/* ==========================================
   Lambda-Inspired Bold Design System
   Black Background | White Text | Straight Angles
   ========================================== */

@font-face {
    font-family: 'Geist';
    src: url('fonts/geist.woff2') format('woff2'),
         url('fonts/geist.woff') format('woff');
    font-weight: 100 900;
    font-display: swap;
}

:root {
    /* Color System - High Contrast */
    --color-black: #000000;
    --color-gray-900: #0a0a0a;
    --color-gray-800: #151515;
    --color-gray-700: #1f1f1f;
    --color-gray-600: #2a2a2a;
    --color-gray-400: #666666;
    --color-gray-300: #999999;
    --color-white: #ffffff;

    /* Blue Accent System */
    --color-blue-darkest: #00298f;
    --color-blue-darker: #003acc;
    --color-blue: #0048ff;
    --color-blue-light: #2c67ff;
    --color-blue-bright: #1d7fff;
    --color-blue-sky: #4596ff;
    --color-blue-accent: #1353a7;
    --color-blue-mid: #186bd9;

    /* Typography */
    --font-family: 'Geist', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;

    /* Spacing */
    --space-2: 0.5rem;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;
    --space-48: 12rem;

    /* Container */
    --container-wide: 1600px;
    --container-max: 1200px;

    /* Transitions */
    --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================
   Base Reset
   ========================================== */

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

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

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.5;
    color: var(--color-white);
    background: var(--color-black);
    overflow-x: hidden;
    perspective: 1000px;
}

html.is-loading body {
    opacity: 0;
}

html.loaded body {
    opacity: 1;
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Smooth GPU acceleration for all animated elements */
.hero-content,
.service-card,
.experience-card,
.benefit-card,
.tech-item,
.btn {
    will-change: transform, opacity;
    transform-style: preserve-3d;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

::selection {
    background: var(--color-blue);
    color: var(--color-white);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ==========================================
   Containers
   ========================================== */

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-8);
}

.container-wide {
    max-width: var(--container-wide);
    margin: 0 auto;
    padding: 0 var(--space-12);
}

@media (max-width: 768px) {
    .container,
    .container-wide {
        padding: 0 var(--space-6);
    }
}

/* ==========================================
   Hero Section
   ========================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: var(--color-black);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    filter: blur(120px);
    opacity: 0.15;
    pointer-events: none;
    animation: pulse 12s ease-in-out infinite;
    will-change: transform, opacity;
}

.orb-1 {
    top: -10%;
    left: 10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-blue-darker), var(--color-blue-darkest), transparent);
}

.orb-2 {
    bottom: -10%;
    right: 10%;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, var(--color-blue-bright), var(--color-blue), transparent);
    animation-delay: 4s;
}

.orb-3 {
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--color-blue-mid), var(--color-blue-accent), transparent);
    animation-delay: 8s;
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.08;
        transform: scale(1);
    }
    50% {
        opacity: 0.15;
        transform: scale(1.1);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 1100px;
    animation: fadeInUp 0.8s ease forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-logo {
    margin-bottom: var(--space-16);
    animation: fadeIn 0.6s ease forwards;
}

.hero-logo img {
    height: 48px;
    margin: 0 auto;
    filter: brightness(0) invert(1);
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.hero-title {
    font-size: clamp(40px, 6.4vw, 96px);
    font-weight: 800;
    line-height: 0.95;
    margin-bottom: var(--space-8);
    letter-spacing: -0.04em;
}

.hero-title-line {
    display: block;
}

.hero-description {
    font-size: clamp(20px, 2.5vw, 28px);
    font-weight: 400;
    color: var(--color-gray-300);
    margin-bottom: var(--space-12);
    letter-spacing: -0.01em;
}

.hero-cta {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--space-12);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    opacity: 0;
    animation: fadeIn 1s ease 1.5s forwards;
}

.scroll-text {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-gray-400);
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-gray-400), transparent);
    animation: scrollAnim 2s ease-in-out infinite;
}

@keyframes scrollAnim {
    0%, 100% {
        opacity: 0.3;
    }
    50% {
        opacity: 1;
    }
}

/* ==========================================
   Buttons
   ========================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 32px;
    font-size: 15px;
    font-weight: 600;
    border: 2px solid transparent;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    text-transform: none;
    letter-spacing: -0.01em;
    position: relative;
    transform-style: preserve-3d;
}

.btn-primary {
    background: var(--color-white);
    color: var(--color-black);
    border-color: var(--color-white);
}

.btn-primary:hover {
    background: transparent;
    color: var(--color-white);
    box-shadow: 0 10px 40px rgba(255, 255, 255, 0.2);
}

.btn-secondary {
    background: transparent;
    color: var(--color-white);
    border-color: var(--color-gray-600);
}

.btn-secondary:hover {
    border-color: var(--color-white);
    box-shadow: 0 10px 40px rgba(255, 255, 255, 0.15);
}

/* ==========================================
   Sections
   ========================================== */

.section {
    padding: clamp(80px, 15vh, 160px) 0;
    position: relative;
}

.section-header {
    margin-bottom: var(--space-24);
    text-align: center;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

.section-title {
    font-size: clamp(48px, 6vw, 80px);
    font-weight: 800;
    line-height: 1;
    margin-bottom: var(--space-6);
    letter-spacing: -0.04em;
}

.section-description {
    font-size: clamp(18px, 2vw, 24px);
    color: var(--color-gray-300);
    font-weight: 400;
    letter-spacing: -0.01em;
}

/* ==========================================
   What We Do Section
   ========================================== */

.what-we-do {
    background: var(--color-gray-900);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2px;
    background: var(--color-gray-700);
    border: 2px solid var(--color-gray-700);
    margin-bottom: var(--space-24);
}

.service-card {
    padding: var(--space-12);
    background: var(--color-black);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    opacity: 0;
    animation: fadeInScale 0.6s ease forwards;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(4) { animation-delay: 0.4s; }
.service-card:nth-child(5) { animation-delay: 0.5s; }
.service-card:nth-child(6) { animation-delay: 0.6s; }

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.service-card:hover {
    background: var(--color-gray-900);
    box-shadow: 0 20px 60px rgba(0, 72, 255, 0.1);
}

.service-number {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-gray-400);
    margin-bottom: var(--space-6);
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.05em;
}

.service-card h3 {
    font-size: clamp(24px, 3vw, 32px);
    font-weight: 700;
    margin-bottom: var(--space-4);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.service-card p {
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-300);
    font-weight: 400;
}

/* ==========================================
   Tech Stack
   ========================================== */

.tech-stack {
    padding: var(--space-20) 0;
    border-top: 2px solid var(--color-gray-700);
    border-bottom: 2px solid var(--color-gray-700);
}

.tech-stack-content {
    text-align: center;
}

.tech-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-gray-400);
    margin-bottom: var(--space-8);
}

.tech-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    justify-content: center;
}

.tech-item {
    padding: 12px 24px;
    background: transparent;
    border: 1px solid var(--color-gray-600);
    font-size: 14px;
    font-weight: 600;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    color: var(--color-gray-300);
    opacity: 0;
    animation: fadeIn 0.4s ease forwards;
    transform-style: preserve-3d;
}

.tech-item:nth-child(1) { animation-delay: 0.1s; }
.tech-item:nth-child(2) { animation-delay: 0.15s; }
.tech-item:nth-child(3) { animation-delay: 0.2s; }
.tech-item:nth-child(4) { animation-delay: 0.25s; }
.tech-item:nth-child(5) { animation-delay: 0.3s; }
.tech-item:nth-child(6) { animation-delay: 0.35s; }
.tech-item:nth-child(7) { animation-delay: 0.4s; }
.tech-item:nth-child(8) { animation-delay: 0.45s; }

.tech-item:hover {
    border-color: var(--color-white);
    color: var(--color-white);
    background: var(--color-gray-800);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.08);
}

/* ==========================================
   Experience Section
   ========================================== */

.experience {
    background: var(--color-black);
}

.experience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2px;
    background: var(--color-gray-700);
    border: 2px solid var(--color-gray-700);
}

.experience-card {
    padding: var(--space-12);
    background: var(--color-gray-900);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    opacity: 0;
    animation: slideInUp 0.6s ease forwards;
    transform-style: preserve-3d;
}

.experience-card:nth-child(1) { animation-delay: 0.1s; }
.experience-card:nth-child(2) { animation-delay: 0.2s; }
.experience-card:nth-child(3) { animation-delay: 0.3s; }
.experience-card:nth-child(4) { animation-delay: 0.4s; }
.experience-card:nth-child(5) { animation-delay: 0.5s; }
.experience-card:nth-child(6) { animation-delay: 0.6s; }

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.experience-card:hover {
    background: var(--color-gray-800);
    box-shadow: 0 25px 70px rgba(0, 72, 255, 0.12);
}

.experience-card.featured {
    background: var(--color-gray-800);
    position: relative;
}

.experience-card.featured::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-blue-bright), var(--color-blue-sky));
}

.experience-header {
    margin-bottom: var(--space-8);
}

.experience-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-blue-bright);
    margin-bottom: var(--space-4);
}

.experience-card h3 {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1;
}

.experience-card p {
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-300);
    margin-bottom: var(--space-8);
    flex-grow: 1;
}

.experience-stats {
    display: flex;
    gap: var(--space-12);
    padding-top: var(--space-8);
    border-top: 1px solid var(--color-gray-600);
}

.experience-stats + .experience-stats {
    border-top: none;
    padding-top: var(--space-4);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-value-text {
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 800;
    line-height: 1;
    color: var(--color-white);
    margin-bottom: var(--space-2);
}

.stat-value {
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 800;
    line-height: 1;
    color: var(--color-white);
    margin-bottom: var(--space-2);
}

.stat-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-gray-400);
}

@media (max-width: 768px) {
    .experience-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================
   Benefits Section
   ========================================== */

.benefits {
    background: var(--color-gray-900);
}

.benefits-hero {
    text-align: center;
    padding: var(--space-32) var(--space-8);
    border: 2px solid var(--color-gray-700);
    background: var(--color-black);
    margin-bottom: var(--space-24);
}

.benefit-stat-large {
    font-size: clamp(80px, 15vw, 160px);
    font-weight: 900;
    line-height: 0.9;
    color: var(--color-white);
    margin-bottom: var(--space-8);
    letter-spacing: -0.05em;
}

.benefit-text-large {
    font-size: clamp(20px, 2.5vw, 32px);
    color: var(--color-gray-300);
    max-width: 900px;
    margin: 0 auto;
    line-height: 1.3;
    font-weight: 500;
    letter-spacing: -0.02em;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2px;
    background: var(--color-gray-700);
    border: 2px solid var(--color-gray-700);
}

.benefit-card {
    padding: var(--space-12);
    background: var(--color-black);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    animation: fadeInScale 0.6s ease forwards;
    transform-style: preserve-3d;
}

.benefit-card:nth-child(1) { animation-delay: 0.1s; }
.benefit-card:nth-child(2) { animation-delay: 0.2s; }
.benefit-card:nth-child(3) { animation-delay: 0.3s; }
.benefit-card:nth-child(4) { animation-delay: 0.4s; }

.benefit-card:hover {
    background: var(--color-gray-800);
    box-shadow: 0 15px 50px rgba(0, 72, 255, 0.1);
}

.benefit-card h3 {
    font-size: clamp(24px, 3vw, 32px);
    font-weight: 700;
    margin-bottom: var(--space-4);
    letter-spacing: -0.02em;
}

.benefit-card p {
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-300);
}

/* ==========================================
   Footer
   ========================================== */

.footer {
    background: var(--color-black);
    padding: var(--space-32) 0 var(--space-12);
    border-top: 2px solid var(--color-gray-700);
}

.footer-brand {
    margin-bottom: var(--space-20);
    padding-bottom: var(--space-20);
    border-bottom: 1px solid var(--color-gray-700);
}

.footer-logo img {
    height: 36px;
    margin-bottom: var(--space-6);
    filter: brightness(0) invert(1);
}

.footer-tagline {
    font-size: 18px;
    color: var(--color-gray-400);
    font-weight: 400;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    color: var(--color-gray-400);
    flex-wrap: wrap;
    gap: var(--space-4);
}

.alpha-text {
    font-size: 12px;
    color: var(--color-gray-600);
}

@media (max-width: 768px) {
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

/* ==========================================
   Responsive
   ========================================== */

@media (max-width: 768px) {
    .hero-title {
        font-size: 48px;
    }

    .services-grid,
    .experience-grid,
    .benefits-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================
   Accessibility
   ========================================== */

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