7 files changed, 1326 insertions, 4 deletions

diff --git a/CONTEXT.md b/CONTEXT.md
index 861fbf8..1c43b1f 100644
--- a/CONTEXT.md
+++ b/CONTEXT.md
@@ -99,6 +99,10 @@ Starts fully collapsed on first open. `Insert` toggles; `Up`/`Down` navigate;
 Bind rows enter bind-select mode: press a key/button to assign, `Escape` sets
 None (always-on), `Enter` cancels.
 
+> The text menu below is being replaced by the GUI described in the next
+> section. The old tree is kept only until the GUI reaches parity. The current
+> preview shell opens with F2; Insert still opens the text tree.
+
 ```
 HL2hake
   Bunnyhop
@@ -136,6 +140,30 @@ HL2hake
 
 Binds use SDL scancodes; mouse buttons are pseudo-scancodes 600..604.
 
+## GUI vocabulary / decisions
+
+- **GUI**: custom immediate-mode settings surface drawn through the existing
+  `ISurface` paint path. No Dear ImGui, no OpenGL hook, no new runtime
+  dependency.
+- **Category**: sidebar group. Movement, Combat, Visuals, Weapons, System.
+- **Card**: per-feature panel. Header always shows Active + Bind; body is a
+  collapsible set of settings.
+- **Freeze**: while the GUI is open, the usercmd movement/buttons/impulses/view
+  are held and combat features are skipped; the game keeps simulating and
+  ESP/FOV circle/speed graph keep drawing. No invulnerability.
+- **Native cursor**: on open, leave SDL relative-mouse mode and show the OS
+  cursor; restore on close. Absolute mouse coordinates are used.
+- **Bind capture**: click Bind, press a key/button; Esc or clicking elsewhere
+  cancels; Clear sets None; Insert is reserved for the GUI.
+- **UI scale**: `clamp(min(screen_w/1920, screen_h/1080), 0.75, 1.5)`; base
+  window 960x620, body/title fonts 15/20 px at scale 1.
+- Every feature gets Active + Bind; bind None means always-on.
+- System page: config path/build info, Reload config, and a two-click Reset
+  that restores feature settings/binds but keeps GUI layout.
+- Window: fixed-size, draggable by title bar, clamped to screen, position,
+  category and expanded cards persisted under `[gui]`.
+
+
 ## Bones / ESP
 
 - `SetupBones(BONE_USED_BY_ANYTHING)` with engine `Time()`; studio header via
diff --git a/build.sh b/build.sh
index 69dad99..b72bd2f 100755
--- a/build.sh
+++ b/build.sh
@@ -3,6 +3,6 @@ set -e
 cd "$(dirname "$0")"
 g++ -m32 -O2 -std=c++17 -Wall -Wextra -Werror -fPIC -shared -fvisibility=hidden -fno-omit-frame-pointer \
     -o libhl2hake.so \
-    src/hl2h.cpp src/modules.cpp src/cinput.cpp src/netvars.cpp src/menu.cpp src/esp.cpp src/server.cpp src/bones.cpp src/vischeck.cpp \
+    src/hl2h.cpp src/modules.cpp src/cinput.cpp src/netvars.cpp src/menu.cpp src/gui.cpp src/esp.cpp src/server.cpp src/bones.cpp src/vischeck.cpp \
     -ldl
 file libhl2hake.so
diff --git a/docs/adr/0001-custom-isurface-gui.md b/docs/adr/0001-custom-isurface-gui.md
new file mode 100644
index 0000000..9da3c0c
--- /dev/null
+++ b/docs/adr/0001-custom-isurface-gui.md
@@ -0,0 +1,58 @@
+# 0001 — Custom immediate-mode GUI on ISurface
+
+- Status: Accepted
+- Date: 2026-10-27
+
+## Context
+
+The text-only menu is becoming cumbersome as features accumulate. The cheat
+already has a proven overlay draw path through `ISurface` (`PaintTraverseEx`),
+native text with the bundled Liberation Sans font, text metrics, filled/outlined
+rects, lines and textured polygons. The game runs Source on Linux with a
+32-bit process; the cheat is a single `LD_PRELOAD` shared object.
+
+The main alternatives were:
+
+1. Dear ImGui with its standard OpenGL renderer, hooked into the game's
+   swap/present path.
+2. Dear ImGui rendered through `ISurface`.
+3. A custom immediate-mode GUI on `ISurface`.
+4. Keep the text menu and add categories/pages.
+
+`ISurface::Vertex_t` only carries position and UV, not per-vertex color, so a
+standard ImGui draw-list renderer would lose per-widget text colors unless
+draws were split or text was rendered through a separate path. An OpenGL ImGui
+backend would require locating and hooking the swap path, saving/restoring GL
+state, uploading the font atlas, and integrating SDL input events — an
+unverified risk in this build. The existing ISurface path already draws in-game
+and in menus without a new graphics context.
+
+## Decision
+
+Build a custom immediate-mode GUI directly on the existing `ISurface` draw
+path.
+
+- Fixed dark theme with automatic scale:
+  `clamp(min(screen_w/1920, screen_h/1080), 0.75, 1.5)`.
+- Base window 960x620, body/title fonts 15/20 px at scale 1.
+- Left sidebar categories (Movement, Combat, Visuals, Weapons, System) and a
+  content pane of feature cards with collapsible settings.
+- Native OS cursor by releasing SDL relative-mouse mode while the GUI is open.
+- While open, freeze usercmd input/view and skip combat features; keep the
+  game simulating and keep ESP/FOV circle/speed graph drawing.
+- Replace the text menu with the GUI. No permanent fallback menu; git history
+  retains the old implementation.
+
+## Consequences
+
+- We own the widget set (scrollbar, sliders, toggles, keybind capture, tooltips)
+  and the layout/clipping code. Text clipping and wheel events need explicit
+  handling because ISurface has no clip-rect API and SDL does not expose wheel
+  state by polling.
+- No new runtime dependency or GL context management.
+- The GUI remains inside the engine's VGUI paint path, so it inherits the
+  existing font registration and in-game overlay behavior.
+- The old text menu is removed once the GUI reaches feature parity. During
+  development the GUI is built alongside the text menu and opened with a
+  temporary F2 key; the replacement is complete only when the old tree is
+  deleted.
diff --git a/src/gui.cpp b/src/gui.cpp
new file mode 100644
index 0000000..74dd537
--- /dev/null
+++ b/src/gui.cpp
@@ -0,0 +1,1199 @@
+// gui.cpp — custom immediate-mode GUI shell (temporary F2 preview)
+//
+// This is the first vertical slice: the visual shell, categories, cards,
+// dummy controls, cursor handling and input freeze. It does not read or write
+// the real feature settings yet; the next pass replaces the dummy state and
+// removes the text menu.
+
+#include "hl2h.h"
+
+#include <atomic>
+#include <cmath>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <cwchar>
+#include <dlfcn.h>
+#include <time.h>
+
+// ---------------------------------------------------------------------------
+// ISurface drawing (same binary slots as menu.cpp / esp.cpp)
+// ---------------------------------------------------------------------------
+
+enum {
+  GS_DrawSetColor = 10,
+  GS_DrawFilledRect = 12,
+  GS_DrawOutlinedRect = 14,
+  GS_DrawLine = 15,
+  GS_DrawSetTextFont = 17,
+  GS_DrawSetTextColor = 18,
+  GS_DrawSetTextPos = 20,
+  GS_DrawPrintText = 22,
+  GS_GetScreenSize = 38,
+  GS_CreateFont = 66,
+  GS_AddGlyphSet = 67
+};
+
+static unsigned long g_font_body = 0;
+static unsigned long g_font_title = 0;
+static int g_body_h = 15;
+static int g_title_h = 20;
+static float g_font_scale = 0.0f;
+static int g_scr_w = 0, g_scr_h = 0;
+
+static void s_color(int r, int g, int b, int a) {
+  using Fn = void (*)(void *, int, int, int, int);
+  vfunc<Fn>(g_surface, GS_DrawSetColor)(g_surface, r, g, b, a);
+}
+static void s_fill(int x0, int y0, int x1, int y1) {
+  using Fn = void (*)(void *, int, int, int, int);
+  vfunc<Fn>(g_surface, GS_DrawFilledRect)(g_surface, x0, y0, x1, y1);
+}
+static void s_outline(int x0, int y0, int x1, int y1) {
+  using Fn = void (*)(void *, int, int, int, int);
+  vfunc<Fn>(g_surface, GS_DrawOutlinedRect)(g_surface, x0, y0, x1, y1);
+}
+static void s_line(int x0, int y0, int x1, int y1) {
+  using Fn = void (*)(void *, int, int, int, int);
+  vfunc<Fn>(g_surface, GS_DrawLine)(g_surface, x0, y0, x1, y1);
+}
+static void s_text_font(unsigned long f) {
+  using Fn = void (*)(void *, unsigned long);
+  vfunc<Fn>(g_surface, GS_DrawSetTextFont)(g_surface, f);
+}
+static void s_text_color(int r, int g, int b, int a) {
+  using Fn = void (*)(void *, int, int, int, int);
+  vfunc<Fn>(g_surface, GS_DrawSetTextColor)(g_surface, r, g, b, a);
+}
+static void s_text_pos(int x, int y) {
+  using Fn = void (*)(void *, int, int);
+  vfunc<Fn>(g_surface, GS_DrawSetTextPos)(g_surface, x, y);
+}
+static void s_print(const wchar_t *text, int n) {
+  using Fn = void (*)(void *, const wchar_t *, int, int);
+  vfunc<Fn>(g_surface, GS_DrawPrintText)(g_surface, text, n, 0);
+}
+static unsigned long s_create_font() {
+  using Fn = unsigned long (*)(void *);
+  return vfunc<Fn>(g_surface, GS_CreateFont)(g_surface);
+}
+static bool s_set_font(unsigned long font, const char *name, int tall, int weight,
+                       int flags, int lo, int hi) {
+  using Fn = bool (*)(void *, unsigned long, const char *, int, int, int, int,
+                      int, int, int);
+  return vfunc<Fn>(g_surface, GS_AddGlyphSet)(g_surface, font, name, tall,
+                                              weight, 0, 0, flags, lo, hi);
+}
+static void s_screen(int &w, int &h) {
+  using Fn = void (*)(void *, int &, int &);
+  vfunc<Fn>(g_surface, GS_GetScreenSize)(g_surface, w, h);
+}
+
+// ---------------------------------------------------------------------------
+// SDL polling
+// ---------------------------------------------------------------------------
+
+using GetKeysFn = const unsigned char *(*)(int *);
+using GetMouseFn = unsigned int (*)(int *, int *);
+using ShowCursorFn = int (*)(int);
+using SetRelativeFn = int (*)(int);
+using GetRelativeFn = int (*)(void);
+using AddWatchFn = int (*)(int (*)(void *, void *), void *);
+using GetTicksFn = unsigned int (*)(void);
+
+static GetKeysFn sd_get_keys = nullptr;
+static GetMouseFn sd_get_mouse = nullptr;
+static ShowCursorFn sd_show_cursor = nullptr;
+static SetRelativeFn sd_set_relative = nullptr;
+static GetRelativeFn sd_get_relative = nullptr;
+static AddWatchFn sd_add_watch = nullptr;
+static GetTicksFn sd_get_ticks = nullptr;
+static bool g_sdl_ready = false;
+static bool g_sdl_init_tried = false;
+
+static std::atomic<int> g_wheel{0};
+static int sdl_event_watch(void *, void *event) {
+  if (!event)
+    return 0;
+  const unsigned char *p = (const unsigned char *)event;
+  unsigned int type = *(const unsigned int *)p;
+  if (type == 0x403) { // SDL_MOUSEWHEEL
+    int y = *(const int *)(p + 20);
+    g_wheel.fetch_add(y);
+  }
+  return 0;
+}
+
+static void gui_init_sdl() {
+  if (g_sdl_init_tried)
+    return;
+  g_sdl_init_tried = true;
+  sd_get_keys = (GetKeysFn)dlsym(RTLD_DEFAULT, "SDL_GetKeyboardState");
+  sd_get_mouse = (GetMouseFn)dlsym(RTLD_DEFAULT, "SDL_GetMouseState");
+  sd_show_cursor = (ShowCursorFn)dlsym(RTLD_DEFAULT, "SDL_ShowCursor");
+  sd_set_relative = (SetRelativeFn)dlsym(RTLD_DEFAULT, "SDL_SetRelativeMouseMode");
+  sd_get_relative = (GetRelativeFn)dlsym(RTLD_DEFAULT, "SDL_GetRelativeMouseMode");
+  sd_add_watch = (AddWatchFn)dlsym(RTLD_DEFAULT, "SDL_AddEventWatch");
+  sd_get_ticks = (GetTicksFn)dlsym(RTLD_DEFAULT, "SDL_GetTicks");
+  g_sdl_ready = sd_get_keys && sd_get_mouse;
+  if (!g_sdl_ready) {
+    logf("gui: SDL polling unavailable");
+    return;
+  }
+  if (sd_add_watch)
+    sd_add_watch(&sdl_event_watch, nullptr);
+}
+
+// ---------------------------------------------------------------------------
+// Layout data (dummy shell)
+// ---------------------------------------------------------------------------
+
+struct Rect {
+  int x, y, w, h;
+  bool has(int px, int py) const {
+    return px >= x && py >= y && px < x + w && py < y + h;
+  }
+};
+struct Col {
+  int r, g, b, a;
+};
+static const Col C_BG{17, 19, 23, 248};
+static const Col C_PANEL{27, 30, 36, 248};
+static const Col C_SIDEBAR{21, 23, 28, 248};
+static const Col C_HEADER{36, 40, 48, 255};
+static const Col C_BORDER{70, 76, 88, 255};
+static const Col C_TEXT{229, 232, 238, 255};
+static const Col C_DIM{150, 156, 168, 255};
+static const Col C_ACCENT{255, 145, 64, 255};
+static const Col C_ACCENT_DIM{120, 70, 32, 255};
+static const Col C_GOOD{86, 210, 135, 255};
+
+enum CtrlKind {
+  CK_TOGGLE,
+  CK_SLIDER,
+  CK_BIND,
+  CK_SECTION,
+  CK_INFO,
+  CK_BUTTON
+};
+
+struct Ctrl {
+  int kind;
+  const char *label;
+  const char *desc;
+  int *value;
+  int min, max;
+};
+
+struct Card {
+  int cat;
+  const char *title;
+  const char *desc;
+  bool expanded;
+  bool active;
+  int bind;
+  int c0, n;
+};
+
+static Ctrl g_ctrls[192];
+static int g_nctrl = 0;
+static Card g_cards[40];
+static int g_ncards = 0;
+static int g_vals[192];
+static bool g_demo_built = false;
+
+static const char *g_cats[] = {"Movement", "Combat", "Visuals", "Weapons",
+                               "System"};
+static constexpr int CAT_COUNT = 5;
+
+static int add_card(int cat, const char *title, const char *desc,
+                    bool expanded) {
+  Card &c = g_cards[g_ncards];
+  c.cat = cat;
+  c.title = title;
+  c.desc = desc;
+  c.expanded = expanded;
+  c.active = true;
+  c.bind = 0;
+  c.c0 = g_nctrl;
+  c.n = 0;
+  return g_ncards++;
+}
+static void add_ctrl(int card, int kind, const char *label, const char *desc,
+                     int min, int max, int init) {
+  int i = g_nctrl++;
+  g_vals[i] = init;
+  g_ctrls[i].kind = kind;
+  g_ctrls[i].label = label;
+  g_ctrls[i].desc = desc;
+  g_ctrls[i].value = &g_vals[i];
+  g_ctrls[i].min = min;
+  g_ctrls[i].max = max;
+  g_cards[card].n++;
+}
+static void add_toggle(int card, const char *label, const char *desc,
+                       int init) {
+  add_ctrl(card, CK_TOGGLE, label, desc, 0, 1, init);
+}
+static void add_slider(int card, const char *label, const char *desc, int min,
+                       int max, int init) {
+  add_ctrl(card, CK_SLIDER, label, desc, min, max, init);
+}
+static void add_section(int card, const char *label) {
+  add_ctrl(card, CK_SECTION, label, nullptr, 0, 0, 0);
+}
+static void add_info(int card, const char *label) {
+  add_ctrl(card, CK_INFO, label, nullptr, 0, 0, 0);
+}
+static void add_button(int card, const char *label, const char *desc) {
+  add_ctrl(card, CK_BUTTON, label, desc, 0, 0, 0);
+}
+
+static void build_demo() {
+  if (g_demo_built)
+    return;
+  g_demo_built = true;
+
+  int bhop = add_card(0, "Bunnyhop", "Automatic jump on landing.", true);
+  add_toggle(bhop, "Uni-directional auto-strafe",
+             "Rotate airborne movement into the velocity.", 1);
+
+  int abh = add_card(0, "ABH", "Accelerate on the jump tick by facing away "
+                              "from the velocity.", true);
+  (void)abh;
+
+  int jb = add_card(0, "Jumpbug", "Duck+jump when landing would hurt.", true);
+  add_toggle(jb, "Assist timing",
+             "Nudge the final command into the unduck window.", 0);
+
+  int aim = add_card(1, "Aimbot", "Smoothly snap to a hostile target.", true);
+  g_cards[aim].bind = 604;
+  add_toggle(aim, "Vischeck", "Require world line of sight.", 1);
+  add_slider(aim, "FOV", "Maximum angular distance from the crosshair.", 1, 180,
+             60);
+  add_slider(aim, "Smoothness", "Maximum degrees per tick.", 1, 45, 5);
+  add_toggle(aim, "Show FOV circle", "Draw the acquisition cone on screen.", 1);
+  add_section(aim, "Bones");
+  add_toggle(aim, "Head", "Aim at the head hitbox.", 1);
+  add_toggle(aim, "Torso", "Aim at the chest/stomach.", 0);
+  add_toggle(aim, "Left arm", "Include the left arm.", 0);
+  add_toggle(aim, "Right arm", "Include the right arm.", 0);
+  add_toggle(aim, "Left leg", "Include the left leg.", 0);
+  add_toggle(aim, "Right leg", "Include the right leg.", 0);
+
+  int sil = add_card(1, "Silent aim", "Fire at the target without turning "
+                                     "the rendered view.", true);
+  g_cards[sil].bind = 602;
+  add_slider(sil, "FOV", "Maximum angular distance from the crosshair.", 1, 180,
+             60);
+
+  int tb = add_card(1, "Triggerbot", "Fire when the crosshair is on a hostile.",
+                    true);
+  g_cards[tb].bind = 603;
+
+  int melee = add_card(1, "Melee killbot", "360-degree crowbar silent aim.",
+                       true);
+
+  int esp = add_card(2, "ESP", "Draw hostile NPC information.", true);
+  add_toggle(esp, "Show neutral", "Include neutral wildlife.", 1);
+  add_toggle(esp, "Show healthbar", "Draw a health bar.", 1);
+  add_toggle(esp, "Show healthnum", "Draw the numeric health value.", 1);
+  add_toggle(esp, "Show name", "Draw the model name.", 1);
+  add_toggle(esp, "Show skeleton", "Draw the animated bone links.", 1);
+  add_toggle(esp, "Show box", "Draw a bounding box.", 1);
+  add_toggle(esp, "Show speed graph", "Draw the lower-center speed graph.", 1);
+
+  int spread = add_card(3, "Spread control",
+                        "Choose a server shot seed that tightens the cone.",
+                        true);
+  add_toggle(spread, "No spread",
+             "Override the FireBullets seed with the best offset.", 1);
+
+  int sys = add_card(4, "System", "Configuration and maintenance.", true);
+  add_info(sys, "Config: ~/.config/hl2hake/config");
+  add_info(sys, "Build: GUI shell preview");
+  add_button(sys, "Reload config", "Re-read the INI without restarting.");
+  add_button(sys, "Reset defaults", "Restore feature defaults; GUI layout kept.");
+
+  (void)g_cards[melee];
+}
+
+// ---------------------------------------------------------------------------
+// Window state / input
+// ---------------------------------------------------------------------------
+
+static bool g_open = false;
+static bool g_was_open = false;
+static bool g_dragging = false;
+static int g_drag_dx = 0, g_drag_dy = 0;
+static int g_win_x = 0, g_win_y = 0, g_win_w = 0, g_win_h = 0;
+static float g_scale = 1.0f;
+static bool g_positioned = false;
+static int g_cat = 0;
+static float g_scroll = 0.0f;
+static float g_scroll_max = 0.0f;
+static bool g_scroll_drag = false;
+static int g_scroll_drag_dy = 0;
+static float g_scroll_drag_start = 0.0f;
+static int g_hover_slider = -1;
+static int g_slider_drag = -1;
+static int g_capture_card = -1;
+static QAngle g_frozen{0, 0, 0};
+static int g_mouse_x = 0, g_mouse_y = 0;
+static bool g_mouse_click = false;
+static bool g_mouse_down = false;
+static bool g_mouse_rclick = false;
+static unsigned int g_prev_mask = 0;
+static unsigned char g_prev_keys[512] = {};
+static bool g_prev_cursor = true;
+static bool g_prev_relative = true;
+static double g_hover_since = 0.0;
+static const char *g_hover_desc = nullptr;
+static const char *g_hover_prev = nullptr;
+static int g_hover_x = 0, g_hover_y = 0;
+static int g_hover_last_mx = -1, g_hover_last_my = -1;
+
+static int S(float v) { return (int)(v * g_scale + 0.5f); }
+static float now_sec() {
+  struct timespec ts;
+  clock_gettime(CLOCK_MONOTONIC, &ts);
+  return (float)ts.tv_sec + (float)ts.tv_nsec * 1e-9f;
+}
+
+static void ensure_fonts() {
+  if (g_font_body && fabsf(g_font_scale - g_scale) < 0.001f)
+    return;
+  g_font_scale = g_scale;
+  g_body_h = (int)(15.0f * g_scale + 0.5f);
+  g_title_h = (int)(20.0f * g_scale + 0.5f);
+  if (g_body_h < 11) g_body_h = 11;
+  if (g_title_h < 15) g_title_h = 15;
+  static const char *families[] = {"Liberation Sans", "DejaVu Sans",
+                                   "Noto Sans", "Tahoma", "Verdana", "Arial",
+                                   nullptr};
+  if (!g_font_body) {
+    for (int i = 0; families[i] && !g_font_body; i++) {
+      unsigned long f = s_create_font();
+      if (!f)
+        break;
+      if (s_set_font(f, families[i], g_body_h, 400, 0x400, 0x20, 0xFF))
+        g_font_body = f;
+    }
+  }
+  if (!g_font_title) {
+    for (int i = 0; families[i] && !g_font_title; i++) {
+      unsigned long f = s_create_font();
+      if (!f)
+        break;
+      if (s_set_font(f, families[i], g_title_h, 400, 0x400, 0x20, 0xFF))
+        g_font_title = f;
+    }
+  }
+  if (!g_font_title)
+    g_font_title = g_font_body;
+  if (!g_font_body)
+    logf("gui: no usable body font");
+}
+
+static int text_w(const char *s, int tall) {
+  if (!s) return 0;
+  return (int)(strlen(s) * tall * 0.52f + 0.5f);
+}
+
+static void draw_text_raw(int x, int y, const char *s, unsigned long font,
+                          int tall) {
+  (void)tall;
+  if (!s || !font)
+    return;
+  wchar_t w[256];
+  size_t n = mbstowcs(w, s, 255);
+  if (n == (size_t)-1)
+    return;
+  w[n] = 0;
+  s_text_font(font);
+  s_text_pos(x, y);
+  s_print(w, (int)n);
+}
+
+static void text_in(const Rect &clip, int x, int y, const char *s,
+                    unsigned long font, int tall, int max_w, const Col &c) {
+  if (!s || !font)
+    return;
+  if (y < clip.y || y + tall > clip.y + clip.h)
+    return;
+  if (x >= clip.x + clip.w)
+    return;
+  if (x + text_w(s, tall) > clip.x + clip.w)
+    x = clip.x + clip.w - text_w(s, tall);
+  if (max_w > 0 && text_w(s, tall) > max_w) {
+    char buf[256];
+    snprintf(buf, sizeof(buf), "%s", s);
+    int n = (int)strlen(buf);
+    while (n > 3 && text_w(buf, tall) > max_w)
+      buf[--n] = 0;
+    if (n > 3 && n < (int)sizeof(buf) - 3) {
+      buf[n++] = '.';
+      buf[n++] = '.';
+      buf[n++] = '.';
+      buf[n] = 0;
+    }
+    s_text_color(c.r, c.g, c.b, c.a);
+    draw_text_raw(x, y, buf, font, tall);
+    return;
+  }
+  s_text_color(c.r, c.g, c.b, c.a);
+  draw_text_raw(x, y, s, font, tall);
+}
+
+static Rect clip_rect(const Rect &r, const Rect &clip) {
+  Rect o = r;
+  int x0 = r.x > clip.x ? r.x : clip.x;
+  int y0 = r.y > clip.y ? r.y : clip.y;
+  int x1 = (r.x + r.w) < (clip.x + clip.w) ? (r.x + r.w) : (clip.x + clip.w);
+  int y1 = (r.y + r.h) < (clip.y + clip.h) ? (r.y + r.h) : (clip.y + clip.h);
+  o.x = x0;
+  o.y = y0;
+  o.w = x1 - x0;
+  o.h = y1 - y0;
+  return o;
+}
+static void fill(const Rect &r, const Col &c, const Rect *clip = nullptr) {
+  if (r.w <= 0 || r.h <= 0)
+    return;
+  Rect q = clip ? clip_rect(r, *clip) : r;
+  if (q.w <= 0 || q.h <= 0)
+    return;
+  s_color(c.r, c.g, c.b, c.a);
+  s_fill(q.x, q.y, q.x + q.w, q.y + q.h);
+}
+static void outline(const Rect &r, const Col &c, const Rect *clip = nullptr) {
+  if (r.w <= 0 || r.h <= 0)
+    return;
+  Rect q = clip ? clip_rect(r, *clip) : r;
+  if (q.w <= 0 || q.h <= 0)
+    return;
+  s_color(c.r, c.g, c.b, c.a);
+  s_outline(q.x, q.y, q.x + q.w, q.y + q.h);
+}
+static void line(int x0, int y0, int x1, int y1, const Col &c) {
+  s_color(c.r, c.g, c.b, c.a);
+  s_line(x0, y0, x1, y1);
+}
+
+static const char *bind_label(int b) {
+  switch (b) {
+  case 0: return "None";
+  case 600: return "MouseL";
+  case 601: return "MouseR";
+  case 602: return "MouseM";
+  case 603: return "Mouse4";
+  case 604: return "Mouse5";
+  case 41: return "Esc";
+  case 73: return "Insert";
+  case 59: return "F2";
+  default: return "Key";
+  }
+}
+
+static void layout() {
+  int w = g_scr_w, h = g_scr_h;
+  if (g_surface) {
+    s_screen(w, h);
+    if (w > 0) g_scr_w = w;
+    if (h > 0) g_scr_h = h;
+  }
+  w = g_scr_w;
+  h = g_scr_h;
+  if (w <= 0 || h <= 0)
+    return;
+  float sc = fminf((float)w / 1920.0f, (float)h / 1080.0f);
+  if (sc < 0.75f) sc = 0.75f;
+  if (sc > 1.5f) sc = 1.5f;
+  g_scale = sc;
+  int nw = S(960.0f), nh = S(620.0f);
+  if (!g_positioned || nw != g_win_w || nh != g_win_h) {
+    if (!g_positioned) {
+      g_win_x = (w - nw) / 2;
+      g_win_y = (h - nh) / 2;
+      g_positioned = true;
+    }
+    g_win_w = nw;
+    g_win_h = nh;
+  }
+  if (g_win_x < 0) g_win_x = 0;
+  if (g_win_y < 0) g_win_y = 0;
+  if (g_win_x + g_win_w > w) g_win_x = w - g_win_w;
+  if (g_win_y + g_win_h > h) g_win_y = h - g_win_h;
+}
+
+static int row_h(const Ctrl &c) {
+  switch (c.kind) {
+  case CK_SECTION: return S(24.0f);
+  case CK_INFO: return S(20.0f);
+  case CK_BUTTON: return S(32.0f);
+  default: return S(27.0f);
+  }
+}
+
+static int body_h(const Card &c) {
+  if (!c.expanded)
+    return 0;
+  int h = S(6.0f);
+  for (int i = 0; i < c.n; i++)
+    h += row_h(g_ctrls[c.c0 + i]);
+  return h + S(6.0f);
+}
+
+static int card_h(const Card &c) { return S(36.0f) + body_h(c) + S(8.0f); }
+
+static Rect card_rect(int index, int y) {
+  Card &c = g_cards[index];
+  int x = g_win_x + S(190.0f) + S(10.0f);
+  int w = g_win_w - S(190.0f) - S(28.0f);
+  return Rect{x, y, w, card_h(c)};
+}
+
+static bool card_in_category(int i) { return g_cards[i].cat == g_cat; }
+
+static int content_height() {
+  int h = S(8.0f);
+  for (int i = 0; i < g_ncards; i++)
+    if (card_in_category(i))
+      h += card_h(g_cards[i]);
+  return h;
+}
+
+// ---------------------------------------------------------------------------
+// Input
+// ---------------------------------------------------------------------------
+
+static void close_gui() {
+  if (!g_open)
+    return;
+  g_open = false;
+  g_capture_card = -1;
+  g_dragging = false;
+  g_scroll_drag = false;
+  g_slider_drag = -1;
+  if (g_sdl_ready) {
+    if (sd_set_relative)
+      sd_set_relative(g_prev_relative ? 1 : 0);
+    if (sd_show_cursor)
+      sd_show_cursor(g_prev_cursor ? 1 : 0);
+  }
+  logf("gui: closed");
+}
+
+static void open_gui() {
+  if (g_open)
+    return;
+  int w = 0, h = 0;
+  if (g_surface) {
+    s_screen(w, h);
+    if (w > 0) g_scr_w = w;
+    if (h > 0) g_scr_h = h;
+  }
+  if (!g_iface.engine) {
+    g_frozen = QAngle{0, 0, 0};
+  } else {
+    using GetViewFn = void (*)(void *, QAngle *);
+    QAngle v{0, 0, 0};
+    vfunc<GetViewFn>(g_iface.engine, 19)(g_iface.engine, &v);
+    g_frozen = v;
+  }
+  if (g_sdl_ready) {
+    if (sd_get_relative)
+      g_prev_relative = sd_get_relative() != 0;
+    if (sd_show_cursor)
+      g_prev_cursor = sd_show_cursor(-1) != 0;
+    if (sd_set_relative)
+      sd_set_relative(0);
+    if (sd_show_cursor)
+      sd_show_cursor(1);
+  }
+  g_open = true;
+  g_capture_card = -1;
+  g_wheel.exchange(0);
+  g_scroll = 0.0f;
+  g_cat = 0;
+  menu_force_close();
+  logf("gui: opened");
+}
+
+static void update_mouse() {
+  if (!g_sdl_ready)
+    return;
+  int mx = 0, my = 0;
+  unsigned int mask = sd_get_mouse(&mx, &my);
+  g_mouse_x = mx;
+  g_mouse_y = my;
+  g_mouse_down = (mask & 1u) != 0;
+  g_mouse_click = g_mouse_down && !(g_prev_mask & 1u);
+  g_mouse_rclick = ((mask & 2u) != 0) && !(g_prev_mask & 2u);
+  if (g_mouse_x < 0) g_mouse_x = 0;
+  if (g_mouse_y < 0) g_mouse_y = 0;
+  g_prev_mask = mask;
+}
+
+static void handle_capture(const unsigned char *keys) {
+  if (g_capture_card < 0)
+    return;
+  if (!g_open) {
+    g_capture_card = -1;
+    return;
+  }
+  if (keys[41]) { // Esc cancels
+    g_capture_card = -1;
+    return;
+  }
+  if (g_mouse_click) {
+    g_cards[g_capture_card].bind = 600;
+    g_capture_card = -1;
+    return;
+  }
+  if (g_mouse_rclick) {
+    g_cards[g_capture_card].bind = 601;
+    g_capture_card = -1;
+    return;
+  }
+  for (int k = 0; k < 512; k++) {
+    if (!keys[k] || g_prev_keys[k])
+      continue;
+    if (k == 73 || k == 59) // Insert reserved; F2 closes the preview
+      continue;
+    g_cards[g_capture_card].bind = k;
+    g_capture_card = -1;
+    return;
+  }
+}
+
+static void handle_mouse_click() {
+  if (!g_mouse_click)
+    return;
+  int mx = g_mouse_x, my = g_mouse_y;
+
+  // title bar: drag or close
+  Rect title{g_win_x, g_win_y, g_win_w, S(38.0f)};
+  Rect close{g_win_x + g_win_w - S(38.0f), g_win_y, S(38.0f), S(38.0f)};
+  if (title.has(mx, my)) {
+    if (close.has(mx, my)) {
+      close_gui();
+      return;
+    }
+    g_dragging = true;
+    g_drag_dx = mx - g_win_x;
+    g_drag_dy = my - g_win_y;
+    return;
+  }
+
+  // sidebar
+  int side_x = g_win_x;
+  int side_y = g_win_y + S(38.0f);
+  int side_w = S(190.0f);
+  int cat_h = S(34.0f);
+  for (int i = 0; i < CAT_COUNT; i++) {
+    Rect r{side_x, side_y + i * cat_h, side_w, cat_h};
+    if (r.has(mx, my)) {
+      g_cat = i;
+      g_scroll = 0.0f;
+      return;
+    }
+  }
+
+  // content
+  Rect content{g_win_x + S(190.0f), g_win_y + S(38.0f),
+               g_win_w - S(190.0f), g_win_h - S(38.0f) - S(30.0f)};
+  if (!content.has(mx, my))
+    return;
+
+  // scrollbar
+  int sb_x = content.x + content.w - S(8.0f);
+  if (mx >= sb_x) {
+    if (g_scroll_max > 0.5f) {
+      int thumb_h = (int)((float)content.h * (float)content.h /
+                          (float)(content.h + (int)g_scroll_max));
+      if (thumb_h < S(24.0f)) thumb_h = S(24.0f);
+      int travel = content.h - thumb_h;
+      int thumb_y = content.y + (int)((g_scroll_max > 0.0f)
+                                          ? (g_scroll / g_scroll_max) * travel
+                                          : 0);
+      if (my >= thumb_y && my < thumb_y + thumb_h) {
+        g_scroll_drag = true;
+        g_scroll_drag_dy = my - thumb_y;
+        g_scroll_drag_start = g_scroll;
+      } else {
+        float t = (float)(my - content.y) / (float)content.h;
+        g_scroll = t * g_scroll_max;
+      }
+    }
+    return;
+  }
+
+  int y = content.y - (int)g_scroll + S(8.0f);
+  for (int i = 0; i < g_ncards; i++) {
+    if (!card_in_category(i))
+      continue;
+    Card &c = g_cards[i];
+    Rect cr = card_rect(i, y);
+    int ch = card_h(c);
+    if (my >= cr.y && my < cr.y + ch) {
+      // header
+      if (my < cr.y + S(36.0f)) {
+        if (c.cat != 4) {
+          Rect active{cr.x + cr.w - S(150.0f), cr.y + S(9.0f), S(18.0f),
+                      S(18.0f)};
+          Rect bind{cr.x + cr.w - S(112.0f), cr.y + S(7.0f), S(100.0f),
+                    S(22.0f)};
+          if (active.has(mx, my)) {
+            c.active = !c.active;
+            return;
+          }
+          if (bind.has(mx, my)) {
+            if (mx >= bind.x + bind.w - S(18.0f)) {
+              c.bind = 0;
+              return;
+            }
+            g_capture_card = i;
+            return;
+          }
+        }
+        c.expanded = !c.expanded;
+        return;
+      }
+      // body
+      int by = cr.y + S(36.0f) + S(6.0f);
+      for (int j = 0; j < c.n; j++) {
+        Ctrl &ct = g_ctrls[c.c0 + j];
+        int rh = row_h(ct);
+        if (my < by || my >= by + rh) {
+          by += rh;
+          continue;
+        }
+        if (ct.kind == CK_TOGGLE) {
+          *ct.value = !*ct.value;
+          return;
+        }
+        if (ct.kind == CK_SLIDER) {
+          Rect track{cr.x + S(16.0f) + S(230.0f), by + S(9.0f),
+                     cr.w - S(16.0f) - S(230.0f) - S(64.0f), S(8.0f)};
+          if (mx >= track.x && mx < track.x + track.w) {
+            float t = (float)(mx - track.x) / (float)track.w;
+            int v = ct.min + (int)(t * (ct.max - ct.min) + 0.5f);
+            if (v < ct.min) v = ct.min;
+            if (v > ct.max) v = ct.max;
+            *ct.value = v;
+            g_slider_drag = c.c0 + j;
+          }
+          return;
+        }
+        if (ct.kind == CK_BUTTON) {
+          Rect b{cr.x + cr.w - S(130.0f), by + S(3.0f), S(114.0f),
+                 S(26.0f)};
+          if (b.has(mx, my)) {
+            logf("gui: dummy action %s", ct.label ? ct.label : "?");
+            return;
+          }
+        }
+        return;
+      }
+    }
+    y += ch;
+  }
+}
+
+static void handle_hover() {
+  g_hover_desc = nullptr;
+  g_hover_slider = -1;
+  int mx = g_mouse_x, my = g_mouse_y;
+  Rect content{g_win_x + S(190.0f), g_win_y + S(38.0f),
+               g_win_w - S(190.0f), g_win_h - S(38.0f) - S(30.0f)};
+  if (!content.has(mx, my))
+    return;
+  int y = content.y - (int)g_scroll + S(8.0f);
+  for (int i = 0; i < g_ncards; i++) {
+    if (!card_in_category(i))
+      continue;
+    Card &c = g_cards[i];
+    Rect cr = card_rect(i, y);
+    int ch = card_h(c);
+    if (my >= cr.y && my < cr.y + ch) {
+      if (my < cr.y + S(36.0f)) {
+        g_hover_desc = c.desc;
+        return;
+      }
+      int by = cr.y + S(36.0f) + S(6.0f);
+      for (int j = 0; j < c.n; j++) {
+        Ctrl &ct = g_ctrls[c.c0 + j];
+        int rh = row_h(ct);
+        if (my >= by && my < by + rh) {
+          g_hover_desc = ct.desc;
+          if (ct.kind == CK_SLIDER)
+            g_hover_slider = c.c0 + j;
+          return;
+        }
+        by += rh;
+      }
+      return;
+    }
+    y += ch;
+  }
+}
+
+void gui_handle_input() {
+  gui_init_sdl();
+  if (!g_surface)
+    return;
+  build_demo();
+  layout();
+  if (g_scr_w <= 0 || g_scr_h <= 0)
+    return;
+  ensure_fonts();
+  if (!g_sdl_ready)
+    return;
+
+  int nk = 0;
+  const unsigned char *keys = sd_get_keys(&nk);
+  if (!keys)
+    return;
+  if (nk > 512) nk = 512;
+  update_mouse();
+
+  bool f2 = (nk > 59) && keys[59];
+  bool f2_edge = f2 && !g_prev_keys[59];
+  bool esc = (nk > 41) && keys[41];
+  bool esc_edge = esc && !g_prev_keys[41];
+  bool left = (nk > 80) && keys[80];
+  bool right = (nk > 79) && keys[79];
+  bool left_edge = left && !g_prev_keys[80];
+  bool right_edge = right && !g_prev_keys[79];
+
+  if (f2_edge) {
+    if (g_open)
+      close_gui();
+    else
+      open_gui();
+  }
+  if (!g_open) {
+    memcpy(g_prev_keys, keys, nk);
+    g_was_open = false;
+    return;
+  }
+
+  if (esc_edge) {
+    if (g_capture_card >= 0)
+      g_capture_card = -1;
+    else
+      close_gui();
+  }
+
+  // Keep the native cursor free even if the game re-grabs it.
+  if (sd_set_relative)
+    sd_set_relative(0);
+  if (sd_show_cursor)
+    sd_show_cursor(1);
+
+  handle_capture(keys);
+
+  if (g_dragging) {
+    if (!g_mouse_down) {
+      g_dragging = false;
+    } else {
+      g_win_x = g_mouse_x - g_drag_dx;
+      g_win_y = g_mouse_y - g_drag_dy;
+      if (g_win_x < 0) g_win_x = 0;
+      if (g_win_y < 0) g_win_y = 0;
+      if (g_win_x + g_win_w > g_scr_w) g_win_x = g_scr_w - g_win_w;
+      if (g_win_y + g_win_h > g_scr_h) g_win_y = g_scr_h - g_win_h;
+    }
+  } else {
+    handle_mouse_click();
+  }
+
+  if (g_slider_drag >= 0) {
+    if (!g_mouse_down) {
+      g_slider_drag = -1;
+    } else {
+      Ctrl &ct = g_ctrls[g_slider_drag];
+      Rect content{g_win_x + S(190.0f), g_win_y + S(38.0f),
+                   g_win_w - S(190.0f), g_win_h - S(38.0f) - S(30.0f)};
+      int x0 = g_win_x + S(190.0f) + S(16.0f) + S(230.0f);
+      int x1 = g_win_x + g_win_w - S(28.0f) - S(64.0f);
+      (void)content;
+      float t = (float)(g_mouse_x - x0) / (float)(x1 - x0);
+      int v = ct.min + (int)(t * (ct.max - ct.min) + 0.5f);
+      if (v < ct.min) v = ct.min;
+      if (v > ct.max) v = ct.max;
+      *ct.value = v;
+    }
+  }
+
+  if (g_scroll_drag) {
+    if (!g_mouse_down) {
+      g_scroll_drag = false;
+    } else {
+      Rect content{g_win_x + S(190.0f), g_win_y + S(38.0f),
+                   g_win_w - S(190.0f), g_win_h - S(38.0f) - S(30.0f)};
+      int thumb_h = (int)((float)content.h * (float)content.h /
+                          (float)(content.h + (int)g_scroll_max));
+      if (thumb_h < S(24.0f)) thumb_h = S(24.0f);
+      int travel = content.h - thumb_h;
+      if (travel > 0) {
+        float t = (float)(g_mouse_y - content.y - g_scroll_drag_dy) /
+                  (float)travel;
+        g_scroll = t * g_scroll_max;
+      }
+    }
+  }
+
+  int wheel = g_wheel.exchange(0);
+  if (wheel != 0)
+    g_scroll -= wheel * S(44.0f);
+
+  if (left_edge || right_edge) {
+    if (g_hover_slider >= 0) {
+      Ctrl &ct = g_ctrls[g_hover_slider];
+      *ct.value += right_edge ? 1 : -1;
+      if (*ct.value < ct.min) *ct.value = ct.min;
+      if (*ct.value > ct.max) *ct.value = ct.max;
+    }
+  }
+
+  int total = content_height();
+  Rect content{g_win_x + S(190.0f), g_win_y + S(38.0f),
+               g_win_w - S(190.0f), g_win_h - S(38.0f) - S(30.0f)};
+  g_scroll_max = (float)(total + S(8.0f) - content.h);
+  if (g_scroll_max < 0.0f) g_scroll_max = 0.0f;
+  if (g_scroll < 0.0f) g_scroll = 0.0f;
+  if (g_scroll > g_scroll_max) g_scroll = g_scroll_max;
+
+  handle_hover();
+  {
+    double now = now_sec();
+    int dx = abs(g_mouse_x - g_hover_last_mx);
+    int dy = abs(g_mouse_y - g_hover_last_my);
+    if (g_hover_desc != g_hover_prev || dx > 2 || dy > 2) {
+      g_hover_prev = g_hover_desc;
+      g_hover_last_mx = g_mouse_x;
+      g_hover_last_my = g_mouse_y;
+      g_hover_since = now;
+      g_hover_x = g_mouse_x;
+      g_hover_y = g_mouse_y;
+    }
+  }
+
+  memcpy(g_prev_keys, keys, nk);
+  g_was_open = true;
+}
+
+// ---------------------------------------------------------------------------
+// Draw
+// ---------------------------------------------------------------------------
+
+static void draw_checkbox(int x, int y, bool on) {
+  Rect box{x, y, S(15.0f), S(15.0f)};
+  fill(box, on ? C_ACCENT : Col{30, 34, 42, 255});
+  outline(box, C_BORDER);
+  if (on) {
+    line(x + S(3.0f), y + S(8.0f), x + S(7.0f), y + S(12.0f), C_BG);
+    line(x + S(7.0f), y + S(12.0f), x + S(13.0f), y + S(4.0f), C_BG);
+  }
+}
+
+static void draw_slider(const Rect &clip, const Rect &cr, int y, const Ctrl &ct) {
+  int track_x = cr.x + S(16.0f) + S(230.0f);
+  int track_w = cr.w - S(16.0f) - S(230.0f) - S(64.0f);
+  if (track_w < S(30.0f)) track_w = S(30.0f);
+  Rect track{track_x, y + S(9.0f), track_w, S(8.0f)};
+  fill(track, Col{38, 42, 50, 255}, &clip);
+  float t = (ct.max > ct.min)
+                ? (float)(*ct.value - ct.min) / (float)(ct.max - ct.min)
+                : 0.0f;
+  int fw = (int)(track_w * t + 0.5f);
+  fill(Rect{track.x, track.y, fw, track.h}, C_ACCENT_DIM, &clip);
+  int kx = track.x + fw - S(4.0f);
+  fill(Rect{kx, track.y - S(4.0f), S(8.0f), S(16.0f)}, C_ACCENT, &clip);
+  char val[32];
+  snprintf(val, sizeof(val), "%d", *ct.value);
+  text_in(clip, cr.x + cr.w - S(52.0f), y + S(4.0f), val, g_font_body, g_body_h,
+          S(44.0f), C_TEXT);
+}
+
+static void draw_card(const Rect &clip, int index, int y) {
+  Card &c = g_cards[index];
+  Rect cr = card_rect(index, y);
+  Rect bg = clip_rect(cr, clip);
+  if (bg.w <= 0 || bg.h <= 0)
+    return;
+  fill(cr, C_PANEL, &clip);
+  outline(cr, Col{52, 57, 67, 255}, &clip);
+  Rect head{cr.x, cr.y, cr.w, S(36.0f)};
+  fill(head, C_HEADER, &clip);
+  // expand arrow
+  int ax = cr.x + S(10.0f), ay = cr.y + S(13.0f);
+  if (c.expanded) {
+    line(ax, ay, ax + S(4.0f), ay + S(5.0f), C_DIM);
+    line(ax + S(4.0f), ay + S(5.0f), ax + S(8.0f), ay, C_DIM);
+  } else {
+    line(ax, ay, ax + S(5.0f), ay + S(4.0f), C_DIM);
+    line(ax + S(5.0f), ay + S(4.0f), ax, ay + S(8.0f), C_DIM);
+  }
+  text_in(clip, cr.x + S(24.0f), cr.y + S(8.0f), c.title, g_font_title,
+          g_title_h, cr.w - S(180.0f), C_TEXT);
+  if (c.cat != 4) {
+    draw_checkbox(cr.x + cr.w - S(150.0f), cr.y + S(10.0f), c.active);
+    text_in(clip, cr.x + cr.w - S(128.0f), cr.y + S(9.0f),
+            c.active ? "On" : "Off", g_font_body, g_body_h, S(30.0f),
+            c.active ? C_GOOD : C_DIM);
+    Rect bind{cr.x + cr.w - S(112.0f), cr.y + S(7.0f), S(100.0f), S(22.0f)};
+    fill(bind, Col{45, 50, 60, 255}, &clip);
+    outline(bind, C_BORDER, &clip);
+    const char *bl = (g_capture_card == index) ? "Press..." : bind_label(c.bind);
+    text_in(clip, bind.x + S(7.0f), bind.y + S(3.0f), bl, g_font_body, g_body_h,
+            bind.w - S(22.0f), C_TEXT);
+    text_in(clip, bind.x + bind.w - S(16.0f), bind.y + S(3.0f), "x",
+            g_font_body, g_body_h, S(10.0f), C_DIM);
+  }
+  if (!c.expanded)
+    return;
+
+  int by = cr.y + S(36.0f) + S(6.0f);
+  for (int j = 0; j < c.n; j++) {
+    Ctrl &ct = g_ctrls[c.c0 + j];
+    int rh = row_h(ct);
+    if (ct.kind == CK_SECTION) {
+      text_in(clip, cr.x + S(16.0f), by + S(3.0f), ct.label, g_font_body,
+              g_body_h, cr.w - S(24.0f), C_ACCENT);
+    } else if (ct.kind == CK_INFO) {
+      text_in(clip, cr.x + S(16.0f), by + S(1.0f), ct.label, g_font_body,
+              g_body_h, cr.w - S(24.0f), C_DIM);
+    } else if (ct.kind == CK_BUTTON) {
+      Rect b{cr.x + cr.w - S(130.0f), by + S(3.0f), S(114.0f), S(26.0f)};
+      fill(b, Col{45, 50, 60, 255}, &clip);
+      outline(b, C_BORDER, &clip);
+      text_in(clip, b.x + S(10.0f), b.y + S(4.0f), ct.label, g_font_body,
+              g_body_h, b.w - S(16.0f), C_TEXT);
+    } else {
+      text_in(clip, cr.x + S(16.0f), by + S(4.0f), ct.label, g_font_body,
+              g_body_h, S(220.0f), C_TEXT);
+      if (ct.kind == CK_TOGGLE) {
+        draw_checkbox(cr.x + cr.w - S(31.0f), by + S(5.0f), *ct.value != 0);
+        text_in(clip, cr.x + cr.w - S(58.0f), by + S(3.0f),
+                *ct.value ? "On" : "Off", g_font_body, g_body_h, S(26.0f),
+                *ct.value ? C_GOOD : C_DIM);
+      } else if (ct.kind == CK_SLIDER) {
+        draw_slider(clip, cr, by, ct);
+      }
+    }
+    by += rh;
+  }
+}
+
+static void draw_tooltip() {
+  if (!g_hover_desc || !g_hover_desc[0])
+    return;
+  float d = now_sec() - (float)g_hover_since;
+  if (d < 0.4f)
+    return;
+  int tw = text_w(g_hover_desc, g_body_h) + S(16.0f);
+  int maxw = S(380.0f);
+  if (tw > maxw) tw = maxw;
+  int th = g_body_h + S(14.0f);
+  int x = g_hover_x + S(14.0f);
+  int y = g_hover_y + S(16.0f);
+  if (x + tw > g_scr_w - S(4.0f)) x = g_hover_x - tw - S(10.0f);
+  if (y + th > g_scr_h - S(4.0f)) y = g_hover_y - th - S(10.0f);
+  Rect r{x, y, tw, th};
+  fill(r, Col{12, 14, 18, 248});
+  outline(r, C_ACCENT_DIM);
+  Rect inner{x + S(7.0f), y + S(6.0f), tw - S(14.0f), g_body_h};
+  text_in(inner, inner.x, inner.y, g_hover_desc, g_font_body, g_body_h,
+          inner.w, C_TEXT);
+}
+
+void gui_draw() {
+  if (!g_open || !g_surface)
+    return;
+  layout();
+  ensure_fonts();
+  int w = g_scr_w, h = g_scr_h;
+  if (w <= 0 || h <= 0)
+    return;
+  Rect win{g_win_x, g_win_y, g_win_w, g_win_h};
+  fill(Rect{win.x + S(6.0f), win.y + S(6.0f), win.w, win.h},
+       Col{0, 0, 0, 100});
+  fill(win, C_BG);
+  outline(win, C_BORDER);
+  Rect title{win.x, win.y, win.w, S(38.0f)};
+  fill(title, Col{31, 35, 42, 255});
+  fill(Rect{win.x, win.y, S(4.0f), win.h}, C_ACCENT);
+  text_in(win, win.x + S(16.0f), win.y + S(7.0f), "HL2hake", g_font_title,
+          g_title_h, win.w - S(80.0f), C_TEXT);
+  text_in(win, win.x + S(110.0f), win.y + S(10.0f), "GUI shell preview",
+          g_font_body, g_body_h, win.w - S(180.0f), C_DIM);
+  Rect close{win.x + win.w - S(38.0f), win.y, S(38.0f), S(38.0f)};
+  fill(close, Col{45, 48, 56, 255});
+  line(close.x + S(13.0f), close.y + S(12.0f), close.x + S(25.0f),
+       close.y + S(25.0f), C_DIM);
+  line(close.x + S(25.0f), close.y + S(12.0f), close.x + S(13.0f),
+       close.y + S(25.0f), C_DIM);
+
+  Rect side{win.x, win.y + S(38.0f), S(190.0f),
+            win.h - S(38.0f) - S(30.0f)};
+  fill(side, C_SIDEBAR);
+  int cat_h = S(34.0f);
+  for (int i = 0; i < CAT_COUNT; i++) {
+    Rect r{side.x, side.y + i * cat_h, side.w, cat_h};
+    if (i == g_cat) {
+      fill(r, Col{42, 45, 54, 255});
+      fill(Rect{r.x, r.y, S(3.0f), r.h}, C_ACCENT);
+    }
+    text_in(side, r.x + S(18.0f), r.y + S(8.0f), g_cats[i], g_font_body,
+            g_body_h, r.w - S(24.0f), i == g_cat ? C_TEXT : C_DIM);
+  }
+
+  Rect content{win.x + S(190.0f), win.y + S(38.0f),
+               win.w - S(190.0f), win.h - S(38.0f) - S(30.0f)};
+  fill(content, Col{20, 22, 27, 255});
+  Rect clip{content.x + S(4.0f), content.y + S(4.0f), content.w - S(20.0f),
+            content.h - S(8.0f)};
+  int y = content.y - (int)g_scroll + S(8.0f);
+  for (int i = 0; i < g_ncards; i++) {
+    if (!card_in_category(i))
+      continue;
+    Card &c = g_cards[i];
+    int ch = card_h(c);
+    if (y + ch >= clip.y && y <= clip.y + clip.h)
+      draw_card(clip, i, y);
+    y += ch;
+  }
+
+  // scrollbar
+  if (g_scroll_max > 0.5f) {
+    Rect track{content.x + content.w - S(8.0f), content.y, S(8.0f),
+               content.h};
+    fill(track, Col{30, 33, 40, 255});
+    int thumb_h = (int)((float)content.h * (float)content.h /
+                        (float)(content.h + (int)g_scroll_max));
+    if (thumb_h < S(24.0f)) thumb_h = S(24.0f);
+    int travel = content.h - thumb_h;
+    int thumb_y = content.y + (int)((g_scroll_max > 0.0f)
+                                        ? (g_scroll / g_scroll_max) * travel
+                                        : 0);
+    fill(Rect{track.x, thumb_y, track.w, thumb_h}, C_ACCENT_DIM);
+  }
+
+  Rect foot{win.x, win.y + win.h - S(30.0f), win.w, S(30.0f)};
+  fill(foot, Col{24, 27, 33, 255});
+  line(foot.x, foot.y, foot.x + foot.w, foot.y, C_BORDER);
+  text_in(foot, foot.x + S(12.0f), foot.y + S(6.0f),
+          "config: ~/.config/hl2hake/config", g_font_body, g_body_h,
+          foot.w - S(220.0f), C_DIM);
+  text_in(foot, foot.x + foot.w - S(200.0f), foot.y + S(6.0f),
+          g_capture_card >= 0 ? "press a key / Esc" : "F2 close  |  Insert text",
+          g_font_body, g_body_h, S(190.0f), C_DIM);
+
+  draw_tooltip();
+}
+
+bool gui_is_open() { return g_open; }
+QAngle gui_frozen_view() { return g_frozen; }
diff --git a/src/hl2h.cpp b/src/hl2h.cpp
index c4f8aad..c0c27af 100644
--- a/src/hl2h.cpp
+++ b/src/hl2h.cpp
@@ -540,6 +540,25 @@ static void do_move(int seq, float frametime) {
   bool inwater = (flags & FL_INWATER) != 0;
   const float *vel = (const float *)(e + g_net.velocity);
 
+  if (gui_is_open()) {
+    QAngle f = gui_frozen_view();
+    g_cam_view = Vector{f.x, f.y, f.z};
+    cmd->viewangles[0] = f.x;
+    cmd->viewangles[1] = f.y;
+    cmd->viewangles[2] = f.z;
+    cmd->forwardmove = 0.0f;
+    cmd->sidemove = 0.0f;
+    cmd->upmove = 0.0f;
+    cmd->buttons = 0;
+    cmd->impulse = 0;
+    cmd->weaponselect = 0;
+    cmd->weaponsubtype = 0;
+    cmd->mousedx = 0;
+    cmd->mousedy = 0;
+    note_modified(cmd, flags, vel);
+    return;
+  }
+
   bool bhop_on = feature_active(FEAT_BHOP);
   bool abh_on = feature_active(FEAT_ABH);
 
diff --git a/src/hl2h.h b/src/hl2h.h
index 285b591..11b9014 100644
--- a/src/hl2h.h
+++ b/src/hl2h.h
@@ -230,6 +230,11 @@ bool head_position(int idx, Vector &out);
 int aim_points(int idx, unsigned group_mask, Vector *out, int max);
 
 void outer_draw();
+void menu_force_close();
+void gui_handle_input();
+void gui_draw();
+bool gui_is_open();
+QAngle gui_frozen_view();
 // ISurface pointer (defined in menu.cpp, used for drawing tests)
 struct ISurface;
 extern ISurface *g_surface;
diff --git a/src/menu.cpp b/src/menu.cpp
index 9dffc9e..56fe6fa 100644
--- a/src/menu.cpp
+++ b/src/menu.cpp
@@ -625,9 +625,15 @@ int silentaim_fov() { return g_silent_fov; }
 
 bool aimbot_fov_circle() { return g_aim_fov_circle; }
 
+void menu_force_close() {
+  g_menu_open = false;
+  g_bind_mode = false;
+  g_insert_latch = false;
+  g_menu_draw_logged = false;
+}
+
 static void menu_handle_input() {
   poll_keyboard();
-
   // SDL state can be sampled several times per rendered frame (both ISurface
   // hooks call outer_draw). Use a physical-key latch instead of the one-poll
   // edge so one press cannot open and close the menu in the same frame.
@@ -838,11 +844,13 @@ void draw_text_col(int x, int y, const char *text, int r, int g, int b) {
 // (see hkdDrawPrintText hook in hl2h.cpp): we wrap our draws in
 // PushMakeCurrent/PopMakeCurrent so they are submitted with a clean clip.
 void outer_draw() {
-  menu_handle_input();
+  gui_handle_input();
+  if (!gui_is_open())
+    menu_handle_input();
   // HL2H_DRAW_TEST=1 draws a probe rect without needing the menu open
   static bool draw_test = getenv("HL2H_DRAW_TEST") != nullptr;
   bool esp_on = feature_active(FEAT_ESP);
-  if (!g_surface || (!g_menu_open && !draw_test && !esp_on))
+  if (!g_surface || (!g_menu_open && !gui_is_open() && !draw_test && !esp_on))
     return;
 
   // Level/menu -> game transitions can invalidate the VGUI font handle.
@@ -896,6 +904,11 @@ void outer_draw() {
     surf_draw_set_color(255, 255, 255, 255);
     draw_text(28, 36, "HL2H DRAW TEST");
   }
+  if (gui_is_open()) {
+    gui_draw();
+    surf_pop_make_current(panel);
+    return;
+  }
   if (!g_menu_open) {
     surf_pop_make_current(panel);
     return;