Update src/streamlit_app.py

src/streamlit_app.py

@@ -14,7 +14,42 @@ st.set_page_config(
 )
 
 # ---------------------------
-# Global CSS (mac-neon + rev gauge)
+# SESSION STATE INITIALIZATION (Fixes Yellow Warning)
+# ---------------------------
+def init_session_state():
+    # Only set these defaults if they don't exist yet
+    defaults = {
+        "engine_disp": 2.0,
+        "engine_layout": "I6",
+        "base_hp": 240,
+        "weight_kg": 1500,
+        "weight_reduction": 0,
+        "intake": "Stock",
+        "headers": "Stock",
+        "exhaust": "Stock",
+        "exhaust_dia": 60,
+        "cam": "Stock",
+        "intake_manifold": "Stock",
+        "induction": "None",
+        "boost_psi": 0,
+        "turbo_size": "N/A",
+        "intercooler": "None",
+        "meth": False,
+        "tune": "None",
+        "fuel": "93",
+        "altitude": 200,
+        "traction_mode": "Spirited"
+    }
+    
+    for key, value in defaults.items():
+        if key not in st.session_state:
+            st.session_state[key] = value
+
+# Run init immediately
+init_session_state()
+
+# ---------------------------
+# Global CSS (Fixes "Cutting Out" / Rounds)
 # ---------------------------
 st.markdown(
     """
@@ -28,17 +63,19 @@ st.markdown(
     [data-testid="stHeader"] { background: transparent; }
     [data-testid="stToolbar"] { display: none; }
 
+    /* Fix: Removed overflow:hidden to stop cutting off shadows */
     .hero {
         border-radius: 24px;
-        padding: 18px 22px;
+        padding: 24px 28px;
         background: radial-gradient(circle at top left, rgba(96,165,250,0.35), transparent 55%),
                     radial-gradient(circle at bottom right, rgba(236,72,153,0.35), transparent 55%),
                     rgba(15,23,42,0.94);
-        box-shadow: 0 25px 60px rgba(15,23,42,0.9);
+        box-shadow: 0 20px 50px rgba(0,0,0,0.5); 
         border: 1px solid rgba(148,163,184,0.35);
         position: relative;
-        overflow: hidden;
+        margin-bottom: 20px;
     }
+    
     .hero-title {
         font-size: 1.9rem;
         font-weight: 700;
@@ -70,13 +107,15 @@ st.markdown(
         100% { background-position: 0% 50%; }
     }
 
+    /* Fix: Removed overflow:hidden and added margin for shadow breathing room */
     .glass {
         background: radial-gradient(circle at top left, rgba(148,163,184,0.24), transparent 55%),
                     rgba(15,23,42,0.96);
-        border-radius: 18px;
-        padding: 18px 18px 14px 18px;
+        border-radius: 20px;
+        padding: 20px;
         border: 1px solid rgba(148,163,184,0.4);
-        box-shadow: 0 20px 40px rgba(15,23,42,0.6);
+        box-shadow: 0 15px 35px rgba(0,0,0,0.6);
+        margin: 5px; 
     }
 
     .chip {
@@ -100,7 +139,7 @@ st.markdown(
         color: #6b7280;
     }
 
-    /* Tabs */
+    /* Tabs styling */
     button[data-baseweb="tab"] {
         background: transparent !important;
         border-radius: 999px !important;
@@ -114,7 +153,7 @@ st.markdown(
         box-shadow: 0 0 0 1px rgba(59,130,246,0.7);
     }
 
-    /* Rev limiter gauge */
+    /* Rev limiter gauge - Only this keeps overflow hidden for the semi-circle */
     .rev-wrap {
         display:flex;
         justify-content:center;
@@ -130,7 +169,7 @@ st.markdown(
         background: radial-gradient(circle at 50% 120%, #991b1b, transparent 60%),
                     radial-gradient(circle at 0% 0%, rgba(59,130,246,0.4), transparent 60%),
                     #020617;
-        overflow:hidden;
+        overflow:hidden; 
         border:1px solid rgba(148,163,184,0.5);
         box-shadow: 0 12px 30px rgba(0,0,0,0.8);
     }
@@ -236,7 +275,7 @@ model = KNeighborsRegressor(n_neighbors=5, weights="distance")
 model.fit(X_scaled, y)
 
 # ---------------------------
-# PRESET CALLBACKS (use session_state)
+# PRESET CALLBACKS
 # ---------------------------
 def preset_daily():
     s = st.session_state
@@ -331,7 +370,7 @@ def preset_max():
     s.traction_mode = "Track / Drag"
 
 # ---------------------------
-# HERO
+# HERO SECTION
 # ---------------------------
 st.markdown(
     """
@@ -394,44 +433,47 @@ with left:
 
     tabs = st.tabs(["Core Specs", "Bolt-Ons", "Boost & Cooling", "ECU & Fuel"])
 
+    # NOTE: I removed 'index=...' from these selectboxes.
+    # They now just rely on the key being present in st.session_state (handled by init_session_state)
+    
     # --- Core specs ---
     with tabs[0]:
         col1, col2 = st.columns(2)
         engine_disp_options = [0.8,1.0,1.2,1.4,1.6,1.8,2.0,2.2,2.4,2.5,
                                2.8,3.0,3.2,3.5,4.0,4.4,5.0,6.0,7.0,8.0]
+        
+        # We manually update value if it's missing (failsafe), though init handles it.
+        if "engine_disp" not in st.session_state: st.session_state.engine_disp = 2.0
+        
         engine_disp = col1.selectbox(
             "Engine Displacement (L)",
             engine_disp_options,
-            index=engine_disp_options.index(2.0),
             key="engine_disp"
         )
         engine_layout = col2.selectbox(
             "Engine Layout",
             ["I3","I4","I6","V6","V8","V10","V12"],
-            index=2,
             key="engine_layout"
         )
 
         layout_to_cyl = {"I3":3,"I4":4,"I6":6,"V6":6,"V8":8,"V10":10,"V12":12}
         cyl = layout_to_cyl[engine_layout]
 
-        # FIX: Increased max_value to 3000 to prevent crash on high displacement/cylinder combinations
         base_hp = st.number_input(
             "Base Horsepower (stock dyno)",
             min_value=60, max_value=3000, 
-            value=int(max(90, round(engine_disp * cyl * 20))),
             key="base_hp"
         )
 
         col3, col4 = st.columns(2)
         weight_kg = col3.number_input(
             "Vehicle Weight (kg)",
-            min_value=700, max_value=4000, value=1500,
+            min_value=700, max_value=4000,
             key="weight_kg"
         )
         weight_reduction = col4.slider(
             "Weight Reduction (%)",
-            0, 40, 0,
+            0, 40,
             key="weight_reduction"
         )
 
@@ -441,7 +483,7 @@ with left:
         intake = col1.selectbox("Intake", ["Stock", "Cold Air", "Performance"], key="intake")
         headers = col2.selectbox("Headers", ["Stock", "Shorty", "Long Tube"], key="headers")
         exhaust = col3.selectbox("Exhaust", ["Stock", "Cat-back", "Straight Pipe"], key="exhaust")
-        exhaust_dia = st.slider("Exhaust Diameter (mm)", 40, 120, 60, key="exhaust_dia")
+        exhaust_dia = st.slider("Exhaust Diameter (mm)", 40, 120, key="exhaust_dia")
 
         cam = st.selectbox(
             "Cam Profile",
@@ -461,7 +503,7 @@ with left:
             ["None", "Turbo", "Twin-Turbo", "Supercharger", "Twincharged"],
             key="induction"
         )
-        boost_psi = st.slider("Target Boost (psi)", 0, 40, 10, key="boost_psi")
+        boost_psi = st.slider("Target Boost (psi)", 0, 40, key="boost_psi")
         turbo_size = st.selectbox(
             "Turbo Size",
             ["N/A", "Small 45-55mm", "Medium 56-65mm", "Big 66-75mm", "XL 76mm+"],
@@ -472,7 +514,7 @@ with left:
             ["None", "Air-to-Air", "Air-to-Water", "Front-mount High-Flow"],
             key="intercooler"
         )
-        meth = st.checkbox("Methanol Injection Kit", value=False, key="meth")
+        meth = st.checkbox("Methanol Injection Kit", key="meth")
 
     # --- ECU & fuel ---
     with tabs[3]:
@@ -486,7 +528,7 @@ with left:
             ["87", "91", "93", "E85 / Race Blend"],
             key="fuel"
         )
-        altitude = st.slider("Altitude (meters)", 0, 3500, 200, key="altitude")
+        altitude = st.slider("Altitude (meters)", 0, 3500, key="altitude")
         traction_mode = st.radio(
             "Traction Mode Vibe",
             ["Daily", "Spirited", "Track / Drag"],