refactor: remove emojis from titles and buttons for a cleaner UI

views/theory.py

@@ -146,17 +146,17 @@ def render():
     with col_img:
         st.image("Shannon.png", width=200)
     with col_title:
-        st.markdown("# 📡 Shannon's Equation for Dummies")
+        st.markdown("# Shannon's Equation for Dummies")
         st.markdown(
             "Exploration of Claude Shannon's channel capacity theorem — "
             "the fundamental limit of digital communications."
         )
-        st.link_button("📖 Wiki: Claude Shannon", "https://en.wikipedia.org/wiki/Claude_Shannon")
+        st.link_button("Wiki: Claude Shannon", "https://en.wikipedia.org/wiki/Claude_Shannon")
 
     st.divider()
 
     # ── Input Parameters ──
-    st.markdown("### ⚙️ Input Parameters")
+    st.markdown("### Input Parameters")
 
     col_in1, col_in2 = st.columns(2)
     with col_in1:
@@ -177,15 +177,15 @@ def render():
         cnr_values = [float(v.strip()) for v in cnr_input.split(",")]
         cnr_nyq = combine_cnr(*cnr_values)
     except (ValueError, ZeroDivisionError):
-        st.error("❌ Invalid C/N values. Use comma-separated numbers (e.g., '12' or '12, 15').")
+        st.error("Invalid C/N values. Use comma-separated numbers (e.g., '12' or '12, 15').")
         return
 
     # ── Computed Results ──
     cnr_linear, br_inf, c_n0, br_bw = shannon_points(bw_input, cnr_nyq)
     br_unit = c_n0  # Spectral efficiency = 1
 
-    st.markdown("### 📊 Results")
-    st.info(THEORY_HELP["c_n0"], icon="ℹ️") if st.checkbox("Show C/N₀ explanation", value=False) else None
+    st.markdown("### Results")
+    st.info(THEORY_HELP["c_n0"], icon=":material/info:") if st.checkbox("Show C/N₀ explanation", value=False) else None
 
     m1, m2, m3, m4 = st.columns(4)
     m1.metric("C/N₀", f"{c_n0:.1f} MHz", help=THEORY_HELP["c_n0"])
@@ -202,7 +202,7 @@ def render():
     st.divider()
 
     # ── Sensitivity Analysis ──
-    st.markdown("### 🔬 Sensitivity Analysis")
+    st.markdown("### Sensitivity Analysis")
 
     col_s1, col_s2, col_s3 = st.columns(3)
     with col_s1:
@@ -229,12 +229,12 @@ def render():
     st.divider()
 
     # ── Graphs ──
-    st.markdown("### 📈 Interactive Graphs")
+    st.markdown("### Interactive Graphs")
 
     tab_bw, tab_pow, tab_map = st.tabs([
-        "📶 Bandwidth Sensitivity",
-        "⚡ Power Sensitivity",
-        "🗺️ BR Factor Map",
+        "Bandwidth Sensitivity",
+        "Power Sensitivity",
+        "BR Factor Map",
     ])
 
     with tab_bw:
@@ -256,14 +256,14 @@ def render():
         )
 
     # ── Help Section ──
-    with st.expander("📘 Background Information"):
+    with st.expander("Background Information"):
         help_topic = st.selectbox(
             "Choose a topic:",
             options=["shannon", "advanced", "help"],
             format_func=lambda x: {
-                "shannon": "🧠 Shannon's Equation",
-                "advanced": "🔧 Advanced (AWGN Model)",
-                "help": "❓ How to use this tool",
+                "shannon": "Shannon's Equation",
+                "advanced": "Advanced (AWGN Model)",
+                "help": "How to use this tool",
             }[x],
         )
         st.markdown(THEORY_HELP[help_topic])