/* ========================================
   Variables & Reset
   ======================================== */
:root {
    --black: #0a0a0a;
    --white: #ffffff;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;

    --font: "Space Grotesk", -apple-system, BlinkMacSystemFont, sans-serif;
    --transition: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    background: var(--black);
    color: var(--white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

ul {
    list-style: none;
}

/* ========================================
   Container
   ======================================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 4rem;
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.25rem 4rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.logo span {
    color: var(--gray-500);
}

.nav-links {
    display: flex;
    gap: 3rem;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 400;
    color: var(--gray-400);
    transition: color var(--transition);
}

.nav-links a:hover {
    color: var(--white);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 1.5px;
    background: var(--white);
    transition: var(--transition);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 8rem 4rem;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(
            to bottom,
            rgba(10, 10, 10, 0.7),
            rgba(10, 10, 10, 0.9)
        ),
        url("img/hero-bg.jpg") center/cover no-repeat;
    pointer-events: none;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 500;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 2rem;
}

.hero-title span {
    color: var(--gray-500);
}

.hero-description {
    font-size: 1.1rem;
    color: var(--gray-400);
    margin-bottom: 3rem;
    line-height: 1.8;
}

.btn-hero {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--white);
    color: var(--black);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 50px;
    transition: var(--transition);
}

.btn-hero:hover {
    transform: scale(1.05);
    box-shadow: 0 0 40px rgba(255, 255, 255, 0.2);
}

.scroll-hint {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--gray-600);
    border-radius: 20px;
    position: relative;
}

.mouse::before {
    content: "";
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 8px;
    background: var(--gray-500);
    border-radius: 3px;
    animation: scroll 2s ease-in-out infinite;
}

@keyframes scroll {
    0%,
    100% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    50% {
        opacity: 0.3;
        transform: translateX(-50%) translateY(10px);
    }
}

/* ========================================
   Sections Common
   ======================================== */
.section {
    padding: 8rem 0;
}

.section-label {
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--gray-500);
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: 4rem;
}

/* ========================================
   Services Section
   ======================================== */
.services {
    background: var(--gray-900);
}

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

.service-card {
    padding: 3rem;
    background: var(--black);
    border: 1px solid var(--gray-800);
    border-radius: 12px;
    transition: var(--transition);
}

.service-card:hover {
    border-color: var(--gray-600);
    transform: translateY(-5px);
}

.service-number {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--gray-600);
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.4rem;
    font-weight: 500;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

.service-card p {
    font-size: 0.95rem;
    color: var(--gray-400);
    line-height: 1.7;
}

/* ========================================
   Expertise Section
   ======================================== */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 3rem;
}

.expertise-category h3 {
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray-500);
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--gray-800);
}

.expertise-category ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.expertise-category li {
    font-size: 0.95rem;
    color: var(--gray-300);
    transition: color var(--transition);
}

.expertise-category li:hover {
    color: var(--white);
}

/* ========================================
   Founder Section
   ======================================== */
.founder {
    background:
        linear-gradient(
            to right,
            rgba(23, 23, 23, 0.95),
            rgba(23, 23, 23, 0.8)
        ),
        url("img/founder-bg.jpg") center/cover no-repeat;
}

.founder-wrapper {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 6rem;
    align-items: start;
}

.founder-photo {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 2rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.founder-name {
    font-size: 2.5rem;
    font-weight: 500;
    letter-spacing: -0.02em;
    margin-bottom: 0.5rem;
}

.founder-role {
    font-size: 1rem;
    color: var(--gray-400);
}

.founder-linkedin {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
    padding: 0.75rem 1.25rem;
    background: #0a66c2;
    color: var(--white);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 6px;
    transition: var(--transition);
}

.founder-linkedin:hover {
    background: #004182;
    transform: translateY(-2px);
}

.founder-linkedin svg {
    width: 18px;
    height: 18px;
}

.founder-cv {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
    margin-left: 0.75rem;
    padding: 0.75rem 1.25rem;
    background: #10b981;
    color: var(--white);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 6px;
    transition: var(--transition);
}

.founder-cv:hover {
    background: #059669;
    transform: translateY(-2px);
}

.founder-cv svg {
    width: 18px;
    height: 18px;
}

.founder-content {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.founder-bio .bio-lead {
    font-size: 1.3rem;
    line-height: 1.6;
    margin-bottom: 1rem;
    color: var(--gray-200);
}

.founder-bio p {
    color: var(--gray-400);
    line-height: 1.8;
}

.founder-highlights {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.highlight {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.highlight-icon {
    font-size: 1.5rem;
}

.highlight div {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.highlight strong {
    font-size: 0.95rem;
    font-weight: 500;
}

.highlight span {
    font-size: 0.85rem;
    color: var(--gray-500);
}

.founder-experience h3 {
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray-500);
    margin-bottom: 1.5rem;
}

.experience-timeline {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.exp-item {
    display: flex;
    gap: 2rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--gray-800);
}

.exp-date {
    font-size: 0.85rem;
    color: var(--gray-500);
    min-width: 140px;
}

.exp-title {
    font-size: 0.95rem;
    color: var(--gray-200);
}

/* ========================================
   Contact Section
   ======================================== */
.contact-header {
    text-align: center;
    margin-bottom: 4rem;
}

.contact-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 500;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-top: 1rem;
}

.contact-subtitle {
    font-size: 1.1rem;
    color: var(--gray-400);
    margin-top: 1.5rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-form-container {
    background: var(--gray-900);
    border: 1px solid var(--gray-800);
    border-radius: 16px;
    padding: 3rem;
}

.contact-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--gray-300);
}

.form-group input,
.form-group select,
.form-group textarea {
    background: var(--black);
    border: 1px solid var(--gray-700);
    border-radius: 8px;
    padding: 1rem 1.25rem;
    font-family: var(--font);
    font-size: 0.95rem;
    color: var(--white);
    transition: var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-600);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--gray-500);
    background: var(--gray-900);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23737373' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
}

.form-group select option {
    background: var(--gray-900);
    color: var(--white);
}

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

.btn-submit {
    grid-column: 1 / -1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 1.25rem 2.5rem;
    background: var(--white);
    color: var(--black);
    font-family: var(--font);
    font-size: 1rem;
    font-weight: 500;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 1rem;
}

.btn-submit svg {
    width: 20px;
    height: 20px;
    transition: var(--transition);
}

.btn-submit:hover {
    transform: scale(1.02);
    box-shadow: 0 0 40px rgba(255, 255, 255, 0.2);
}

.btn-submit:hover svg {
    transform: translateX(5px);
}

.contact-info-box h3 {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-400);
    margin-bottom: 1.5rem;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-link {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    padding: 1rem 1.25rem;
    background: var(--gray-900);
    border: 1px solid var(--gray-800);
    border-radius: 8px;
    transition: var(--transition);
}

.contact-link:hover {
    border-color: var(--gray-600);
    background: var(--gray-800);
}

.link-label {
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray-500);
}

.link-value {
    font-size: 1.1rem;
    font-weight: 400;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: 2rem 0;
    border-top: 1px solid var(--gray-800);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    font-size: 1.25rem;
    font-weight: 600;
}

.footer-logo span {
    color: var(--gray-500);
}

.footer-content p {
    font-size: 0.85rem;
    color: var(--gray-500);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 1200px) {
    .expertise-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .founder-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 1024px) {
    .nav-container {
        padding: 1.25rem 1.5rem;
    }

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

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .contact-form {
        grid-template-columns: 1fr;
    }

    .founder-highlights {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--black);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links a {
        font-size: 1.5rem;
    }

    .menu-toggle {
        display: flex;
        z-index: 1001;
    }

    .menu-toggle.active span:first-child {
        transform: rotate(45deg) translate(4px, 4px);
    }

    .menu-toggle.active span:last-child {
        transform: rotate(-45deg) translate(4px, -4px);
    }

    .hero {
        padding: 6rem 1.5rem;
    }

    .section {
        padding: 5rem 0;
    }

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

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

@media (max-width: 480px) {
    .expertise-grid {
        grid-template-columns: 1fr;
    }

    .service-card {
        padding: 2rem;
    }

    .exp-item {
        flex-direction: column;
        gap: 0.5rem;
    }
}