/* CSS Variables for consistent theming */
:root {
    --primary-color: #0078d4;
    --primary-dark: #005a9e;
    --secondary-color: #f7fafd;
    --accent-color: #ff6b35;
    --success-color: #28a745;
    --error-color: #dc3545;
    --text-color: #222;
    --text-light: #666;
    --text-lighter: #888;
    --border-color: #e1e5e9;
    --shadow-light: 0 2px 8px rgba(0,0,0,0.1);
    --shadow-medium: 0 4px 20px rgba(0,0,0,0.15);
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --transition: all 0.3s ease;
}

/* Reset and base styles */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    margin: 0 0 1rem 0;
    font-weight: 600;
    line-height: 1.2;
}

p {
    margin: 0 0 1rem 0;
}

/* Header */
.headbar {
    display: flex;
    align-items: center;
    background: #fff;
    padding: 0 24px;
    box-shadow: var(--shadow-light);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

.headbar-logo {
    height: 60px;
    margin-right: 18px;
    transition: var(--transition);
}

.headbar-logo:hover {
    transform: scale(1.05);
}

.headbar-slogan {
    font-size: 1.1rem;
    color: var(--text-color);
    font-weight: 500;
    letter-spacing: 0.02em;
}

/* Hero Section */
.hero-section {
    width: 100%;
    min-height: 500px;
    background: url('img/tanker captains dilemma 3.442Z.webp') center center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    /* background: linear-gradient(135deg, rgba(0,120,212,0.7) 0%, rgba(0,90,158,0.5) 100%); */
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 24px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    color: white;
    margin-bottom: 24px;
    text-shadow: 0 4px 12px rgba(0,0,0,0.3);
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.hero-desc {
    font-size: 1.4rem;
    color: rgba(255,255,255,0.95);
    margin-bottom: 32px;
    text-shadow: 0 2px 8px rgba(0,0,0,0.4);
    line-height: 1.5;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 32px;
}

.hero-btn {
    display: inline-block;
    padding: 16px 32px;
    background: rgba(255,255,255,0.95);
    color: #0078d4;
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: 8px;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
    backdrop-filter: blur(10px);
}

.hero-btn:hover {
    background: white;
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0,0,0,0.3);
}

/* How It Works Section */
.how-section {
    padding: 80px 0;
    background: var(--secondary-color);
}

.how-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.how-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 3rem;
}

.how-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.how-step {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.how-step::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

.how-step:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.how-step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.how-step-head {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.how-step-desc {
    color: var(--text-light);
    line-height: 1.6;
}

/* Digital Twin Section */
.twin-section {
    padding: 80px 0;
    background: white;
}

.twin-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.twin-image-wrap {
    display: flex;
    justify-content: center;
    align-items: center;
}

.twin-image {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-medium);
    transition: var(--transition);
}

.twin-image:hover {
    transform: scale(1.02);
}

.twin-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.twin-desc {
    font-size: 1.1rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* Use Cases Section */
.usecase-section {
    padding: 80px 0;
    background: var(--secondary-color);
}

.usecase-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.usecase-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 3rem;
}

.usecase-list {
    display: flex;
    gap: 2rem;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 20px 0;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
}

.usecase-list::-webkit-scrollbar {
    height: 8px;
}

.usecase-list::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.usecase-list::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

.usecase-list::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

.usecase-item {
    background: white;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-light);
    min-width: 320px;
    width: 320px;
    flex: 0 0 320px;
    flex-shrink: 0;
    transition: var(--transition);
    white-space: normal;
}

.usecase-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.usecase-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: var(--transition);
}

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

.usecase-head {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-color);
    margin: 1.5rem 1.5rem 0.5rem 1.5rem;
}

.usecase-desc {
    color: var(--text-light);
    margin: 0 1.5rem 1.5rem 1.5rem;
    line-height: 1.6;
}

/* Features Roadmap Section */
.features-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8fbff 0%, #e8f4ff 100%);
}

.features-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

.features-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.features-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 4rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 4rem;
}

.features-roadmap {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    position: relative;
}

.features-roadmap::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--success-color) 0%, var(--primary-color) 50%, var(--text-lighter) 100%);
    border-radius: 2px;
    z-index: 1;
    transform: translateY(-50%);
}

.roadmap-item {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    position: relative;
    z-index: 2;
    border-top: 4px solid transparent;
}

.roadmap-item.current {
    border-top-color: var(--success-color);
    box-shadow: 0 8px 32px rgba(40, 167, 69, 0.15);
}

.roadmap-item.upcoming {
    border-top-color: var(--primary-color);
    box-shadow: 0 8px 32px rgba(0, 120, 212, 0.15);
}

.roadmap-item.future {
    border-top-color: var(--text-lighter);
    box-shadow: 0 8px 32px rgba(136, 136, 136, 0.15);
}

.roadmap-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
}

.roadmap-status {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.roadmap-item.current .roadmap-status {
    background: linear-gradient(135deg, var(--success-color), #20c997);
    color: white;
}

.roadmap-item.upcoming .roadmap-status {
    background: linear-gradient(135deg, var(--primary-color), #4dabf7);
    color: white;
}

.roadmap-item.future .roadmap-status {
    background: linear-gradient(135deg, var(--text-lighter), #adb5bd);
    color: white;
}

.roadmap-icon {
    font-size: 1.2rem;
}

.roadmap-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.roadmap-description {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    font-size: 1rem;
}

.roadmap-features {
    list-style: none;
    padding: 0;
    margin: 0;
}

.roadmap-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0;
    color: var(--text-color);
    font-weight: 500;
}

.roadmap-features li::before {
    content: '✓';
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    font-size: 0.8rem;
    font-weight: 700;
    flex-shrink: 0;
}

.roadmap-item.current .roadmap-features li::before {
    background: var(--success-color);
    color: white;
}

.roadmap-item.upcoming .roadmap-features li::before {
    background: var(--primary-color);
    color: white;
}

.roadmap-item.future .roadmap-features li::before {
    background: var(--text-lighter);
    color: white;
}

.roadmap-timeline-dot {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 16px;
    height: 16px;
    border-radius: 50%;
    z-index: 3;
}

.roadmap-item.current .roadmap-timeline-dot {
    background: var(--success-color);
    box-shadow: 0 0 0 4px white, 0 0 0 8px var(--success-color);
}

.roadmap-item.upcoming .roadmap-timeline-dot {
    background: var(--primary-color);
    box-shadow: 0 0 0 4px white, 0 0 0 8px var(--primary-color);
}

.roadmap-item.future .roadmap-timeline-dot {
    background: var(--text-lighter);
    box-shadow: 0 0 0 4px white, 0 0 0 8px var(--text-lighter);
}

/* Demo Section */
.demo-section {
    padding: 80px 0;
    background: white;
}

.demo-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 24px;
}

.demo-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.demo-desc {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 3rem;
}

/* Demo Actions Section */
.demo-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
    padding: 2rem;
    background: var(--secondary-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-light);
}

.demo-web, .demo-download {
    text-align: center;
    padding: 1.5rem;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.demo-web:hover, .demo-download:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.demo-subtitle {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.demo-subdesc {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

/* Download Button */
.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    color: white;
    text-decoration: none;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    margin-bottom: 1rem;
}

.download-btn.primary {
    background: linear-gradient(135deg, var(--primary-color), #4dabf7);
    box-shadow: 0 4px 16px rgba(0, 120, 212, 0.3);
}

.download-btn.primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), #339af0);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0, 120, 212, 0.4);
}

.download-btn.secondary {
    background: linear-gradient(135deg, var(--success-color), #20c997);
    box-shadow: 0 4px 16px rgba(40, 167, 69, 0.3);
}

.download-btn.secondary:hover {
    background: linear-gradient(135deg, #218838, #1ea569);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(40, 167, 69, 0.4);
}

.download-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.download-size {
    font-size: 0.85rem;
    opacity: 0.9;
    font-weight: 400;
}

.download-features {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
}

.feature-item {
    color: var(--success-color);
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Installation Instructions */
.download-instructions {
    padding: 1.5rem;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    transition: var(--transition);
}

.download-instructions h3 {
    /* color: var(--primary-color); */
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.download-instructions ol {
    margin: 0;
    padding-left: 1.5rem;
}

.download-instructions li {
    margin-bottom: 0.75rem;
    line-height: 1.6;
    color: var(--text-color);
}

.download-instructions strong {
    /* color: var(--primary-color); */
    font-weight: 600;
}

/* Web Demo Section */
.web-demo-section {
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 2px solid var(--border-color);
}

.web-demo-title {
    text-align: center;
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.web-demo-desc {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 2rem;
    font-size: 1rem;
}

/* Alerts */
.alert {
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Form Styles */
.demo-form {
    background: var(--secondary-color);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-light);
}

.form-group {
    margin-bottom: 1.5rem;
}

.demo-input {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    transition: var(--transition);
}

.demo-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 120, 212, 0.1);
}

.char-counter {
    text-align: right;
    font-size: 0.9rem;
    color: var(--text-lighter);
    margin-top: 0.5rem;
}

.demo-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
}

.demo-btn:hover:not(:disabled) {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.demo-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Token Result */
.demo-result {
    margin-top: 2rem;
    padding: 2rem;
    background: var(--secondary-color);
    border-radius: var(--border-radius-lg);
    text-align: center;
}

.demo-result h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.token-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.demo-token {
    background: white;
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    font-family: 'Courier New', monospace;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
    border: 2px solid var(--border-color);
    min-width: 200px;
}

.copy-btn {
    background: var(--success-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.copy-btn:hover {
    background: #218838;
    transform: translateY(-1px);
}

.token-info {
    color: var(--text-light);
    font-size: 0.9rem;
    margin: 0;
}

/* Footer */
.footer {
    background: var(--text-color);
    color: white;
    padding: 30px 0;
    margin-top: 80px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.footer-single-line {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.footer-left p {
    margin: 0;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

.footer-center .footer-legal {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-legal a:hover {
    color: white;
    text-decoration: underline;
}

.footer-legal .separator {
    color: rgba(255, 255, 255, 0.3);
    font-size: 0.8rem;
}

.footer-right .social-links {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
    padding: 0.5rem;
    border-radius: 4px;
}

.social-link:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.social-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.social-link.github:hover {
    color: #f0f6ff;
}

.social-link.youtube:hover {
    color: #ff0000;
}

/* Responsive Footer */
@media (max-width: 768px) {
    .footer {
        padding: 30px 0;
        margin-top: 60px;
    }
    
    .footer-single-line {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }
    
    .footer-center .footer-legal {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.75rem;
    }
    
    .footer-right .social-links {
        justify-content: center;
        gap: 1.5rem;
    }
}

@media (max-width: 480px) {
    .footer-center .footer-legal {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .footer-legal .separator {
        display: none;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: fadeInUp 0.6s ease-out;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-desc {
        font-size: 1.1rem;
    }
    
    .twin-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .how-steps {
        grid-template-columns: 1fr;
    }
    
    .headbar-slogan {
        display: none;
    }
    
    .token-container {
        flex-direction: column;
    }
    
    /* Demo actions responsive */
    .demo-actions {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 1.5rem;
    }
    
    .demo-web, .demo-download {
        padding: 1.25rem;
    }
    
    .download-btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.95rem;
    }
    
    .download-features {
        gap: 0.4rem;
    }
    
    .feature-item {
        font-size: 0.85rem;
    }
    
    /* .download-instructions {
        margin: 2rem 0;
        padding: 1.5rem;
    } */
    
    .download-instructions ol {
        padding-left: 1.2rem;
    }
    
    .web-demo-section {
        margin-top: 3rem;
        padding-top: 2rem;
    }
    
    .web-demo-title {
        font-size: 1.5rem;
    }
    
    /* Features section mobile */
    .features-roadmap {
        grid-template-columns: 1fr;
    }
    
    .features-roadmap::before {
        left: 0;
        right: 0;
        transform: translateY(-50%) scaleX(1.1); /* Adjust for smaller screen */
    }
    
    .roadmap-item {
        border-top-color: transparent; /* Remove border for mobile */
    }
    
    .roadmap-item.current {
        border-top-color: var(--success-color);
    }
    
    .roadmap-item.upcoming {
        border-top-color: var(--primary-color);
    }
    
    .roadmap-item.future {
        border-top-color: var(--text-lighter);
    }
    
    .roadmap-timeline-dot {
        display: none; /* Hide dot on mobile */
    }
    
    .features-subtitle {
        font-size: 1.1rem;
        margin-bottom: 3rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .demo-content {
        padding: 0 16px;
    }
    
    .demo-form {
        padding: 1.5rem;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
button:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --text-color: #000;
        --text-light: #333;
        --border-color: #000;
    }
}