feat: add pomodoro timer

src/components/tools/generics/button/button.module.css

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+.button {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 30px;
+  height: 30px;
+  font-size: var(--font-sm);
+  color: var(--color-foreground);
+  cursor: pointer;
+  background-color: var(--color-neutral-100);
+  border: 1px solid var(--color-neutral-200);
+  border-radius: 4px;
+  outline: none;
+  transition: 0.2s;
+
+  &:focus-visible {
+    outline: 2px solid var(--color-neutral-400);
+    outline-offset: 2px;
+  }
+
+  &:hover,
+  &:focus-visible {
+    background-color: var(--color-neutral-200);
+  }
+
+  &.smallIcon {
+    font-size: var(--font-xsm);
+  }
+
+  &:disabled {
+    cursor: not-allowed;
+    opacity: 0.4;
+  }
+}

src/components/tools/generics/button/button.tsx

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+import { Tooltip } from '@/components/tooltip';
+
+import { cn } from '@/helpers/styles';
+
+import styles from './button.module.css';
+
+interface ButtonProps {
+  disabled?: boolean;
+  icon: React.ReactElement;
+  onClick: () => void;
+  smallIcon?: boolean;
+  tooltip: string;
+}
+
+export function Button({
+  disabled = false,
+  icon,
+  onClick,
+  smallIcon,
+  tooltip,
+}: ButtonProps) {
+  return (
+    <Tooltip content={tooltip} placement="bottom" showDelay={0}>
+      <button
+        className={cn(styles.button, smallIcon && styles.smallIcon)}
+        disabled={disabled}
+        onClick={onClick}
+      >
+        {icon}
+      </button>
+    </Tooltip>
+  );
+}

src/components/tools/generics/button/index.ts

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+export { Button } from './button';

src/components/tools/pomodoro/index.ts

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+export { Pomodoro } from './pomodoro';

src/components/tools/pomodoro/pomodoro.module.css

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+.header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-bottom: 8px;
+
+  & .title {
+    font-size: var(--font-sm);
+    font-weight: 500;
+    color: var(--color-foreground-subtle);
+  }
+
+  & .buttons {
+    display: flex;
+    column-gap: 4px;
+    align-items: center;
+  }
+}
+
+.control {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-top: 8px;
+
+  & .completed {
+    font-size: var(--font-xsm);
+    color: var(--color-foreground-subtle);
+  }
+
+  & .buttons {
+    display: flex;
+    column-gap: 4px;
+    align-items: center;
+  }
+}

src/components/tools/pomodoro/pomodoro.tsx

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+import { useState, useEffect, useRef, useMemo } from 'react';
+import { FaUndo, FaPlay, FaPause } from 'react-icons/fa/index';
+import { IoMdSettings } from 'react-icons/io/index';
+
+import { Button } from '../generics/button';
+import { Timer } from '@/components/timer';
+import { Container } from '@/components/container';
+import { Tabs } from './tabs';
+import { Setting } from './setting';
+
+import { useLocalStorage } from '@/hooks/use-local-storage';
+import { useSoundEffect } from '@/hooks/use-sound-effect';
+import { usePomodoroStore } from '@/stores/pomodoro';
+import { useCloseListener } from '@/hooks/use-close-listener';
+
+import styles from './pomodoro.module.css';
+
+export function Pomodoro() {
+  const [showSetting, setShowSetting] = useState(false);
+
+  const [selectedTab, setSelectedTab] = useState('pomodoro');
+
+  const running = usePomodoroStore(state => state.running);
+  const setRunning = usePomodoroStore(state => state.setRunning);
+
+  const [timer, setTimer] = useState(0);
+  const interval = useRef<ReturnType<typeof setInterval> | null>(null);
+
+  const alarm = useSoundEffect('/sounds/alarm.mp3');
+
+  const defaultTimes = useMemo(
+    () => ({
+      long: 15 * 60,
+      pomodoro: 25 * 60,
+      short: 5 * 60,
+    }),
+    [],
+  );
+
+  const [times, setTimes] = useLocalStorage<Record<string, number>>(
+    'moodist-pomodoro-setting',
+    defaultTimes,
+  );
+
+  const [completions, setCompletions] = useState<Record<string, number>>({
+    long: 0,
+    pomodoro: 0,
+    short: 0,
+  });
+
+  const tabs = useMemo(
+    () => [
+      { id: 'pomodoro', label: 'Pomodoro' },
+      { id: 'short', label: 'Break' },
+      { id: 'long', label: 'Long Break' },
+    ],
+    [],
+  );
+
+  useCloseListener(() => setShowSetting(false));
+
+  useEffect(() => {
+    if (running) {
+      if (interval.current) clearInterval(interval.current);
+
+      interval.current = setInterval(() => {
+        setTimer(prev => prev - 1);
+      }, 1000);
+    } else {
+      if (interval.current) clearInterval(interval.current);
+    }
+  }, [running]);
+
+  useEffect(() => {
+    if (timer <= 0 && running) {
+      if (interval.current) clearInterval(interval.current);
+
+      alarm.play();
+
+      setRunning(false);
+      setCompletions(prev => ({
+        ...prev,
+        [selectedTab]: prev[selectedTab] + 1,
+      }));
+    }
+  }, [timer, selectedTab, running, setRunning, alarm]);
+
+  useEffect(() => {
+    const time = times[selectedTab] || 10;
+
+    if (interval.current) clearInterval(interval.current);
+
+    setRunning(false);
+    setTimer(time);
+  }, [selectedTab, times, setRunning]);
+
+  const toggleRunning = () => {
+    if (running) setRunning(false);
+    else if (timer <= 0) {
+      const time = times[selectedTab] || 10;
+
+      setTimer(time);
+      setRunning(true);
+    } else setRunning(true);
+  };
+
+  const restart = () => {
+    if (interval.current) clearInterval(interval.current);
+
+    const time = times[selectedTab] || 10;
+
+    setRunning(false);
+    setTimer(time);
+  };
+
+  return (
+    <Container>
+      <header className={styles.header}>
+        <h2 className={styles.title}>Pomodoro Timer</h2>
+
+        <div className={styles.button}>
+          <Button
+            icon={<IoMdSettings />}
+            tooltip="Change Times"
+            onClick={() => {
+              setShowSetting(true);
+            }}
+          />
+        </div>
+      </header>
+
+      <Tabs selectedTab={selectedTab} tabs={tabs} onSelect={setSelectedTab} />
+      <Timer timer={timer} />
+
+      <div className={styles.control}>
+        <p className={styles.completed}>
+          {completions[selectedTab] || 0} completed
+        </p>
+        <div className={styles.buttons}>
+          <Button
+            icon={<FaUndo />}
+            smallIcon
+            tooltip="Restart"
+            onClick={restart}
+          />
+          <Button
+            icon={running ? <FaPause /> : <FaPlay />}
+            smallIcon
+            tooltip={running ? 'Pause' : 'Start'}
+            onClick={toggleRunning}
+          />
+        </div>
+      </div>
+
+      <Setting
+        show={showSetting}
+        times={times}
+        onChange={times => {
+          setShowSetting(false);
+          setTimes(times);
+        }}
+        onClose={() => {
+          setShowSetting(false);
+        }}
+      />
+    </Container>
+  );
+}

src/components/tools/pomodoro/setting/index.ts

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+export { Setting } from './setting';

src/components/tools/pomodoro/setting/setting.module.css

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+.title {
+  margin-bottom: 16px;
+  font-family: var(--font-heading);
+  font-size: var(--font-md);
+  font-weight: 600;
+}
+
+& .form {
+  display: flex;
+  flex-direction: column;
+
+  & .field {
+    display: flex;
+    flex-direction: column;
+    row-gap: 8px;
+    margin-bottom: 16px;
+
+    & .label {
+      font-size: var(--font-sm);
+      color: var(--color-foreground);
+
+      & span {
+        color: var(--color-foreground-subtle);
+      }
+    }
+
+    & .input {
+      display: block;
+      height: 40px;
+      padding: 0 8px;
+      color: var(--color-foreground);
+      background-color: var(--color-neutral-50);
+      border: 1px solid var(--color-neutral-200);
+      border-radius: 4px;
+      outline: none;
+
+      &:focus-visible {
+        outline: 2px solid var(--color-neutral-400);
+        outline-offset: 2px;
+      }
+    }
+  }
+
+  & .buttons {
+    display: flex;
+    column-gap: 8px;
+    align-items: center;
+    justify-content: flex-end;
+
+    & button {
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      height: 40px;
+      padding: 0 16px;
+      font-size: var(--font-sm);
+      font-weight: 500;
+      color: var(--color-foreground);
+      cursor: pointer;
+      background-color: var(--color-neutral-200);
+      border: none;
+      border-radius: 4px;
+      outline: none;
+
+      &:focus-visible {
+        outline: 2px solid var(--color-neutral-400);
+        outline-offset: 2px;
+      }
+
+      &.primary {
+        color: var(--color-neutral-100);
+        background-color: var(--color-neutral-950);
+      }
+    }
+  }
+}

src/components/tools/pomodoro/setting/setting.tsx

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+import { useEffect, useState } from 'react';
+
+import { Modal } from '@/components/modal';
+
+import styles from './setting.module.css';
+
+interface SettingProps {
+  onChange: (newTimes: Record<string, number>) => void;
+  onClose: () => void;
+  show: boolean;
+  times: Record<string, number>;
+}
+
+export function Setting({ onChange, onClose, show, times }: SettingProps) {
+  const [values, setValues] = useState<Record<string, number | string>>(times);
+
+  useEffect(() => {
+    if (show) setValues(times);
+  }, [times, show]);
+
+  const handleChange = (id: string) => (value: number | string) => {
+    setValues(prev => ({
+      ...prev,
+      [id]: typeof value === 'number' ? value * 60 : '',
+    }));
+  };
+
+  const handleSubmit = (e: React.FormEvent<HTMLFormElement>) => {
+    e.preventDefault();
+
+    const newValues: Record<string, number> = {};
+
+    Object.keys(values).forEach(name => {
+      newValues[name] =
+        typeof values[name] === 'number' ? values[name] : times[name];
+    });
+
+    onChange(newValues);
+  };
+
+  const handleCancel = (e: React.MouseEvent<HTMLButtonElement, MouseEvent>) => {
+    e.preventDefault();
+
+    onClose();
+  };
+
+  return (
+    <Modal lockBody={false} show={show} onClose={onClose}>
+      <h2 className={styles.title}>Change Times</h2>
+
+      <form className={styles.form} onSubmit={handleSubmit}>
+        <Field
+          id="pomodoro"
+          label="Pomodoro"
+          value={values.pomodoro}
+          onChange={handleChange('pomodoro')}
+        />
+        <Field
+          id="short"
+          label="Short Break"
+          value={values.short}
+          onChange={handleChange('short')}
+        />
+        <Field
+          id="long"
+          label="Long Break"
+          value={values.long}
+          onChange={handleChange('long')}
+        />
+
+        <div className={styles.buttons}>
+          <button type="button" onClick={handleCancel}>
+            Cancel
+          </button>
+          <button className={styles.primary} type="submit">
+            Save
+          </button>
+        </div>
+      </form>
+    </Modal>
+  );
+}
+
+interface FieldProps {
+  id: string;
+  label: string;
+  onChange: (value: number | string) => void;
+  value: number | string;
+}
+
+function Field({ id, label, onChange, value }: FieldProps) {
+  return (
+    <div className={styles.field}>
+      <label className={styles.label} htmlFor={id}>
+        {label} <span>(minutes)</span>
+      </label>
+      <input
+        className={styles.input}
+        max={120}
+        min={1}
+        required
+        type="number"
+        value={typeof value === 'number' ? value / 60 : ''}
+        onChange={e => {
+          onChange(e.target.value === '' ? '' : Number(e.target.value));
+        }}
+      />
+    </div>
+  );
+}

src/components/tools/pomodoro/tabs/index.ts

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+export { Tabs } from './tabs';

src/components/tools/pomodoro/tabs/tabs.module.css

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+.tabs {
+  display: flex;
+  column-gap: 4px;
+  align-items: center;
+  padding: 4px;
+  margin: 8px 0;
+  background-color: var(--color-neutral-50);
+  border: 1px solid var(--color-neutral-200);
+  border-radius: 8px;
+
+  & .tab {
+    display: flex;
+    flex-grow: 1;
+    align-items: center;
+    justify-content: center;
+    height: 45px;
+    font-size: var(--font-sm);
+    color: var(--color-foreground-subtle);
+    cursor: pointer;
+    background-color: transparent;
+    border: 1px solid transparent;
+    border-radius: 4px;
+    outline: none;
+    transition: 0.2s;
+
+    &:focus-visible {
+      outline: 2px solid var(--color-neutral-400);
+      outline-offset: 2px;
+    }
+
+    &.selected {
+      color: var(--color-foreground);
+      background-color: var(--color-neutral-200);
+      border-color: var(--color-neutral-300);
+    }
+
+    &:not(.selected):hover,
+    &:not(.selected):focus-visible {
+      color: var(--color-foreground);
+      background-color: var(--color-neutral-100);
+    }
+  }
+}

src/components/tools/pomodoro/tabs/tabs.tsx

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+import { cn } from '@/helpers/styles';
+
+import styles from './tabs.module.css';
+
+interface TabsProps {
+  onSelect: (id: string) => void;
+  selectedTab: string;
+  tabs: Array<{ id: string; label: string }>;
+}
+
+export function Tabs({ onSelect, selectedTab, tabs }: TabsProps) {
+  return (
+    <div className={styles.tabs}>
+      {tabs.map(tab => (
+        <button
+          className={cn(styles.tab, selectedTab === tab.id && styles.selected)}
+          key={tab.id}
+          onClick={() => onSelect(tab.id)}
+        >
+          {tab.label}
+        </button>
+      ))}
+    </div>
+  );
+}

src/pages/tools/pomodoro.astro

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+---
+import Layout from '@/layouts/layout.astro';
+
+import Donate from '@/components/donate.astro';
+import Hero from '@/components/tools/hero.astro';
+import Footer from '@/components/footer.astro';
+import About from '@/components/tools/about.astro';
+import { Pomodoro as PomodoroTimer } from '@/components/tools/pomodoro';
+---
+
+<Layout title="Pomodoro Timer — Moodist">
+  <Donate />
+  <Hero desc="Super simple pomodoro timer." title="Pomodoro Timer" />
+  <PomodoroTimer client:load />
+  <About
+    text="Experience calm and focus with our simple breathing exercise tool. Designed to guide your breath, it helps reduce stress, enhance relaxation, and improve mindfulness in just a few minutes a day."
+  />
+  <Footer />
+</Layout>