adding new themes

static/app.css

@@ -93,6 +93,78 @@ html, [data-theme="dark"] {
   --danger: #f87171; --input-bg: #251420; --bg-hover: #352030;
 }
 
+/* ── Urban Slate ─────────────────────────────────────── */
+[data-theme="urban-slate"] {
+  --bg: #eef0f3; --surface: #ffffff; --border: #d4d8de;
+  --text: #2b3038; --muted: #6b7480;
+  --primary: #4a6a8a; --primary-bg: #3d5a75; --primary-dark: #2f4a60; --on-primary: #ffffff;
+  --danger: #c0392b; --input-bg: #ffffff; --bg-hover: #e2e6ec;
+}
+
+/* ── Frozen Mist ─────────────────────────────────────── */
+[data-theme="frozen-mist"] {
+  --bg: #eef0f2; --surface: #fcfcfd; --border: #dfe3e8;
+  --text: #33383e; --muted: #828a94;
+  --primary: #c96f3a; --primary-bg: #b85f2e; --primary-dark: #9c4f24; --on-primary: #ffffff;
+  --danger: #c0392b; --input-bg: #ffffff; --bg-hover: #e3e7ec;
+}
+
+/* ── Yacht ───────────────────────────────────────────── */
+[data-theme="yacht"] {
+  --bg: #e9edf2; --surface: #ffffff; --border: #ccd4de;
+  --text: #26303c; --muted: #6d7986;
+  --primary: #33517a; --primary-bg: #2a4466; --primary-dark: #1f3550; --on-primary: #ffffff;
+  --danger: #b24436; --input-bg: #ffffff; --bg-hover: #dde3ea;
+}
+
+/* ── Copper ──────────────────────────────────────────── */
+[data-theme="copper"] {
+  --bg: #f3ede6; --surface: #fdfaf5; --border: #e0d3c2;
+  --text: #3a2f26; --muted: #8c7f70;
+  --primary: #b5653b; --primary-bg: #a5552f; --primary-dark: #8a4625; --on-primary: #ffffff;
+  --danger: #c0392b; --input-bg: #ffffff; --bg-hover: #e9dfd2;
+}
+
+/* ── Marina ──────────────────────────────────────────── */
+[data-theme="marina"] {
+  --bg: #eaf0f4; --surface: #ffffff; --border: #d2dde5;
+  --text: #24303c; --muted: #6f7f8c;
+  --primary: #1f4e6e; --primary-bg: #1a425c; --primary-dark: #12344a; --on-primary: #ffffff;
+  --danger: #b2432f; --input-bg: #ffffff; --bg-hover: #dee7ee;
+}
+
+/* ── Neptune ─────────────────────────────────────────── */
+[data-theme="neptune"] {
+  --bg: #e7f1f4; --surface: #ffffff; --border: #cde0e6;
+  --text: #1f2f36; --muted: #6d838c;
+  --primary: #2f7fa0; --primary-bg: #276f8e; --primary-dark: #1e5c77; --on-primary: #ffffff;
+  --danger: #c0392b; --input-bg: #ffffff; --bg-hover: #d9e8ec;
+}
+
+/* ── Sapphire ────────────────────────────────────────── */
+[data-theme="sapphire"] {
+  --bg: #eef0f6; --surface: #ffffff; --border: #dcdde8;
+  --text: #2d3440; --muted: #787f8e;
+  --primary: #5a73a6; --primary-bg: #4d6395; --primary-dark: #3d5078; --on-primary: #ffffff;
+  --danger: #c0553d; --input-bg: #ffffff; --bg-hover: #e2e4ee;
+}
+
+/* ── Tropical ────────────────────────────────────────── */
+[data-theme="tropical"] {
+  --bg: #f2efe6; --surface: #fdfaf2; --border: #e0d9c2;
+  --text: #28302e; --muted: #7d8680;
+  --primary: #e76f51; --primary-bg: #d95f41; --primary-dark: #c04e33; --on-primary: #ffffff;
+  --danger: #c0392b; --input-bg: #ffffff; --bg-hover: #e9e4d4;
+}
+
+/* ── Gossamer ────────────────────────────────────────── */
+[data-theme="gossamer"] {
+  --bg: #eceef1; --surface: #ffffff; --border: #d8dce2;
+  --text: #2c3238; --muted: #77808a;
+  --primary: #3aa6a0; --primary-bg: #2f918b; --primary-dark: #257771; --on-primary: #ffffff;
+  --danger: #d0563a; --input-bg: #ffffff; --bg-hover: #e0e4e9;
+}
+
 * { box-sizing: border-box; }
 
 body {

static/app.js

@@ -20,6 +20,15 @@ const THEMES = [
   { id: "catppuccin", label: "Catppuccin", dark: true, dots: ["#1e1e2e", "#26263a", "#cba6f7"] },
   { id: "one-dark", label: "One Dark", dark: true, dots: ["#21252b", "#282c34", "#61afef"] },
   { id: "sunset", label: "Sunset", dark: true, dots: ["#1c1018", "#251420", "#f472b6"] },
+  { id: "urban-slate", label: "Urban Slate", dark: false, dots: ["#eef0f3", "#ffffff", "#4a6a8a"] },
+  { id: "frozen-mist", label: "Frozen Mist", dark: false, dots: ["#eef0f2", "#fcfcfd", "#c96f3a"] },
+  { id: "yacht", label: "Yacht", dark: false, dots: ["#e9edf2", "#ffffff", "#33517a"] },
+  { id: "copper", label: "Copper", dark: false, dots: ["#f3ede6", "#fdfaf5", "#b5653b"] },
+  { id: "marina", label: "Marina", dark: false, dots: ["#eaf0f4", "#ffffff", "#1f4e6e"] },
+  { id: "neptune", label: "Neptune", dark: false, dots: ["#e7f1f4", "#ffffff", "#2f7fa0"] },
+  { id: "sapphire", label: "Sapphire", dark: false, dots: ["#eef0f6", "#ffffff", "#5a73a6"] },
+  { id: "tropical", label: "Tropical", dark: false, dots: ["#f2efe6", "#fdfaf2", "#e76f51"] },
+  { id: "gossamer", label: "Gossamer", dark: false, dots: ["#eceef1", "#ffffff", "#3aa6a0"] },
 ];
 const THEME_CONFIG_KEY = "snotes-theme-config";
 const themeMQ = window.matchMedia("(prefers-color-scheme: dark)");
@@ -43,28 +52,30 @@ function activeThemeId() {
   return themeConfig.mode === "auto" ? (themeMQ.matches ? themeConfig.dark : themeConfig.light) : themeConfig.manual;
 }
 
-function applyTheme() {
+function applyTheme(labelEl, swatchEl) {
   const id = activeThemeId();
   document.documentElement.setAttribute("data-theme", id);
   const t = findTheme(id);
-  const label = document.querySelector(".theme-label");
-  const swatch = document.querySelector(".theme-btn .theme-swatch");
+  const label = labelEl || document.querySelector(".theme-label");
+  const swatch = swatchEl || document.querySelector(".theme-btn .theme-swatch");
   if (label) label.textContent = t ? t.label : "";
   if (swatch && t) swatch.innerHTML = t.dots.map((c) => `<span class="theme-dot" style="background:${c}"></span>`).join("");
 }
 
 function themeSelector() {
   const sel = el("div", { class: "theme-selector" });
+  const swatchEl = el("span", { class: "theme-swatch" });
+  const labelEl = el("span", { class: "theme-label" });
   const btn = el("button", { class: "theme-btn", title: "Change theme" }, [
-    el("span", { class: "theme-swatch" }),
-    el("span", { class: "theme-label" }),
+    swatchEl,
+    labelEl,
     el("span", { class: "chevron", html: "&#9662;" }),
   ]);
   const pop = el("div", { class: "theme-popover hidden" });
   sel.appendChild(btn); sel.appendChild(pop);
 
   function render() {
-    applyTheme();
+    applyTheme(labelEl, swatchEl);
     pop.innerHTML = `
       <div class="theme-pop-header">Themes</div>
       <div class="mode-row">