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

:root {
    --black: #000000;
    --white: #ffffff;
    --grey-50: #fafafa;
    --grey-100: #f4f4f5;
    --grey-200: #e4e4e7;
    --grey-300: #d4d4d8;
    --grey-400: #a1a1aa;
    --grey-500: #71717a;
    --grey-600: #52525b;
    --grey-700: #3f3f46;
    --grey-800: #27272a;
    --grey-900: #18181b;
}

body {
    font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', 'Droid Sans Mono', 'Source Code Pro', monospace;
    background: var(--white);
    color: var(--black);
    line-height: 1.6;
    overflow-x: hidden;
}

body.menu-open {
    overflow: hidden;
}

/* Matrix Background - Only on Light Sections */
#matrix-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
    opacity: 0;
    pointer-events: none;
    display: block;
    transition: opacity 0.5s ease;
}

body.light-section #matrix-bg {
    opacity: 0.15;
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 3rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--grey-200);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.bracket {
    color: var(--grey-400);
    font-size: 1.2rem;
}

.slash {
    color: var(--black);
    font-size: 1.3rem;
    font-weight: 700;
}

.name {
    margin-left: 0.3rem;
    color: var(--black);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 0.02em;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 0.4rem;
    background: #000000;
    border: 2px solid #FFFFFF;
    cursor: pointer;
    padding: 0.75rem;
    border-radius: 6px;
    z-index: 1002;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hamburger span {
    width: 24px;
    height: 3px;
    background: #FFFFFF;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger.active {
    background: #000000;
    border-color: #FFFFFF;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

nav {
    display: flex;
    gap: 2.5rem;
}

nav a {
    color: var(--grey-600);
    text-decoration: none;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    transition: all 0.3s ease;
    position: relative;
    padding-bottom: 0.25rem;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--black);
    transition: width 0.3s ease;
}

nav a:hover {
    color: var(--black);
    transform: translateY(-2px);
}

nav a:hover::after {
    width: 100%;
}

/* Hero */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 2rem;
    background: linear-gradient(180deg, var(--grey-100) 0%, var(--white) 100%);
}

.status {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 1.25rem;
    background: var(--white);
    border: 1px solid var(--grey-300);
    border-radius: 50px;
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    margin-bottom: 3rem;
}

.dot {
    width: 8px;
    height: 8px;
    background: #10b981;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

h1 {
    font-size: clamp(4rem, 12vw, 10rem);
    font-weight: 900;
    letter-spacing: -0.02em;
    line-height: 1;
    margin-bottom: 2rem;
    color: var(--black);
}

.gradient {
    color: var(--grey-500);
    font-weight: 900;
}

.tagline {
    font-size: 1.15rem;
    color: var(--grey-600);
    max-width: 750px;
    letter-spacing: 0.02em;
    margin-bottom: 2.5rem;
    font-weight: 400;
}

/* Sections */
.section {
    position: relative;
    padding: 8rem 2rem;
    background: var(--white);
}

.section.dark {
    background: var(--grey-900);
    color: var(--white);
}

.section.dark h2 {
    color: #FFFFFF;
}

.section.dark h3,
.section.dark .lead {
    color: #F5F5F5;
}

.section.dark p,
.section.dark .num {
    color: #E0E0E0;
}

.section.dark .note {
    color: #B0B0B0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

h2 {
    font-size: 2rem;
    margin-bottom: 4rem;
    letter-spacing: 0.05em;
    font-weight: 700;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

h2.visible {
    opacity: 1;
    transform: translateY(0);
}

h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
    font-weight: 600;
    color: var(--black);
}

.section.dark h3 {
    color: var(--grey-100);
}

.grid-2 {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
}

.grid-2 > div {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.grid-2 > div.visible {
    opacity: 1;
    transform: translateY(0);
}

.grid-2 > div:nth-child(1) {
    transition-delay: 0.1s;
}

.grid-2 > div:nth-child(2) {
    transition-delay: 0.2s;
}

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

.grid-3 > div {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.grid-3 > div.visible {
    opacity: 1;
    transform: translateY(0);
}

.grid-3 > div:nth-child(1) {
    transition-delay: 0.1s;
}

.grid-3 > div:nth-child(2) {
    transition-delay: 0.2s;
}

.grid-3 > div:nth-child(3) {
    transition-delay: 0.3s;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

p {
    margin-bottom: 1.5rem;
    color: var(--grey-600);
    line-height: 1.8;
}

.lead {
    font-size: 1.25rem;
    color: var(--black);
    font-weight: 500;
    line-height: 1.6;
}

.note {
    font-size: 0.85rem;
    color: var(--grey-500);
    margin-top: 1rem;
}

/* Callout */
.callout {
    margin: 2rem 0;
    padding: 1.5rem 2rem;
    background: var(--grey-100);
    border-left: 4px solid var(--black);
    border-radius: 4px;
}

.section.dark .callout {
    background: var(--grey-800);
    border-left-color: #00D9FF;
}

.callout p {
    margin: 0;
    font-size: 1.1rem;
    line-height: 1.6;
}

/* Capabilities */
.capabilities {
    background: var(--grey-100);
    border: 1px solid var(--grey-200);
    border-radius: 4px;
    padding: 2rem;
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.section.dark .capabilities {
    background: var(--grey-800);
    border-color: var(--grey-700);
}

.capabilities.visible {
    opacity: 1;
    transform: translateX(0);
}

.capabilities h3 {
    margin-bottom: 1.5rem;
}

.capabilities ul {
    list-style: none;
}

.capabilities li {
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--grey-600);
    position: relative;
    font-size: 0.95rem;
}

.section.dark .capabilities li {
    color: #E0E0E0;
}

.capabilities li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--grey-400);
}

/* Focus Boxes */
.focus-box {
    background: var(--grey-100);
    border: 1px solid var(--grey-200);
    border-radius: 4px;
    padding: 2.5rem;
    transition: all 0.3s;
    opacity: 0;
    transform: translateY(30px);
}

.section.dark .focus-box {
    background: var(--grey-800);
    border-color: var(--grey-700);
}

.focus-box.visible {
    opacity: 1;
    transform: translateY(0);
}

.focus-box:hover {
    background: var(--grey-50);
    transform: translateY(-4px);
}

.section.dark .focus-box:hover {
    background: var(--grey-700);
}

.num {
    font-size: 0.75rem;
    color: var(--grey-500);
    margin-bottom: 1rem;
    letter-spacing: 0.1em;
}

.focus-box h3 {
    color: var(--black);
}

.section.dark .focus-box h3 {
    color: var(--grey-100);
}

.focus-box p {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--grey-600);
}

.section.dark .focus-box p {
    color: #E0E0E0;
}

/* Tech List */
.tech-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.tech-item {
    padding: 1rem 1.5rem;
    background: var(--grey-100);
    border: 1px solid var(--grey-200);
    border-radius: 4px;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    transition: all 0.3s;
    color: var(--grey-700);
    opacity: 0;
    transform: translateX(-30px);
}

.section.dark .tech-item {
    background: var(--grey-800);
    border-color: var(--grey-700);
    color: #E0E0E0;
}

.tech-item.visible {
    opacity: 1;
    transform: translateX(0);
}

.tech-item:hover {
    background: var(--grey-50);
    border-color: var(--grey-300);
    transform: translateX(8px);
}

.section.dark .tech-item:hover {
    background: var(--grey-700);
    border-color: var(--grey-600);
}

/* Principles */
.principles {
    background: var(--grey-100);
    border: 1px solid var(--grey-200);
    border-radius: 4px;
    padding: 2rem;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.principles.visible {
    opacity: 1;
    transform: translateY(0);
}

.section.dark .principles {
    background: var(--grey-800);
    border-color: var(--grey-700);
}

.principles h3 {
    margin-bottom: 1.5rem;
}

.principles ul {
    list-style: none;
}

.principles li {
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--grey-600);
    position: relative;
    font-size: 0.95rem;
}

.section.dark .principles li {
    color: #E0E0E0;
}

.principles li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--grey-400);
}

/* Vision Grid */
.vision-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.vision-box {
    background: var(--grey-100);
    border: 1px solid var(--grey-200);
    border-radius: 4px;
    padding: 2.5rem;
    transition: all 0.3s;
    opacity: 0;
    transform: scale(0.95);
}

.section.dark .vision-box {
    background: var(--grey-800);
    border-color: var(--grey-700);
}

.vision-box.visible {
    opacity: 1;
    transform: scale(1);
}

.vision-box:hover {
    background: var(--grey-50);
    transform: translateY(-4px) scale(1);
}

.section.dark .vision-box:hover {
    background: var(--grey-700);
}

.vision-box h3 {
    margin-bottom: 1rem;
    color: var(--black);
}

.section.dark .vision-box h3 {
    color: #F5F5F5;
}

.vision-box p {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--grey-600);
}

.section.dark .vision-box p {
    color: #E0E0E0;
}

/* Contact Form */
.help-list {
    list-style: none;
    margin: 1.5rem 0;
    padding: 0;
}

.help-list li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--grey-600);
    line-height: 1.6;
}

.help-list li::before {
    content: '>';
    position: absolute;
    left: 0;
    color: var(--black);
    font-weight: 700;
}

.section.dark .help-list li {
    color: #E0E0E0;
}

.section.dark .help-list li::before {
    color: var(--grey-200);
}

form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

input,
textarea {
    width: 100%;
    padding: 1rem 1.5rem;
    background: var(--grey-100);
    border: 1px solid var(--grey-200);
    border-radius: 4px;
    color: var(--black);
    font-family: inherit;
    font-size: 0.9rem;
    letter-spacing: 0.02em;
    transition: all 0.3s;
}

.section.dark input,
.section.dark textarea {
    background: var(--grey-800);
    border-color: var(--grey-700);
    color: var(--white);
}

input::placeholder,
textarea::placeholder {
    color: var(--grey-500);
}

input:focus,
textarea:focus {
    outline: none;
    background: var(--grey-50);
    border-color: var(--grey-300);
}

.section.dark input:focus,
.section.dark textarea:focus {
    background: var(--grey-700);
    border-color: var(--grey-600);
}

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

button {
    padding: 1rem 2rem;
    background: var(--black);
    color: var(--white);
    border: none;
    border-radius: 4px;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all 0.3s;
}

.section.dark button {
    background: var(--white);
    color: var(--black);
}

button:hover {
    background: var(--grey-800);
    transform: translateY(-2px);
}

.section.dark button:hover {
    background: var(--grey-200);
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.form-status {
    padding: 1rem;
    border-radius: 4px;
    text-align: center;
    font-size: 0.85rem;
    display: none;
}

.form-status.success {
    display: block;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #10b981;
}

.form-status.error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
}

/* Footer */
footer {
    background: var(--white);
    border-top: 1px solid var(--grey-200);
    padding: 3rem 2rem;
    position: relative;
}

footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

footer .logo {
    margin-bottom: 0.5rem;
}

footer p {
    color: var(--grey-500);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
}

/* Responsive */
@media (max-width: 1024px) {
    .grid-2,
    .grid-3,
    .grid-4,
    .vision-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
}

@media (max-width: 768px) {
    header {
        padding: 1.5rem;
    }

    .hamburger {
        display: flex;
    }

    nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        max-width: 300px;
        height: 100vh;
        background: #FFFFFF;
        flex-direction: column;
        gap: 0;
        padding: 5rem 2rem 2rem;
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.3);
        transition: right 0.3s ease;
        z-index: 1001;
    }

    nav.active {
        right: 0;
    }

    /* Dark overlay behind menu */
    body.menu-open::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background: rgba(0, 0, 0, 0.7);
        z-index: 999;
    }

    nav a {
        padding: 1.25rem 0;
        border-bottom: 1px solid #E0E0E0;
        font-size: 1.1rem;
        color: #000000;
        font-weight: 700;
    }

    nav a:hover {
        transform: none;
        padding-left: 0.5rem;
        color: #000000;
    }

    nav a::after {
        display: none;
    }

    .section {
        padding: 4rem 1.5rem;
    }

    h1 {
        font-size: 3rem;
    }

    h2 {
        font-size: 1.5rem;
    }
}