/* ============================================================
   DESIGN TOKENS — LIGHT THEME (DEFAULT)
   ============================================================ */
   :root {
    /* Colors */
    --color-primary: #2a9d8f;
    --color-accent: #d62828;
    --color-bg: #f7f7f7;
    --color-surface: #ffffff;
    --color-text: #222;
    --color-text-light: #444;
    --color-border: #e0e0e0;

    /* Typography */
    --font-family-base: "Inter", Helvetica, sans-serif;
    --font-size-xl: clamp(3rem, 10vw, 8rem);
    --font-size-lg: clamp(1.6rem, 5vw, 3rem);
    --font-size-md: clamp(1rem, 2.5vw, 1.2rem);
    --font-size-sm: clamp(0.9rem, 2vw, 1rem);
    --font-size-button: clamp(1.1rem, 2vw, 1.6rem);

    /* Spacing */
    --space-xs: 0.4rem;
    --space-sm: 0.8rem;
    --space-md: 1.2rem;
    --space-lg: 2rem;
    --space-xl: 3rem;

    /* Radii */
    --radius-md: 14px;

    /* Shadows */
    --shadow-soft: 0 4px 12px rgba(0,0,0,0.08);

    /* Component Tokens */
    --button-padding: 0.9rem 1.8rem;

    /* Breakpoints */
    --bp-sm: 500px;
    --bp-md: 650px;
    --bp-lg: 900px;
    --bp-xl: 1200px;
}

/* ============================================================
   GLOBAL STYLES
   ============================================================ */
body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-family-base);
    margin: 0;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: var(--color-text);
}

main {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--color-surface);
    padding: var(--space-sm) var(--space-lg);
    box-shadow: var(--shadow-soft);
    position: sticky;
    top: 0;
    z-index: 10;
}

article {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

article > section {
    width: min(900px, 90%);
    padding: var(--space-lg);
}

/* ============================================================
   BRANDING
   ============================================================ */
.brand {
    display: flex;
    align-items: center;
    gap: 18px;
}

.brand img {
    width: clamp(50px, 12vw, 80px);
    height: auto;
}

h1 {
    color: white;
    background-color: var(--color-accent);
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    border-radius: var(--radius-md);
    margin: 0;
    padding: var(--space-sm) var(--space-md);
    letter-spacing: 1px;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
nav {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

nav a {
    color: var(--color-text);
    font-size: var(--font-size-md);
    font-weight: 600;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    transition: 0.25s ease;
}

nav a:hover {
    background-color: var(--color-primary);
    color: white;
}

/* ============================================================
   WORD DISPLAY BOX
   ============================================================ */
.word-box {
    background-color: var(--color-surface);
    height: clamp(18rem, 40vw, 26rem);
    padding: var(--space-lg) var(--space-sm);
    text-align: center;
    margin-bottom: var(--space-lg);

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;

    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
}

#word {
    font-size: var(--font-size-xl);
    margin: 0;
    line-height: 1;
    cursor: pointer;
    font-weight: 700;
}

#finglishWord {
    font-size: var(--font-size-lg);
    margin-top: var(--space-sm);
    line-height: 1;
    color: var(--color-text-light);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    color: white;
    background-color: var(--color-primary);
    font-size: var(--font-size-button);
    font-weight: 600;
    padding: var(--button-padding);
    border-radius: var(--radius-md);
    cursor: pointer;
    width: fit-content;
    border: none;
    transition: 0.25s ease;
    box-shadow: var(--shadow-soft);
}

.btn:hover {
    background-color: var(--color-accent);
    transform: translateY(-3px);
}

.center {
    margin: 0 auto;
    text-align: center;
}

/* Ensure buttons always stay on one row */
.finglish-row {
    display: flex;
    flex-wrap: nowrap;
    justify-content: center;
    align-items: center;
    gap: var(--space-md);
}

.finglish-row .btn {
    white-space: nowrap;
}


/* ============================================================
   TOPICS GRID
   ============================================================ */
.topics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 25px;
    padding: 30px;
    width:100%;
}

.topic-header {
    grid-column: 1 / -1;
    margin-top: 2.5rem;
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 700;
    padding-bottom: 0.4rem;
    border-bottom: 4px solid var(--color-primary);
    width: fit-content;
    letter-spacing: 0.5px;
}

.topic-box {
    background: var(--color-surface);
    border: 2px solid var(--color-primary);
    padding: 25px;
    border-radius: var(--radius-md);
    transition: 0.25s ease;
    cursor: pointer;
    box-shadow: var(--shadow-soft);
}

.topic-box:hover {
    background: #f0f0f0;
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: 3rem;
    align-items: center;
    margin-top: 2rem;
}

.hero-text h2 {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    margin: 0 0 1rem 0;
}

.hero-text p {
    font-size: var(--font-size-md);
    line-height: 1.7;
    color: var(--color-text-light);
    max-width: 34rem;
}

.hero-actions {
    margin-top: 2rem;
}

.hero-image img {
    width: 100%;
    max-width: 260px;
    display: block;
    margin: 0 auto;
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */
.about-section {
    margin-top: 4rem;
    text-align: center;
}

.about-section h3 {
    font-size: clamp(1.4rem, 3vw, 1.8rem);
    margin-bottom: 1rem;
}

.about-section p {
    font-size: var(--font-size-md);
    color: var(--color-text-light);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ============================================================
   VALUES SECTION
   ============================================================ */
.values {
    margin-top: 3rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.8rem;
}

.value-box {
    background: var(--color-surface);
    padding: 1.8rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
    text-align: center;
}

.value-box h4 {
    margin-top: 0;
    font-size: clamp(1.1rem, 2.5vw, 1.3rem);
    margin-bottom: 0.6rem;
}

.value-box p {
    margin: 0;
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

/* ============================================================
   RESPONSIVE BREAKPOINTS
   ============================================================ */

/* Global spacing */
@media (max-width: 600px) {
    body {
        line-height: 1.55;
        padding: 0 0.4rem;
    }

    main {
        gap: 1.2rem;
    }
}

/* Header & Navigation */
@media (max-width: 650px) {
    header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.8rem;
        padding: 1rem 1.4rem;
    }

    nav {
        width: 100%;
        flex-wrap: wrap;
        justify-content: flex-start;
        gap: 0.6rem;
    }

    nav a {
        padding: 0.5rem 0.9rem;
        font-size: var(--font-size-md);
    }
}

@media (max-width: 400px) {
    nav {
        justify-content: center;
    }
}

/* Hero Section */
@media (max-width: 900px) {
    .hero {
        gap: 2rem;
    }
}

@media (max-width: 750px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text p {
        margin: 0 auto;
    }

    .hero-image {
        order: -1;
    }

    .hero-image img {
        max-width: 180px;
    }
}

/* Word Box */
@media (max-width: 600px) {
    .word-box {
        padding: 2.4rem 1rem;
        height: auto;
    }

    #word {
        font-size: clamp(2.2rem, 14vw, 3.6rem);
    }

    #finglishWord {
        font-size: clamp(1.1rem, 6vw, 1.8rem);
    }
}

/* Grid Sections */
@media (max-width: 600px) {
    .topics-grid,
    .values {
        padding: 20px;
        gap: 1.2rem;
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    }

    .topic-box,
    .value-box {
        padding: 1.2rem;
    }
}

@media (max-width: 400px) {
    .topics-grid,
    .values {
        padding: 12px;
        gap: 0.8rem;
    }
}

/* Article spacing */
@media (max-width: 550px) {
    article > section {
        padding: 1rem;
    }
}