@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@500&family=Inter:wght@400;600&display=swap');

:root {
    --bg-color: #111111;
    --surface-color: #1d1d1d;
    --primary-color: #00ff7f; /* SpringGreen */
    --text-color: #cccccc;
    --heading-color: #ffffff;
    --border-color: #333333;
    --container-width: 980px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.8;
    font-size: 17px;
}

h1, h2, .logo {
    font-family: 'Fira Code', monospace;
    color: var(--heading-color);
    font-weight: 500;
}

h1 {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
    text-shadow: 0 0 10px rgba(0, 255, 127, 0.2);
}

h2 {
    font-size: 2.2rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 1rem;
}

p {
    margin-bottom: 1.5rem;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: all 0.2s ease-in-out;
}

a:hover {
    filter: brightness(1.2);
    text-decoration: underline;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

header {
    background-color: rgba(17, 17, 17, 0.7);
    backdrop-filter: blur(12px);
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.7rem;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 2.5rem;
}

nav a {
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-color);
    text-decoration: none;
}

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

main section {
    padding: 5rem 0;
}

#main {
    text-align: center;
    padding: 6rem 0;
    background: radial-gradient(circle, var(--surface-color) 0%, var(--bg-color) 70%);
}

.btn {
    display: inline-block;
    margin-top: 2rem;
    padding: 1rem 3rem;
    font-family: 'Fira Code', monospace;
    font-size: 1.1rem;
    color: var(--primary-color);
    background-color: transparent;
    border: 2px solid var(--primary-color);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn:hover {
    background-color: var(--primary-color);
    color: var(--bg-color);
    box-shadow: 0 0 20px rgba(0, 255, 127, 0.4);
    transform: translateY(-3px);
}

ul {
    list-style-type: none;
    padding-left: 0;
}

ul li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: 1rem;
}

ul li::before {
    content: '»';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--primary-color);
    font-weight: 600;
}

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

#faq details {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-bottom: 1rem;
    transition: background-color 0.2s ease;
}

#faq details[open] {
    background-color: #252525;
}

#faq summary {
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 1.1rem;
    padding: 1.2rem;
    cursor: pointer;
    list-style: none;
    color: var(--heading-color);
    position: relative;
}

#faq summary::after {
    content: '+';
    font-family: 'Fira Code', monospace;
    color: var(--primary-color);
    position: absolute;
    right: 1.2rem;
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

#faq details[open] summary::after {
    content: '-';
    transform: rotate(180deg);
}

#faq details p {
    padding: 0 1.2rem 1.2rem 1.2rem;
    margin: 0;
    border-top: 1px solid var(--border-color);
    padding-top: 1.2rem;
}


footer {
    text-align: center;
    padding: 3rem 0;
    font-size: 0.9rem;
    color: #888;
    border-top: 1px solid var(--border-color);
}