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

:root {
    --bg: #141414;
    --bg-secondary: #1b1b1b;
    --text: #fafafa;
    --text-muted: #888;
    --accent: #ff3d00;
    --card-bg: rgba(255, 255, 255, 0.02);
    --card-border: rgba(255, 255, 255, 0.05);
    --card-number: rgba(255, 255, 255, 0.05);
    --footer-border: rgba(255, 255, 255, 0.1);
}

body.light-mode {
    --bg: #fafafa;
    --bg-secondary: #f0f0f0;
    --text: #0a0a0a;
    --text-muted: #555;
    --card-bg: rgba(0, 0, 0, 0.02);
    --card-border: rgba(0, 0, 0, 0.08);
    --card-number: rgba(0, 0, 0, 0.05);
    --footer-border: rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Space Grotesk', sans-serif;
    background: var(--bg);
    color: var(--text);
    overflow-x: hidden;
    transition: background 0.3s ease, color 0.3s ease;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    padding: 1rem 2rem;
    background: var(--accent);
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    border-radius: 0 0 8px 8px;
    z-index: 1000;
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 0;
}

/* Focus States */
*:focus {
    outline: none;
}

*:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

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

    .hero-title .word {
        transform: translateY(0);
    }

    .hero-subtitle {
        opacity: 1;
    }

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

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 2rem 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    background: transparent;
    transition: background 0.3s ease, padding 0.3s ease;
}

nav.scrolled {
    background: var(--bg);
    padding: 1.5rem 4rem;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--card-border);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    color: var(--text);
    cursor: pointer;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    border-color: var(--accent);
}

.theme-toggle svg {
    width: 16px;
    height: 16px;
}

.theme-toggle .sun-icon {
    display: none;
}

body.light-mode .theme-toggle .sun-icon {
    display: block;
}

body.light-mode .theme-toggle .moon-icon {
    display: none;
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 30px;
    height: 30px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text);
    transition: all 0.3s ease;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg);
    z-index: 99;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.mobile-menu.active {
    opacity: 1;
    pointer-events: all;
}

.mobile-menu a {
    color: var(--text);
    text-decoration: none;
    font-size: 2rem;
    font-weight: 600;
    transition: color 0.3s ease;
}

.mobile-menu a:hover {
    color: var(--accent);
}

.logo {
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: 0.05em;
    text-decoration: none;
    color: var(--text);
}

.logo:hover {
    color: var(--accent);
}

.nav-links {
    display: flex;
    gap: 3rem;
    list-style: none;
}

.nav-links a {
    color: var(--text);
    text-decoration: none;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    position: relative;
    padding-bottom: 4px;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent);
    transition: width 0.3s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    position: relative;
    padding: 6rem 4rem 0;
}

.hero-content {
    text-align: center;
    max-width: 1400px;
}

.hero-title {
    font-size: clamp(2.5rem, 15vw, 12rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.03em;
}

.hero-title .line {
    display: block;
    overflow: hidden;
    padding-bottom: 0.15em;
}

.hero-title .word {
    display: inline-block;
    transform: translateY(100%);
    animation: revealWord 1s cubic-bezier(0.77, 0, 0.175, 1) forwards;
}

.hero-title .line:nth-child(2) .word {
    animation-delay: 0.2s;
}

@keyframes revealWord {
    to {
        transform: translateY(0);
    }
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-top: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0;
    animation: fadeIn 1s ease forwards 0.8s;
}

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

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

/* Services Section */
.services {
    padding: 7rem 4rem;
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-secondary) 100%);
}

.services-header {
    max-width: 1400px;
    margin: 0 auto 3.5rem;
}

.section-title {
    font-size: clamp(2rem, 6vw, 4rem);
    font-weight: 700;
    margin-bottom: 1rem;
}

.services-grid {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.service-card {
    padding: 3rem;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(30px);
}

.service-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--accent), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.service-card:hover::before {
    opacity: 0.1;
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: rgba(255, 61, 0, 0.3);
}

.service-number {
    font-size: 4rem;
    font-weight: 700;
    color: var(--card-number);
    position: absolute;
    top: 1rem;
    right: 2rem;
}

/* Visually hidden but accessible */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.service-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    position: relative;
}

.service-desc {
    color: var(--text-muted);
    line-height: 1.7;
    position: relative;
}

/* CTA Section */
.cta {
    padding: 9rem 4rem;
    text-align: center;
    position: relative;
}

.cta-title {
    font-size: clamp(2rem, 6vw, 4rem);
    font-weight: 700;
    line-height: 1.05;
    margin-bottom: 3rem;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem 3rem;
    background: var(--accent);
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.05em;
    border-radius: 100px;
    transition: all 0.3s ease;
}

.cta-button:hover {
    transform: scale(1.05);
    box-shadow: 0 20px 60px rgba(255, 61, 0, 0.4);
}

.cta-button svg {
    transition: transform 0.3s ease;
}

.cta-button:hover svg {
    transform: translateX(5px);
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-button-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem 3rem;
    background: transparent;
    color: var(--text);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.05em;
    border-radius: 100px;
    border: 2px solid var(--card-border);
    transition: all 0.3s ease;
}

.cta-button-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* Footer */
footer {
    padding: 4rem;
    border-top: 1px solid var(--footer-border);
    text-align: center;
    max-width: 1400px;
    margin: 0 auto;
}

.footer-text {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .services-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    nav {
        padding: 1.5rem 2rem;
    }

    .nav-links {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .mobile-menu {
        display: flex;
    }

    .hero {
        padding: 6rem 2rem 0;
    }

    .services, .cta {
        padding: 4rem 2rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    footer {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
}