:root {
    --oxyben-dark: #102653;
    --oxyben-blue: #009fe3;
    --oxyben-cyan: #55e2e4;
    --oxyben-white: #ffffff;
    --oxyben-light: #f4f8fb;
    --oxyben-alt: #e8f4fa;
    --oxyben-text: #4a5568;
    --oxyben-shadow: 0 10px 40px rgba(16, 38, 83, 0.1);
    --oxyben-transition: all 0.3s ease;
}

* {
    scroll-behavior: smooth;
}

body {
    font-family: 'Montserrat', sans-serif;
    color: var(--oxyben-text);
    background-color: var(--oxyben-white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--oxyben-dark);
    font-weight: 700;
}

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

/* Navbar */
#mainNavbar {
    padding: 1rem 0;
    transition: var(--oxyben-transition);
    background: transparent;
}

#mainNavbar.scrolled {
    background: rgba(16, 38, 83, 0.97);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    padding: 0.6rem 0;
}

#mainNavbar .navbar-brand {
    padding: 0;
}

.navbar-logo {
    height: 48px;
    width: auto;
    filter: brightness(0) invert(1);
}

#mainNavbar .nav-link {
    color: var(--oxyben-white) !important;
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    padding: 0.5rem 1rem !important;
    position: relative;
}

#mainNavbar .nav-link:hover,
#mainNavbar .nav-link:focus {
    color: var(--oxyben-cyan) !important;
}

#mainNavbar .navbar-toggler {
    border-color: rgba(255, 255, 255, 0.5);
}

#mainNavbar .navbar-toggler-icon {
    filter: invert(1);
}

/* Buttons */
.btn-cta {
    background: linear-gradient(135deg, var(--oxyben-blue), var(--oxyben-cyan));
    border: none;
    color: var(--oxyben-white) !important;
    font-weight: 600;
    padding: 0.75rem 1.75rem;
    border-radius: 50px;
    transition: var(--oxyben-transition);
    box-shadow: 0 4px 15px rgba(0, 159, 227, 0.35);
}

.btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 159, 227, 0.45);
    color: var(--oxyben-white) !important;
}

.btn-outline-cta {
    border: 2px solid var(--oxyben-blue);
    color: var(--oxyben-blue);
    font-weight: 600;
    padding: 0.75rem 1.75rem;
    border-radius: 50px;
    transition: var(--oxyben-transition);
}

.btn-outline-cta:hover {
    background: var(--oxyben-blue);
    color: var(--oxyben-white);
}

/* Sections */
.section-padding {
    padding: 90px 0;
}

.section-light {
    background: var(--oxyben-white);
}

.section-alt {
    background: var(--oxyben-alt);
}

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

.section-label {
    display: inline-block;
    color: var(--oxyben-blue);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 0.75rem;
}

.section-label-light {
    color: var(--oxyben-cyan);
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: 1rem;
    line-height: 1.25;
}

.section-text {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--oxyben-text);
}

/* Hero */
.hero-section {
    position: relative;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(16, 38, 83, 0.88) 0%, rgba(16, 38, 83, 0.65) 50%, rgba(0, 159, 227, 0.4) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    padding-top: 100px;
    padding-bottom: 140px;
}

.hero-badge {
    display: inline-block;
    background: rgba(85, 226, 228, 0.2);
    color: var(--oxyben-cyan);
    font-weight: 600;
    font-size: 0.85rem;
    padding: 0.4rem 1rem;
    border-radius: 50px;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(85, 226, 228, 0.4);
}

.hero-title {
    color: var(--oxyben-white);
    font-size: clamp(2rem, 5vw, 3.25rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.25rem;
}

.hero-subtitle {
    color: rgba(255, 255, 255, 0.85);
    font-size: clamp(1rem, 2vw, 1.2rem);
    line-height: 1.7;
    margin-bottom: 0.75rem;
    max-width: 600px;
}

.hero-subtitle:last-of-type {
    margin-bottom: 2rem;
}

.hero-info-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 2;
    background: rgba(16, 38, 83, 0.95);
    padding: 1.5rem 0;
    border-top: 3px solid var(--oxyben-cyan);
}

.hero-info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    color: var(--oxyben-white);
}

.hero-info-item i {
    font-size: 1.5rem;
    color: var(--oxyben-cyan);
    flex-shrink: 0;
    margin-top: 0.15rem;
}

.hero-info-item strong {
    display: block;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--oxyben-cyan);
    margin-bottom: 0.25rem;
}

.hero-info-item span {
    font-size: 0.9rem;
    line-height: 1.5;
    opacity: 0.9;
}

/* Image frame */
.image-frame {
    position: relative;
}

.image-frame::before {
    content: '';
    position: absolute;
    top: -15px;
    right: -15px;
    width: 100%;
    height: 100%;
    border: 3px solid var(--oxyben-cyan);
    border-radius: 1rem;
    z-index: -1;
}

.image-frame img {
    box-shadow: var(--oxyben-shadow);
}

.apresentacao-carousel .carousel-item img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    box-shadow: var(--oxyben-shadow);
}

.apresentacao-carousel .carousel-indicators [data-bs-target] {
    background-color: var(--oxyben-blue);
}

.apresentacao-carousel .carousel-control-prev-icon,
.apresentacao-carousel .carousel-control-next-icon {
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.4));
}

/* Service cards */
.service-card {
    background: var(--oxyben-white);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: var(--oxyben-shadow);
    transition: var(--oxyben-transition);
    border: 1px solid rgba(0, 159, 227, 0.1);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(16, 38, 83, 0.15);
}

.service-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--oxyben-blue), var(--oxyben-cyan));
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
}

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

.service-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.75rem;
}

.service-card p {
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 0;
    color: var(--oxyben-text);
}

/* Benefit cards */
.benefit-intro h3 {
    color: var(--oxyben-white);
    font-size: 1.35rem;
    margin-bottom: 1rem;
}

.benefit-intro p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

.benefit-card {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 1rem;
    padding: 1.5rem;
    height: 100%;
    transition: var(--oxyben-transition);
}

.benefit-card:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-4px);
}

.benefit-card--hover-reveal p {
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    margin-bottom: 0;
    transition: opacity 0.3s ease, max-height 0.35s ease, margin 0.3s ease;
}

.benefit-card--hover-reveal:hover p {
    opacity: 1;
    max-height: 12rem;
    margin-top: 0.5rem;
}

.benefit-card-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--oxyben-blue), var(--oxyben-cyan));
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.benefit-card-icon i {
    font-size: 1.25rem;
    color: var(--oxyben-white);
}

.benefit-card h4 {
    color: var(--oxyben-white);
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
}

.benefit-card p {
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 0;
}

.benefit-image img {
    box-shadow: var(--oxyben-shadow);
}

/* Indication cards */
.indication-card {
    background: var(--oxyben-white);
    border-radius: 1rem;
    padding: 1.75rem;
    box-shadow: var(--oxyben-shadow);
    transition: var(--oxyben-transition);
    border-left: 4px solid var(--oxyben-blue);
}

.indication-card:hover {
    transform: translateY(-4px);
    border-left-color: var(--oxyben-cyan);
}

.indication-icon {
    width: 48px;
    height: 48px;
    background: var(--oxyben-alt);
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.indication-icon i {
    font-size: 1.25rem;
    color: var(--oxyben-blue);
}

.indication-card h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.indication-card p {
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 0;
    color: var(--oxyben-text);
}

/* FAQ */
.faq-accordion .accordion-item {
    border: none;
    margin-bottom: 1rem;
    border-radius: 0.75rem !important;
    overflow: hidden;
    box-shadow: var(--oxyben-shadow);
}

.faq-accordion .accordion-button {
    font-weight: 600;
    color: var(--oxyben-dark);
    background: var(--oxyben-white);
    padding: 1.25rem 1.5rem;
    font-size: 0.95rem;
    box-shadow: none !important;
}

.faq-accordion .accordion-button:not(.collapsed) {
    background: linear-gradient(135deg, var(--oxyben-blue), var(--oxyben-cyan));
    color: var(--oxyben-white);
}

.faq-accordion .accordion-button::after {
    filter: none;
}

.faq-accordion .accordion-button:not(.collapsed)::after {
    filter: brightness(0) invert(1);
}

.faq-accordion .accordion-body {
    padding: 1.25rem 1.5rem;
    line-height: 1.8;
    color: var(--oxyben-text);
}

/* Contact */
.contact-info-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-info-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--oxyben-blue), var(--oxyben-cyan));
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-info-icon i {
    font-size: 1.25rem;
    color: var(--oxyben-white);
}

.contact-info-item h4 {
    color: var(--oxyben-white);
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}

.contact-info-item p,
.contact-info-item a {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    margin-bottom: 0;
}

.contact-info-item a:hover {
    color: var(--oxyben-cyan);
}

.contact-social {
    display: flex;
    gap: 0.75rem;
}

.contact-social a {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--oxyben-white);
    font-size: 1.25rem;
    transition: var(--oxyben-transition);
}

.contact-social a:hover {
    background: var(--oxyben-blue);
    color: var(--oxyben-white);
    transform: translateY(-3px);
}

.contact-form-card {
    background: var(--oxyben-white);
    border-radius: 1rem;
    padding: 2.5rem;
    box-shadow: var(--oxyben-shadow);
}

.contact-form-card h3 {
    color: var(--oxyben-dark);
}

.contact-form-card .form-label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--oxyben-dark);
}

.contact-form-card .form-control,
.contact-form-card .form-select {
    border: 2px solid #e2e8f0;
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    transition: var(--oxyben-transition);
}

.contact-form-card .form-control:focus,
.contact-form-card .form-select:focus {
    border-color: var(--oxyben-blue);
    box-shadow: 0 0 0 0.2rem rgba(0, 159, 227, 0.15);
}

/* Footer */
.site-footer {
    background: #0a1a35;
    color: rgba(255, 255, 255, 0.8);
    padding: 4rem 0 2rem;
}

.footer-logo {
    height: 50px;
    filter: brightness(0) invert(1);
}

.footer-title {
    color: var(--oxyben-white);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

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

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-contact i {
    color: var(--oxyben-cyan);
    margin-top: 0.2rem;
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.8);
}

.footer-contact a:hover {
    color: var(--oxyben-cyan);
}

.footer-social {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
}

@media (min-width: 992px) {
    .footer-social {
        justify-content: flex-end;
    }
}

.footer-social a {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--oxyben-white);
    font-size: 1.25rem;
}

.footer-social a:hover {
    background: var(--oxyben-blue);
    color: var(--oxyben-white);
}

.footer-divider {
    border-color: rgba(255, 255, 255, 0.15);
    margin: 2rem 0 1.5rem;
}

.footer-developed {
    margin-top: 1.75rem;
}

.footer-developed-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--oxyben-white);
    margin-bottom: 0.75rem;
}

.footer-developed-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
    flex-wrap: wrap;
}

@media (min-width: 992px) {
    .footer-developed-logos {
        justify-content: flex-end;
    }
}

.footer-developed-logos a {
    display: inline-flex;
    align-items: center;
    opacity: 0.9;
    transition: opacity 0.2s ease;
}

.footer-developed-logos a:hover {
    opacity: 1;
}

.footer-dev-logo {
    height: 32px;
    width: auto;
    max-width: 140px;
    object-fit: contain;
}

.footer-copy {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
}

/* WhatsApp float */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 60px;
    height: 60px;
    background: #25d366;
    color: var(--oxyben-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    z-index: 1050;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.5);
    animation: pulse-whatsapp 2s infinite;
    transition: var(--oxyben-transition);
}

.whatsapp-float:hover {
    transform: scale(1.1);
    color: var(--oxyben-white);
    box-shadow: 0 6px 30px rgba(37, 211, 102, 0.6);
}

@keyframes pulse-whatsapp {
    0% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.5);
    }
    50% {
        box-shadow: 0 4px 30px rgba(37, 211, 102, 0.8), 0 0 0 10px rgba(37, 211, 102, 0.1);
    }
    100% {
        box-shadow: 0 4px 20px rgba(37, 211, 102, 0.5);
    }
}

/* Responsive */
@media (max-width: 991.98px) {
    .hero-info-bar {
        position: relative;
        margin-top: -1px;
    }

    .hero-content {
        padding-bottom: 2rem;
        min-height: auto;
    }

    .hero-section .row.min-vh-100 {
        min-height: auto !important;
        padding: 2rem 0;
    }

    #mainNavbar .navbar-collapse {
        background: rgba(16, 38, 83, 0.98);
        padding: 1rem;
        border-radius: 0.75rem;
        margin-top: 1rem;
    }

    .section-padding {
        padding: 60px 0;
    }

    .contact-form-card {
        padding: 1.5rem;
    }
}

@media (max-width: 575.98px) {
    .hero-info-item {
        margin-bottom: 0.5rem;
    }

    .image-frame::before {
        display: none;
    }
}