S2FApp/static/s2f_styles.css

/* === Accent variables (fixed teal; used by buttons, sidebar focus, etc.) === */
:root {
    --s2f-primary: #0d9488;
    --s2f-primary-dark: #0f766e;
    --s2f-primary-darker: #115e59;
    --s2f-primary-rgb: 13, 148, 136;
    /* Space for Streamlit’s fixed top toolbar (Deploy / menu). Set when header exists (see below). */
    --s2f-streamlit-header-offset: 0px;
    /* Sidebar grouped blocks: faint surface, no heavy chrome */
    --s2f-sidebar-panel-bg: rgba(255, 255, 255, 0.42);
    --s2f-sidebar-panel-border: rgba(203, 213, 225, 0.34);
    /* Match Streamlit’s sidebar horizontal padding so panels can full-bleed the track */
    --s2f-sidebar-inline-inset: 1rem;
    --s2f-sidebar-width: 360px;
}
/* Streamlit renders a fixed header; without this offset, the sidebar and first main block sit underneath it. */
.stApp:has(header[data-testid="stHeader"]) {
    --s2f-streamlit-header-offset: 2rem;
}

/* === Typography === */
html, body, .stApp {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif !important;
}

/*
 * Scroll layout (local app + HF iframe):
 * - Lock document scroll so only one vertical scrollbar exists inside the app (avoids double scrollbars
 *   when the Space is embedded and the iframe has a fixed height).
 * - The main column is the scroll container; the sidebar stays fixed beside it while main content scrolls.
 * - Requires matching --s2f-streamlit-header-offset so fixed sidebar/top padding clear Streamlit’s toolbar.
 */
html, body {
    height: 100% !important;
    overflow: hidden !important;
    margin: 0 !important;
}
/* App shell: flex column, dot grid background */
.stApp {
    height: 100vh !important;
    max-height: 100dvh !important;
    overflow: hidden !important;
    display: flex !important;
    flex-direction: column !important;
    background-color: #fafbfc !important;
    background-image:
        radial-gradient(circle at 1px 1px, rgba(148, 163, 184, 0.12) 1px, transparent 0);
    background-size: 28px 28px !important;
    background-position: 0 0, 0 0 !important;
}
/* Flex row: sidebar + main */
.stApp > div {
    display: flex !important;
    flex: 1 !important;
    min-height: 0 !important;
    overflow: hidden !important;
}
/* Soft gradient overlay for depth */
.stApp::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse 80% 50% at 70% -20%, rgba(var(--s2f-primary-rgb), 0.06) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 0% 100%, rgba(var(--s2f-primary-rgb), 0.04) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}
/* Ensure content sits above background */
.stApp > div,
.block-container,
section[data-testid="stSidebar"] {
    position: relative;
    z-index: 1;
}

/* === Header banner === */
.s2f-header {
    background:
        /* Subtle grid overlay (drawn on top) */
        linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px),
        linear-gradient(135deg, var(--s2f-primary) 0%, var(--s2f-primary-dark) 40%, var(--s2f-primary-darker) 100%);
    background-size: 20px 20px, 20px 20px, 100% 100%;
    padding: 1.1rem 1.5rem 1rem;
    border-radius: 12px;
    margin-bottom: 0.5rem;
    color: white;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(var(--s2f-primary-rgb), 0.25);
}
.s2f-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -15%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
    border-radius: 50%;
}
.s2f-header::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: 10%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
    border-radius: 50%;
}
.s2f-header h1 {
    font-size: 1.85rem !important;
    font-weight: 700 !important;
    margin: 0 0 0.35rem !important;
    color: white !important;
    letter-spacing: -0.02em;
    position: relative;
    z-index: 1;
}
.s2f-header p {
    font-size: 0.95rem !important;
    color: rgba(255,255,255,0.85) !important;
    margin: 0 !important;
    font-weight: 400;
    position: relative;
    z-index: 1;
}

/* === Sidebar === */
section[data-testid="stSidebar"] {
    position: fixed !important;
    top: var(--s2f-streamlit-header-offset, 0px) !important;
    left: 0 !important;
    width: var(--s2f-sidebar-width) !important;
    height: calc(100dvh - var(--s2f-streamlit-header-offset, 0px)) !important;
    max-height: calc(100dvh - var(--s2f-streamlit-header-offset, 0px)) !important;
    overflow-x: hidden !important;
    overflow-y: auto !important;
    scrollbar-gutter: stable !important;
    background:
        linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%),
        /* Subtle vertical rhythm */
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 89px,
            rgba(203, 213, 225, 0.25) 89px,
            rgba(203, 213, 225, 0.25) 90px
        ) !important;
    border-right: 1px solid #e2e8f0 !important;
}
@media (max-width: 768px) {
    section[data-testid="stSidebar"] { width: 100% !important; max-width: 100% !important; }
    [data-testid="stAppViewContainer"],
    .appview-container .main {
        margin-left: 0 !important;
    }
}
section[data-testid="stSidebar"] [data-testid="stWidgetLabel"],
section[data-testid="stSidebar"] [data-testid="stWidgetLabel"] p {
    font-size: 0.9rem !important;
    font-weight: 500 !important;
    color: #334155 !important;
}
.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-bottom: 0.65rem;
    margin-bottom: 0.35rem;
}
.sidebar-brand .brand-text {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--s2f-primary-dark);
    letter-spacing: -0.01em;
}

/*
 * Sidebar panels (model+ckp, conditions, force scale): horizontal bands — faded fill
 * with top/bottom dividers; stretch edge-to-edge in the sidebar (bleed past content padding).
 */
section[data-testid="stSidebar"] .st-key-s2f_grp_model,
section[data-testid="stSidebar"] .st-key-s2f_grp_conditions,
section[data-testid="stSidebar"] .st-key-s2f_grp_force {
    box-sizing: border-box !important;
    margin-left: calc(-1 * var(--s2f-sidebar-inline-inset)) !important;
    margin-right: calc(-1 * var(--s2f-sidebar-inline-inset)) !important;
    margin-bottom: 0.45rem !important;
    width: calc(100% + 2 * var(--s2f-sidebar-inline-inset)) !important;
    max-width: none !important;
    padding: 0.58rem var(--s2f-sidebar-inline-inset) 0.62rem !important;
    border-radius: 0 !important;
    background: var(--s2f-sidebar-panel-bg) !important;
    border: none !important;
    border-top: 1px solid var(--s2f-sidebar-panel-border) !important;
    border-bottom: 1px solid var(--s2f-sidebar-panel-border) !important;
    box-shadow: none !important;
}
/* Inner layout flex — no inner frame */
section[data-testid="stSidebar"] .st-key-s2f_grp_model > div,
section[data-testid="stSidebar"] .st-key-s2f_grp_conditions > div,
section[data-testid="stSidebar"] .st-key-s2f_grp_force > div {
    border: none !important;
    box-shadow: none !important;
    background: transparent !important;
}

/* === Metric cards === */
[data-testid="stMetric"] {
    background: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 0.85rem 1rem !important;
    box-shadow: 0 1px 4px rgba(0,0,0,0.06);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}
[data-testid="stMetric"]:hover {
    box-shadow: 0 4px 14px rgba(0,0,0,0.1);
    transform: translateY(-1px);
}
[data-testid="stMetric"] label {
    font-size: 0.75rem !important;
    font-weight: 600 !important;
    color: #64748b !important;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
[data-testid="stMetric"] [data-testid="stMetricValue"] {
    font-size: 1.25rem !important;
    font-weight: 700 !important;
    color: var(--s2f-primary-dark) !important;
}

/* === Buttons === */
.stButton > button[kind="primary"], button[kind="primary"] {
    background: linear-gradient(135deg, var(--s2f-primary), var(--s2f-primary-dark)) !important;
    border: none !important;
    border-radius: 10px !important;
    font-weight: 600 !important;
    letter-spacing: 0.02em !important;
    box-shadow: 0 2px 10px rgba(var(--s2f-primary-rgb), 0.3) !important;
    transition: all 0.2s ease !important;
}
.stButton > button[kind="primary"]:hover, button[kind="primary"]:hover {
    background: linear-gradient(135deg, var(--s2f-primary-dark), var(--s2f-primary-darker)) !important;
    box-shadow: 0 4px 18px rgba(var(--s2f-primary-rgb), 0.4) !important;
    transform: translateY(-1px) !important;
}
.stButton > button:not([kind="primary"]) {
    border-radius: 10px !important;
    font-weight: 500 !important;
    border: 1px solid #cbd5e1 !important;
    transition: all 0.2s ease !important;
}
.stButton > button:not([kind="primary"]):hover {
    border-color: var(--s2f-primary) !important;
    color: var(--s2f-primary) !important;
    background: rgba(var(--s2f-primary-rgb), 0.04) !important;
}
[data-testid="stDownloadButton"] button {
    border-radius: 10px !important;
    font-weight: 500 !important;
    transition: all 0.2s ease !important;
}
[data-testid="stDownloadButton"] button:hover {
    border-color: var(--s2f-primary) !important;
    color: var(--s2f-primary) !important;
}

/* === Action buttons row (measure + downloads) === */
div[data-testid="stHorizontalBlock"]:has([data-testid="stDownloadButton"]):has([data-testid="stButton"]) {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    padding: 0.65rem 0.6rem !important;
    margin-top: 0.5rem;
    gap: 0.5rem !important;
}
div[data-testid="stHorizontalBlock"]:has([data-testid="stDownloadButton"]):has([data-testid="stButton"]) > div {
    flex: 1 1 0 !important; min-width: 0 !important;
}
div[data-testid="stHorizontalBlock"]:has([data-testid="stDownloadButton"]):has([data-testid="stButton"]) button {
    width: 100% !important;
    min-width: 0 !important;
    white-space: nowrap !important;
    border-radius: 10px !important;
    font-size: 0.82rem !important;
    font-weight: 600 !important;
    padding: 0.55rem 0.8rem !important;
    letter-spacing: 0.01em !important;
}
div[data-testid="stHorizontalBlock"]:has([data-testid="stDownloadButton"]):has([data-testid="stButton"]) > div:nth-child(1) button {
    background: linear-gradient(135deg, var(--s2f-primary), var(--s2f-primary-dark)) !important;
    color: white !important;
    border-color: transparent !important;
    box-shadow: 0 2px 8px rgba(var(--s2f-primary-rgb), 0.25) !important;
}
div[data-testid="stHorizontalBlock"]:has([data-testid="stDownloadButton"]):has([data-testid="stButton"]) > div:nth-child(1) button:hover {
    background: linear-gradient(135deg, var(--s2f-primary-dark), var(--s2f-primary-darker)) !important;
    box-shadow: 0 4px 14px rgba(var(--s2f-primary-rgb), 0.35) !important;
    transform: translateY(-1px) !important;
}
div[data-testid="stHorizontalBlock"]:has([data-testid="stDownloadButton"]):has([data-testid="stButton"]) [data-testid="stDownloadButton"] button {
    background: white !important;
    border: 1px solid #e2e8f0 !important;
    color: #334155 !important;
    box-shadow: 0 1px 2px rgba(0,0,0,0.04) !important;
}
div[data-testid="stHorizontalBlock"]:has([data-testid="stDownloadButton"]):has([data-testid="stButton"]) [data-testid="stDownloadButton"] button:hover {
    background: rgba(var(--s2f-primary-rgb), 0.06) !important;
    border-color: var(--s2f-primary) !important;
    color: var(--s2f-primary-dark) !important;
    box-shadow: 0 2px 6px rgba(var(--s2f-primary-rgb), 0.12) !important;
    transform: translateY(-1px) !important;
}

/* === Expanders === */
.stExpander {
    border: 1px solid #e2e8f0 !important;
    border-radius: 12px !important;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

/* === File uploader === */
[data-testid="stFileUploader"] section {
    border: 2px dashed #cbd5e1 !important;
    border-radius: 12px !important;
    transition: border-color 0.2s ease;
}
[data-testid="stFileUploader"] section:hover {
    border-color: var(--s2f-primary) !important;
}

/* === Result labels === */
.result-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.92rem;
    font-weight: 600;
    color: #334155;
    padding: 0.4rem 0;
}
.result-badge {
    font-size: 0.68rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 4px;
    letter-spacing: 0.06em;
}
.result-badge.input {
    background: #e2e8f0;
    color: #475569;
}
.result-badge.output {
    background: rgba(var(--s2f-primary-rgb), 0.15);
    color: var(--s2f-primary-dark);
}

/* === Run prediction info bar === */
.run-info {
    display: flex;
    align-items: center;
    gap: 10px;
    height: 42px;
    font-size: 0.85rem;
    color: #64748b;
}
.run-info-tag {
    background: rgba(var(--s2f-primary-rgb), 0.1);
    color: var(--s2f-primary-dark);
    font-weight: 600;
    font-size: 0.78rem;
    padding: 3px 10px;
    border-radius: 6px;
}
.run-info code {
    background: #f1f5f9;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    color: #475569;
}

/* === Messages === */
.stSuccess {
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%) !important;
    border-left: 4px solid #10b981 !important;
    border-radius: 8px !important;
}
.stWarning { border-radius: 8px !important; }
.stInfo { border-radius: 8px !important; }

/* === Selectbox, multiselect, toggle (accent on focus) === */
[data-testid="stSelectbox"] > div > div,
[data-testid="stSelectbox"] input,
[data-testid="stMultiSelect"] > div > div {
    color: #1e293b !important;
    background-color: #ffffff !important;
}
/* Multiselect input: transparent so it doesn't show as a white block before the tags */
[data-testid="stMultiSelect"] input {
    background-color: transparent !important;
    color: #1e293b !important;
    min-width: 2ch !important;
}
[data-testid="stSelectbox"] > div > div,
[data-testid="stMultiSelect"] > div > div {
    border-radius: 8px !important;
    border: 1px solid #cbd5e1 !important;
    transition: border-color 0.15s ease, box-shadow 0.15s ease !important;
}
section[data-testid="stSidebar"] [data-testid="stSelectbox"] > div > div:focus-within,
section[data-testid="stSidebar"] [data-testid="stMultiSelect"] > div > div:focus-within {
    border-color: var(--s2f-primary) !important;
    box-shadow: 0 0 0 1px rgba(var(--s2f-primary-rgb), 0.28) !important;
}
/* Radio: accent color */
[data-testid="stRadio"] input {
    accent-color: var(--s2f-primary);
}
/* Toggle: on state uses --s2f-primary */
[data-testid="stToggle"] [data-baseweb="toggleTrack"] {
    background-color: #cbd5e1 !important;
}
[data-testid="stToggle"] [data-baseweb="toggleTrack"][aria-checked="true"] {
    background-color: var(--s2f-primary) !important;
}
[data-testid="stToggle"] [data-baseweb="toggleTrack"][data-state="checked"] {
    background-color: var(--s2f-primary) !important;
}
[data-testid="stToggle"] [data-baseweb="toggleTrack"][data-state="unchecked"] {
    background-color: #cbd5e1 !important;
}
/* Newer Streamlit may render a switch button instead of Base Web track */
[data-testid="stToggle"] button[role="switch"][aria-checked="true"] {
    background-color: var(--s2f-primary) !important;
}
[data-testid="stToggle"] button[role="switch"][aria-checked="false"] {
    background-color: #cbd5e1 !important;
}
/* Dropdown options: ensure visible text on light background */
[role="listbox"] [role="option"],
[data-baseweb="menu"] li,
ul[role="listbox"] li {
    color: #1e293b !important;
    background-color: #ffffff !important;
}
/* Sidebar / form labels (colormap row, section titles) */
.s2f-form-label {
    font-size: 0.95rem;
    font-weight: 500;
    color: #334155;
    line-height: 1.2;
    margin: 0;
}
.s2f-form-label--colormap {
    padding-top: 0.4rem;
}
.s2f-form-label--section {
    margin-bottom: 0.5rem;
}

/* === Dataframe === */
[data-testid="stDataFrame"] {
    border-radius: 10px !important;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

/* === Batch colorbar (minimal, no box) === */
.colorbar-table-header {
    width: 100%;
    margin-bottom: 0.5rem;
    padding: 0;
    background: transparent;
    border: none;
    box-shadow: none;
}
.colorbar-ticks {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 5px;
    padding: 0 1px;
    font-size: 0.65rem;
    font-weight: 600;
    color: #64748b;
    letter-spacing: 0.03em;
}
.colorbar-ticks .cb-tick {
    font-variant-numeric: tabular-nums;
}
.colorbar-bar {
    width: 100%;
    height: 6px;
    background-size: 100% 100%;
    background-repeat: no-repeat;
    background-position: center;
    border-radius: 3px;
    box-shadow: inset 0 1px 1px rgba(0,0,0,0.05);
}
/* === Divider === */
hr { border-color: #cbd5e1 !important; opacity: 0.7; }

/* === Plotly chart === */
.stPlotlyChart { border-radius: 12px; overflow: hidden; }

/* === Footer citation === */
.footer-citation {
    position: fixed;
    bottom: 0;
    left: var(--s2f-sidebar-width);
    right: 0;
    z-index: 999;
    padding: 0.5rem 1rem 0.55rem;
    background: #f1f5f9;
    border-top: 1px solid #e2e8f0;
    font-size: 0.7rem;
    color: #64748b;
    text-align: center;
    line-height: 1.45;
}
/*
 * Main column: horizontal offset for fixed sidebar + vertical scroll only here.
 * Header offset is on stMain only (avoids doubling if container and .main both match).
 */
[data-testid="stAppViewContainer"],
.appview-container .main {
    margin-left: var(--s2f-sidebar-width) !important;
    flex: 1 !important;
    min-height: 0 !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    scrollbar-gutter: stable !important;
    -webkit-overflow-scrolling: touch !important;
    box-sizing: border-box !important;
}
/* Clear Streamlit’s fixed toolbar so the custom banner / first widgets aren’t clipped */
section[data-testid="stMain"] {
    padding-top: var(--s2f-streamlit-header-offset, 0px) !important;
    box-sizing: border-box !important;
}
.block-container {
    padding-top: 0.75rem !important;
    padding-bottom: 3.25rem !important;
    max-width: 1050px !important;
}
section[data-testid="stSidebar"] > div:first-child {
    padding-top: 0.85rem !important;
    padding-bottom: 0.5rem !important;
}

/* Measure tool: value panel (replaces inline styles in measure_tool.py) */
.s2f-measure-vals-heading {
    font-weight: 400;
    color: #334155;
    font-size: 0.95rem;
    margin: 0 20px 4px 4px;
}
.s2f-measure-vals-panel {
    width: 100%;
    box-sizing: border-box;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 10px 12px;
    margin: 0 10px 20px 10px;
    background: linear-gradient(145deg, #f8fafc 0%, #f1f5f9 100%);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}
.s2f-measure-vals-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    font-size: 0.9rem;
}

/* Dialog / expander: measure canvas layout */
[data-testid="stDialog"] [data-testid="stSelectbox"],
[data-testid="stExpander"] [data-testid="stSelectbox"],
[data-testid="stDialog"] [data-testid="stSelectbox"] > div,
[data-testid="stExpander"] [data-testid="stSelectbox"] > div {
    width: 100% !important;
    max-width: 100% !important;
}
[data-testid="stDialog"] [data-testid="stMetric"] label,
[data-testid="stDialog"] [data-testid="stMetric"] [data-testid="stMetricValue"],
[data-testid="stExpander"] [data-testid="stMetric"] label,
[data-testid="stExpander"] [data-testid="stMetric"] [data-testid="stMetricValue"] {
    font-size: 0.95rem !important;
}
[data-testid="stDialog"] img,
[data-testid="stExpander"] img {
    border-radius: 0 !important;
}

/* === Responsive === */
@media (max-width: 768px) {
    .s2f-header {
        padding: 1.5rem;
        border-radius: 12px;
    }
    .s2f-header h1 {
        font-size: 1.4rem !important;
    }
    .footer-citation {
        left: 0 !important;
        padding-left: 0.75rem !important;
        padding-right: 0.75rem !important;
    }
}