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

/* Importing Fonts */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600&family=Roboto:wght@400;700&display=swap');

/* Root Variables */
:root {
    --primary-color: #0A2540;
    --accent-color: #FFD700;
    --secondary-accent: #FF9900;
    --background-gradient: radial-gradient(circle, rgb(255, 87, 34), transparent);
    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Roboto', sans-serif;
    --transition-speed: 0.3s;
    --section-padding: 60px 20px;
}

/* Body Styling */
body {
    font-family: var(--font-primary);
    color: #ffffff;
    background: linear-gradient(135deg, #0A2540, #1E3A5F);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Header Styling */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 37, 64, 0.9);
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,0.3);
}

header .logo {
    font-size: 1.5em;
    font-weight: bold;
    color: var(--accent-color);
}

nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

nav ul li a {
    text-decoration: none;
    color: #ffffff;
    font-weight: 500;
    transition: color var(--transition-speed);
}

nav ul li a:hover {
    color: var(--secondary-accent);
}

/* Section Styling */
section {
    min-height: 100vh;
    padding: var(--section-padding);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: linear-gradient(135deg, rgba(10, 37, 64, 0.8), rgba(30, 58, 95, 0.8));
    position: relative;
}

section:nth-child(even) {
    background: linear-gradient(135deg, rgba(255, 153, 0, 0.8), rgba(255, 215, 0, 0.8));
    color: #000000;
}

section h2 {
    font-family: var(--font-secondary);
    font-size: 2.5em;
    margin-bottom: 20px;
    color: var(--accent-color);
    animation: fadeIn 1s ease forwards;
}

section p {
    max-width: 800px;
    margin-bottom: 20px;
    font-size: 1.1em;
}

section ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
}

section ul li {
    background: rgba(255, 255, 255, 0.1);
    padding: 10px 20px;
    border-radius: 10px;
    width: 80%;
    transition: background var(--transition-speed);
}

section ul li:hover {
    background: rgba(255, 255, 255, 0.2);
}

button, .button-primary {
    background-color: var(--primary-color);
    color: #ffffff;
    border: none;
    padding: 15px 30px;
    border-radius: 50px;
    font-size: 1em;
    cursor: pointer;
    transition: background-color var(--transition-speed), color var(--transition-speed);
    font-family: var(--font-secondary);
}

button:hover, .button-primary:hover {
    background-color: var(--accent-color);
    color: #000000;
}

/* Image Styling */
img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    margin: 20px 0;
}

/* Footer Styling */
footer {
    background: var(--primary-color);
    color: #ffffff;
    text-align: center;
    padding: 20px;
    position: relative;
}

footer a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-speed);
}

footer a:hover {
    color: var(--secondary-accent);
}

/* Animation Keyframes */
@keyframes fadeIn {
    0% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 1; transform: translateY(0); }
}

@keyframes auroraMove {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.aurora-effect {
    background: var(--background-gradient);
    animation: auroraMove 15s linear infinite;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

/* Code Block Styling */
pre {
    background: rgba(0, 0, 0, 0.7);
    padding: 15px;
    border-radius: 10px;
    overflow-x: auto;
    max-width: 90%;
    margin: 20px auto;
}

code {
    font-family: 'Roboto', monospace;
    color: #FFD700;
    font-size: 1em;
}

/* Article Styling */
article {
    background: rgba(255, 255, 255, 0.1);
    padding: 40px;
    border-radius: 15px;
    max-width: 1000px;
    margin: 40px auto;
}

article h2, article h3, article h4 {
    color: var(--accent-color);
    margin-bottom: 15px;
}

article p {
    color: #ffffff;
    margin-bottom: 15px;
    line-height: 1.8;
}

article ul {
    list-style: disc inside;
}

article table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

article table, table th, table td {
    border: 1px solid #ffffff;
}

article th, table td {
    padding: 10px;
    text-align: left;
}

article th {
    background-color: var(--secondary-accent);
    color: #000000;
}

@media (max-width: 1440px) {
    header {
        padding: 15px 30px;
    }

    section {
        padding: 50px 15px;
    }

    section h2 {
        font-size: 2.2em;
    }

    button, .button-primary {
        padding: 12px 25px;
    }
}

@media (max-width: 1200px) {
    header .logo {
        font-size: 1.3em;
    }

    nav ul {
        gap: 15px;
    }

    section h2 {
        font-size: 2em;
    }

    article {
        padding: 30px;
    }
}

@media (max-width: 1024px) {
    nav ul li a {
        font-size: 0.95em;
    }

    section h2 {
        font-size: 1.8em;
    }

    pre, code {
        font-size: 0.95em;
    }
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: flex-start;
    }

    nav ul {
        flex-direction: column;
        gap: 10px;
    }

    section {
        padding: 40px 10px;
    }

    section h2 {
        font-size: 1.6em;
    }

    button, .button-primary {
        padding: 10px 20px;
        font-size: 0.9em;
    }

    article {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    header {
        padding: 10px 20px;
    }

    nav ul {
        display: none;
    }

    section h2 {
        font-size: 1.4em;
    }

    button, .button-primary {
        padding: 8px 16px;
        font-size: 0.8em;
    }

    article {
        padding: 15px;
    }
}

@media (max-width: 320px) {
    section {
        padding: 30px 5px;
    }

    section h2 {
        font-size: 1.2em;
    }

    pre, code {
        font-size: 0.85em;
    }
}

/* Responsive Images */
.responsive-img {
    width: 100%;
    height: auto;
    border-radius: 10px;
    transition: transform var(--transition-speed);
}

.responsive-img:hover {
    transform: scale(1.05);
}