добавление возможности создания своего цвета акцента

index.html

@@ -173,6 +173,45 @@
               data-accent="amber"
               aria-label="Янтарный акцент"
             ></button>
+            <button
+              class="accent-swatch accent-swatch-custom"
+              type="button"
+              data-accent="custom"
+              aria-label="Свой градиент"
+              title="Свой градиент"
+            >
+              <span class="accent-swatch-label">Свой</span>
+            </button>
+          </div>
+
+          <!-- Настройки пользовательского linear-gradient акцента. -->
+          <div class="accent-custom-panel" data-accent-custom-panel hidden>
+            <p class="accent-custom-title">Свой градиент</p>
+
+            <label class="accent-custom-row">
+              <span>Угол</span>
+              <input
+                type="range"
+                min="0"
+                max="360"
+                step="1"
+                value="135"
+                data-custom-accent-angle
+              />
+              <output data-custom-accent-angle-value>135°</output>
+            </label>
+
+            <label class="accent-custom-row">
+              <span>Цвет от</span>
+              <input type="color" value="#8b5cf6" data-custom-accent-from />
+            </label>
+
+            <label class="accent-custom-row">
+              <span>Цвет до</span>
+              <input type="color" value="#22d3ee" data-custom-accent-to />
+            </label>
+
+            <div class="accent-custom-preview" data-custom-accent-preview aria-hidden="true"></div>
           </div>
         </div>
 

script.js

@@ -166,12 +166,16 @@ const defaultPreferences = {
   theme: window.matchMedia("(prefers-color-scheme: light)").matches ? "light" : "dark",
   view: "cards",
   accent: "violet",
+  customAccentFrom: "#8b5cf6",
+  customAccentTo: "#22d3ee",
+  customAccentAngle: 135,
   showNumbers: false,
   showTreeTags: true,
   autoCollapseSearch: true,
   sidebarWidth: 390,
 };
 const availableViews = ["cards", "list", "compact-cards", "compact-list"];
+const availableAccents = ["violet", "cyan", "lime", "amber", "custom"];
 
 // ============================================================================
 // Runtime state and DOM references
@@ -194,6 +198,12 @@ const settingsClose = document.querySelector("[data-settings-close]");
 const themeButtons = document.querySelectorAll("[data-theme]");
 const viewButtons = document.querySelectorAll("[data-view]");
 const accentButtons = document.querySelectorAll("[data-accent]");
+const accentCustomPanel = document.querySelector("[data-accent-custom-panel]");
+const customAccentFromInput = document.querySelector("[data-custom-accent-from]");
+const customAccentToInput = document.querySelector("[data-custom-accent-to]");
+const customAccentAngleInput = document.querySelector("[data-custom-accent-angle]");
+const customAccentAngleValue = document.querySelector("[data-custom-accent-angle-value]");
+const customAccentPreview = document.querySelector("[data-custom-accent-preview]");
 const showNumbersInput = document.querySelector("[data-show-numbers]");
 const showTreeTagsInput = document.querySelector("[data-show-tree-tags]");
 const autoCollapseSearchInput = document.querySelector("[data-auto-collapse-search]");
@@ -285,7 +295,7 @@ viewButtons.forEach((button) => {
   });
 });
 
-// Выбор цветового акцента.
+// Выбор цветового акцента из пресетов или пользовательского градиента.
 accentButtons.forEach((button) => {
   button.addEventListener("click", () => {
     preferences.accent = button.dataset.accent;
@@ -294,6 +304,20 @@ accentButtons.forEach((button) => {
   });
 });
 
+// Изменение параметров своего градиента сразу переключает accent на custom.
+function handleCustomAccentChange() {
+  preferences.customAccentFrom = customAccentFromInput.value;
+  preferences.customAccentTo = customAccentToInput.value;
+  preferences.customAccentAngle = Number(customAccentAngleInput.value);
+  preferences.accent = "custom";
+  applyPreferences(preferences);
+  savePreferences(preferences);
+}
+
+customAccentFromInput.addEventListener("input", handleCustomAccentChange);
+customAccentToInput.addEventListener("input", handleCustomAccentChange);
+customAccentAngleInput.addEventListener("input", handleCustomAccentChange);
+
 // Показывает/скрывает номера в секциях, группах и карточках.
 showNumbersInput.addEventListener("change", () => {
   preferences.showNumbers = showNumbersInput.checked;
@@ -718,8 +742,21 @@ function applyPreferences(nextPreferences) {
     nextPreferences.view = defaultPreferences.view;
   }
 
+  if (!availableAccents.includes(nextPreferences.accent)) {
+    nextPreferences.accent = defaultPreferences.accent;
+  }
+
+  nextPreferences.customAccentFrom = normalizeHexColor(nextPreferences.customAccentFrom) || defaultPreferences.customAccentFrom;
+  nextPreferences.customAccentTo = normalizeHexColor(nextPreferences.customAccentTo) || defaultPreferences.customAccentTo;
+  nextPreferences.customAccentAngle = clamp(
+    Number(nextPreferences.customAccentAngle) || defaultPreferences.customAccentAngle,
+    0,
+    360,
+  );
+
   document.documentElement.dataset.theme = nextPreferences.theme;
   document.documentElement.dataset.accent = nextPreferences.accent;
+  applyAccentVariables(nextPreferences);
   document.documentElement.style.setProperty(
     "--sidebar-width",
     `${clamp(Number(nextPreferences.sidebarWidth) || defaultPreferences.sidebarWidth, 260, 560)}px`,
@@ -731,11 +768,87 @@ function applyPreferences(nextPreferences) {
   showNumbersInput.checked = Boolean(nextPreferences.showNumbers);
   showTreeTagsInput.checked = Boolean(nextPreferences.showTreeTags);
   autoCollapseSearchInput.checked = Boolean(nextPreferences.autoCollapseSearch);
+  customAccentFromInput.value = nextPreferences.customAccentFrom;
+  customAccentToInput.value = nextPreferences.customAccentTo;
+  customAccentAngleInput.value = String(nextPreferences.customAccentAngle);
+  customAccentAngleValue.textContent = `${nextPreferences.customAccentAngle}°`;
+  accentCustomPanel.hidden = nextPreferences.accent !== "custom";
+  updateCustomAccentPreview(nextPreferences);
   setActiveButton(themeButtons, "theme", nextPreferences.theme);
   setActiveButton(viewButtons, "view", nextPreferences.view);
   setActiveButton(accentButtons, "accent", nextPreferences.accent);
 }
 
+// Применяет CSS-переменные акцента для пресетов или пользовательского градиента.
+function applyAccentVariables(nextPreferences) {
+  const root = document.documentElement;
+
+  if (nextPreferences.accent === "custom") {
+    root.style.setProperty("--accent", nextPreferences.customAccentFrom);
+    root.style.setProperty("--accent-2", nextPreferences.customAccentTo);
+    root.style.setProperty("--accent-angle", `${nextPreferences.customAccentAngle}deg`);
+
+    const rgb = hexToRgb(nextPreferences.customAccentFrom);
+    if (rgb) {
+      root.style.setProperty("--accent-rgb", `${rgb.r}, ${rgb.g}, ${rgb.b}`);
+    }
+
+    return;
+  }
+
+  root.style.removeProperty("--accent");
+  root.style.removeProperty("--accent-2");
+  root.style.removeProperty("--accent-rgb");
+  root.style.removeProperty("--accent-angle");
+}
+
+// Обновляет превью пользовательского градиента в настройках и на кнопке custom.
+function updateCustomAccentPreview(nextPreferences) {
+  const gradient = `linear-gradient(${nextPreferences.customAccentAngle}deg, ${nextPreferences.customAccentFrom}, ${nextPreferences.customAccentTo})`;
+  customAccentPreview.style.background = gradient;
+
+  const customSwatch = document.querySelector('[data-accent="custom"]');
+  if (customSwatch) {
+    customSwatch.style.setProperty("--custom-accent-from", nextPreferences.customAccentFrom);
+    customSwatch.style.setProperty("--custom-accent-to", nextPreferences.customAccentTo);
+    customSwatch.style.setProperty("--custom-accent-angle", `${nextPreferences.customAccentAngle}deg`);
+  }
+}
+
+// Приводит hex-цвет к формату #rrggbb для input[type="color"].
+function normalizeHexColor(value) {
+  if (typeof value !== "string") {
+    return null;
+  }
+
+  const normalized = value.trim().toLowerCase();
+
+  if (/^#[0-9a-f]{6}$/.test(normalized)) {
+    return normalized;
+  }
+
+  if (/^#[0-9a-f]{3}$/.test(normalized)) {
+    return `#${normalized[1]}${normalized[1]}${normalized[2]}${normalized[2]}${normalized[3]}${normalized[3]}`;
+  }
+
+  return null;
+}
+
+// Конвертирует hex в RGB для CSS-переменной --accent-rgb.
+function hexToRgb(value) {
+  const hex = normalizeHexColor(value);
+
+  if (!hex) {
+    return null;
+  }
+
+  return {
+    r: Number.parseInt(hex.slice(1, 3), 16),
+    g: Number.parseInt(hex.slice(3, 5), 16),
+    b: Number.parseInt(hex.slice(5, 7), 16),
+  };
+}
+
 // Обновляет визуальное состояние группы кнопок.
 function setActiveButton(buttons, key, value) {
   buttons.forEach((button) => {

styles.css

@@ -20,6 +20,7 @@
   --accent: #8b5cf6;
   --accent-2: #22d3ee;
   --accent-rgb: 139, 92, 246;
+  --accent-angle: 135deg;
   --card-x: 50%;
   --card-y: 50%;
   --sidebar-width: 390px;
@@ -273,7 +274,7 @@ html[data-show-tree-tags="false"] .tree-node small {
   border-radius: 4px;
   padding: 0 2px;
   color: white;
-  background: linear-gradient(135deg, var(--accent), var(--accent-2));
+  background: linear-gradient(var(--accent-angle), var(--accent), var(--accent-2));
 }
 
 /* ==========================================================================
@@ -494,7 +495,7 @@ html[data-show-tree-tags="false"] .tree-node small {
 
 .toggle-row input:checked {
   border-color: rgba(var(--accent-rgb), 0.6);
-  background: linear-gradient(135deg, var(--accent), var(--accent-2));
+  background: linear-gradient(var(--accent-angle), var(--accent), var(--accent-2));
 }
 
 .toggle-row input:checked::before {
@@ -556,12 +557,18 @@ html[data-show-tree-tags="false"] .tree-node small {
 }
 
 .segmented.is-active {
-  background: linear-gradient(135deg, var(--accent), var(--accent-2));
+  background: linear-gradient(var(--accent-angle), var(--accent), var(--accent-2));
   color: white;
 }
 
 .accent-group {
-  justify-content: space-between;
+  flex-wrap: wrap;
+  justify-content: flex-start;
+  row-gap: 8px;
+}
+
+.accent-group > span {
+  width: 100%;
 }
 
 .accent-swatch {
@@ -594,6 +601,130 @@ html[data-show-tree-tags="false"] .tree-node small {
   transform: scale(1.05);
 }
 
+/* Кнопка своего градиента: pill, пунктир, подпись и превию через CSS-переменные. */
+.accent-swatch-custom {
+  position: relative;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  overflow: hidden;
+  width: auto;
+  min-width: 58px;
+  height: 32px;
+  padding: 0 10px;
+  border: 2px dashed rgba(255, 255, 255, 0.42);
+  box-shadow: none;
+  background:
+    linear-gradient(45deg, rgba(255, 255, 255, 0.08) 25%, transparent 25%, transparent 75%, rgba(255, 255, 255, 0.08) 75%),
+    linear-gradient(45deg, rgba(255, 255, 255, 0.08) 25%, transparent 25%, transparent 75%, rgba(255, 255, 255, 0.08) 75%);
+  background-size: 8px 8px;
+  background-position: 0 0, 4px 4px;
+}
+
+html[data-theme="light"] .accent-swatch-custom {
+  border-color: rgba(15, 23, 42, 0.28);
+  background:
+    linear-gradient(45deg, rgba(15, 23, 42, 0.06) 25%, transparent 25%, transparent 75%, rgba(15, 23, 42, 0.06) 75%),
+    linear-gradient(45deg, rgba(15, 23, 42, 0.06) 25%, transparent 25%, transparent 75%, rgba(15, 23, 42, 0.06) 75%);
+  background-size: 8px 8px;
+  background-position: 0 0, 4px 4px;
+}
+
+.accent-swatch-custom::before {
+  content: "";
+  position: absolute;
+  inset: 2px;
+  border-radius: inherit;
+  background: linear-gradient(
+    var(--custom-accent-angle, 135deg),
+    var(--custom-accent-from, #8b5cf6),
+    var(--custom-accent-to, #22d3ee)
+  );
+}
+
+.accent-swatch-label {
+  position: relative;
+  z-index: 1;
+  color: white;
+  font-size: 0.72rem;
+  font-weight: 900;
+  letter-spacing: 0.04em;
+  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.45);
+}
+
+.accent-swatch-custom.is-active {
+  border-style: solid;
+  border-color: var(--text);
+  transform: scale(1.05);
+}
+
+/* Панель настройки своего градиента появляется при data-accent="custom". */
+.accent-custom-panel {
+  display: grid;
+  gap: 8px;
+  padding: 10px;
+  border: 1px solid var(--border);
+  border-radius: 18px;
+  background: var(--surface);
+}
+
+.accent-custom-panel[hidden] {
+  display: none;
+}
+
+.accent-custom-title {
+  margin: 0;
+  color: var(--muted);
+  font-size: 0.78rem;
+  font-weight: 800;
+  letter-spacing: 0.08em;
+  text-transform: uppercase;
+}
+
+.accent-custom-row {
+  display: grid;
+  grid-template-columns: 72px minmax(0, 1fr) auto;
+  align-items: center;
+  gap: 8px;
+  color: var(--muted);
+  font-size: 0.84rem;
+  font-weight: 700;
+}
+
+.accent-custom-row input[type="range"] {
+  width: 100%;
+  accent-color: var(--accent);
+}
+
+.accent-custom-row input[type="color"] {
+  width: 100%;
+  height: 34px;
+  padding: 2px;
+  border: 1px solid var(--border);
+  border-radius: 10px;
+  background: var(--panel);
+  cursor: pointer;
+}
+
+.accent-custom-row:has(input[type="color"]) {
+  grid-template-columns: 72px 1fr;
+}
+
+.accent-custom-row output {
+  min-width: 3.2rem;
+  color: var(--accent);
+  font-size: 0.82rem;
+  font-weight: 800;
+  text-align: right;
+}
+
+.accent-custom-preview {
+  height: 36px;
+  border: 1px solid var(--border);
+  border-radius: 12px;
+  background: linear-gradient(var(--accent-angle), var(--accent), var(--accent-2));
+}
+
 /* ==========================================================================
    08. File-Tree Navigation
    --------------------------------------------------------------------------
@@ -1038,7 +1169,7 @@ html[data-show-tree-tags="false"] .tree-node small {
 .nav-card.is-hovered .arrow,
 .nav-card:focus-visible .arrow {
   transform: translateX(4px);
-  background: linear-gradient(135deg, var(--accent), var(--accent-2));
+  background: linear-gradient(var(--accent-angle), var(--accent), var(--accent-2));
   color: white;
 }