/* ===========================
   Reset & Base Styles
   =========================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #10b981;
    --accent: #8b5cf6;
    --dark: #1e293b;
    --gray: #64748b;
    --light-gray: #f1f5f9;
    --white: #ffffff;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 16px;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===========================
   Navigation
   =========================== */
.navbar {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
}

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

.nav-brand h2 {
    color: var(--primary);
    font-size: 1.5rem;
    font-weight: 700;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--dark);
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* ===========================
   Buttons
   =========================== */
.btn-primary, .btn-secondary, .btn-outline {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    text-align: center;
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-secondary:hover {
    background: var(--primary);
    color: var(--white);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* ===========================
   Hero Section
   =========================== */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

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

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* ===========================
   Trust Bar
   =========================== */
.trust-bar {
    background: var(--light-gray);
    padding: var(--spacing-md) 0;
}

.trust-items {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.trust-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 500;
}

.trust-icon {
    color: var(--secondary);
    font-size: 1.25rem;
    font-weight: 700;
}

/* ===========================
   Section Headers
   =========================== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--dark);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--gray);
}

/* ===========================
   Packages Section
   =========================== */
.packages {
    padding: var(--spacing-xl) 0;
    background: var(--white);
}

.package-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.package-card {
    background: var(--white);
    border: 2px solid #e2e8f0;
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    position: relative;
    transition: all 0.3s ease;
}

.package-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.package-card.featured {
    border: 3px solid var(--primary);
    box-shadow: var(--shadow-lg);
}

.package-badge {
    position: absolute;
    top: -12px;
    right: var(--spacing-md);
    background: var(--primary);
    color: var(--white);
    padding: 0.375rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
}

.package-card.featured .package-badge {
    background: var(--secondary);
}

.package-name {
    font-size: 1.75rem;
    font-weight: 700;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    color: var(--dark);
}

.package-subtitle {
    color: var(--gray);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.package-description {
    color: var(--gray);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid #e2e8f0;
}

.package-details h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--dark);
}

.package-list, .package-features {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.package-list li {
    padding: 0.375rem 0;
    color: var(--gray);
    padding-left: 1.5rem;
    position: relative;
}

.package-list li:before {
    content: "•";
    position: absolute;
    left: 0.5rem;
    color: var(--primary);
    font-weight: 700;
}

.package-features li {
    padding: 0.5rem 0;
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.package-features .check {
    color: var(--secondary);
    font-weight: 700;
    font-size: 1.125rem;
    flex-shrink: 0;
}

.package-card .btn-outline,
.package-card .btn-primary {
    width: 100%;
    margin-top: var(--spacing-md);
}

/* ===========================
   Comparison Table
   =========================== */
.comparison {
    padding: var(--spacing-xl) 0;
    background: var(--light-gray);
}

.comparison-table-wrapper {
    overflow-x: auto;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.comparison-table thead {
    background: var(--primary);
    color: var(--white);
}

.comparison-table th {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    font-weight: 600;
}

.comparison-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid #e2e8f0;
}

.comparison-table tbody tr:hover {
    background: var(--light-gray);
}

.icon-yes {
    color: var(--secondary);
    font-weight: 700;
}

.icon-partial {
    color: var(--accent);
    font-weight: 500;
}

.icon-no {
    color: var(--gray);
}

/* ===========================
   Features Section
   =========================== */
.features {
    padding: var(--spacing-xl) 0;
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.feature-card {
    background: var(--white);
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    text-align: center;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--dark);
}

.feature-card p {
    color: var(--gray);
    line-height: 1.6;
}

/* ===========================
   Tech Stack
   =========================== */
.tech-stack {
    padding: var(--spacing-xl) 0;
    background: var(--light-gray);
}

.stack-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.stack-category {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.stack-category h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--dark);
}

.stack-tools {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.tool-badge {
    background: var(--light-gray);
    color: var(--dark);
    padding: 0.375rem 0.75rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid #e2e8f0;
}

/* ===========================
   CTA Section
   =========================== */
.cta {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.cta-content p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* ===========================
   Footer
   =========================== */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-section h3, .footer-section h4 {
    margin-bottom: var(--spacing-sm);
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: var(--spacing-xs);
    opacity: 0.8;
}

.footer-section a {
    color: var(--white);
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.footer-section a:hover {
    opacity: 0.7;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.7;
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-md);
        display: none;
    }

    .nav-menu.active {
        display: flex;
    }

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

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

    .section-header h2 {
        font-size: 2rem;
    }

    .package-grid {
        grid-template-columns: 1fr;
    }

    .hero-cta {
        flex-direction: column;
    }

    .cta-buttons {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }

    .trust-items {
        flex-direction: column;
        text-align: center;
    }

    .comparison-table {
        font-size: 0.875rem;
    }

    .comparison-table th,
    .comparison-table td {
        padding: 0.5rem;
    }
}

/* ===========================
   Smooth Scrolling
   =========================== */
html {
    scroll-behavior: smooth;
}

/* ===========================
   Accessibility
   =========================== */
:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}