var(--white);
    border: var(--border);
    position: relative;
}

.hdr-inner {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding: 1.25rem 1.5rem 1.1rem;
    gap: 1.5rem;
}

.hdr-eyebrow {
    font-family: var(--ff-display);
    font-size: 0.62rem;
    letter-spacing: 0.22em;
    color: var(--muted);
    margin-bottom: 0.2rem;
}

.hdr-title {
    font-family: var(--ff-display);
    font-size: clamp(2.8rem, 7vw, 5rem);
    font-weight: 800;
    line-height: 0.92;
    text-transform: uppercase;
    letter-spacing: -0.02em;
}
.hdr-title em {
    font-style: normal;
    font-weight: 400;
    color: var(--muted);
}

.hdr-sub {
    font-family: var(--ff-display);
    font-size: 0.6rem;
    letter-spacing: 0.18em;
    color: var(--muted);
    margin-top: 0.4rem;
}

.hdr-right {
    display: flex;
    align-items: flex-end;
    gap: 1.75rem;
    flex-shrink: 0;
}

.hdr-stat {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.05rem;
}
.stat-label {
    font-family: var(--ff-display);
    font-size: 0.55rem;
    letter-spacing: 0.2em;
    color: var(--muted);
}
.stat-val {
    font-family: var(--ff-display);
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.06em;
}

.hdr-yellow-bar {
    height: 7px;
    background: var(--yellow);
}

/* ================================================================
   API KEY BUTTON + POPOVER
================================================================ */
.api-btn {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    background: var(--black);
    border: none;
    color: var(--yellow);
    padding: 0.45rem 0.9rem;
    cursor: pointer;
    font-family: var(--ff-display);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    transition: opacity 0.15s;
}
.api-btn:hover { opacity: 0.78; }
.api-btn.has-key { background: var(--yellow); color: var(--black); }

.api-key-popover {
    position: absolute;
    right: 1.5rem;
    top: calc(100% + 2px);
    background: var(--white);
    border: var(--border);
    padding: 1rem 1.1rem;
    width: 320px;
    z-index: 200;
    box-shadow: 4px 4px 0 var(--black);
}
.api-key-popover.hidden { display: none; }

.hint {
    font-family: var(--ff-display);
    font-size: 0.6rem;
    letter-spacing: 0.18em;
    color: var(--muted);
    margin-bottom: 0.55rem;
}

.api-key-area { display: flex; gap: 0.4rem; align-items: center; }
.api-key-area input {
    flex: 1;
    padding: 0.5rem 0.65rem;
    border: var(--border);
    background: var(--bg);
    font-family: monospace;
    font-size: 0.85rem;
    color: var(--black);
    outline: none;
}
.api-key-area input:focus {
    outline: 2px solid var(--yellow);
    outline-offset: -1px;
}

/* ================================================================
   PANELS
================================================================ */
.panels {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.panel {
    background: var(--panel);
    border: var(--border);
}

.panel-bar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.42rem 1.25rem;
    background: var(--black);
}
.pbar-num {
    font-family: var(--ff-display);
    font-size: 0.7rem;
    font-weight: 800;
    color: var(--yellow);
    letter-spacing: 0.08em;
}
.pbar-name {
    font-family: var(--ff-display);
    font-size: 0.63rem;
    letter-spacing: 0.18em;
    color: #888;
    flex: 1;
}
.pbar-right {
    font-family: var(--ff-display);
    font-size: 0.55rem;
    letter-spacing: 0.15em;
    color: #666;
}

.panel-body { padding: 1.5rem; }

/* Hero row: large display title + dot-grid accent */
.panel-hero {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.25rem;
}

.panel-display {
    font-family: var(--ff-display);
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 800;
    line-height: 1;
    text-transform: uppercase;
    letter-spacing: -0.01em;
}

.dot-grid {
    width: 96px;
    height: 56px;
    background-image: radial-gradient(circle, var(--muted) 1.3px, transparent 1.3px);
    background-size: 9px 9px;
    opacity: 0.3;
    flex-shrink: 0;
    margin-top: 0.2rem;
}

/* ================================================================
   UPLOAD
================================================================ */
.upload-area {
    display: flex;
    gap: 0.5rem;
    align-items: stretch;
    flex-wrap: wrap;
    margin-bottom: 0.75rem;
}

.file-pick {
    flex: 1;
    min-width: 180px;
    cursor: pointer;
}
.file-pick input[type="file"] { display: none; }
.file-pick-label {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    min-height: 38px;
    padding: 0.5rem 0.9rem;
    border: var(--border);
    background: var(--white);
    font-family: var(--ff-display);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    color: var(--muted);
    cursor: pointer;
    transition: background 0.12s, color 0.12s;
}
.file-pick:hover .file-pick-label {
    background: var(--yellow);
    color: var(--black);
}

.samples-label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.65rem 0.9rem;
    border: var(--border);
    font-family: var(--font-condensed);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    cursor: pointer;
    white-space: nowrap;
    user-select: none;
}

/* ================================================================
   QUERY
================================================================ */
.query-area { display: flex; gap: 0.5rem; }
.query-area input[type="text"] {
    flex: 1;
    padding: 0.65rem 0.9rem;
    border: var(--border);
    background: var(--white);
    font-family: var(--ff-body);
    font-size: 0.9rem;
    color: var(--black);
    outline: none;
}
.query-area input[type="text"]:focus {
    outline: 2px solid var(--yellow);
    outline-offset: -1px;
}
.query-area input[type="text"]::placeholder {
    color: var(--muted);
    font-size: 0.83rem;
}

/* ================================================================
   BUTTONS
================================================================ */
.btn {
    padding: 0.6rem 1.35rem;
    border: var(--border);
    cursor: pointer;
    font-family: var(--ff-display);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    white-space: nowrap;
    transition: opacity 0.12s, background 0.12s;
}
.btn:disabled { opacity: 0.38; cursor: not-allowed; }

.btn-yellow { background: var(--yellow); color: var(--black); }
.btn-yellow:hover:not(:disabled) { opacity: 0.82; }

.btn-outline { background: transparent; color: var(--black); }
.btn-outline:hover:not(:disabled) { background: var(--white); }

.btn-small { padding: 0.4rem 0.75rem; font-size: 0.68rem; }

/* ================================================================
   STATUS + DOCUMENT TAGS
================================================================ */
#upload-status {
    font-family: var(--ff-display);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    min-height: 1.3em;
    margin-bottom: 0.35rem;
}
.success { color: #1a6b3a; }
.error   { color: #b52828; }

#document-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 0.5rem;
}
.doc-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    background: var(--white);
    border: var(--border);
    padding: 0.2rem 0.45rem 0.2rem 0.7rem;
    font-family: var(--ff-display);
    font-size: 0.68rem;
    letter-spacing: 0.07em;
    color: var(--black);
}
.doc-remove {
    background: none;
    border: none;
    color: var(--muted);
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    padding: 0;
    transition: color 0.12s;
}
.doc-remove:hover { color: #b52828; }

/* ================================================================
   RESULTS — LOADING / MESSAGE
================================================================ */
.results-loading {
    font-family: var(--ff-display);
    font-size: 0.72rem;
    letter-spacing: 0.22em;
    color: var(--muted);
    padding: 0.25rem 0 1.25rem;
    animation: blink 1.4s ease-in-out infinite;
}

.results-message {
    font-family: var(--ff-display);
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    padding: 0.25rem 0 1rem;
}

.muted-text { color: var(--muted); font-style: italic; }

@keyframes blink {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.2; }
}

/* ================================================================
   RESULTS — BEST MATCH CARD
================================================================ */
.result-card {
    background: var(--white);
    border: var(--border);
    border-top: 4px solid var(--yellow);
    margin-bottom: 0.75rem;
}

.result-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    padding: 0.8rem 1.2rem;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

.result-card-meta {
    display: flex;
    flex-direction: column;
    gap: 0.1rem;
    min-width: 0;
}

.result-label {
    font-family: var(--ff-display);
    font-size: 0.55rem;
    letter-spacing: 0.22em;
    color: var(--muted);
}

.result-filename {
    font-family: var(--ff-display);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    color: var(--black);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.result-score-badge {
    background: var(--yellow);
    border: var(--border);
    font-family: var(--ff-display);
    font-size: 0.9rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    padding: 0.28rem 0.7rem;
    white-space: nowrap;
    flex-shrink: 0;
}

.result-recommendation {
    padding: 1rem 1.2rem;
    font-size: 0.88rem;
    line-height: 1.75;
    color: var(--black);
}

/* ================================================================
   RESULTS — ASSUMPTIONS
================================================================ */
.assumptions-block {
    background: var(--white);
    border: var(--border);
    border-left: 4px solid var(--yellow);
    padding: 0.85rem 1.2rem;
    margin-bottom: 0.75rem;
}

.section-eyebrow {
    font-family: var(--ff-display);
    font-size: 0.55rem;
    letter-spacing: 0.22em;
    color: var(--muted);
    margin-bottom: 0.55rem;
}

.assumptions-block ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.assumptions-block li {
    font-size: 0.84rem;
    line-height: 1.55;
    padding-left: 1.1rem;
    position: relative;
}

.assumptions-block li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--muted);
    font-family: var(--ff-display);
}

/* ================================================================
   RESULTS — ALL MATCHES
================================================================ */
.matches-label {
    font-family: var(--ff-display);
    font-size: 0.55rem;
    letter-spacing: 0.22em;
    color: var(--muted);
    margin-bottom: 0.4rem;
}

/* ================================================================
   RESULTS TABLE
================================================================ */
table { width: 100%; border-collapse: collapse; border: var(--border); }

thead { background: var(--black); }
th {
    font-family: var(--ff-display);
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--yellow);
    padding: 0.5rem 0.9rem;
    text-align: left;
}

td {
    padding: 0.65rem 0.9rem;
    font-size: 0.84rem;
    color: var(--black);
    border-bottom: 1px solid rgba(0,0,0,0.1);
    vertical-align: top;
}
tr:nth-child(even) td { background: rgba(255,255,255,0.32); }
tr:last-child td { border-bottom: none; }

/* ================================================================
   FOOTER
================================================================ */
.site-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-top: var(--border);
    font-family: var(--ff-display);
    font-size: 0.58rem;
    letter-spacing: 0.16em;
    color: var(--muted);
}

/* ================================================================
   UTILS
================================================================ */
.loading { opacity: 0.5; pointer-events: none; }
.hidden  { display: none; }