/* ============================================
   SACTEXIM — Modern Corporate Styles
   ============================================ */

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

:root {
    --primary:       #1f5f35;
    --primary-dark:  #062d1d;
    --primary-light: #6f8f3d;
    --accent:        #e8a838;
    --accent-dark:   #c98920;
    --dark:          #0b2118;
    --dark-2:        #071a13;
    --gray-100:      #f8f9fa;
    --gray-200:      #e9ecef;
    --gray-300:      #dee2e6;
    --gray-400:      #ced4da;
    --gray-500:      #adb5bd;
    --gray-600:      #6c757d;
    --gray-700:      #495057;
    --gray-800:      #343a40;
    --white:         #ffffff;
    --whatsapp:      #25D366;
    --shadow-sm:     0 2px 8px rgba(0,0,0,.08);
    --shadow-md:     0 8px 30px rgba(0,0,0,.12);
    --shadow-lg:     0 20px 60px rgba(0,0,0,.15);
    --radius:        12px;
    --radius-sm:     8px;
    --transition:    .3s cubic-bezier(.4,0,.2,1);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--gray-800);
    line-height: 1.6;
    background: var(--white);
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ---- HEADER ---- */
.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(255,255,255,.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-200);
    transition: var(--transition);
}

.header--scrolled {
    background: rgba(255,255,255,.98);
    box-shadow: var(--shadow-sm);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.header__logo img {
    height: 42px;
    width: auto;
}

.nav {
    display: flex;
    gap: 32px;
}

.nav__link {
    font-size: 15px;
    font-weight: 500;
    color: var(--gray-700);
    position: relative;
    transition: var(--transition);
}

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

.nav__link:hover {
    color: var(--primary);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.hamburger span {
    width: 26px;
    height: 2.5px;
    background: var(--gray-800);
    border-radius: 2px;
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

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

.hero__bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transition: opacity 1.5s ease-in-out;
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(6,45,29,.9) 0%, rgba(31,95,53,.84) 48%, rgba(11,33,24,.86) 100%);
}

.hero__inner {
    position: relative;
    z-index: 2;
    width: 100%;
    padding: 140px 24px 80px;
}

.hero__content {
    max-width: 680px;
}

.hero__title {
    font-size: clamp(2.4rem, 5vw, 4rem);
    font-weight: 800;
    color: var(--white);
    line-height: 1.1;
    margin-bottom: 12px;
    letter-spacing: -1px;
}

.hero__subtitle {
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 16px;
}

.hero__text {
    font-size: 1.1rem;
    color: rgba(255,255,255,.85);
    margin-bottom: 36px;
    line-height: 1.7;
    max-width: 560px;
}

.hero__actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* ---- BUTTONS ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: inherit;
    font-weight: 600;
    font-size: 15px;
    padding: 14px 32px;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

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

.btn--primary:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(232,168,56,.35);
}

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

.btn--whatsapp:hover {
    background: #20bd5a;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(37,211,102,.35);
}

.btn--lg {
    padding: 16px 40px;
    font-size: 16px;
}

.btn--block {
    width: 100%;
    justify-content: center;
}

/* ---- FLOATING WHATSAPP ---- */
.whatsapp-float {
    position: fixed;
    left: 24px;
    bottom: 24px;
    z-index: 1200;
    width: 58px;
    height: 58px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--whatsapp);
    color: var(--white);
    border-radius: 50%;
    font-size: 30px;
    box-shadow: 0 10px 28px rgba(37,211,102,.38);
    transition: var(--transition);
}

.whatsapp-float:hover,
.whatsapp-float:focus {
    background: #20bd5a;
    transform: translateY(-3px);
    box-shadow: 0 14px 34px rgba(37,211,102,.46);
    outline: none;
}

/* ---- SECTIONS ---- */
.section {
    padding: 100px 0;
}

.section--dark {
    background: var(--dark);
    color: var(--white);
}

.section__header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 60px;
}

.section__badge {
    display: inline-block;
    background: rgba(31,95,53,.12);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: .5px;
    margin-bottom: 12px;
}

.section--dark .section__badge {
    background: rgba(255,255,255,.1);
    color: var(--accent);
}

.section__title {
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
    letter-spacing: -.5px;
}

.section--dark .section__title {
    color: var(--white);
}

.section__desc {
    font-size: 1.05rem;
    color: var(--gray-600);
    line-height: 1.7;
}

.section--dark .section__desc {
    color: var(--gray-400);
}

/* ---- SERVICES ---- */
.services {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 28px;
}

.service-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 40px 28px;
    text-align: center;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: transparent;
}

.service-card__icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, rgba(31,95,53,.1), rgba(111,143,61,.12));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    color: var(--primary);
    transition: var(--transition);
}

.service-card:hover .service-card__icon {
    background: var(--primary);
    color: var(--white);
}

.service-card__title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--dark);
}

.service-card__desc {
    font-size: .95rem;
    color: var(--gray-600);
    line-height: 1.7;
}

/* ---- CLIENTS ---- */
.clients {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 32px;
    align-items: center;
}

.client-card {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 20px;
    background: rgba(255,255,255,.05);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: var(--radius);
    transition: var(--transition);
}

.client-card:hover {
    background: rgba(255,255,255,.1);
    border-color: var(--accent);
}

.client-card__logo {
    max-height: 52px;
    width: auto;
    filter: grayscale(1);
    opacity: .86;
    transition: var(--transition);
}

.client-card:hover .client-card__logo {
    filter: grayscale(0);
    opacity: 1;
}

/* ---- CTA ---- */
.cta {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    text-align: center;
}

.cta__title {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 700;
    color: var(--white);
    margin-bottom: 16px;
}

.cta__text {
    font-size: 1.1rem;
    color: rgba(255,255,255,.8);
    margin-bottom: 32px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

/* ---- CONTACT ---- */
.contact {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    align-items: start;
}

.contact__info {
    display: flex;
    flex-direction: column;
    gap: 24px;
    padding: 32px;
    background: var(--gray-100);
    border-radius: var(--radius);
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-item__icon {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    background: var(--white);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.contact-item strong {
    display: block;
    font-size: 13px;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: .5px;
    margin-bottom: 4px;
}

.contact-item a,
.contact-item span {
    color: var(--gray-800);
    font-weight: 500;
}

.contact-item span {
    display: block;
}

.contact-item a:hover {
    color: var(--primary);
}

/* ---- FORM ---- */
.contact-form {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 36px;
    box-shadow: var(--shadow-sm);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    font-family: inherit;
    font-size: 15px;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-sm);
    background: var(--white);
    color: var(--gray-800);
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(31,95,53,.14);
}

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

.form-status {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    font-size: 14px;
    font-weight: 500;
    display: none;
}

.form-status.success {
    display: block;
    background: #e6f7ee;
    color: #1a7a3a;
    border: 1px solid #b8e6cb;
}

.form-status.error {
    display: block;
    background: #fde8e8;
    color: #b91c1c;
    border: 1px solid #f5c6c6;
}

/* ---- FOOTER ---- */
.footer {
    background: var(--dark-2);
    color: var(--gray-300);
    padding: 60px 0 0;
}

.footer__inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer__logo {
    height: 44px;
    width: auto;
    filter: brightness(0) invert(1);
    margin-bottom: 16px;
}

.footer__brand p {
    font-size: .95rem;
    color: var(--gray-400);
    line-height: 1.7;
    max-width: 320px;
}

.footer h4 {
    color: var(--white);
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer__links a,
.footer__contact a {
    display: block;
    color: var(--gray-400);
    font-size: 14px;
    margin-bottom: 10px;
    transition: var(--transition);
}

.footer__links a:hover,
.footer__contact a:hover {
    color: var(--accent);
}

.footer__contact span {
    display: block;
    font-size: 14px;
    color: var(--gray-400);
}

.footer__bottom {
    border-top: 1px solid rgba(255,255,255,.08);
    padding: 20px 0;
    text-align: center;
}

.footer__bottom p {
    font-size: 13px;
    color: var(--gray-500);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid var(--gray-200);
        transform: translateY(-120%);
        opacity: 0;
        transition: var(--transition);
        z-index: 999;
    }

    .nav.open {
        transform: translateY(0);
        opacity: 1;
    }

    .hamburger {
        display: flex;
    }

    .hero__actions {
        flex-direction: column;
    }

    .hero__inner {
        padding-top: 120px;
    }

    .section {
        padding: 64px 0;
    }

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

    .contact {
        grid-template-columns: 1fr;
        gap: 32px;
    }

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

    .contact-form {
        padding: 24px;
    }

    .footer__inner {
        grid-template-columns: 1fr;
        gap: 32px;
    }

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

@media (max-width: 480px) {
    .whatsapp-float {
        left: 18px;
        bottom: 18px;
        width: 54px;
        height: 54px;
        font-size: 28px;
    }

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