:root {
    --primary-color: #dd6058;
    --primary-color-dark: #c4433b;
    --background-color: #FFFFFF;
    --section-highlight-bg: #F8F9FA;
    --text-color: #343A40;
    --text-color-light: #6C757D;
    --heading-color: #212529;
    --border-color: #DEE2E6;
    --code-bg: #1e1e1e;
    --card-shadow: 0 4px 12px rgba(0,0,0,0.05);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    font-family: var(--font-family);
    color: var(--text-color);
    background-color: var(--background-color);
    margin: 0;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3, h4 {
    color: var(--heading-color);
    font-weight: 700;
}

p {
    color: var(--text-color-light);
}

/* --- Navigation Bar --- */
.main-nav {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}
.main-nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--heading-color);
    font-weight: 600;
    font-size: 1.2rem;
    font-family: 'SF Mono', 'Fira Code', 'Menlo', monospace;
}
.nav-links {
    display: flex;
    gap: 25px;
}
.nav-links a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.2s;
}
.nav-links a svg { flex-shrink: 0; }
.nav-links a:hover {
    color: var(--primary-color);
}

/* --- Hero Section --- */
.hero {
    background: linear-gradient(150deg, #fde8e7, #fef2f1);
    padding: 80px 0;
    text-align: center;
}
h1 {
    font-size: 2.5rem;
    line-height: 1.2;
    max-width: 800px;
    margin: 0 auto 20px;
}
.hero-pills {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin: 0 auto 28px;
    flex-wrap: wrap;
}
.hero-pill {
    display: inline-block;
    padding: 6px 16px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary-color-dark);
    background: rgba(221, 96, 88, 0.08);
    border: 1px solid rgba(221, 96, 88, 0.25);
    border-radius: 20px;
    letter-spacing: 0.01em;
}
.hero-tagline {
    font-size: 1.05rem;
    max-width: 650px;
    margin: 0 auto 40px;
    color: var(--text-color-light);
    font-weight: 400;
}
.hero-cta {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* --- Buttons --- */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    border: 1px solid transparent;
    transition: all 0.2s ease;
    cursor: pointer;
}
.button-primary {
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 2px 4px rgba(221, 96, 88, 0.2);
}
.button-primary:hover {
    background-color: var(--primary-color-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(221, 96, 88, 0.2);
}
.button-secondary {
    background-color: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}
.button-secondary:hover {
    border-color: var(--text-color);
    background-color: #f8f9fa;
}
.button-large { padding: 14px 28px; font-size: 1.1rem; }
.button-small { padding: 8px 16px; font-size: 0.9rem; }
.button-with-icon { gap: 8px; }

/* --- General Sections --- */
.section { padding: 80px 0; }
.section-highlight { background-color: var(--section-highlight-bg); }
.section-header {
    text-align: center;
    margin-bottom: 60px;
}
.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}
.section-header p {
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto;
}

/* --- The Problem Section --- */
.problem-content {
    max-width: 800px;
    margin: 0 auto;
}
.problem-content > p {
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 16px;
}
.problem-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
    margin-top: 40px;
}
.problem-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 25px;
    transition: all 0.2s ease;
}
.problem-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow);
    border-color: #ccc;
}
.problem-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}
.problem-card-header i {
    color: var(--primary-color);
}
.problem-card-header h3 {
    margin: 0;
    font-size: 1.25rem;
}
.problem-card p {
    font-size: 0.95rem;
    margin-bottom: 20px;
}

/* --- Five Components Section --- */
.components-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}
.component-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 28px 20px;
    text-align: center;
    transition: all 0.2s ease;
}
.component-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow);
    border-color: #ccc;
}
.component-symbol {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    border-radius: 12px;
    background: rgba(221, 96, 88, 0.08);
    border: 2px solid rgba(221, 96, 88, 0.25);
    color: var(--primary-color-dark);
    font-size: 1.5rem;
    font-weight: 700;
    font-family: 'SF Mono', 'Fira Code', 'Menlo', monospace;
    margin-bottom: 16px;
}
.component-body h3 {
    margin: 0 0 8px;
    font-size: 1.1rem;
}
.component-body p {
    font-size: 0.9rem;
    margin: 0;
    line-height: 1.5;
}

/* --- Code Block Section --- */
.code-block {
    background: var(--code-bg);
    border-radius: 12px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.15);
    overflow: hidden;
    max-width: 900px;
    margin: 0 auto;
}
.code-block-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    background: #2a2a2a;
    border-bottom: 1px solid #333;
}
.code-block-label {
    color: #888;
    font-size: 0.85rem;
    font-weight: 500;
}
.code-block-link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: color 0.2s;
}
.code-block-link:hover {
    color: #f5a09a;
}
.code-block pre {
    margin: 0;
    padding: 20px;
    overflow-x: auto;
}
.code-block code {
    font-family: 'SF Mono', 'Fira Code', 'Menlo', monospace;
    font-size: 13px;
    line-height: 1.6;
    color: #d4d4d4;
    white-space: pre;
}

/* Python Syntax Highlighting */
code .keyword { color: #C586C0; }
code .string { color: #CE9178; }
code .comment { color: #6A9955; }
code .function { color: #DCDCAA; }
code .class { color: #4EC9B0; }
code .number { color: #B5CEA8; }
code .decorator { color: #D7BA7D; }
code .operator { color: #d4d4d4; }

/* --- Modules Section --- */
.modules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
}
.module-card {
    background-color: #fff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 25px;
    transition: all 0.2s ease;
}
.module-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow);
    border-color: #ccc;
}
.module-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
}
.module-header i {
    color: var(--primary-color);
}
.module-header h3 {
    margin: 0;
    font-size: 1.25rem;
}
.module-classes {
    margin-bottom: 15px;
    line-height: 2.2;
}
.module-classes code {
    background: var(--section-highlight-bg);
    border-radius: 5px;
    padding: 4px 8px;
    font-size: 0.85rem;
    color: var(--text-color);
    white-space: nowrap;
    margin-right: 4px;
}
.module-card p {
    font-size: 1rem;
    margin-bottom: 20px;
}
.module-links {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* --- Typewriter cursor --- */
code.typing::after {
    content: '\258C';
    color: #d4d4d4;
    animation: blink-cursor 0.6s step-end infinite;
    font-weight: 100;
}
@keyframes blink-cursor {
    50% { opacity: 0; }
}

/* --- Framework link --- */
.framework-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s;
}
.framework-link:hover {
    color: var(--primary-color-dark);
}
.framework-link-below-grid {
    text-align: center;
    margin-top: 30px;
}

/* --- Examples Section --- */
.examples-layout {
    display: flex;
    align-items: center;
    gap: 50px;
}
.examples-text {
    flex: 1;
}
.examples-text h3 {
    font-size: 2rem;
    margin: 0 0 12px;
}
.examples-text p {
    font-size: 1rem;
    margin: 0 0 0;
    line-height: 1.7;
}
.examples-text .button {
    margin-top: 20px;
}
.example-cards {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 15px;
}
.example-card {
    background: white;
    padding: 22px 25px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
}
.example-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--card-shadow);
    border-color: #ccc;
}
.example-card h4 {
    margin: 0 0 8px;
    font-size: 1rem;
    color: var(--heading-color);
}
.example-card p {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* --- Projects / MESQUAL Family Section --- */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    text-align: center;
}
.project-card {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
    position: relative;
}
.project-card i {
    color: var(--primary-color);
    margin-bottom: 15px;
}
.project-card h4 {
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 1.1rem;
}
.project-card p {
    font-size: 0.9rem;
    margin-bottom: 0;
}
.project-card-link {
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}
.project-card-link:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow);
    border-color: #ccc;
}
.coming-soon-badge {
    display: inline-block;
    padding: 3px 10px;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--primary-color-dark);
    background: rgba(221, 96, 88, 0.1);
    border: 1px solid rgba(221, 96, 88, 0.3);
    border-radius: 12px;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    margin-bottom: 8px;
}

/* --- Footer --- */
footer {
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    color: var(--text-color-light);
    font-size: 0.9rem;
}
.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.footer-links {
    display: flex;
    align-items: center;
    gap: 20px;
}
.footer-link {
    color: var(--text-color-light);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}
.footer-link:hover {
    color: var(--primary-color);
}
.footer-icon-link {
    display: inline-flex;
    align-items: center;
}
.footer-icon-link svg {
    fill: var(--text-color-light);
    transition: fill 0.2s;
}
.footer-icon-link:hover svg {
    fill: var(--primary-color);
}

/* --- Responsive --- */
@media (max-width: 992px) {
    .modules-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
    .components-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    }
    .problem-cards {
        grid-template-columns: 1fr;
    }
    .examples-layout {
        flex-direction: column;
    }
    .examples-text {
        position: static;
        text-align: center;
    }
}

@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    .nav-links { display: none; }
    .hero { padding: 60px 0; }
    .section { padding: 60px 0; }
    .section-header h2 { font-size: 2rem; }
    .components-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    .footer-content {
        flex-direction: column;
        gap: 16px;
    }
    .code-block code {
        font-size: 11px;
    }
    .projects-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .components-grid {
        grid-template-columns: 1fr;
    }
}