/* ===== GIXS Design System ===== */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #111118;
    --bg-card: #16161e;
    --text-primary: #f0f0f5;
    --text-secondary: #8888a0;
    --text-muted: #555568;
    --accent: #a78bfa;
    --accent-dim: rgba(167, 139, 250, 0.15);
    --accent-glow: rgba(167, 139, 250, 0.3);
    --border: rgba(255, 255, 255, 0.06);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

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

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
}

::selection {
    background: var(--accent-dim);
    color: var(--accent);
}

/* ===== Cursor Glow ===== */
#cursor-glow {
    position: fixed;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(167, 139, 250, 0.15) 0%, rgba(167, 139, 250, 0.05) 35%, transparent 70%);
    pointer-events: none;
    transform: translate(-50%, -50%);
    z-index: 0;
    transition: opacity 0.3s;
    will-change: transform;
}

/* ===== Particle Canvas ===== */
#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ===== Navigation ===== */
#main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1.25rem 2rem;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    background: rgba(10, 10, 15, 0.7);
    border-bottom: 1px solid var(--border);
    transition: all 0.4s var(--ease-out);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
}

.nav-logo img {
    border-radius: 6px;
    transition: transform 0.3s var(--ease-spring);
}

.nav-logo:hover img {
    transform: scale(1.1) rotate(-5deg);
}

.nav-wordmark {
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.15em;
}

.nav-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    animation: pulse 2s ease-in-out infinite;
}

.status-text {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    letter-spacing: 0.05em;
}

.lang-switch {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin-right: 1rem;
    padding-right: 1rem;
    border-right: 1px solid var(--border);
}

.lang-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    cursor: pointer;
    padding: 0.2rem 0.4rem;
    transition: all 0.3s ease;
    letter-spacing: 0.05em;
    border-radius: 4px;
}

.lang-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.lang-btn.active {
    color: var(--accent);
    background: var(--accent-dim);
}

.lang-divider {
    color: var(--border);
    font-size: 0.6rem;
    pointer-events: none;
}

@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 var(--accent-glow); }
    50% { opacity: 0.6; box-shadow: 0 0 0 6px transparent; }
}

/* ===== Sections ===== */
.section {
    position: relative;
    z-index: 1;
}

.section-inner {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===== Hero ===== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 8rem 2rem 6rem;
}

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

.hero-overline {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    letter-spacing: 0.25em;
    color: var(--accent);
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeUp 0.8s var(--ease-out) 0.2s forwards;
}

.overline-bracket {
    color: var(--text-muted);
}

.hero-title {
    font-size: clamp(2.8rem, 8vw, 5.5rem);
    font-weight: 300;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: fadeUp 1s var(--ease-out) 0.4s forwards;
}

.title-line {
    display: block;
}

.title-accent {
    background: linear-gradient(135deg, var(--accent), #818cf8, #c4b5fd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 500;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto 2.5rem;
    font-weight: 300;
    opacity: 0;
    animation: fadeUp 1s var(--ease-out) 0.6s forwards;
}

.hero-domains {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeUp 1s var(--ease-out) 0.8s forwards;
}

.domain-tag {
    font-size: 0.8rem;
    color: var(--text-muted);
    padding: 0.4rem 1rem;
    border: 1px solid var(--border);
    border-radius: 100px;
    font-family: var(--font-mono);
    letter-spacing: 0.02em;
    transition: all 0.4s var(--ease-out);
    cursor: default;
}

.domain-tag:hover {
    color: var(--accent);
    border-color: var(--accent-dim);
    background: var(--accent-dim);
    transform: translateY(-2px);
}

.domain-separator {
    color: var(--text-muted);
    opacity: 0.3;
}

/* ===== Philosophy Cards ===== */
.philosophy-section {
    padding: 8rem 0;
}

.philosophy-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.philosophy-card {
    background: rgba(22, 22, 30, 0.4);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    transition: all 0.5s var(--ease-out);
    opacity: 0;
    transform: translateY(30px);
}

.philosophy-card.revealed {
    opacity: 1;
    transform: translateY(0);
}

.philosophy-card:hover {
    border-color: var(--accent-dim);
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4), 0 0 40px var(--accent-dim);
}

.card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: var(--accent-dim);
    color: var(--accent);
    margin-bottom: 1.5rem;
    transition: transform 0.3s var(--ease-spring);
}

.philosophy-card:hover .card-icon {
    transform: scale(1.1);
}

.card-title {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.card-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    font-weight: 300;
}

/* ===== Signal Section ===== */
.signal-section {
    padding: 6rem 0;
}

.signal-content {
    text-align: center;
    opacity: 0;
    transform: translateY(30px);
}

.signal-content.revealed {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.8s var(--ease-out);
}

.signal-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.signal-quote {
    font-size: clamp(1.1rem, 3vw, 1.5rem);
    font-weight: 300;
    color: var(--text-secondary);
    font-style: italic;
    max-width: 650px;
    margin: 0 auto 3rem;
    border: none;
    padding: 0;
}

.signal-terminal {
    max-width: 500px;
    margin: 0 auto;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--bg-secondary);
}

.terminal-header {
    display: flex;
    gap: 6px;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid var(--border);
}

.terminal-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--text-muted);
    opacity: 0.3;
}

.terminal-body {
    padding: 1.25rem 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    text-align: left;
}

.terminal-prompt {
    color: var(--accent);
    margin-right: 0.5rem;
}

.terminal-text {
    color: var(--text-secondary);
}

.terminal-cursor {
    color: var(--accent);
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* ===== Contact ===== */
.contact-section {
    padding: 8rem 0;
    text-align: center;
}

.contact-content {
    opacity: 0;
    transform: translateY(30px);
}

.contact-content.revealed {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.8s var(--ease-out);
}

.contact-title {
    font-size: clamp(1.8rem, 5vw, 2.8rem);
    font-weight: 300;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
}

.contact-subtitle {
    color: var(--text-secondary);
    font-weight: 300;
    margin-bottom: 2.5rem;
    font-size: 1rem;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border: 1px solid var(--accent);
    border-radius: 100px;
    color: var(--accent);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    transition: all 0.4s var(--ease-out);
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--accent);
    opacity: 0;
    transition: opacity 0.4s var(--ease-out);
    z-index: 0;
}

.cta-button:hover::before {
    opacity: 1;
}

.cta-button:hover {
    color: var(--bg-primary);
    transform: translateY(-2px);
    box-shadow: 0 10px 40px var(--accent-glow);
}

.cta-text, .cta-arrow {
    position: relative;
    z-index: 1;
}

.cta-arrow {
    transition: transform 0.3s var(--ease-out);
}

.cta-button:hover .cta-arrow {
    transform: translateX(4px);
}

/* ===== Footer ===== */
#main-footer {
    padding: 2rem;
    border-top: 1px solid var(--border);
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-copyright {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.footer-link {
    color: var(--text-muted);
    transition: color 0.3s;
}

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

/* ===== Reveal Animation ===== */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    #main-nav { padding: 1rem 1.25rem; }

    .philosophy-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .hero-section { padding: 7rem 1.5rem 4rem; }

    .hero-domains { gap: 0.5rem; }

    .domain-separator { display: none; }

    .domain-tag { font-size: 0.7rem; padding: 0.35rem 0.75rem; }

    .section-inner { padding: 0 1.25rem; }

    .signal-terminal { margin: 0 0.5rem; }

    .footer-inner { flex-direction: column; gap: 1rem; text-align: center; }

    #cursor-glow { display: none; }
}

@media (max-width: 480px) {
    .hero-title { font-size: clamp(2.2rem, 10vw, 2.8rem); }
    .status-text { display: none; }
    .hero-subtitle { font-size: 0.95rem; padding: 0 0.5rem; }
    .contact-title { font-size: 2rem; }
    .terminal-body { font-size: 0.75rem; padding: 1rem; }
}