:root {
    --bg-color: #0B0C10;
    --second-bg-color: #1A1A1D;
    --text-color: #C5C6C7;
    --main-color: #00ffcc;
    --main-color-dim: rgba(0, 255, 204, 0.2);
    --heading-color: #ffffff;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
    text-decoration: none;
    scroll-behavior: smooth;
}

html {
    font-size: 62.5%;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.8;
    font-size: 1.6rem;
    overflow-x: hidden;
}

/* -------------------------- */
/* 1. Header / Navbar         */
/* -------------------------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 2.5rem 5%;
    background: rgba(11, 12, 16, 0.85);
    backdrop-filter: blur(12px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    border-bottom: 1px solid var(--main-color-dim);
}

.logo {
    font-size: 2.4rem;
    color: var(--heading-color);
    font-weight: 600;
    letter-spacing: 1px;
}

.logo span {
    color: var(--main-color);
    text-shadow: 0 0 8px var(--main-color);
}

.back-link {
    font-size: 1.6rem;
    color: var(--text-color);
    font-weight: 500;
    transition: 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.back-link:hover {
    color: var(--main-color);
    text-shadow: 0 0 8px var(--main-color);
}

/* -------------------------- */
/* 2. Blog Post Container & Header */
/* -------------------------- */
.blog-post-container {
    max-width: 900px;
    margin: 12rem auto 8rem;
    padding: 0 3rem;
}

.post-header {
    margin-bottom: 5rem;
}

.post-title {
    font-size: 4.8rem;
    color: var(--heading-color);
    margin-bottom: 1.5rem;
    line-height: 1.2;
    font-weight: 700;
}

.post-meta {
    font-size: 1.4rem;
    color: #888;
    margin-bottom: 4rem;
    letter-spacing: 0.5px;
}

.post-hero-image {
    width: 100%;
    height: 400px;
    background-color: var(--second-bg-color);
    background-image:
        linear-gradient(rgba(102, 252, 241, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(102, 252, 241, 0.05) 1px, transparent 1px);
    background-size: 40px 40px;
    border: 1px solid var(--main-color-dim);
    border-radius: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
    position: relative;
    overflow: hidden;
}

.post-hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: 0.5s ease;
}

.post-hero-image:hover img {
    transform: scale(1.05);
}

.post-hero-image i {
    font-size: 10rem;
    color: var(--main-color);
    opacity: 0.8;
    filter: drop-shadow(0 0 20px var(--main-color));
}

/* -------------------------- */
/* 3. Content Area            */
/* -------------------------- */
.post-content {
    font-size: 1.8rem;
    color: var(--text-color);
    font-weight: 300;
}

.post-content p {
    margin-bottom: 2.5rem;
    text-align: justify;
}

.post-content h2 {
    font-size: 3rem;
    color: var(--heading-color);
    margin: 5rem 0 2.5rem;
    font-weight: 600;
}

.post-content strong {
    color: var(--heading-color);
    font-weight: 600;
}

/* Bullet Points */
.post-content ul {
    margin-bottom: 3rem;
    padding-left: 2rem;
}

.post-content li {
    margin-bottom: 1.2rem;
    position: relative;
    list-style: none;
}

.post-content li::before {
    content: "•";
    color: var(--main-color);
    font-size: 2.5rem;
    position: absolute;
    left: -2.5rem;
    top: -5px;
    text-shadow: 0 0 8px var(--main-color);
}

/* Code Block */
.code-block {
    background-color: #050505;
    border: 1px solid #222;
    border-left: 4px solid var(--main-color);
    border-radius: 1rem;
    padding: 2.5rem;
    margin: 4rem 0;
    overflow-x: auto;
    position: relative;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.8);
}

.code-header {
    position: absolute;
    top: 0;
    right: 2.5rem;
    background: #2A2A2A;
    color: #A0A0A0;
    padding: 0.4rem 1.2rem;
    font-size: 1.2rem;
    border-bottom-left-radius: 0.8rem;
    border-bottom-right-radius: 0.8rem;
    font-family: monospace;
    letter-spacing: 1px;
}

.code-block code {
    font-family: 'Fira Code', 'Courier New', Courier, monospace;
    font-size: 1.5rem;
    color: #66FCF1;
    white-space: pre;
    line-height: 1.5;
    text-shadow: 0 0 2px rgba(102, 252, 241, 0.4);
}

/* -------------------------- */
/* 4. Footer & Button         */
/* -------------------------- */
.post-footer {
    margin-top: 8rem;
    padding-top: 4rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    text-align: center;
}

.btn-back {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 1.4rem 3.5rem;
    background-color: var(--second-bg-color);
    color: var(--main-color);
    border: 2px solid var(--main-color);
    border-radius: 5rem;
    font-size: 1.6rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease-in-out;
    box-shadow: 0 0 15px transparent;
}

.btn-back:hover {
    box-shadow: 0 0 25px var(--main-color);
    transform: translateY(-4px);
    background-color: var(--bg-color);
}

.btn-back i {
    font-size: 2.4rem;
    position: relative;
    top: 1px;
    transition: 0.3s transform;
}

.btn-back:hover i {
    transform: translateX(-5px);
}

/* Responsive Elements */
@media (max-width: 768px) {
    .post-title {
        font-size: 3.2rem;
    }

    .post-content h2 {
        font-size: 2.4rem;
    }

    .post-hero-image {
        height: 250px;
    }

    .post-hero-image i {
        font-size: 6rem;
    }

    .post-content {
        font-size: 1.6rem;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 2rem 5%;
    }

    .logo {
        font-size: 2rem;
    }

    .back-link {
        font-size: 1.4rem;
    }

    .post-title {
        font-size: 2.6rem;
    }

    .blog-post-container {
        padding: 0 1.5rem;
        margin-top: 10rem;
    }
}