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

:root {
    --black: #0a0a0a;
    --white: #ffffff;
    --gray-50: #fafafa;
    --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-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-weight: 300;
    line-height: 1.7;
    color: var(--black);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

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

ul {
    list-style: none;
}

/* ===== LAYOUT ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 8rem 0;
}

.section__label {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gray-500);
    margin-bottom: 1rem;
}

.section__title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 400;
    line-height: 1.2;
    color: var(--black);
    margin-bottom: 1.5rem;
}

.section__header {
    margin-bottom: 4rem;
}

.section__footer {
    margin-top: 3rem;
    text-align: center;
}

/* ===== NAVIGATION ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: var(--transition);
    background: transparent;
}

.nav--scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    border-bottom: 1px solid var(--gray-200);
}

.nav__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav__logo-img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.nav__logo-text {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.nav__menu {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav__link {
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 0.02em;
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--black);
    transition: var(--transition);
}

.nav__link:hover::after {
    width: 100%;
}

.nav__link--cta {
    padding: 0.6rem 1.5rem;
    border: 1px solid var(--black);
    transition: var(--transition);
}

.nav__link--cta:hover {
    background: var(--black);
    color: var(--white);
}

.nav__link--cta::after {
    display: none;
}

/* Mobile Toggle */
.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav__toggle-bar {
    width: 24px;
    height: 1.5px;
    background: var(--black);
    transition: var(--transition);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

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

.btn--primary:hover {
    background: var(--gray-800);
    transform: translateY(-1px);
}

.btn--outline {
    background: transparent;
    color: var(--black);
    border: 1px solid var(--black);
}

.btn--outline:hover {
    background: var(--black);
    color: var(--white);
}

.btn--large {
    padding: 1.2rem 3rem;
}

.btn--full {
    width: 100%;
    text-align: center;
}

.link-arrow {
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 0.02em;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.link-arrow::after {
    content: '→';
    transition: var(--transition);
}

.link-arrow:hover::after {
    transform: translateX(4px);
}

/* ===== HERO ===== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero__background {
    position: absolute;
    inset: 0;
    background: url('https://images.unsplash.com/photo-1600585154340-be6161a56a0c?w=1600&q=80') center/cover no-repeat;
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(0, 0, 0, 0.7) 0%,
        rgba(0, 0, 0, 0.4) 50%,
        rgba(0, 0, 0, 0.2) 100%
    );
}

.hero__content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    color: var(--white);
}

.hero__eyebrow {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    opacity: 0.8;
}

.hero__title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 400;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero__subtitle {
    font-size: 1.1rem;
    font-weight: 300;
    line-height: 1.8;
    max-width: 500px;
    opacity: 0.85;
    margin-bottom: 2.5rem;
}

.hero__actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

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

.hero__actions .btn--primary:hover {
    background: var(--gray-200);
}

.hero__actions .btn--outline {
    border-color: var(--white);
    color: var(--white);
}

.hero__actions .btn--outline:hover {
    background: var(--white);
    color: var(--black);
}

.hero__scroll {
    position: absolute;
    bottom: 3rem;
    left: 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--white);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    opacity: 0.6;
}

.hero__scroll-line {
    width: 40px;
    height: 1px;
    background: var(--white);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleX(0.6); }
    50% { opacity: 1; transform: scaleX(1); }
}

/* ===== PHILOSOPHY ===== */
.philosophy__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

.philosophy__text .section__title {
    font-style: italic;
}

.philosophy__desc {
    color: var(--gray-600);
    margin-bottom: 2rem;
    font-size: 1rem;
    line-height: 1.8;
}

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

.stat-card {
    padding: 2rem;
    border: 1px solid var(--gray-200);
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--black);
}

.stat-card__number {
    display: block;
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 400;
    margin-bottom: 0.5rem;
}

.stat-card__number::after {
    content: '+';
}

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

/* ===== FEATURED PROJECTS ===== */
.featured__grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr;
    grid-template-rows: 500px;
    gap: 1.5rem;
}

.project-card {
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.project-card--large {
    grid-row: span 1;
}

.project-card__image {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transition: var(--transition-slow);
}

.project-card:hover .project-card__image {
    transform: scale(1.05);
}

.project-card__content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 2rem;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: var(--white);
}

.project-card__category {
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    opacity: 0.7;
}

.project-card__title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 400;
    margin-top: 0.5rem;
}

.project-card__location {
    font-size: 0.8rem;
    opacity: 0.6;
    margin-top: 0.25rem;
}

/* ===== SERVICES PREVIEW ===== */
.services-preview {
    background: var(--gray-50);
}

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

.service-card {
    padding: 2.5rem 2rem;
    border: 1px solid var(--gray-200);
    background: var(--white);
    transition: var(--transition);
}

.service-card:hover {
    border-color: var(--black);
    transform: translateY(-4px);
}

.service-card__number {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--gray-300);
    display: block;
    margin-bottom: 1.5rem;
}

.service-card__title {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.service-card__desc {
    font-size: 0.9rem;
    color: var(--gray-600);
    line-height: 1.7;
}

/* ===== TESTIMONIALS ===== */
.testimonials__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.testimonial {
    padding: 2.5rem;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.testimonial:hover {
    border-color: var(--gray-400);
}

.testimonial__text {
    font-size: 1rem;
    font-style: italic;
    line-height: 1.8;
    color: var(--gray-700);
    margin-bottom: 2rem;
}

.testimonial__author strong {
    display: block;
    font-weight: 500;
    font-size: 0.9rem;
}

.testimonial__author span {
    font-size: 0.8rem;
    color: var(--gray-500);
}

/* ===== CTA SECTION ===== */
.cta {
    background: var(--black);
    text-align: center;
}

.cta__content {
    max-width: 600px;
    margin: 0 auto;
}

.cta__title {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 400;
    color: var(--white);
    margin-bottom: 1rem;
}

.cta__text {
    color: var(--gray-400);
    margin-bottom: 2.5rem;
    font-size: 1rem;
}

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

.cta .btn--primary:hover {
    background: var(--gray-200);
}

/* ===== PAGE HERO ===== */
.page-hero {
    padding: 10rem 0 4rem;
    border-bottom: 1px solid var(--gray-200);
}

.page-hero__title {
    font-family: var(--font-heading);
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.page-hero__subtitle {
    font-size: 1.1rem;
    color: var(--gray-600);
    max-width: 500px;
}

/* ===== ABOUT PAGE ===== */
.about-intro__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.about-intro__lead {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.about-intro__text p {
    color: var(--gray-600);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.about-intro__image-wrapper {
    width: 100%;
    height: 500px;
    background-size: cover;
    background-position: center;
}

/* Values */
.values__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
}

.value-card {
    padding: 2rem 0;
    border-top: 1px solid var(--gray-200);
}

.value-card__title {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.value-card__desc {
    color: var(--gray-600);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* Process */
.process__timeline {
    max-width: 700px;
}

.process__step {
    display: flex;
    gap: 3rem;
    padding: 2.5rem 0;
    border-bottom: 1px solid var(--gray-200);
}

.process__step-number {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--gray-300);
    flex-shrink: 0;
}

.process__step-content h3 {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.process__step-content p {
    color: var(--gray-600);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===== PROJECTS PAGE ===== */
.projects__filter {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.6rem 1.5rem;
    font-family: var(--font-body);
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    background: transparent;
    border: 1px solid var(--gray-300);
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn--active {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
}

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

.project-item {
    transition: var(--transition);
}

.project-item.hidden {
    display: none;
}

.project-item__image {
    width: 100%;
    height: 350px;
    background-size: cover;
    background-position: center;
    margin-bottom: 1.5rem;
    overflow: hidden;
    transition: var(--transition-slow);
}

.project-item:hover .project-item__image {
    opacity: 0.9;
}

.project-item__category {
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gray-500);
}

.project-item__title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 400;
    margin: 0.5rem 0;
}

.project-item__meta {
    font-size: 0.8rem;
    color: var(--gray-500);
    margin-bottom: 0.75rem;
}

.project-item__desc {
    font-size: 0.9rem;
    color: var(--gray-600);
    line-height: 1.7;
}

/* ===== SERVICES DETAIL PAGE ===== */
.services-detail__list {
    max-width: 800px;
}

.service-detail {
    padding: 4rem 0;
    border-bottom: 1px solid var(--gray-200);
}

.service-detail:first-child {
    padding-top: 0;
}

.service-detail__header {
    display: flex;
    align-items: baseline;
    gap: 2rem;
    margin-bottom: 1.5rem;
}

.service-detail__number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--gray-300);
}

.service-detail__title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 400;
}

.service-detail__body p {
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.service-detail__features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.service-detail__features li {
    font-size: 0.9rem;
    color: var(--gray-700);
    padding-left: 1.5rem;
    position: relative;
}

.service-detail__features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.6em;
    width: 8px;
    height: 1px;
    background: var(--black);
}

/* ===== CONTACT PAGE ===== */
.contact__grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 5rem;
}

.contact__block {
    margin-bottom: 2.5rem;
}

.contact__block h3 {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gray-500);
    margin-bottom: 0.75rem;
}

.contact__block p,
.contact__block a {
    font-size: 1rem;
    line-height: 1.8;
}

.contact__block a:hover {
    color: var(--gray-600);
}

.contact__social li {
    margin-bottom: 0.25rem;
}

.contact__social a:hover {
    color: var(--gray-600);
}

/* ===== FORMS ===== */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gray-600);
    margin-bottom: 0.5rem;
}

.form-input {
    width: 100%;
    padding: 1rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    border: 1px solid var(--gray-300);
    background: var(--white);
    transition: var(--transition);
    appearance: none;
    border-radius: 0;
}

.form-input:focus {
    outline: none;
    border-color: var(--black);
}

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

.contact__form-success {
    text-align: center;
    padding: 4rem 2rem;
    border: 1px solid var(--gray-200);
}

.contact__form-success h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.contact__form-success p {
    color: var(--gray-600);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: 5rem 0 2rem;
}

.footer__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer__grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 4rem;
}

.footer__logo-img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 1rem;
}

.footer__tagline {
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer__heading {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gray-500);
    margin-bottom: 1.5rem;
}

.footer__links li {
    margin-bottom: 0.5rem;
}

.footer__links a {
    font-size: 0.9rem;
    transition: var(--transition);
}

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

.footer__bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: 2rem;
    font-size: 0.8rem;
}

/* ===== 404 PAGE ===== */
.error-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
}

.error-page__code {
    font-family: var(--font-heading);
    font-size: 8rem;
    color: var(--gray-200);
    line-height: 1;
}

.error-page__title {
    font-family: var(--font-heading);
    font-size: 2rem;
    margin: 1rem 0;
}

.error-page__text {
    color: var(--gray-600);
    margin-bottom: 2rem;
}

/* ===== ANIMATIONS ===== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .featured__grid {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: 400px 400px;
    }

    .project-card--large {
        grid-column: span 2;
    }

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

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

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

@media (max-width: 768px) {
    .section {
        padding: 5rem 0;
    }

    .nav__toggle {
        display: flex;
    }

    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        transition: var(--transition-slow);
    }

    .nav__menu--open {
        right: 0;
    }

    .nav__link {
        font-size: 1.5rem;
    }

    .nav__link--cta {
        font-size: 0.875rem;
    }

    .philosophy__grid,
    .about-intro__grid,
    .contact__grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .featured__grid {
        grid-template-columns: 1fr;
        grid-template-rows: 350px 300px 300px;
    }

    .project-card--large {
        grid-column: auto;
    }

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

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

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

    .service-detail__features {
        grid-template-columns: 1fr;
    }

    .footer__grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero__title {
        font-size: clamp(2rem, 8vw, 3.5rem);
    }

    .about-intro__image-wrapper {
        height: 300px;
    }

    .process__step {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1.25rem;
    }

    .hero__actions {
        flex-direction: column;
    }

    .hero__actions .btn {
        text-align: center;
    }

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

    .project-item__image {
        height: 250px;
    }
}