/* ===========================
   ROOT & RESET
   =========================== */
:root {
    --color-primary: #1a3a52;
    --color-primary-dark: #112840;
    --color-primary-light: #254e6e;
    --color-accent: #FF6B35;
    --color-accent-dark: #e55a25;
    --color-whatsapp: #25D366;
    --color-whatsapp-dark: #1db954;
    --color-text: #1e2d3d;
    --color-text-muted: #5a6a7a;
    --color-bg: #f8f9fa;
    --color-bg-alt: #ffffff;
    --color-border: #e2e8f0;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition: 0.25s ease;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.10);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.15);
    --radius: 12px;
    --radius-sm: 8px;
    --container-max: 1200px;
    --container-pad: clamp(1rem, 5vw, 2rem);
    --header-h: 72px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-h);
}

body {
    font-family: var(--font-family);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

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

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

a:hover { color: var(--color-accent-dark); }

ul { list-style: none; }

address { font-style: normal; }

/* ===========================
   UTILITIES
   =========================== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-pad);
}

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

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: 1rem;
}

.section-sub {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* ===========================
   BUTTONS
   =========================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.4rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-family);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}
.btn--primary:hover {
    background: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    color: #fff;
    box-shadow: 0 4px 16px rgba(255, 107, 53, 0.35);
}

.btn--secondary {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}
.btn--secondary:hover {
    background: var(--color-primary);
    color: #fff;
}

.btn--outline {
    background: transparent;
    color: #fff;
    border-color: rgba(255,255,255,0.6);
}
.btn--outline:hover {
    background: rgba(255,255,255,0.15);
    border-color: #fff;
    color: #fff;
}

.btn--whatsapp {
    background: var(--color-whatsapp);
    color: #fff;
    border-color: var(--color-whatsapp);
}
.btn--whatsapp:hover {
    background: var(--color-whatsapp-dark);
    border-color: var(--color-whatsapp-dark);
    color: #fff;
    box-shadow: 0 4px 16px rgba(37, 211, 102, 0.35);
}

.btn--header {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
    padding: 0.55rem 1.1rem;
    font-size: 0.9rem;
}
.btn--header:hover {
    background: var(--color-accent-dark);
    color: #fff;
}

.btn--lg {
    padding: 0.9rem 1.8rem;
    font-size: 1rem;
}

/* ===========================
   HEADER
   =========================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-h);
    background: rgba(26, 58, 82, 0.97);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.15);
    transition: background var(--transition);
}

.header.scrolled {
    background: var(--color-primary-dark);
    box-shadow: var(--shadow-md);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    gap: 1.5rem;
}

.header__logo img {
    height: 48px;
    width: auto;
    object-fit: contain;
}

/* NAV */
.nav__list {
    display: flex;
    gap: 0.25rem;
}

.nav__link {
    display: block;
    padding: 0.5rem 0.85rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255,255,255,0.85);
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
}

.nav__link:hover,
.nav__link.active {
    color: #fff;
    background: rgba(255,255,255,0.1);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: background var(--transition);
}

.hamburger:hover { background: rgba(255,255,255,0.1); }

.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===========================
   HERO
   =========================== */
.hero {
    position: relative;
    min-height: 100svh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: var(--header-h);
}

.hero__bg-slider {
    position: absolute;
    inset: 0;
}

.hero__bg-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1.2s ease;
    filter: brightness(0.45);
}

.hero__bg-slide--active {
    opacity: 1;
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(17, 40, 64, 0.55) 0%, rgba(17, 40, 64, 0.25) 60%, transparent 100%);
}

.hero__content {
    position: relative;
    z-index: 1;
    padding: 5rem var(--container-pad);
    max-width: var(--container-max);
    margin: 0 auto;
    width: 100%;
}

.hero__eyebrow {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    opacity: 0;
    animation: fadeUp 0.7s 0.3s ease forwards;
}

.hero__eyebrow::before {
    content: '';
    display: inline-block;
    width: 28px;
    height: 2px;
    background: var(--color-accent);
    flex-shrink: 0;
}

.hero__title {
    font-size: clamp(2.5rem, 7vw, 5rem);
    font-weight: 800;
    color: #fff;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
    opacity: 0;
    animation: fadeUp 0.7s 0.5s ease forwards;
}

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

.hero__sub {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: rgba(255,255,255,0.8);
    max-width: 520px;
    margin-bottom: 2.5rem;
    line-height: 1.7;
    opacity: 0;
    animation: fadeUp 0.7s 0.7s ease forwards;
}

.hero__actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeUp 0.7s 0.9s ease forwards;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

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

.hero__scroll-dot {
    display: block;
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255,255,255,0.5);
    border-radius: 12px;
    position: relative;
}

.hero__scroll-dot::after {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: rgba(255,255,255,0.7);
    border-radius: 2px;
    animation: scrollDot 1.8s infinite;
}

@keyframes scrollDot {
    0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
    50%       { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

/* ===========================
   WHY US
   =========================== */
.why {
    background: var(--color-primary);
    padding: 2rem 0;
}

.why__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
}

.why__item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem 2rem;
    border-right: 1px solid rgba(255,255,255,0.1);
    color: #fff;
}

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

.why__item > i {
    font-size: 1.75rem;
    color: var(--color-accent);
    flex-shrink: 0;
}

.why__item strong {
    display: block;
    font-size: 0.95rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 0.2rem;
}

.why__item span {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.65);
}

/* ===========================
   SERVICES
   =========================== */
.services {
    padding: 5rem 0;
    background: var(--color-bg);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.service-card {
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2rem 1.75rem;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}

.service-card__icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #fff5f0, #ffe8de);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-accent);
    margin-bottom: 1.25rem;
    transition: background var(--transition), color var(--transition);
}

.service-card:hover .service-card__icon {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: #fff;
}

.service-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.65rem;
    line-height: 1.3;
}

.service-card p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.65;
    margin-bottom: 0.75rem;
}

.service-card__list {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    margin-top: 0.5rem;
}

.service-card__list li {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.service-card__list li::before {
    content: '';
    width: 5px;
    height: 5px;
    background: var(--color-accent);
    border-radius: 50%;
    flex-shrink: 0;
}

.services__cta {
    margin-top: 3rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.services__cta p {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

/* ===========================
   GALLERY
   =========================== */
.gallery {
    padding: 5rem 0;
    background: var(--color-primary-dark);
}

.gallery .section-title {
    color: #fff;
}

.gallery .section-sub {
    color: rgba(255,255,255,0.65);
}

.gallery__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 0.75rem;
}

.gallery__item {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
    border-radius: var(--radius-sm);
    cursor: pointer;
    background: none;
    border: none;
    padding: 0;
    display: block;
}

.gallery__item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.gallery__item:hover img {
    transform: scale(1.07);
}

.gallery__overlay {
    position: absolute;
    inset: 0;
    background: rgba(26, 58, 82, 0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition);
    color: #fff;
    font-size: 1.5rem;
}

.gallery__item:hover .gallery__overlay,
.gallery__item:focus .gallery__overlay {
    opacity: 1;
}

.gallery__item:focus {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* Lightbox */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: rgba(0,0,0,0.94);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    animation: fadeIn 0.2s ease;
}

.lightbox[hidden] { display: none; }

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

.lightbox__content {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 90vw;
    max-height: 90vh;
}

.lightbox__content img {
    max-width: 90vw;
    max-height: 82vh;
    object-fit: contain;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    transition: opacity 0.15s ease;
}

.lightbox__counter {
    color: rgba(255,255,255,0.55);
    font-size: 0.85rem;
    margin-top: 0.75rem;
}

.lightbox__close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 44px;
    height: 44px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    color: #fff;
    font-size: 1.1rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition);
}

.lightbox__close:hover { background: rgba(255,255,255,0.2); }

.lightbox__nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    color: #fff;
    font-size: 1.1rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition);
}

.lightbox__nav:hover { background: rgba(255,255,255,0.2); }
.lightbox__prev { left: 1rem; }
.lightbox__next { right: 1rem; }

/* ===========================
   CONTACT
   =========================== */
.contact {
    padding: 5rem 0;
    background: var(--color-bg-alt);
}

.contact__grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
    align-items: start;
}

.contact__info h3 {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 1.75rem;
}

.contact__list {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin-bottom: 2rem;
}

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

.contact__list li > i {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #fff5f0, #ffe8de);
    color: var(--color-accent);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.contact__list li > div strong {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: 0.2rem;
}

.contact__list li > div a,
.contact__list li > div address {
    font-size: 1rem;
    color: var(--color-text);
    font-weight: 500;
    transition: color var(--transition);
}

.contact__list li > div a:hover { color: var(--color-accent); }

.contact__cta-buttons {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.contact__map iframe {
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    width: 100%;
    display: block;
}

/* ===========================
   FOOTER
   =========================== */
.footer {
    background: var(--color-primary-dark);
    color: rgba(255,255,255,0.75);
    padding: 4rem 0 0;
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1.5fr 1.5fr 1.5fr;
    gap: 2.5rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer__brand img {
    margin-bottom: 1rem;
    filter: brightness(1.1);
    height: 40px;
    width: auto;
}

.footer__brand p {
    font-size: 0.88rem;
    line-height: 1.7;
    color: rgba(255,255,255,0.6);
}

.footer__col h4 {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.4);
    margin-bottom: 1rem;
}

.footer__col ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer__col li {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.7);
}

.footer__col a {
    color: rgba(255,255,255,0.7);
    transition: color var(--transition);
}

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

.footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 0;
    font-size: 0.83rem;
    color: rgba(255,255,255,0.4);
    flex-wrap: wrap;
    gap: 0.5rem;
}

.footer__bottom a {
    color: var(--color-accent);
}

.footer__bottom a:hover {
    color: var(--color-accent-dark);
}

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

    .why__item:nth-child(2) { border-right: none; }
    .why__item:nth-child(3) { border-right: 1px solid rgba(255,255,255,0.1); border-top: 1px solid rgba(255,255,255,0.1); }
    .why__item:nth-child(4) { border-top: 1px solid rgba(255,255,255,0.1); border-right: none; }

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

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

@media (max-width: 768px) {
    :root {
        --header-h: 64px;
    }

    /* Mobile nav */
    .nav {
        position: fixed;
        top: var(--header-h);
        left: 0;
        right: 0;
        background: var(--color-primary-dark);
        padding: 1rem;
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: transform 0.3s ease, opacity 0.3s ease;
        box-shadow: var(--shadow-md);
        z-index: 999;
    }

    .nav.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav__list {
        flex-direction: column;
        gap: 0.25rem;
    }

    .nav__link {
        display: block;
        padding: 0.85rem 1rem;
        font-size: 1rem;
        border-radius: var(--radius-sm);
    }

    .hamburger { display: flex; }

    .btn--header span { display: none; }
    .btn--header { padding: 0.55rem 0.75rem; }

    /* Why */
    .why__grid {
        grid-template-columns: 1fr;
    }

    .why__item {
        border-right: none !important;
        border-top: 1px solid rgba(255,255,255,0.1) !important;
    }

    .why__item:first-child { border-top: none !important; }

    /* Hero */
    .hero__title { font-size: 2.4rem; }

    /* Gallery */
    .gallery__grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
    }

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

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

    /* Lightbox nav */
    .lightbox__prev { left: 0.25rem; }
    .lightbox__next { right: 0.25rem; }
}

@media (max-width: 480px) {
    .hero__actions { flex-direction: column; align-items: flex-start; }

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

    .contact__cta-buttons { flex-direction: column; }
    .contact__cta-buttons .btn { justify-content: center; }

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

/* ===========================
   REDUCED MOTION
   =========================== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
}