/* QSBitcoin - Quantum-Safe Bitcoin CSS */

/* Base Styles */
:root {
    --primary-color: #f7931a; /* Bitcoin orange */
    --secondary-color: #4a90e2; /* Quantum blue */
    --dark-bg: #13151a;
    --light-bg: #f8f9fa;
    --text-color: #333;
    --light-text: #fff;
    --border-color: #e0e0e0;
    --hover-color: #0056b3;
    --footer-bg: #2c3e50;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-bg);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

img {
    max-width: 100%;
    height: auto;
}

h1, h2, h3, h4, h5, h6 {
    margin-bottom: 1rem;
    line-height: 1.2;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
}

ul {
    list-style: none;
}

section {
    padding: 60px 0;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.primary {
    background-color: var(--primary-color);
    color: var(--light-text);
}

.primary:hover {
    background-color: #e68a00;
    color: var(--light-text);
}

.secondary {
    background-color: var(--secondary-color);
    color: var(--light-text);
}

.secondary:hover {
    background-color: #3a80d2;
    color: var(--light-text);
}

/* Announcement Bar */
.announcement-bar {
    background-color: var(--primary-color);
    color: var(--light-text);
    text-align: center;
    padding: 10px 0;
    font-weight: 600;
}

/* Header */
header {
    background-color: var(--light-bg);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo a {
    display: flex;
    align-items: center;
    color: var(--text-color);
    font-weight: 700;
    font-size: 1.5rem;
}

.logo-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    font-size: 24px;
    margin-right: 10px;
}

.logo-icon-large {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 120px;
    height: 120px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    font-size: 70px;
    margin: 0 auto;
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 20px;
    position: relative;
}

nav ul li a {
    color: var(--text-color);
    font-weight: 500;
}

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

.dropdown {
    position: relative;
}

.dropdown-toggle::after {
    content: '▼';
    font-size: 0.7em;
    margin-left: 5px;
    vertical-align: middle;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--light-bg);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    min-width: 200px;
    border-radius: 4px;
    display: none;
    z-index: 1001;
}

.dropdown-menu a {
    display: block;
    padding: 10px 15px;
    color: var(--text-color);
}

.dropdown-menu a:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.dropdown:hover .dropdown-menu {
    display: block;
}

.language-selector select {
    padding: 8px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    background-color: var(--light-bg);
    cursor: pointer;
}

/* Hero Section */
.hero {
    padding: 80px 0;
    text-align: center;
}

.hero h1 {
    max-width: 800px;
    margin: 0 auto 30px;
}

.cta-buttons {
    margin-bottom: 20px;
}

.cta-buttons .btn {
    margin: 0 10px;
}

.sub-cta {
    margin-top: 20px;
}

/* Video Section */
.video-section {
    padding: 40px 0;
}

.video-container {
    max-width: 800px;
    margin: 0 auto;
}

.video-placeholder {
    background-color: #000;
    height: 450px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: var(--light-text);
    border-radius: 8px;
    cursor: pointer;
    position: relative;
}

.play-button {
    width: 80px;
    height: 80px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 15px;
}

.play-icon {
    color: white;
    font-size: 30px;
}

/* Network Visualization */
.network-visualization {
    background-color: var(--dark-bg);
    padding: 60px 0;
    position: relative;
    overflow: hidden;
    min-height: 300px;
}

.network-graphic {
    position: relative;
    height: 300px;
}

/* Overview Section */
.overview {
    text-align: center;
    padding-top: 0;
}

.overview.dark {
    background-color: var(--dark-bg);
    color: var(--light-text);
    padding: 60px 0;
}

.audience-cards {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
    flex-wrap: wrap;
}

.card {
    background-color: #1e2430;
    border-radius: 8px;
    padding: 30px;
    width: 30%;
    text-align: center;
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
}

.card .icon {
    margin-bottom: 20px;
    width: 60px;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 20px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    font-size: 30px;
}

.icon-person::before {
    content: "👤";
}

.icon-business::before {
    content: "🏢";
}

.icon-developer::before {
    content: "💻";
}

.card h3 {
    margin-bottom: 15px;
}

.learn-more {
    color: var(--light-text);
    display: inline-block;
    margin-top: 15px;
    font-weight: 500;
}

.learn-more:hover {
    color: var(--primary-color);
}

/* Get Started Section */
.get-started {
    text-align: center;
}

.info-block {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.info-block p {
    text-align: left;
    flex: 1;
    padding-right: 30px;
    font-size: 1.1rem;
}

.QSBitcoin-logo-large {
    flex: 0 0 150px;
}

/* Quantum-Safe Section */
.quantum-safe {
    background-color: #f0f8ff; /* Light blue background */
    padding: 60px 0;
    text-align: center;
}

.features {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
    flex-wrap: wrap;
}

.feature {
    width: 30%;
    padding: 20px;
    border-radius: 8px;
    background-color: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.feature .icon {
    margin-bottom: 20px;
    width: 60px;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 20px;
    border-radius: 50%;
    background-color: var(--secondary-color);
    color: white;
    font-size: 30px;
}

.icon-quantum::before {
    content: "⚛";
}

.icon-security::before {
    content: "🔒";
}

.icon-compatibility::before {
    content: "🔄";
}

.feature h3 {
    margin-bottom: 15px;
    color: var(--secondary-color);
}

/* Benefits Section */
.benefits {
    text-align: center;
    padding: 60px 0;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.benefit {
    text-align: left;
    padding: 20px;
    border-radius: 8px;
    background-color: #f5f5f5;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.benefit h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

/* Footer */
footer {
    background-color: var(--footer-bg);
    color: var(--light-text);
    padding: 60px 0 30px;
}

.footer-columns {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.footer-column {
    width: 22%;
}

.footer-column h4 {
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.footer-column ul li {
    margin-bottom: 10px;
}

.footer-column ul li a {
    color: #b3b3b3;
}

.footer-column ul li a:hover {
    color: var(--light-text);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.social-links a {
    color: #b3b3b3;
    margin-left: 15px;
}

.social-links a:hover {
    color: var(--light-text);
}

/* Cookie Notice */
.cookie-notice {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    color: var(--light-text);
    padding: 15px 0;
    z-index: 9999;
    display: none;
}

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

.cookie-notice p {
    margin-bottom: 0;
}

.cookie-notice .btn {
    padding: 8px 20px;
    margin-left: 20px;
}

/* Responsive Styles */
@media (max-width: 992px) {
    .card, .feature {
        width: 45%;
        margin-bottom: 30px;
    }
    
    .footer-column {
        width: 45%;
        margin-bottom: 30px;
    }
    
    .info-block {
        flex-direction: column;
    }
    
    .info-block p {
        padding-right: 0;
        margin-bottom: 30px;
    }
}

@media (max-width: 768px) {
    header .container {
        flex-direction: column;
    }
    
    nav ul {
        margin-top: 20px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    nav ul li {
        margin: 0 10px 10px;
    }
    
    .language-selector {
        margin-top: 20px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .cta-buttons .btn {
        display: block;
        margin: 10px auto;
        width: 80%;
    }
    
    .card, .feature {
        width: 100%;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-column {
        width: 100%;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .social-links {
        margin-top: 20px;
    }
    
    .social-links a {
        margin: 0 10px;
    }
    
    .cookie-notice .container {
        flex-direction: column;
    }
    
    .cookie-notice .btn {
        margin: 15px 0 0;
    }
}