/* ============================================
   CSS Variables - Design System
   ============================================ */
:root {
    /* Primary Colors */
    --color-blue: #3B82F6;
    --color-blue-dark: #2563EB;
    --color-blue-light: #60A5FA;

    /* Secondary Colors */
    --color-purple: #8B5CF6;

    /* Brand Accent */
    --color-teal: #5fccb4;

    /* Utility Colors */
    --color-green: #10B981;
    --color-yellow: #F59E0B;
    --color-red: #EF4444;

    /* Background */
    --color-bg-dark-1: #1e3a5f;
    --color-bg-dark-2: #2d5a7b;
    --color-bg-dark-3: #1a2f45;

    /* Text */
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #E2E8F0;

    /* Typography */
    --font-family: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-base: 16px;
    --line-height-body: 1.6;
    --line-height-heading: 1.2;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;

    /* Touch targets */
    --min-touch-target: 44px;
}

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

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: var(--line-height-body);
    color: var(--color-text-primary);
    background: linear-gradient(180deg,
        var(--color-bg-dark-1) 0%,
        var(--color-bg-dark-2) 50%,
        var(--color-bg-dark-3) 100%);
    background-attachment: fixed;
    min-height: 100vh;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    line-height: var(--line-height-heading);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

p {
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--color-teal);
    text-decoration: underline;
}

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

a:focus {
    outline: 3px solid var(--color-teal);
    outline-offset: 2px;
}

/* ============================================
   Skip Link
   ============================================ */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--color-teal);
    color: var(--color-bg-dark-3);
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: none;
    font-weight: 600;
    z-index: 9999;
}

.skip-link:focus {
    top: 0;
}

/* ============================================
   Container & Layout
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xxl) 0;
}

/* ============================================
   Navigation
   ============================================ */
header {
    background: rgba(26, 47, 69, 0.95);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.logo img {
    display: block;
    height: 40px;
    width: auto;
}

.mobile-menu-toggle {
    display: none;
    background: transparent;
    border: 2px solid var(--color-text-primary);
    color: var(--color-text-primary);
    padding: var(--spacing-xs);
    min-width: var(--min-touch-target);
    min-height: var(--min-touch-target);
    cursor: pointer;
}

.mobile-menu-toggle:hover,
.mobile-menu-toggle:focus {
    background: var(--color-blue);
    border-color: var(--color-blue);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
    justify-content: flex-end;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-links a {
    color: var(--color-text-primary);
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-sm);
    display: block;
    min-height: var(--min-touch-target);
    display: flex;
    align-items: center;
}

.nav-links a:hover {
    color: var(--color-teal);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.language-switcher {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.language-switcher a {
    text-decoration: none;
    padding: var(--spacing-xs);
}

.language-switcher a[aria-current="page"] {
    font-weight: 700;
    color: var(--color-teal);
}

/* Mobile Menu */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 72px;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: calc(100vh - 72px);
        background: var(--color-bg-dark-3);
        flex-direction: column;
        align-items: stretch;
        padding: var(--spacing-md);
        transition: right 0.3s ease;
        box-shadow: -4px 0 10px rgba(0, 0, 0, 0.3);
    }

    .nav-menu.active {
        right: 0;
    }

    /* No-JS fallback: show menu on focus */
    .nav-menu:focus-within {
        right: 0;
    }

    /* No-JS fallback: show menu when toggle button is focused and menu has focus */
    .mobile-menu-toggle:focus + .nav-menu,
    .mobile-menu-toggle:active + .nav-menu {
        right: 0;
    }

    .nav-links {
        flex-direction: column;
        gap: 0;
    }

    .nav-links a {
        padding: var(--spacing-sm);
    }

    .nav-actions {
        flex-direction: column;
        align-items: stretch;
        margin-top: var(--spacing-md);
    }
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    min-height: var(--min-touch-target);
    border: none;
    border-radius: 6px;
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background: var(--color-teal);
    color: var(--color-bg-dark-3);
}

.btn-primary:hover,
.btn-primary:focus {
    background: var(--color-blue-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(95, 204, 180, 0.4);
}

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

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    position: relative;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

/* ============================================
   Problem Section
   ============================================ */
.problem {
    background: rgba(255, 255, 255, 0.03);
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.pain-points {
    list-style: none;
    margin: var(--spacing-lg) 0;
}

.pain-points li {
    padding: var(--spacing-sm) 0 var(--spacing-sm) var(--spacing-lg);
    position: relative;
    font-size: 1.125rem;
    line-height: 1.6;
}

.pain-points li::before {
    content: '×';
    position: absolute;
    left: 0;
    color: var(--color-red);
    font-size: 1.5rem;
    font-weight: 700;
}

.closing-statement {
    font-size: 1.25rem;
    color: var(--color-teal);
    margin-top: var(--spacing-lg);
}

/* ============================================
   Solution Section
   ============================================ */
.section-intro {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-secondary);
}

.key-points {
    list-style: none;
    margin: var(--spacing-lg) 0;
}

.key-points li {
    padding: var(--spacing-sm) 0 var(--spacing-sm) var(--spacing-lg);
    position: relative;
    font-size: 1.125rem;
}

.key-points li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-teal);
    font-size: 1.5rem;
    font-weight: 700;
}

.tagline {
    font-size: 1.25rem;
    color: var(--color-teal);
    margin-top: var(--spacing-lg);
}

/* ============================================
   Features Section
   ============================================ */
.features {
    background: rgba(255, 255, 255, 0.03);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    padding: var(--spacing-md);
    border-radius: 12px;
    border: 1px solid rgba(95, 204, 180, 0.2);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(95, 204, 180, 0.2);
}

.feature-icon {
    margin-bottom: var(--spacing-sm);
}

.feature-icon svg {
    width: 40px;
    height: 40px;
    stroke: var(--color-teal);
}

.feature-card h3 {
    color: var(--color-teal);
    margin-bottom: var(--spacing-sm);
}

/* ============================================
   How It Works Section
   ============================================ */
.process-steps {
    list-style: none;
    margin: var(--spacing-lg) 0;
    counter-reset: step;
}

.process-step {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    position: relative;
}

.process-step:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 25px;
    top: 60px;
    bottom: -24px;
    width: 2px;
    background: linear-gradient(180deg, var(--color-teal), transparent);
}

.step-number {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: var(--color-teal);
    color: var(--color-bg-dark-3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
}

.step-content h3 {
    margin-bottom: var(--spacing-xs);
}

.additional-points {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-md);
    background: rgba(95, 204, 180, 0.1);
    border-left: 4px solid var(--color-teal);
    border-radius: 4px;
}

/* ============================================
   Target Audience Section
   ============================================ */
.audience-list {
    list-style: none;
    margin-top: var(--spacing-lg);
}

.audience-list li {
    padding: var(--spacing-sm) 0 var(--spacing-sm) var(--spacing-lg);
    position: relative;
    font-size: 1.125rem;
}

.audience-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-blue-light);
    font-size: 1.5rem;
    font-weight: 700;
}

/* ============================================
   Benefits Section
   ============================================ */
.benefits {
    background: rgba(255, 255, 255, 0.03);
}

.benefits-list {
    list-style: none;
    margin-top: var(--spacing-lg);
    display: grid;
    gap: var(--spacing-md);
}

.benefits-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    font-size: 1.125rem;
}

.checkmark {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.checkmark svg {
    width: 20px;
    height: 20px;
    stroke: var(--color-green);
}

/* ============================================
   Security Section
   ============================================ */
.trust-badges {
    list-style: none;
    margin-top: var(--spacing-lg);
    display: grid;
    gap: var(--spacing-sm);
}

.trust-badges li {
    font-size: 1.125rem;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    border-left: 3px solid var(--color-teal);
}

/* ============================================
   Contact Form Section
   ============================================ */
.contact {
    background: rgba(255, 255, 255, 0.03);
}

.contact-form {
    max-width: 600px;
    margin: var(--spacing-lg) auto 0;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--color-text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    min-height: var(--min-touch-target);
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 6px;
    color: var(--color-text-primary);
    font-family: var(--font-family);
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-teal);
    box-shadow: 0 0 0 3px rgba(95, 204, 180, 0.2);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form button[type="submit"] {
    width: 100%;
    margin-top: var(--spacing-sm);
}

.form-message {
    padding: var(--spacing-sm);
    border-radius: 6px;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    text-align: center;
    display: none;
}

.form-message:not(:empty) {
    display: block;
}

.form-message-success {
    background: rgba(16, 185, 129, 0.1);
    border: 2px solid var(--color-green);
    color: var(--color-green);
}

.form-message-error {
    background: rgba(239, 68, 68, 0.1);
    border: 2px solid var(--color-red);
    color: var(--color-red);
}

.contact-fallback {
    text-align: center;
    margin-top: var(--spacing-md);
    color: var(--color-text-secondary);
}

/* ============================================
   Resources/Blog Section
   ============================================ */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.blog-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(95, 204, 180, 0.2);
}

.blog-card img {
    width: 100%;
    height: auto;
    display: block;
}

.blog-content {
    padding: var(--spacing-md);
}

.blog-content h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-teal);
}

.blog-link {
    display: inline-block;
    margin-top: var(--spacing-sm);
    color: var(--color-blue-light);
    text-decoration: none;
    font-weight: 600;
}

.blog-link:hover {
    text-decoration: underline;
}

/* ============================================
   Footer
   ============================================ */
footer {
    background: rgba(0, 0, 0, 0.3);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    margin-top: var(--spacing-xxl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-brand img {
    margin-bottom: var(--spacing-sm);
}

.footer-nav ul,
.social-links {
    list-style: none;
}

.footer-nav ul li,
.social-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-nav a,
.social-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
}

.footer-nav a:hover,
.social-links a:hover {
    color: var(--color-teal);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.footer-bottom p {
    display: inline;
    margin: 0 var(--spacing-sm);
}

/* ============================================
   Responsive Adjustments
   ============================================ */
@media (max-width: 768px) {
    .section {
        padding: var(--spacing-xl) 0;
    }

    .features-grid,
    .blog-grid {
        grid-template-columns: 1fr;
    }

    .process-step {
        flex-direction: column;
    }

    .process-step:not(:last-child)::after {
        left: 25px;
        top: 60px;
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    body {
        background: white;
        color: black;
    }

    header,
    .mobile-menu-toggle,
    .nav-actions,
    .contact-form,
    footer {
        display: none;
    }
}