diff --git a/config/profiles.py b/config/profiles.py
new file mode 100644
index 0000000..d935ca3
--- /dev/null
+++ b/config/profiles.py
@@ -0,0 +1,93 @@
+# v3.0.2 profiles.py
+from dataclasses import dataclass
+from typing import Final
+
+
+@dataclass(frozen=True, slots=True)
+class ThemePalette:
+    name: str
+    background: str
+    background_inactive: str
+    border_active: str
+    border_inactive: str
+    border_dragging: str
+    foreground: str
+    selection: str
+    code_background: str
+    shadow: str
+
+
+THEMES: Final[list[ThemePalette]] = [
+    ThemePalette(
+        name="macos_blue",
+        background="rgba(15,23,42,0.26)",
+        background_inactive="rgba(15,23,42,0.18)",
+        border_active="rgba(125,211,252,0.34)",
+        border_inactive="rgba(255,255,255,0.10)",
+        border_dragging="rgba(125,211,252,0.52)",
+        foreground="rgba(248,250,252,0.96)",
+        selection="rgba(56,189,248,0.30)",
+        code_background="rgba(255,255,255,0.08)",
+        shadow="rgba(15,23,42,0.30)",
+    ),
+    ThemePalette(
+        name="ruby",
+        background="rgba(69,10,10,0.24)",
+        background_inactive="rgba(69,10,10,0.16)",
+        border_active="rgba(251,113,133,0.34)",
+        border_inactive="rgba(255,255,255,0.10)",
+        border_dragging="rgba(251,113,133,0.52)",
+        foreground="rgba(255,241,242,0.96)",
+        selection="rgba(244,63,94,0.30)",
+        code_background="rgba(255,255,255,0.08)",
+        shadow="rgba(69,10,10,0.30)",
+    ),
+    ThemePalette(
+        name="yellow",
+        background="rgba(113,63,18,0.24)",
+        background_inactive="rgba(113,63,18,0.16)",
+        border_active="rgba(250,204,21,0.36)",
+        border_inactive="rgba(255,255,255,0.10)",
+        border_dragging="rgba(250,204,21,0.56)",
+        foreground="rgba(254,252,232,0.96)",
+        selection="rgba(250,204,21,0.28)",
+        code_background="rgba(255,255,255,0.08)",
+        shadow="rgba(113,63,18,0.28)",
+    ),
+    ThemePalette(
+        name="jade",
+        background="rgba(2,44,34,0.24)",
+        background_inactive="rgba(2,44,34,0.16)",
+        border_active="rgba(52,211,153,0.34)",
+        border_inactive="rgba(255,255,255,0.10)",
+        border_dragging="rgba(52,211,153,0.52)",
+        foreground="rgba(236,253,245,0.96)",
+        selection="rgba(16,185,129,0.28)",
+        code_background="rgba(255,255,255,0.08)",
+        shadow="rgba(2,44,34,0.30)",
+    ),
+    ThemePalette(
+        name="light",
+        background="rgba(255,255,255,0.34)",
+        background_inactive="rgba(255,255,255,0.24)",
+        border_active="rgba(148,163,184,0.32)",
+        border_inactive="rgba(148,163,184,0.18)",
+        border_dragging="rgba(96,165,250,0.42)",
+        foreground="rgba(15,23,42,0.96)",
+        selection="rgba(96,165,250,0.22)",
+        code_background="rgba(15,23,42,0.06)",
+        shadow="rgba(15,23,42,0.12)",
+    ),
+    ThemePalette(
+        name="dark",
+        background="rgba(10,10,10,0.34)",
+        background_inactive="rgba(10,10,10,0.24)",
+        border_active="rgba(255,255,255,0.16)",
+        border_inactive="rgba(255,255,255,0.08)",
+        border_dragging="rgba(255,255,255,0.24)",
+        foreground="rgba(250,250,250,0.96)",
+        selection="rgba(255,255,255,0.14)",
+        code_background="rgba(255,255,255,0.06)",
+        shadow="rgba(0,0,0,0.42)",
+    ),
+]
\ No newline at end of file
diff --git a/config/settings.py b/config/settings.py
new file mode 100644
index 0000000..1c8bb39
--- /dev/null
+++ b/config/settings.py
@@ -0,0 +1,357 @@
+# v3.1.1 settings.py
+import json
+from dataclasses import dataclass
+from pathlib import Path
+from typing import Final
+
+
+APP_DIR: Final[Path] = (
+    Path(__file__).resolve().parent.parent
+)
+
+SETTINGS_FILE: Final[Path] = (
+    APP_DIR / "settings.json"
+)
+
+
+DEFAULT_SETTINGS: Final[dict] = {
+    "active_profile": "default",
+    "profiles": {
+        "default": {
+            "theme": "macos_blue",
+            "window": {
+                "width": 260,
+                "height": 300,
+                "min_width": 220,
+                "min_height": 140,
+                "layout_margin": 4,
+                "layout_spacing": 4,
+                "drag_handle_height": 28,
+                "resize_grip_size": 16,
+                "corner_radius": 16,
+                "startup_stabilize_ms": 80,
+            },
+            "appearance": {
+                "enable_mica": True,
+                "enable_acrylic": True,
+                "enable_glass_blur": True,
+                "enable_animations": True,
+                "enable_shadow": True,
+                "opacity_active": 1.0,
+                "opacity_inactive": 0.96,
+                "opacity_dragging": 0.92,
+                "focus_animation_ms": 180,
+            },
+            "editor": {
+                "font_family": [
+                    "Inter",
+                    "SF Pro Display",
+                    "Helvetica",
+                    "Arial",
+                    "system-ui",
+                ],
+                "font_size": 13,
+                "preview_delay_ms": 700,
+                "save_debounce_ms": 500,
+                "max_note_size": 2_000_000,
+                "enable_markdown_preview": True,
+                "enable_clickable_links": True,
+                "enable_antialiasing": True,
+                "enable_spellcheck": False,
+                "padding": 8,
+            },
+            "behavior": {
+                "enable_tray": True,
+                "enable_persistence": True,
+                "enable_window_memory": True,
+                "enable_auto_restore": True,
+                "high_contrast_inactive": False,
+            },
+        },
+        "light": {
+            "theme": "light",
+            "window": {
+                "width": 260,
+                "height": 300,
+                "min_width": 220,
+                "min_height": 140,
+                "layout_margin": 4,
+                "layout_spacing": 4,
+                "drag_handle_height": 28,
+                "resize_grip_size": 16,
+                "corner_radius": 16,
+                "startup_stabilize_ms": 80,
+            },
+            "appearance": {
+                "enable_mica": False,
+                "enable_acrylic": False,
+                "enable_glass_blur": False,
+                "enable_animations": True,
+                "enable_shadow": False,
+                "opacity_active": 1.0,
+                "opacity_inactive": 0.98,
+                "opacity_dragging": 0.96,
+                "focus_animation_ms": 120,
+            },
+            "editor": {
+                "font_family": [
+                    "Inter",
+                    "Segoe UI",
+                    "Arial",
+                    "system-ui",
+                ],
+                "font_size": 13,
+                "preview_delay_ms": 500,
+                "save_debounce_ms": 400,
+                "max_note_size": 2_000_000,
+                "enable_markdown_preview": True,
+                "enable_clickable_links": True,
+                "enable_antialiasing": True,
+                "enable_spellcheck": False,
+                "padding": 8,
+            },
+            "behavior": {
+                "enable_tray": True,
+                "enable_persistence": True,
+                "enable_window_memory": True,
+                "enable_auto_restore": True,
+                "high_contrast_inactive": False,
+            },
+        },
+        "accessibility": {
+            "theme": "dark",
+            "window": {
+                "width": 320,
+                "height": 380,
+                "min_width": 260,
+                "min_height": 180,
+                "layout_margin": 6,
+                "layout_spacing": 6,
+                "drag_handle_height": 32,
+                "resize_grip_size": 18,
+                "corner_radius": 18,
+                "startup_stabilize_ms": 80,
+            },
+            "appearance": {
+                "enable_mica": False,
+                "enable_acrylic": False,
+                "enable_glass_blur": False,
+                "enable_animations": False,
+                "enable_shadow": False,
+                "opacity_active": 1.0,
+                "opacity_inactive": 1.0,
+                "opacity_dragging": 1.0,
+                "focus_animation_ms": 0,
+            },
+            "editor": {
+                "font_family": [
+                    "Inter",
+                    "Segoe UI",
+                    "Arial",
+                    "system-ui",
+                ],
+                "font_size": 15,
+                "preview_delay_ms": 300,
+                "save_debounce_ms": 300,
+                "max_note_size": 2_000_000,
+                "enable_markdown_preview": True,
+                "enable_clickable_links": True,
+                "enable_antialiasing": True,
+                "enable_spellcheck": False,
+                "padding": 10,
+            },
+            "behavior": {
+                "enable_tray": True,
+                "enable_persistence": True,
+                "enable_window_memory": True,
+                "enable_auto_restore": True,
+                "high_contrast_inactive": True,
+            },
+        },
+    },
+}
+
+
+@dataclass(slots=True)
+class SettingsManager:
+    settings: dict
+
+    @classmethod
+    def load(cls) -> "SettingsManager":
+        if not SETTINGS_FILE.exists():
+            SETTINGS_FILE.write_text(
+                json.dumps(
+                    DEFAULT_SETTINGS,
+                    indent=2,
+                ),
+                encoding="utf-8",
+            )
+
+            return cls(
+                DEFAULT_SETTINGS
+            )
+
+        try:
+            raw = SETTINGS_FILE.read_text(
+                encoding="utf-8",
+            )
+
+            data = json.loads(raw)
+
+            merged = cls.merge_defaults(
+                DEFAULT_SETTINGS,
+                data,
+            )
+
+            return cls(merged)
+
+        except Exception:
+            return cls(
+                DEFAULT_SETTINGS
+            )
+
+    @staticmethod
+    def merge_defaults(
+        defaults: dict,
+        current: dict,
+    ) -> dict:
+        result = {}
+
+        for key, value in defaults.items():
+            result[key] = value
+
+        for key, value in current.items():
+            if (
+                key in result
+                and isinstance(
+                    result[key],
+                    dict,
+                )
+                and isinstance(
+                    value,
+                    dict,
+                )
+            ):
+                result[key] = (
+                    SettingsManager.merge_defaults(
+                        result[key],
+                        value,
+                    )
+                )
+
+            else:
+                result[key] = value
+
+        return result
+
+    def save(self) -> None:
+        SETTINGS_FILE.write_text(
+            json.dumps(
+                self.settings,
+                indent=2,
+            ),
+            encoding="utf-8",
+        )
+
+    @property
+    def active_profile_name(
+        self,
+    ) -> str:
+        return self.settings.get(
+            "active_profile",
+            "default",
+        )
+
+    @property
+    def profiles(self) -> dict:
+        return self.settings.get(
+            "profiles",
+            {},
+        )
+
+    @property
+    def profile(self) -> dict:
+        active = (
+            self.active_profile_name
+        )
+
+        profiles = self.profiles
+
+        if active not in profiles:
+            return profiles[
+                "default"
+            ]
+
+        return profiles[active]
+
+    def set_active_profile(
+        self,
+        profile_name: str,
+    ) -> None:
+        if (
+            profile_name
+            not in self.profiles
+        ):
+            return
+
+        self.settings[
+            "active_profile"
+        ] = profile_name
+
+        self.save()
+
+    def reload(self) -> None:
+        loaded = (
+            SettingsManager.load()
+        )
+
+        self.settings = (
+            loaded.settings
+        )
+
+    def reset(self) -> None:
+        self.settings = (
+            DEFAULT_SETTINGS
+        )
+
+        self.save()
+
+    def create_profile(
+        self,
+        name: str,
+        data: dict,
+    ) -> None:
+        self.settings[
+            "profiles"
+        ][name] = data
+
+        self.save()
+
+    def delete_profile(
+        self,
+        name: str,
+    ) -> None:
+        if name == "default":
+            return
+
+        if (
+            name
+            not in self.settings[
+                "profiles"
+            ]
+        ):
+            return
+
+        del self.settings[
+            "profiles"
+        ][name]
+
+        if (
+            self.active_profile_name
+            == name
+        ):
+            self.settings[
+                "active_profile"
+            ] = "default"
+
+        self.save()
\ No newline at end of file