feat(ui): responsive sidebar and full-width navigation cards

streamlit_app/app.py

@@ -8,6 +8,55 @@ from pathlib import Path
 
 st.set_page_config(page_title="NBA Analytics", page_icon="🏀", layout="wide")
 
+# Custom Responsive Sidebar & Navigation Styling
+st.markdown("""
+<style>
+    /* Sidebar Navigation Cards */
+    [data-testid="stSidebar"] [data-testid="stRadio"] > div {
+        gap: 0.35rem;
+    }
+    [data-testid="stSidebar"] [data-testid="stRadio"] label {
+        background-color: rgba(128, 128, 128, 0.06);
+        border: 1px solid rgba(128, 128, 128, 0.12);
+        border-radius: 8px;
+        padding: 0.6rem 0.85rem;
+        margin-bottom: 0.15rem;
+        cursor: pointer !important;
+        transition: all 0.15s ease-in-out;
+        width: 100%;
+        display: flex;
+        align-items: center;
+        user-select: none;
+    }
+    [data-testid="stSidebar"] [data-testid="stRadio"] label:hover {
+        background-color: rgba(128, 128, 128, 0.14);
+        border-color: rgba(255, 107, 0, 0.4);
+        transform: translateX(3px);
+    }
+    [data-testid="stSidebar"] [data-testid="stRadio"] label:has(input:checked),
+    [data-testid="stSidebar"] [data-testid="stRadio"] label[data-checked="true"] {
+        background: linear-gradient(90deg, rgba(255, 107, 0, 0.22), rgba(255, 107, 0, 0.06)) !important;
+        border-color: #ff6b00 !important;
+        font-weight: 600;
+        box-shadow: 0 0 10px rgba(255, 107, 0, 0.15);
+    }
+    /* Hide the default radio circle for cleaner button appearance */
+    [data-testid="stSidebar"] [data-testid="stRadio"] label input[type="radio"] {
+        accent-color: #ff6b00;
+    }
+    
+    /* Season Selectbox Hit Area & Styling */
+    [data-testid="stSidebar"] [data-testid="stSelectbox"] div[data-baseweb="select"] {
+        cursor: pointer !important;
+        border-radius: 8px;
+        min-height: 42px;
+    }
+    [data-testid="stSidebar"] [data-testid="stSelectbox"] div[data-baseweb="select"]:hover {
+        border-color: #ff6b00;
+    }
+</style>
+""", unsafe_allow_html=True)
+
 # ============================================================
 # CONNECTION & QUERY INFRASTRUCTURE
 # ============================================================
@@ -46,23 +95,47 @@ seasons = get_seasons()
 season_options = seasons["season_start_year"].tolist()
 season_labels = dict(zip(seasons["season_start_year"], seasons["season_display"]))
 
+PAGE_OPTIONS = [
+    "Overview",
+    "Teams",
+    "Player Lab",
+    "Shot Charts",
+    "Head to Head",
+    "Game Trends",
+    "Quarter Analysis",
+]
+
+PAGE_ICONS = {
+    "Overview": "📊 Overview",
+    "Teams": "🛡️ Teams",
+    "Player Lab": "🧪 Player Lab",
+    "Shot Charts": "🎯 Shot Charts",
+    "Head to Head": "⚔️ Head to Head",
+    "Game Trends": "📈 Game Trends",
+    "Quarter Analysis": "⏱️ Quarter Analysis",
+}
+
 if "season" not in st.session_state:
     st.session_state["season"] = season_options[0]
 
 st.sidebar.title("🏀 NBA Analytics")
 
-st.session_state["season"] = st.sidebar.selectbox(
+# Direct key binding eliminates dropped clicks and rerun desync
+st.sidebar.selectbox(
     "Season",
     season_options,
-    index=season_options.index(st.session_state["season"]),
-    format_func=lambda x: season_labels[x],
+    key="season",
+    format_func=lambda x: season_labels.get(x, str(x)),
 )
 
 st.sidebar.divider()
 
+# Full-width clickable navigation cards
 page = st.sidebar.radio(
     "Navigate",
-    ["Overview", "Teams", "Player Lab", "Shot Charts", "Head to Head", "Game Trends", "Quarter Analysis"],
+    PAGE_OPTIONS,
+    format_func=lambda x: PAGE_ICONS.get(x, x),
+    key="current_page",
 )
 
 # Convenience accessors