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

/* Fonts */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;700&display=swap');

body {
    font-family: 'Montserrat', sans-serif;
    line-height: 1.6;
    color: #FFFFFF;
    background: linear-gradient(135deg, #0A2463, #4C387B);
    background-attachment: fixed;
    background-size: cover;
    overflow-x: hidden;
}

/* Container */
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
}

/* Navigation */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    position: fixed;
    width: 100%;
    top: 0;
    background: rgba(10, 36, 99, 0.9);
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.navbar a {
    color: #FFFFFF;
    text-decoration: none;
    margin: 0 15px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.navbar a:hover {
    color: #FFA500;
}

.nav-icons {
    display: flex;
    align-items: center;
}

.nav-icons img {
    width: 24px;
    height: 24px;
    margin-left: 10px;
    transition: transform 0.3s ease;
}

.nav-icons img:hover {
    transform: scale(1.2);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: rgba(10, 36, 99, 0.8);
    backdrop-filter: blur(5px);
    position: relative;
}

.hero::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://images.gptkong.com/demo/sample1.png') no-repeat center center;
    background-size: cover;
    opacity: 0.2;
    z-index: -1;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    color: #FFA500;
    text-shadow: 0 0 5px rgba(255,165,0,0.7);
    animation: fadeInDown 1s ease forwards;
}

.hero p {
    font-size: 1.2rem;
    color: #FFFFFF;
    animation: fadeInUp 1s ease forwards;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Sections */
section {
    padding: 80px 0;
    background: rgba(76, 56, 123, 0.8);
    margin-top: 100px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    backdrop-filter: blur(10px);
    position: relative;
}

section:nth-child(even) {
    background: rgba(10, 36, 99, 0.8);
}

.section-title {
    font-size: 2rem;
    margin-bottom: 20px;
    color: #FFA500;
    position: relative;
}

.section-title::after {
    content: "";
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, #FFA500, #FFFFFF);
    position: absolute;
    bottom: -10px;
    left: 0;
    border-radius: 2px;
}

.section-content {
    font-size: 1rem;
    color: #FFFFFF;
    max-width: 800px;
    margin: 0 auto;
}

pre {
    background: rgba(255, 165, 0, 0.1);
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    margin: 20px 0;
    color: #FFFFFF;
}

code {
    font-family: 'Courier New', Courier, monospace;
}

/* Images */
img.decorative {
    width: 100%;
    max-width: 320px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.5);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin: 20px 0;
}

img.decorative:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 20px rgba(0,0,0,0.7);
}

/* Navigation Links */
.nav-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 40px;
}

.nav-links a {
    color: #FFFFFF;
    text-decoration: none;
    margin: 10px 15px;
    font-size: 1rem;
    padding: 10px 20px;
    border: 2px solid #FFA500;
    border-radius: 5px;
    transition: background 0.3s ease, color 0.3s ease;
}

.nav-links a:hover {
    background: #FFA500;
    color: #0A2463;
}

/* Footer */
.footer {
    text-align: center;
    padding: 40px 0;
    background: rgba(10, 36, 99, 0.9);
    color: #FFFFFF;
}

.footer p {
    font-size: 0.9rem;
}

/* Tooltip */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    background: #FFA500;
    color: #0A2463;
    padding: 5px 10px;
    border-radius: 5px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    font-size: 0.8rem;
}

.tooltip:hover::after {
    opacity: 1;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
    }

    .nav-links {
        flex-direction: column;
    }

    .nav-links a {
        margin: 5px 0;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    section {
        padding: 60px 20px;
    }

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

    .section-content {
        font-size: 0.9rem;
    }
}

/* Buttons */
.button {
    display: inline-block;
    padding: 10px 20px;
    background: #FFA500;
    color: #0A2463;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
    transition: background 0.3s ease, transform 0.3s ease;
    text-decoration: none;
}

.button:hover {
    background: #FF8C00;
    transform: scale(1.05);
}

/* Decorative Lines */
.decorative-line {
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, #FFA500, #FFFFFF);
    margin: 40px 0;
    border-radius: 1px;
}

/* Highlighted Text */
.highlighted-text {
    color: #FFA500;
    text-shadow: 0 0 2px rgba(255,165,0,0.7);
}

/* Tooltip on links */
a[rel="nofollow"].tooltip-link::after {
    content: "nofollow";
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: #FFFFFF;
    color: #0A2463;
    padding: 3px 6px;
    border-radius: 3px;
    font-size: 0.7rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

a[rel="nofollow"].tooltip-link:hover::after {
    opacity: 1;
}

/* Message */
.message {
    text-align: center;
    font-size: 1.2rem;
    color: #FFA500;
    margin: 40px 0;
    animation: fadeIn 2s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}