@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

html, body, [class*="css"] {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.stApp {
    background-color: #f1f5f9;
}

.block-container {
    padding-top: 1.5rem;
    padding-bottom: 2rem;
    max-width: 1100px;
}

/* Extra breathing room above the first main row (CT scan / Analysis cards) */
section[data-testid="stMain"] .block-container {
    padding-top: 3.5rem;
}

/* Spacer block before the two-column layout — survives Streamlit inner margins */
section[data-testid="stMain"] [data-testid="stMarkdownContainer"]:has(.main-cards-top-gap) {
    margin-top: 0 !important;
    margin-bottom: 0 !important;
    padding-top: 0 !important;
    padding-bottom: 0 !important;
}

section[data-testid="stMain"] [data-testid="stMarkdownContainer"]:has(.main-cards-top-gap) > div {
    padding: 0 !important;
    margin: 0 !important;
}

.main-cards-top-gap {
    display: block;
    height: 2.25rem;
    width: 100%;
}

section[data-testid="stSidebar"] {
    background-color: #ffffff;
    border-right: 1px solid #e2e8f0;
}

section[data-testid="stSidebar"] .block-container {
    padding-top: 1.5rem;
}

.brand-block {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 1.5rem;
}

.brand-mark {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: linear-gradient(145deg, #0f2b46, #1a5f8a);
    color: #fff;
    font-weight: 700;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    letter-spacing: -0.02em;
}

.brand-title {
    font-size: 1rem;
    font-weight: 700;
    color: #0f172a;
    line-height: 1.2;
}

.brand-sub {
    font-size: 0.75rem;
    line-height: 1.45;
    color: #64748b;
    margin-top: 2px;
}

.info-card {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 1.25rem;
}

.info-card dt {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #64748b;
    margin: 0.75rem 0 0.15rem;
}

.info-card dt:first-child {
    margin-top: 0;
}

.info-card dd {
    margin: 0;
    font-size: 0.875rem;
    color: #0f172a;
    font-weight: 500;
}

.info-card .metrics-dd {
    margin-top: 0.1rem;
}

.info-card .metrics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.35rem 1rem;
    margin: 0;
    padding: 0;
}

.info-card .metrics-grid__cell {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 0.5rem;
    font-size: 0.875rem;
    line-height: 1.4;
}

.info-card .metrics-grid__label {
    color: #64748b;
    font-weight: 500;
}

.info-card .metrics-grid__value {
    color: #0f172a;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

.verdict-box {
    border-radius: 10px;
    padding: 1.25rem 1.5rem;
    margin-bottom: 1rem;
    text-align: center;
}

.verdict-box.stroke {
    background: #fef2f2;
    border: 1px solid #fecaca;
}

.verdict-box.normal {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
}

.verdict-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #64748b;
    margin-bottom: 0.35rem;
}

.verdict-value {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.verdict-box.stroke .verdict-value { color: #b91c1c; }
.verdict-box.normal .verdict-value { color: #15803d; }

.prob-chart {
    margin-top: 0.25rem;
}

.prob-row {
    margin-bottom: 0.85rem;
}

.prob-row:last-child {
    margin-bottom: 0;
}

.prob-row__label {
    margin: 0 0 0.4rem;
    font-size: 0.875rem;
    color: #334155;
}

.prob-row__label strong {
    font-weight: 600;
}

.prob-track {
    height: 10px;
    background: #e2e8f0;
    border-radius: 5px;
    overflow: hidden;
}

.prob-fill {
    height: 10px;
    border-radius: 5px;
    transition: width 0.25s ease;
}

.alert-box {
    border-radius: 8px;
    padding: 0.85rem 1rem;
    font-size: 0.85rem;
    line-height: 1.55;
    margin: 0.75rem 0.15rem 1rem;
}

.alert-box--muted {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    color: #475569;
}

.hint-box {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 0.7rem 0.9rem;
    margin: 0.35rem 0 1.25rem;
    font-size: 0.85rem;
    line-height: 1.45;
    color: #475569;
}

.hint-box--ready {
    background: #f0fdf4;
    border-color: #bbf7d0;
    color: #166534;
}

.hint-box--loading {
    background: #f8fafc;
    border-color: #e2e8f0;
}

.hint-box__icon {
    flex-shrink: 0;
    font-size: 1rem;
    line-height: 1.45;
}

.hint-box__sub {
    display: block;
    font-size: 0.78rem;
    color: #64748b;
    margin-top: 0.15rem;
    font-weight: 400;
}

.hint-box--ready .hint-box__sub {
    color: #15803d;
}

.hint-box strong {
    font-weight: 600;
}

.welcome-panel {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 1rem 1.2rem 1.4rem;
    margin: 0.85rem 0.15rem 1rem;
    font-size: 0.85rem;
    color: #475569;
    line-height: 1.5;
}

.welcome-panel__title {
    display: block;
    color: #0f2b46;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.welcome-panel__list {
    margin: 0;
    padding-left: 1.25rem;
}

.welcome-panel__list li {
    margin-bottom: 0.25rem;
    padding-left: 0.15rem;
}

.welcome-panel__list li:last-child {
    margin-bottom: 0;
}

.empty-state {
    color: #64748b;
    font-size: 0.875rem;
    line-height: 1.55;
    padding: 0.75rem 0.5rem 1.35rem;
    margin: 0;
    text-align: center;
}

div[data-testid="stVerticalBlockBorderWrapper"] {
    padding-bottom: 1.75rem;
}

div[data-testid="stVerticalBlockBorderWrapper"] [data-testid="stVerticalBlock"] {
    gap: 0.75rem;
}

.sidebar-disclaimer {
    background: #fffbeb;
    border: 1px solid #fde68a;
    border-radius: 8px;
    padding: 0.85rem 0.95rem;
    margin-top: 1.75rem;
    font-size: 0.75rem;
    line-height: 1.5;
    color: #92400e;
}

.sidebar-disclaimer__label {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: #b45309;
    margin: 0 0 0.4rem;
}

.sidebar-disclaimer p:last-child {
    margin: 0;
}

.footer-note {
    text-align: center;
    color: #94a3b8;
    font-size: 0.75rem;
    margin-top: 1.5rem;
    line-height: 1.6;
}

h2, h3 {
    color: #0f172a !important;
    font-weight: 600 !important;
}

section[data-testid="stSidebar"] .stButton > button {
    width: 100%;
    background: #ffffff;
    color: #1e4d6e;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.8rem;
    padding: 0.45rem 0.5rem;
    transition: background 0.15s ease, border-color 0.15s ease;
}

section[data-testid="stSidebar"] .stButton > button:hover {
    background: #f8fafc;
    border-color: #94a3b8;
    color: #0f2b46;
}

[data-testid="stFileUploader"] section {
    border: 1px dashed #cbd5e1;
    border-radius: 10px;
    background: #f8fafc;
}

[data-testid="stMetricValue"] {
    font-size: 1.75rem !important;
    color: #0f2b46 !important;
}