/* ── GLOBAL SIZE VARIABLES ───────────────────────────────────────────────── */
:root {
    --base-font: 18px;
    --scale: 1.2;
    --heading-scale: 2.4;
    --card-width: 360px;
    --card-radius: 24px;
    --gap: 2rem;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    width: 100%;
    overflow-x: hidden;
}

/* Remove default margin, padding, and border */



body {
  
    font-size: var(--base-font);
    color: #202124;
    background: #fff;
    line-height: 1.6;
}


header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 24px;
    background: white;
    border-bottom: 1px solid #ddd;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo img {
    height: 24px;
}

.blue-banner {
    background: rgb(246, 176, 47);
    color: white;
    font-size: 18px;
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    /* key part to push nav to the right */
    flex-wrap: wrap;
    /* optional: keeps it responsive */
}

.blue-banner .nav-links {
    display: flex;
    gap: 20px;
}

.blue-banner .nav-links a {
    color: white;
    text-decoration: none;
    font-size: 14px;
}
.nav-links a {
    color: white;
    /* default color */
    text-decoration: none;
   
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #333333;
    /* charcoal dark */
}
.nav-links a.active {
    color: #333333;
    /* always charcoal for active link */
}


.sub-banner {
    background: #e8f0fe;
    padding: 12px 24px;
    font-size: 14px;
}

.sub-banner a {
    color: orange ;
    text-decoration: none;
}



@media (max-width: 1028px) {
    .blue-banner {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
        padding: 16px;
    }

    .blue-banner .nav-links {
        flex-wrap: wrap;
        gap: 12px;
        width: 100%;
        justify-content: flex-start;
    }

    .blue-banner .nav-links a {
        font-size: 13px;
    }

    header {
        padding: 10px 16px;
        flex-wrap: wrap;
    }

    .logo img {
        height: 22px;
    }

    .sub-banner {
        font-size: 13px;
        padding: 10px 16px;
    }
}



.contain {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--gap);
}

.frontend-title {
    text-align: center;
    font-size: 40px;
    font-weight: bold;
    margin-top: 40px;
    margin-bottom: 70px;
    color: #222;
}
@media (max-width: 768px) {
    .frontend-title {
        font-size: 32px;
        margin-top: 50px;
        margin-bottom: 20px;
    }
}

@media (max-width: 480px) {
    .frontend-title {
        font-size: 30px;
        margin-top: 100px;
        margin-bottom: 20px;
    }
}

.framework-title {
    margin-top: 100px;
    text-align: center;
    font-size: 35px;
    font-weight: bold;
    color: #222;
}

@media (max-width: 768px) {
    .framework-title {
        font-size: 28px;
        margin-top: 80px;
    }
}

@media (max-width: 480px) {
    .framework-title {
        font-size: 22px;
        margin-top: 60px;
    }
}

/* ── HEADER ────────────────────────────────────────────────────────────── */
.main-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--gap);
    margin-bottom: calc(var(--gap) * 1.5);
}

.text-content {
    flex: 1 1 500px;
}

.text-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    font-family: 'Georgia', serif;
}

.text-content p {
    font-size: calc(var(--base-font) * var(--scale) / 1.1);
    max-width: 600px;
    color: #3c4043;

}

.header-image {
    flex: 1 1 450px;
    text-align: right;
}

.header-image img {
    max-width: 140%;
    height: auto;
    margin-left: 50px;
    /* Move it slightly to the right */
    border-radius: 15px;
    /* Curved borders */
}

@media (max-width: 500px) {
    .blue-banner {
        display: none;
    }
}

@media (max-width: 1028px) {
    .main-header {
        flex-direction: column;
        align-items: flex-start;
        /* Aligns content to the left */
        text-align: left;
    }

    .text-content,
    .header-image {
        flex: 1 1 100%;
        text-align: left;
    }

    .text-content h1 {
        font-size: 2.5rem;
    }

    .text-content p {
        font-size: calc(var(--base-font) * var(--scale) / 1.2);
        margin: 0;
    }

    .header-image img {
        max-width: 80%;
    }
}

@media (max-width: 770px) {
    .main-header {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
        gap: calc(var(--gap) / 1.5);
    }

    .text-content,
    .header-image {
        flex: 1 1 100%;
        text-align: left;
    }

    .text-content h1 {
        font-size: 2.5rem;
        line-height: 1.3;
    }

    .text-content p {
        font-size: calc(var(--base-font) * var(--scale) / 1.5);
        margin: 0;
    }

    .header-image img {
        max-width: 100%;
        margin-top: 1.5rem;
    }
}

@media (max-width: 450px) {
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    html,
    body {
        margin: 0;
        padding: 0;
        width: 100%;
        overflow-x: hidden;
    }

    .contain,
    .main-header,
    .text-content,
    .header-image {
        width: 100vw;
        /* Full viewport width */
        max-width: 100vw;
        margin: 0;
        padding: 0;
    }

    .main-header {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
        gap: 0.5rem;
        margin-top: -1rem;
    }

    .text-content h1 {
        font-size: 1.8rem;
        line-height: 1.3;
        margin: 0 0 1rem 0;
        padding: 0 0.5rem;
        /* optional tiny side breathing room */
    }

    .text-content p {
        font-size: calc(var(--base-font) * var(--scale) / 1.4);
        margin: 0;
        padding: 0 0.5rem;
        /* optional tiny side breathing room */
        width: 100%;
        max-width: 100%;
    }

    .header-image img {
        max-width: 100%;
        width: 100%;
        display: block;
    }
}

@media (max-width: 380px) {
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    html,
    body {
        margin: 0;
        padding: 0;
        width: 100%;
        overflow-x: hidden;
    }

    .contain,
    .main-header,
    .text-content,
    .header-image {
        width: 100vw;
        /* Full viewport width */
        max-width: 100vw;
        margin: 0;
        padding: 0;
    }

    .main-header {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
        gap: 0.5rem;
        margin-top: -1rem;
    }

    .text-content h1 {
        font-size: 1.6rem;
        /* Slightly smaller for smaller screens */
        line-height: 1.3;
        margin: 0 0 1rem 0;
        padding: 0 0.5rem;
        /* Optional tiny side breathing room */
    }

    .text-content p {
        font-size: calc(var(--base-font) * var(--scale) / 1.6);
        /* Adjust font size */
        margin: 0;
        padding: 0 0.5rem;
        /* Optional tiny side breathing room */
        width: 100%;
        max-width: 100%;
    }

    .header-image img {
        max-width: 100%;
        width: 100%;
        display: block;
    }
}

/* ── CARDS GRID ───────────────────────────────────────────────────────── */
.cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, auto);
    gap: var(--gap);
    justify-items: center;
}

/* ── COURSE CARD ──────────────────────────────────────────────────────── */
.course-card {
    background: #fff;
    border-radius: var(--card-radius);
    width: var(--card-width);
    padding: 1.2rem 1.2rem;
    /* Reduce vertical space */
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.10);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    transition: box-shadow 0.3s ease;
}

.course-card:hover {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

.course-image {
    /* Removed background color */
    padding: 0;
    border-radius: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: var(--gap);
}

.course-image img {
    width: 260px;
    height: 150px;
    border-radius: 10px;
    /* adjust the value for more or less curve */
}

.course-label {
    font-size: 0.9rem;
    font-weight: 500;
    color: #5f6368;
    margin-bottom: 0.25rem;
}

.course-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #202124;
    margin-bottom: 0.75rem;
}

.course-desc {
    font-size: 1rem;
    color: #3c4043;
    margin-bottom: calc(var(--gap) * 0.8);
}

/* ── BUTTON ───────────────────────────────────────────────────────────── */
.start-course-btn {
    align-self: center;
    font-size: 1rem;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: 999px;
    border: 2px solid rgb(246, 176, 47);
    /* Orange border */
    background: #fff;
    color: rgb(246, 176, 47);
    /* Orange text */
    cursor: pointer;
    transition: background 0.3s, color 0.3s;
}

.start-course-btn:hover {
    background: #f57c00;
    /* Orange background on hover */
    color: #fff;
    /* White text on hover */
}




/* ── RESPONSIVE ───────────────────────────────────────────────────────── */
@media (max-width: 1100px) {
    .main-header {
        flex-direction: column-reverse;
        text-align: center;
    }

    .header-image {
        text-align: center;
    }
}


@media (max-width: 1028px) {
    .cards {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1.5rem;
        justify-items: center;
    }

    .course-card {
        width: 100%;
        max-width: 400px;
        /* Prevent cards from becoming too wide */
        padding: 1rem;
    }

    .course-image img {
        width: 100%;
        height: auto;
        border-radius: 10px;
    }

    .course-title {
        font-size: 1.5rem;
    }

    .course-desc {
        font-size: 1.05rem;
    }

    .start-course-btn {
        font-size: 0.95rem;
        padding: 0.65rem 1.25rem;
    }
}

@media (max-width: 450px) {
    .cards {
        display: grid;
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 0 1rem;
        /* Add horizontal padding to avoid edge-to-edge layout */
        justify-items: center;
    }

    .course-card {
        width: 100%;
        max-width: 350px;
        padding: 0.9rem;
    }

    .course-image img {
        width: 100%;
        height: auto;
        border-radius: 8px;
    }

    .course-title {
        font-size: 1.5em;
    }

    .course-desc {
        font-size: 1.0rem;
    }

    .start-course-btn {
        font-size: 0.9rem;
        padding: 0.6rem 1rem;
    }
}

@media (max-width: 380px) {
    .cards {
        display: grid;
        grid-template-columns: 1fr;
        gap: 0.8rem;
        padding: 0 0.75rem;
        justify-items: center;
    }

    .course-card {
        width: 100%;
        max-width: 320px;
        padding: 0.75rem;
    }

    .course-image img {
        width: 100%;
        height: auto;
        border-radius: 6px;
    }

    .course-title {
        font-size: 1.2rem;
    }

    .course-desc {
        font-size: 0.90rem;
    }

    .start-course-btn {
        font-size: 0.85rem;
        padding: 0.5rem 0.9rem;
    }
}