/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-deep: #08080c;
    --bg-surface: #0f0f14;
    --text-primary: #ffffff;
    --text-secondary: #b8b8c0;
    --text-muted: #6b6b78;
    --accent-ai: #00D4FF;
    --accent-startup: #FF6B35;
    --accent-impact: #7FFF00;
    --accent-creative: #FF10F0;
    --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html, body {
    overflow: hidden;
    height: 100%;
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-deep);
    color: var(--text-primary);
    min-height: 100vh;
    overflow: hidden;
    line-height: 1.6;
}

/* Stars Background */
#stars-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 3rem;
    z-index: 100;
    background: linear-gradient(to bottom, var(--bg-deep) 0%, transparent 100%);
    pointer-events: auto;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    font-family: 'Space Mono', monospace;
    font-size: 1.1rem;
    font-weight: 700;
    padding: 0.6rem 0.9rem;
    border: 2px solid var(--text-primary);
    letter-spacing: 0.05em;
}

.northstar-btn {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-family: 'Space Mono', monospace;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.5rem 0.7rem;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 3px;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.3s var(--transition-smooth);
}

.northstar-btn:hover {
    border-color: rgba(255, 255, 255, 0.5);
    color: var(--text-primary);
}

.northstar-icon {
    width: 14px;
    height: 14px;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    font-family: 'Space Mono', monospace;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s var(--transition-smooth);
    padding: 0.5rem 0;
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link.active {
    color: var(--text-primary);
}

/* Main content */
.main {
    min-height: 100vh;
    position: relative;
    z-index: 10;
    pointer-events: none;
}

.intro {
    padding: 8rem 3rem 2rem;
    max-width: 500px;
    pointer-events: none;
    transition: opacity 0.5s var(--transition-smooth);
}

.intro .title,
.intro .tagline,
.intro .subtitle {
    pointer-events: auto;
}

.title {
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 700;
    line-height: 0.95;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
}

.title-line {
    display: block;
}

.title-line:nth-child(2) {
    color: var(--text-secondary);
}

.tagline {
    font-family: 'Space Mono', monospace;
    font-size: 1rem;
    color: var(--accent-ai);
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}

.social-icons {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.25rem;
    pointer-events: auto;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--text-muted);
    border-radius: 4px;
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.3s var(--transition-smooth);
}

.social-icon:hover {
    color: var(--text-primary);
    border-color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.social-icon svg {
    width: 20px;
    height: 20px;
}

.tldr-btn {
    font-family: 'Space Mono', monospace;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 0.6rem 1rem;
    border: 1px solid var(--accent-ai);
    border-radius: 4px;
    background: transparent;
    color: var(--accent-ai);
    cursor: pointer;
    transition: all 0.3s var(--transition-smooth);
}

.tldr-btn:hover {
    background: var(--accent-ai);
    color: var(--bg-deep);
}

.subtitle {
    font-size: 0.95rem;
    color: var(--text-muted);
    max-width: 320px;
}

/* Constellation */
.constellation-container {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

#constellation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    cursor: default;
}

/* Legend */
.legend {
    position: fixed;
    bottom: 2rem;
    left: 3rem;
    display: flex;
    gap: 1.5rem;
    z-index: 50;
    pointer-events: auto;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Space Mono', monospace;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.legend-dot.ai { background: var(--accent-ai); }
.legend-dot.startup { background: var(--accent-startup); }
.legend-dot.impact { background: var(--accent-impact); }
.legend-dot.creative { background: var(--accent-creative); }

/* Footer */
.footer {
    position: fixed;
    bottom: 2rem;
    right: 3rem;
    text-align: right;
    z-index: 50;
    pointer-events: auto;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    font-family: 'Space Mono', monospace;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s var(--transition-smooth);
}

.footer-links a:hover {
    color: var(--text-primary);
}

/* Detail Panel */
.detail-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: 520px;
    max-width: 90vw;
    height: 100vh;
    background: var(--bg-surface);
    border-left: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 200;
    transform: translateX(100%);
    transition: transform 0.4s var(--transition-smooth);
    overflow-y: auto;
    padding: 3rem 2.5rem;
}

.detail-panel.open {
    transform: translateX(0);
}

.close-btn {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    width: 40px;
    height: 40px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: transparent;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s var(--transition-smooth);
    border-radius: 2px;
}

.close-btn:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
}

.detail-content {
    margin-top: 2rem;
}

.detail-category {
    font-family: 'Space Mono', monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: 0.75rem;
    display: inline-block;
    padding: 0.35rem 0.85rem;
    border-radius: 2px;
}

.detail-category.ai { background: rgba(0, 212, 255, 0.15); color: var(--accent-ai); }
.detail-category.startup { background: rgba(255, 107, 53, 0.15); color: var(--accent-startup); }
.detail-category.impact { background: rgba(127, 255, 0, 0.15); color: var(--accent-impact); }
.detail-category.creative { background: rgba(255, 16, 240, 0.15); color: var(--accent-creative); }

.detail-title {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.detail-role {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.detail-period {
    font-family: 'Space Mono', monospace;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.detail-description {
    font-size: 1.1rem;
    line-height: 1.75;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.detail-highlights {
    margin-bottom: 2rem;
}

.detail-highlights h4 {
    font-family: 'Space Mono', monospace;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.detail-highlights ul {
    list-style: none;
}

.detail-highlights li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.detail-highlights li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--text-muted);
}

.detail-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.detail-link {
    font-family: 'Space Mono', monospace;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 0.85rem 1.5rem;
    border: 1px solid var(--text-muted);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s var(--transition-smooth);
}

.detail-link:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.detail-connections {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
}

.detail-connections h4 {
    font-family: 'Space Mono', monospace;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.connection-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.connection-tag {
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 2px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s var(--transition-smooth);
}

.connection-tag:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

/* TL;DR Modal */
.tldr-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(8, 8, 12, 0.92);
    backdrop-filter: blur(10px);
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s var(--transition-smooth);
}

.tldr-modal.open {
    opacity: 1;
    visibility: visible;
}

.tldr-content {
    position: relative;
    background: var(--bg-surface);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 3rem;
    max-width: 550px;
    width: 90%;
    max-height: 85vh;
    overflow-y: auto;
}

.tldr-content h2 {
    font-size: 1.75rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.tldr-section {
    margin-bottom: 1.75rem;
}

.tldr-section h3 {
    font-family: 'Space Mono', monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent-ai);
    margin-bottom: 0.6rem;
}

.tldr-section p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.tldr-section p strong {
    color: var(--text-primary);
}

.tldr-section a {
    color: var(--accent-ai);
    text-decoration: none;
}

.tldr-section a:hover {
    text-decoration: underline;
}

.tldr-cta {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.tldr-cta p {
    font-family: 'Space Mono', monospace;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
}

.tldr-link {
    display: inline-block;
    font-family: 'Space Mono', monospace;
    font-size: 0.9rem;
    color: var(--accent-ai);
    text-decoration: none;
    padding: 0.75rem 1.25rem;
    border: 1px solid var(--accent-ai);
    border-radius: 4px;
    transition: all 0.3s var(--transition-smooth);
}

.tldr-link:hover {
    background: var(--accent-ai);
    color: var(--bg-deep);
}

/* North Star Modal */
.northstar-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(8, 8, 12, 0.95);
    backdrop-filter: blur(10px);
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s var(--transition-smooth);
}

.northstar-modal.open {
    opacity: 1;
    visibility: visible;
}

.northstar-content {
    position: relative;
    background: var(--bg-surface);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 3rem;
    max-width: 500px;
    width: 90%;
    text-align: center;
}

.northstar-header {
    margin-bottom: 2rem;
}

.northstar-large {
    width: 50px;
    height: 50px;
    color: var(--text-primary);
    margin-bottom: 1rem;
    opacity: 0.9;
}

.northstar-content h2 {
    font-size: 1.4rem;
    color: var(--text-primary);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.northstar-beliefs {
    margin-bottom: 2rem;
    text-align: left;
}

.northstar-beliefs h3 {
    font-family: 'Space Mono', monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent-ai);
    margin-bottom: 1rem;
    text-align: center;
}

.northstar-beliefs ul {
    list-style: none;
    padding: 0;
}

.northstar-beliefs li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 1rem;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.northstar-beliefs li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-ai);
    opacity: 0.6;
}

.northstar-mission {
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.northstar-mission h3 {
    font-family: 'Space Mono', monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--accent-ai);
    margin-bottom: 0.75rem;
}

.northstar-mission p {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.5;
}

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

@media (max-width: 768px) {
    .header {
        padding: 1rem 1.25rem;
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .header-left {
        gap: 0.75rem;
    }

    .logo {
        font-size: 0.9rem;
        padding: 0.4rem 0.6rem;
    }

    .northstar-btn {
        font-size: 0.65rem;
        padding: 0.4rem 0.6rem;
    }

    .northstar-btn span {
        display: none;
    }

    .northstar-icon {
        width: 18px;
        height: 18px;
    }

    .nav {
        gap: 0.6rem;
        order: 2;
        width: 100%;
        justify-content: flex-start;
        margin-top: 0.5rem;
    }

    .nav-link {
        font-size: 0.6rem;
        letter-spacing: 0.08em;
    }

    .intro {
        padding: 7rem 1.25rem 1rem;
        max-width: 65%;
    }

    .title {
        font-size: clamp(2rem, 10vw, 3rem);
        margin-bottom: 1rem;
    }

    .social-icons {
        gap: 0.75rem;
        margin-bottom: 0.75rem;
    }

    .social-icon {
        width: 36px;
        height: 36px;
    }

    .tldr-btn {
        font-size: 0.7rem;
        padding: 0.5rem 0.8rem;
    }

    .tagline {
        font-size: 0.85rem;
        margin-bottom: 0.5rem;
    }

    .subtitle {
        font-size: 0.8rem;
        display: none;
    }

    .legend {
        left: 1.25rem;
        bottom: 1.25rem;
        gap: 0.75rem;
        max-width: 50%;
        flex-wrap: wrap;
    }

    .legend-item {
        font-size: 0.6rem;
    }

    .legend-dot {
        width: 8px;
        height: 8px;
    }

    .footer {
        right: 1.25rem;
        bottom: 1.25rem;
    }

    .footer-links {
        gap: 1rem;
    }

    .footer-links a {
        font-size: 0.7rem;
    }

    .detail-panel {
        width: 100%;
        max-width: 100%;
        padding: 2rem 1.5rem;
    }

    .tldr-content {
        padding: 2rem 1.5rem;
        margin: 1rem;
    }

    .tldr-content h2 {
        font-size: 1.4rem;
    }

    .northstar-content {
        padding: 2rem 1.5rem;
        margin: 1rem;
    }
}

/* Extra small screens */
@media (max-width: 480px) {
    .intro {
        max-width: 55%;
        padding-top: 6.5rem;
    }

    .title {
        font-size: clamp(1.6rem, 9vw, 2.5rem);
    }

    .nav {
        gap: 0.4rem;
    }

    .nav-link {
        font-size: 0.55rem;
    }

    .legend {
        display: none;
    }
}

/* North Star Detail Panel */
.northstar-detail {
    text-align: center;
}

.northstar-beliefs {
    margin: 2rem 0;
    text-align: left;
}

.northstar-beliefs h4 {
    font-family: "Space Mono", monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: #a8c8ff;
    margin-bottom: 1rem;
    text-align: center;
}

.northstar-beliefs ul {
    list-style: none;
    padding: 0;
}

.northstar-beliefs li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 1rem;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.northstar-beliefs li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: #a8c8ff;
    opacity: 0.7;
}

.northstar-mission {
    padding-top: 1.5rem;
    border-top: 1px solid rgba(168, 200, 255, 0.2);
}

.northstar-mission h4 {
    font-family: "Space Mono", monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: #a8c8ff;
    margin-bottom: 0.75rem;
}

.northstar-mission p {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.5;
}