/* ========================================
   SERVICAT - Modern Construction Website
   ======================================== */

/* Variables */
:root {
    /* Colors */
    --color-primary: #87CEEB;
    --color-primary-light: #a8dcf0;
    --color-primary-dark: #5eb5d6;
    --color-secondary: #c9a227;
    --color-secondary-light: #d4b445;
    --color-accent: #e8b923;
    --color-dark: #1a202c;
    --color-gray-900: #171923;
    --color-gray-800: #1a202c;
    --color-gray-700: #2d3748;
    --color-gray-600: #4a5568;
    --color-gray-500: #718096;
    --color-gray-400: #a0aec0;
    --color-gray-300: #cbd5e0;
    --color-gray-200: #e2e8f0;
    --color-gray-100: #f7fafc;
    --color-white: #ffffff;
    --color-black: #000000;

    /* Typography */
    --font-primary: 'Montserrat', sans-serif;
    --font-secondary: 'Playfair Display', serif;

    /* Sizes */
    --header-height: 130px;
    --container-width: 1200px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-700);
    background-color: var(--color-white);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

/* Container */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Section */
.section {
    padding: 6rem 0;
}

.section__header {
    text-align: center;
    margin-bottom: 4rem;
}

.section__subtitle {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--color-secondary);
    margin-bottom: 0.75rem;
}

.section__title {
    font-family: var(--font-secondary);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 600;
    color: var(--color-primary);
    line-height: 1.2;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: 4px;
    transition: var(--transition);
    cursor: pointer;
}

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

.btn--primary:hover {
    background-color: var(--color-secondary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn--outline {
    border: 2px solid var(--color-white);
    color: var(--color-white);
    background: transparent;
}

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

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

.btn--white:hover {
    background-color: var(--color-gray-100);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn--full {
    width: 100%;
}

/* ========================================
   HEADER
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    background-color: var(--color-white);
    box-shadow: var(--shadow);
}

.header.scrolled .nav__link {
    color: var(--color-gray-700);
}

.header.scrolled .nav__link:hover,
.header.scrolled .nav__link.active {
    color: var(--color-primary);
}

.header.scrolled .logo-text,
.header.scrolled .logo-subtitle {
    color: var(--color-primary);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav__logo {
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.nav__logo-img {
    height: 75px;
    width: auto;
    transition: var(--transition);
    filter: brightness(0) invert(1);
}

.header.scrolled .nav__logo-img {
    height: 60px;
    filter: none;
}

.logo-text {
    font-family: var(--font-secondary);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 2px;
    line-height: 1;
    transition: var(--transition);
}

.logo-subtitle {
    font-size: 0.625rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-white);
    opacity: 0.8;
    transition: var(--transition);
}

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

.nav__link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-white);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-secondary);
    transition: var(--transition);
}

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

.nav__link--cta {
    background-color: var(--color-secondary);
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    color: var(--color-white) !important;
}

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

.nav__link--cta:hover {
    background-color: var(--color-secondary-light);
}

.nav__toggle,
.nav__close {
    display: none;
    font-size: 1.5rem;
    color: var(--color-white);
    cursor: pointer;
    z-index: 100;
}

.header.scrolled .nav__toggle {
    color: var(--color-primary);
}

/* ========================================
   HERO
   ======================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    background-image: url('https://images.unsplash.com/photo-1541976590-713941681591?w=1920');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(70, 150, 180, 0.95) 0%, rgba(50, 120, 150, 0.92) 100%);
}

.hero__content {
    position: relative;
    z-index: 1;
    max-width: 700px;
}

.hero__subtitle {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--color-secondary);
    margin-bottom: 1rem;
}

.hero__title {
    font-family: var(--font-secondary);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    color: var(--color-white);
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero__title span {
    color: var(--color-secondary);
}

.hero__description {
    font-size: 1.125rem;
    color: var(--color-gray-300);
    margin-bottom: 2.5rem;
    max-width: 550px;
}

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

.hero__scroll {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.hero__scroll a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    color: var(--color-white);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

/* ========================================
   STATS
   ======================================== */
.stats {
    background-color: var(--color-primary);
    padding: 4rem 0;
}

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

.stat__item {
    text-align: center;
    padding: 1.5rem;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.stat__item:last-child {
    border-right: none;
}

.stat__number {
    display: block;
    font-family: var(--font-secondary);
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--color-secondary);
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat__number::after {
    content: '+';
}

.stat__label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

.about__images {
    position: relative;
}

.about__img-wrapper {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about__img-wrapper--main {
    width: 85%;
}

.about__img-wrapper--secondary {
    position: absolute;
    bottom: -2rem;
    right: 0;
    width: 55%;
    border: 6px solid var(--color-white);
}

.about__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about__experience {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background-color: var(--color-secondary);
    color: var(--color-white);
    padding: 1.5rem 2rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.about__experience-number {
    display: block;
    font-family: var(--font-secondary);
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1;
}

.about__experience-text {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.about__content .section__subtitle {
    text-align: left;
}

.about__content .section__title {
    text-align: left;
    margin-bottom: 1.5rem;
}

.about__text {
    color: var(--color-gray-600);
    margin-bottom: 1rem;
}

.about__features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin: 2rem 0;
}

.about__feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
    color: var(--color-gray-700);
}

.about__feature i {
    color: var(--color-secondary);
    font-size: 1.25rem;
}

/* ========================================
   SERVICES
   ======================================== */
.services {
    background-color: var(--color-gray-100);
}

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

.service__card {
    background-color: var(--color-white);
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service__card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background-color: var(--color-secondary);
    transform: scaleX(0);
    transition: var(--transition);
}

.service__card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.service__card:hover::before {
    transform: scaleX(1);
}

.service__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    height: 70px;
    background-color: var(--color-primary);
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.service__icon i {
    font-size: 1.75rem;
    color: var(--color-white);
}

.service__title {
    font-family: var(--font-secondary);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.service__description {
    color: var(--color-gray-600);
    margin-bottom: 1.5rem;
    line-height: 1.7;
}

.service__link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--color-secondary);
}

.service__link i {
    transition: var(--transition);
}

.service__link:hover i {
    transform: translateX(5px);
}

/* ========================================
   PROJECTS
   ======================================== */
.projects__search {
    display: flex;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.search__input-wrapper {
    position: relative;
    width: 100%;
    max-width: 420px;
}

.search__icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-gray-400);
    font-size: 0.9rem;
    pointer-events: none;
}

.search__input {
    width: 100%;
    padding: 0.75rem 2.5rem 0.75rem 2.75rem;
    font-size: 0.9375rem;
    font-family: 'Montserrat', sans-serif;
    color: var(--color-gray-800);
    background-color: var(--color-gray-100);
    border: 2px solid transparent;
    border-radius: 4px;
    transition: var(--transition);
}

.search__input:focus {
    outline: none;
    border-color: var(--color-primary);
    background-color: var(--color-white);
    box-shadow: 0 0 0 3px rgba(135, 206, 235, 0.2);
}

.search__input::placeholder {
    color: var(--color-gray-400);
}

.search__clear {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    color: var(--color-gray-400);
    font-size: 0.85rem;
    cursor: pointer;
    padding: 0.25rem;
    transition: var(--transition);
}

.search__clear:hover {
    color: var(--color-gray-700);
}

.projects__filters {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter__btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-gray-600);
    background-color: var(--color-gray-100);
    border-radius: 4px;
    transition: var(--transition);
}

.filter__btn:hover,
.filter__btn.active {
    background-color: var(--color-primary);
    color: var(--color-white);
}

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

.project__card {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.project__card.hidden {
    display: none;
}

.project__img-wrapper {
    position: relative;
    height: 350px;
    overflow: hidden;
}

.project__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.project__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(135, 206, 235, 0.95) 0%, transparent 100%);
    display: flex;
    align-items: flex-end;
    padding: 2rem;
    opacity: 0;
    transition: var(--transition);
}

.project__card:hover .project__img {
    transform: scale(1.1);
}

.project__card:hover .project__overlay {
    opacity: 1;
}

.project__info {
    transform: translateY(20px);
    transition: var(--transition);
}

.project__card:hover .project__info {
    transform: translateY(0);
}

.project__category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-secondary);
    margin-bottom: 0.5rem;
}

.project__title {
    font-family: var(--font-secondary);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 0.5rem;
}

.project__location {
    font-size: 0.875rem;
    color: var(--color-gray-300);
    margin-bottom: 0.5rem;
}

.project__location i {
    margin-right: 0.25rem;
}

.project__desc {
    font-size: 0.8125rem;
    color: var(--color-gray-300);
    line-height: 1.5;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.project__link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--color-secondary);
}

.project__link i {
    transition: var(--transition);
}

.project__link:hover i {
    transform: translateX(5px);
}

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

/* ========================================
   CTA
   ======================================== */
.cta {
    position: relative;
    padding: 6rem 0;
    background-image: url('https://images.unsplash.com/photo-1504307651254-35680f356dfd?w=1920');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.cta__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(135, 206, 235, 0.95) 0%, rgba(94, 181, 214, 0.9) 100%);
}

.cta__content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta__title {
    font-family: var(--font-secondary);
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 1rem;
}

.cta__text {
    font-size: 1.125rem;
    color: var(--color-white);
    margin-bottom: 2rem;
}

/* ========================================
   CONTACT
   ======================================== */
.contact__grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
}

.contact__info {
    background-color: var(--color-primary);
    padding: 3rem;
    border-radius: 8px;
    color: var(--color-white);
}

.contact__info-title {
    font-family: var(--font-secondary);
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.contact__info-text {
    color: var(--color-white);
    margin-bottom: 2rem;
}

.contact__details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

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

.contact__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    flex-shrink: 0;
}

.contact__icon i {
    font-size: 1.25rem;
    color: var(--color-white);
}

.contact__text h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.contact__text p {
    font-size: 0.9375rem;
    color: var(--color-white);
}

.contact__social {
    display: flex;
    gap: 1rem;
}

.social__link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--color-white);
    transition: var(--transition);
}

.social__link:hover {
    background-color: var(--color-secondary);
    transform: translateY(-3px);
}

.contact__form {
    background-color: var(--color-white);
    padding: 3rem;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
}

.form__group {
    margin-bottom: 1.5rem;
}

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

.form__input {
    width: 100%;
    padding: 1rem 1.25rem;
    font-size: 1rem;
    border: 2px solid var(--color-gray-200);
    border-radius: 4px;
    transition: var(--transition);
    background-color: var(--color-white);
}

.form__input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form__input::placeholder {
    color: var(--color-gray-400);
}

.form__select {
    appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%234a5568' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
}

.form__textarea {
    resize: vertical;
    min-height: 120px;
}

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

.footer__grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: 3rem;
    padding-bottom: 4rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__logo {
    display: flex;
    flex-direction: column;
    margin-bottom: 0.5rem;
}

.footer__logo-img {
    max-height: 70px;
    width: auto;
    max-width: none;
    filter: brightness(0) invert(1);
}

.footer__logo .logo-text {
    color: var(--color-white);
}

.footer__logo .logo-subtitle {
    color: var(--color-gray-400);
}

.footer__description {
    color: var(--color-gray-400);
    line-height: 1.7;
}

.footer__title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--color-white);
}

.footer__list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer__list a {
    color: var(--color-gray-400);
    transition: var(--transition);
}

.footer__list a:hover {
    color: var(--color-secondary);
    padding-left: 5px;
}

.newsletter__form {
    display: flex;
    gap: 0.5rem;
}

.newsletter__input {
    flex: 1;
    padding: 0.875rem 1rem;
    border: none;
    border-radius: 4px;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
}

.newsletter__input::placeholder {
    color: var(--color-gray-400);
}

.newsletter__btn {
    padding: 0.875rem 1.25rem;
    background-color: var(--color-secondary);
    color: var(--color-white);
    border-radius: 4px;
    transition: var(--transition);
}

.newsletter__btn:hover {
    background-color: var(--color-secondary-light);
}

.footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 0;
    color: var(--color-gray-500);
    font-size: 0.875rem;
}

.footer__legal {
    display: flex;
    gap: 2rem;
}

.footer__legal a {
    color: var(--color-gray-500);
    transition: var(--transition);
}

.footer__legal a:hover {
    color: var(--color-secondary);
}

.footer__credit {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    margin-top: 0.5rem;
}

.footer__credit a {
    color: var(--color-secondary);
    font-weight: 600;
    transition: var(--transition);
}

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

/* ========================================
   SCROLL TO TOP
   ======================================== */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background-color: var(--color-secondary);
    color: var(--color-white);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.scroll-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background-color: var(--color-primary);
    transform: translateY(-5px);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media screen and (max-width: 1024px) {
    .about__grid {
        gap: 3rem;
    }

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

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

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

@media screen and (max-width: 768px) {
    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background-color: var(--color-primary);
        padding: 6rem 2rem 2rem;
        transition: var(--transition);
        box-shadow: var(--shadow-xl);
    }

    .nav__menu.show {
        right: 0;
    }

    .nav__list {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }

    .nav__link {
        font-size: 1.125rem;
        color: var(--color-white);
    }

    .nav__toggle,
    .nav__close {
        display: block;
    }

    .nav__close {
        position: absolute;
        top: 1.5rem;
        right: 1.5rem;
    }

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

    .stat__item {
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .stat__item:nth-last-child(-n+2) {
        border-bottom: none;
    }

    .about__grid {
        grid-template-columns: 1fr;
        gap: 4rem;
    }

    .about__images {
        order: -1;
    }

    .about__content .section__subtitle,
    .about__content .section__title {
        text-align: center;
    }

    .about__text {
        text-align: center;
    }

    .about__features {
        justify-items: center;
    }

    .about__content .btn {
        display: block;
        margin: 0 auto;
    }

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

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

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

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

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

    .footer__logo {
        align-items: center;
    }

    .footer__logo-img {
        margin: 0 auto;
    }

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

    .footer__legal {
        justify-content: center;
    }

    .contact__social {
        justify-content: center;
    }
}

@media screen and (max-width: 480px) {
    .hero__buttons {
        flex-direction: column;
    }

    .hero__buttons .btn {
        width: 100%;
    }

    .stat__number {
        font-size: 2.5rem;
    }

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

    .projects__filters {
        gap: 0.5rem;
    }

    .filter__btn {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }

    .contact__info,
    .contact__form {
        padding: 2rem;
    }
}

/* ========================================
   CLIENTES / TRUSTED BY
   ======================================== */

.clients {
    padding: 4rem 0;
    background: var(--color-gray-100);
    overflow: hidden;
}

.clients__header {
    text-align: center;
    margin-bottom: 3rem;
}

.clients__subtitle {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--color-secondary);
    margin-bottom: 0.5rem;
}

.clients__title {
    font-family: var(--font-secondary);
    font-size: clamp(1.5rem, 3vw, 2rem);
    color: var(--color-primary);
}

.clients__slider {
    display: flex;
    animation: scroll 30s linear infinite;
    width: max-content;
}

.clients__slider:hover {
    animation-play-state: paused;
}

.clients__track {
    display: flex;
    gap: 4rem;
    padding: 1rem 2rem;
}

.clients__logo {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 80px;
    min-width: 150px;
    padding: 1rem;
    background: var(--color-white);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.clients__logo:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.clients__logo img {
    max-height: 60px;
    max-width: 140px;
    width: auto;
    height: auto;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: var(--transition);
}

.clients__logo:hover img {
    filter: grayscale(0%);
    opacity: 1;
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

/* Versión responsive para móviles */
@media screen and (max-width: 768px) {
    .clients {
        padding: 3rem 0;
    }

    .clients__slider {
        animation: scroll 20s linear infinite;
    }

    .clients__track {
        gap: 2rem;
        padding: 1rem;
    }

    .clients__logo {
        min-width: 100px;
        height: 60px;
        padding: 0.5rem;
    }

    .clients__logo img {
        max-height: 40px;
        max-width: 80px;
        filter: grayscale(0%);
        opacity: 1;
    }
}