src/styles.py

# src/styles.py
from __future__ import annotations
"""Minimal clinical styling helpers for Streamlit UI."""

from typing import Optional
try:
    import streamlit as st  # type: ignore
except Exception:
    st = None  # type: ignore

BASE_CSS = """
/* Compact spacing */
.block-container { padding-top: 1rem; padding-bottom: 1rem; }
/* Inputs: white background, light borders */
.stTextInput > div > div > input,
.stTextArea textarea, .stNumberInput input, .stSelectbox div[data-baseweb],
.stMultiSelect div[data-baseweb] {
    background: #fff !important;
    border: 1px solid #E5E7EB !important;
    border-radius: 6px !important;
}
/* Badges */
.badge {
    display: inline-block; padding: 0.15rem 0.5rem; border-radius: 9999px;
    font-size: 0.75rem; line-height: 1rem; border: 1px solid #E5E7EB;
    background: #F3F4F6; color: #111827;
}
.badge.accent {
    background: #EFF6FF; color: #1D4ED8; border-color: #BFDBFE;
}
"""

def inject_base_css(extra: Optional[str] = None) -> None:
    """Inject base CSS (no-op if Streamlit unavailable)."""
    if st is None:
        return
    css = BASE_CSS + ("\n" + extra if extra else "")
    st.markdown(f"<style>{css}</style>", unsafe_allow_html=True)