Cara Implement Dark Mode dengan Claude Code

ダークモードimplementasi dengan Claude Code: efisiensi

ダークモード 今やWebaplikasi 標準機能 す 、implementasi CSS設計、状態manajemen、persistensi dll.多く 考慮 diperlukan.Claude Codeなら一貫 設計 waktu singkat implementasi bisa dilakukan.

CSSvariabelによるtema設計

Pertama-tama CSSvariabel tematoken definisi.

> CSSvariabelベース dengan ライト/ダークtema 設計して。
> セマンティックな色名 使って、Tailwind dan integrasi dengan きるよう.

/* globals.css */
:root {
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8fafc;
  --color-bg-tertiary: #f1f5f9;
  --color-text-primary: #0f172a;
  --color-text-secondary: #475569;
  --color-text-tertiary: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-hover: #cbd5e1;
  --color-accent: #3b82f6;
  --color-accent-hover: #2563eb;
  --color-surface: #ffffff;
  --color-surface-hover: #f8fafc;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
}

[data-theme="dark"] {
  --color-bg-primary: #0f172a;
  --color-bg-secondary: #1e293b;
  --color-bg-tertiary: #334155;
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #cbd5e1;
  --color-text-tertiary: #64748b;
  --color-border: #334155;
  --color-border-hover: #475569;
  --color-accent: #60a5fa;
  --color-accent-hover: #93bbfd;
  --color-surface: #1e293b;
  --color-surface-hover: #334155;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
}

implementasi temaperalihan

sistempengaturan連動 dan 手動peralihan 両方 dukungan フック 作り.

import { useState, useEffect, useCallback } from "react";

type Theme = "light" | "dark" | "system";

export function useTheme() {
  const [theme, setThemeState] = useState<Theme>(() => {
    if (typeof window === "undefined") return "system";
    return (localStorage.getItem("theme") as Theme) || "system";
  });

  const [resolvedTheme, setResolvedTheme] = useState<"light" | "dark">("light");

  const applyTheme = useCallback((newTheme: Theme) => {
    const root = document.documentElement;
    let resolved: "light" | "dark";

    if (newTheme === "system") {
      resolved = window.matchMedia("(prefers-color-scheme: dark)").matches
        ? "dark"
        : "light";
    } else {
      resolved = newTheme;
    }

    root.setAttribute("data-theme", resolved);
    setResolvedTheme(resolved);
  }, []);

  const setTheme = useCallback(
    (newTheme: Theme) => {
      setThemeState(newTheme);
      localStorage.setItem("theme", newTheme);
      applyTheme(newTheme);
    },
    [applyTheme]
  );

  useEffect(() => {
    applyTheme(theme);

    const mediaQuery = window.matchMedia("(prefers-color-scheme: dark)");
    const handleChange = () => {
      if (theme === "system") applyTheme("system");
    };

    mediaQuery.addEventListener("change", handleChange);
    return () => mediaQuery.removeEventListener("change", handleChange);
  }, [theme, applyTheme]);

  return { theme, setTheme, resolvedTheme };
}

temaperalihantombol

import { useTheme } from "@/hooks/useTheme";

export function ThemeToggle() {
  const { theme, setTheme, resolvedTheme } = useTheme();

  const options: { value: Theme; label: string; icon: string }[] = [
    { value: "light", label: "ライト", icon: "sun" },
    { value: "dark", label: "ダーク", icon: "moon" },
    { value: "system", label: "sistem", icon: "monitor" },
  ];

  return (
    <div className="flex items-center gap-1 p-1 rounded-lg bg-[var(--color-bg-tertiary)]">
      {options.map((option) => (
        <button
          key={option.value}
          onClick={() => setTheme(option.value)}
          className={`px-3 py-1.5 rounded-md text-sm transition-colors ${
            theme === option.value
              ? "bg-[var(--color-surface)] text-[var(--color-text-primary)] shadow-sm"
              : "text-[var(--color-text-secondary)] hover:text-[var(--color-text-primary)]"
          }`}
          aria-label={option.label}
        >
          {option.label}
        </button>
      ))}
    </div>
  );
}

防止 FOUC（ちらつき）

halamanloading時 tema 一瞬切り替わるちらつき 防ぐscript.

<!-- head内に配置 -->
<script>
  (function () {
    const theme = localStorage.getItem("theme") || "system";
    let resolved = theme;
    if (theme === "system") {
      resolved = window.matchMedia("(prefers-color-scheme: dark)").matches
        ? "dark"
        : "light";
    }
    document.documentElement.setAttribute("data-theme", resolved);
  })();
</script>

integrasi Tailwind CSS

// tailwind.config.js
module.exports = {
  darkMode: ["selector", '[data-theme="dark"]'],
  theme: {
    extend: {
      colors: {
        bg: {
          primary: "var(--color-bg-primary)",
          secondary: "var(--color-bg-secondary)",
          tertiary: "var(--color-bg-tertiary)",
        },
        text: {
          primary: "var(--color-text-primary)",
          secondary: "var(--color-text-secondary)",
        },
        surface: {
          DEFAULT: "var(--color-surface)",
          hover: "var(--color-surface-hover)",
        },
      },
    },
  },
};

デザインsistem dan integrasi デザインsistempembangunan 、レスポンシブdukungan レスポンシブデザイン silakan lihat.

Summary

Dengan Claude Code, CSSvariabel設計、temaperalihanロジック、FOUC防止、Tailwindintegrasiま 、ダークモード implementasi 一貫 waktu singkat selesai bisa dilakukan.「ダークモード penambahan 」 dan 依頼 だけ 、既存proyek juga tepat 組み込め.

Untuk detail lebih lanjut, lihat Dokumentasi Resmi Claude Code.