/* ============================================================
   SAILPORT - MODERN INSTITUTE DESIGN
   Inspired by TBI's bold, professional approach
   Inter Typography System
   ============================================================ */

:root {
    --color-primary: #000000;
    --color-secondary: #333333;
    --color-text: #666666;
    --color-bg: #ffffff;
    --color-bg-light: #f8f8f8;
    --color-accent: #000000;
    --color-border: #e5e5e5;
    
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --spacing: 1rem;
}


/* ============================================================
   BASE
   ============================================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */

h1, h2, h3, h4 {
    font-family: var(--font-primary);
    font-weight: 800;
    line-height: 1.2;
    color: var(--color-primary);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: 2rem;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1.5rem;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 1rem;
}

h4 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

p {
    margin-bottom: 1rem;
    line-height: 1.7;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: opacity 0.2s ease;
}

a:hover {
    opacity: 0.7;
}

/* ============================================================
   HEADER
   ============================================================ */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-logo a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
    color: var(--color-primary);
}

.header-logo svg {
    width: 40px;
    height: 40px;
    color: var(--color-primary);
}

.header-nav {
    display: flex;
    gap: 2.5rem;
}

.header-nav a {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-secondary);
}

/* ============================================================
   HERO
   ============================================================ */

.hero {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
    background: linear-gradient(135deg, #fafafa 0%, #ffffff 50%, #f8f8f8 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-rings {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 1;
}

.hero-rings .ring {
    color: #000000;
    transform-origin: center;
    transition: none; /* No animation without scroll */
}

.hero-rings .ring-left {
    /* Moves from left towards center on scroll */
}

.hero-rings .ring-right {
    /* Moves from right towards center on scroll */
}

.hero-rings .ring-top {
    /* Moves from top towards center on scroll */
}

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

.hero-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text);
    margin-bottom: 1.5rem;
}

.hero-content h1 {
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text);
    margin-bottom: 2rem;
}

.hero-cta {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--color-primary);
    color: var(--color-bg);
    font-weight: 600;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border-radius: 4px;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.hero-cta:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

/* ============================================================
   SECTIONS
   ============================================================ */

.section-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text);
    margin-bottom: 1.5rem;
}

.section-lead {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-secondary);
    margin-bottom: 3rem;
    max-width: 900px;
}

/* ============================================================
   APPROACH SECTION
   ============================================================ */

.section-approach {
    max-width: 1400px;
    margin: 0 auto;
    padding: 6rem 2rem;
}

.approach-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.approach-card {
    padding: 2.5rem;
    background: var(--color-bg-light);
    border-radius: 8px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.approach-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.approach-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.approach-card p {
    color: var(--color-text);
    margin-bottom: 1.5rem;
}

.card-link {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
}

/* ============================================================
   FEATURED SECTION
   ============================================================ */

.section-featured {
    background: var(--color-primary);
    color: var(--color-bg);
    padding: 6rem 2rem;
}

.section-featured > * {
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

.featured-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    opacity: 0.6;
    margin-bottom: 1rem;
}

.featured-category {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    opacity: 0.8;
}

.section-featured h2 {
    color: var(--color-bg);
    max-width: 900px;
    margin-bottom: 1rem;
}

.featured-date {
    font-size: 0.875rem;
    opacity: 0.6;
    margin-bottom: 2rem;
}

.featured-content {
    max-width: 800px;
}

.featured-content p {
    font-size: 1.125rem;
    line-height: 1.7;
    margin-bottom: 2rem;
}

.btn-primary {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--color-bg);
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border-radius: 4px;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    opacity: 0.9;
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */

.section-about {
    max-width: 1400px;
    margin: 0 auto;
    padding: 8rem 2rem;
    text-align: center;
}

.about-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text);
    margin-bottom: 2rem;
}

.section-about h2 {
    font-size: clamp(3rem, 6vw, 5rem);
    line-height: 1.1;
    margin-bottom: 3rem;
}

.highlight {
    color: var(--color-text);
}

.btn-outline {
    display: inline-block;
    padding: 1rem 2.5rem;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border-radius: 4px;
    transition: all 0.2s ease;
}

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

/* ============================================================
   INSIGHTS SECTION
   ============================================================ */

.section-insights {
    max-width: 1400px;
    margin: 0 auto;
    padding: 4rem 2rem 6rem;
}

.insights-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
}

.insights-header h3 {
    font-size: 2rem;
    margin: 0;
}

.insights-link {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.insight-card {
    padding: 2rem;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.insight-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.insight-category {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text);
    margin-bottom: 1rem;
}

.insight-card h4 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.insight-card p {
    color: var(--color-text);
}

/* ============================================================
   ECOSYSTEM SECTION
   ============================================================ */

.section-ecosystem {
    max-width: 1400px;
    margin: 0 auto;
    padding: 6rem 2rem;
}

.section-intro {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-secondary);
    max-width: 800px;
    margin-bottom: 4rem;
}

.ecosystem-grid {
    display: grid;
    gap: 3rem;
}

.ecosystem-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.ecosystem-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    border-radius: 8px;
}

.ecosystem-placeholder {
    width: 100%;
    height: 100%;
}

.ecosystem-content h3 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.ecosystem-tagline {
    font-size: 0.875rem;
    font-style: italic;
    color: var(--color-text);
    margin-bottom: 1.5rem;
}

.ecosystem-meta {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-top: 1.5rem;
}

.meta-tag {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.5rem 1rem;
    background: var(--color-bg-light);
    border-radius: 20px;
}

/* ============================================================
   NEWSLETTER SECTION
   ============================================================ */

.section-newsletter {
    background: var(--color-bg-light);
    padding: 6rem 2rem;
    text-align: center;
    overflow: hidden;
}

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

.newsletter-labels {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2rem;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-text);
}

.section-newsletter h2 {
    margin-bottom: 1rem;
}

.section-newsletter p {
    font-size: 1.125rem;
    color: var(--color-text);
    margin-bottom: 2rem;
}

/* ============================================================
   FOOTER
   ============================================================ */

.site-footer {
    background: var(--color-primary);
    color: var(--color-bg);
    padding: 4rem 2rem 2rem;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-main {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 4rem;
}

.footer-col h4 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: capitalize;
    margin-bottom: 1.5rem;
    color: var(--color-bg);
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-col a {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-col a:hover {
    color: var(--color-bg);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-description {
    font-size: 0.875rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 2rem;
    max-width: 800px;
}

.footer-legal {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-legal a {
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .header-nav {
        gap: 1.5rem;
    }
    
    .hero {
        height: 80vh;
        min-height: 500px;
    }
    
    .hero-rings .ring {
        stroke-width: 40;
    }
    
    .section-approach,
    .section-insights,
    .section-ecosystem {
        padding: 4rem 1.5rem;
    }
    
    .approach-grid,
    .insights-grid {
        grid-template-columns: 1fr;
    }
    
    .ecosystem-card {
        grid-template-columns: 1fr;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .newsletter-labels {
        gap: 1rem;
    }
    
    .legal-container {
        grid-template-columns: 1fr;
    }
    
    .legal-sidebar {
        position: static;
        border-right: none;
        border-bottom: 1px solid var(--color-border);
        padding-bottom: 2rem;
        margin-bottom: 2rem;
    }
    
    .cookie-table {
        font-size: 0.875rem;
    }
    
    .cookie-table th,
    .cookie-table td {
        padding: 0.75rem 0.5rem;
    }
}

/* ============================================================
   LEGAL PAGES
   ============================================================ */

.legal-page {
    padding: 6rem 2rem 4rem;
    min-height: 60vh;
}

.legal-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 4rem;
}

.legal-sidebar {
    position: sticky;
    top: 120px;
    height: fit-content;
}

.legal-sidebar h3 {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text);
    margin-bottom: 1.5rem;
}

.legal-nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.legal-nav a {
    padding: 0.75rem 1rem;
    border-radius: 4px;
    font-weight: 500;
    color: var(--color-secondary);
    transition: all 0.2s ease;
}

.legal-nav a:hover {
    background: var(--color-bg-light);
    color: var(--color-primary);
}

.legal-nav a.active {
    background: var(--color-primary);
    color: var(--color-bg);
}

.legal-content {
    max-width: 800px;
}

.legal-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.legal-intro {
    font-size: 0.875rem;
    color: var(--color-text);
    margin-bottom: 3rem;
}

.legal-section {
    margin-bottom: 3rem;
}

.legal-section h2 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    margin-top: 2rem;
}

.legal-section h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    margin-top: 1.5rem;
}

.legal-section h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    margin-top: 1rem;
}

.legal-section p {
    margin-bottom: 1rem;
    line-height: 1.7;
}

.legal-section ul,
.legal-section ol {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.legal-section li {
    margin-bottom: 0.75rem;
    line-height: 1.7;
}

.legal-section a {
    color: var(--color-primary);
    text-decoration: underline;
}

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

.cookie-table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    font-size: 0.9375rem;
}

.cookie-table th,
.cookie-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.cookie-table th {
    font-weight: 600;
    background: var(--color-bg-light);
    color: var(--color-primary);
}

.cookie-table tbody tr:hover {
    background: var(--color-bg-light);
}

/* ============================================================
   ACCESSIBILITY
   ============================================================ */

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

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