/* ==========================================================================
   CSS Variables & Reset
   ========================================================================== */
:root {
    /* Colors */
    --clr-yellow: #FFB800; /* Premium Yellow */
    --clr-yellow-hover: #E5A600;
    --clr-black: #1A1A1A;
    --clr-black-light: #333333;
    --clr-grey-dark: #666666;
    --clr-grey-light: #F8F9FA;
    --clr-white: #FFFFFF;

    /* Typography */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --sp-xs: 0.5rem;
    --sp-sm: 1rem;
    --sp-md: 2rem;
    --sp-lg: 3rem;
    --sp-xl: 4.5rem;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 24px rgba(0,0,0,0.12);

    /* Transitions */
    --transition: all 0.3s ease;
}

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

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

body {
    font-family: var(--font-body);
    color: var(--clr-grey-dark);
    background-color: var(--clr-white);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--clr-black);
    line-height: 1.2;
    margin-bottom: var(--sp-sm);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 800; }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); font-weight: 700; }
h3 { font-size: 1.25rem; font-weight: 600; }

p {
    margin-bottom: var(--sp-sm);
}

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

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

/* ==========================================================================
   Utilities
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem; /* S7 safe padding */
}

.section {
    padding: var(--sp-xl) 0;
}

.bg-light {
    background-color: var(--clr-grey-light);
}

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

.section-header {
    margin-bottom: var(--sp-lg);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--clr-grey-dark);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-heading);
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: center;
}

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

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

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

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
    width: 100%;
}

@media (min-width: 768px) {
    .btn-large {
        width: auto;
    }
}

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

.service-cta {
    margin-top: var(--sp-sm);
    background-color: var(--clr-grey-dark);
    color: var(--clr-white);
}

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

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.header {
    background-color: var(--clr-white);
    box-shadow: var(--shadow-sm);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    height: 80px;
    display: flex;
    align-items: center;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 50px;
    width: auto;
    object-fit: contain;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: var(--sp-md);
}

.nav-links {
    list-style: none;
    display: flex;
    gap: var(--sp-md);
}

.nav-links a {
    font-weight: 500;
    color: var(--clr-black);
}

.nav-links a:hover {
    color: var(--clr-yellow);
}

.nav-cta {
    background-color: var(--clr-grey-dark) !important;
    color: var(--clr-white) !important;
}

.nav-cta:hover {
    background-color: var(--clr-black) !important;
}

.mobile-menu-btn {
    display: none;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: var(--sp-md);
}

.nav-links {
    list-style: none;
    display: flex;
    gap: var(--sp-md);
}

.nav-links a {
    font-weight: 500;
    color: var(--clr-black);
}

.nav-links a:hover {
    color: var(--clr-yellow);
}

@media (max-width: 991px) {
    .nav-links {
        display: none;
    }
    
    .main-nav {
        position: static;
        width: auto;
        height: auto;
        background: none;
        padding: 0;
    }

    .nav-cta {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
        background-color: var(--clr-grey-dark);
        color: var(--clr-white);
    }
    
    .nav-cta .whatsapp-icon {
        width: 18px;
    }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    padding-top: calc(80px + var(--sp-md)); /* Account for fixed header */
    padding-bottom: var(--sp-lg);
    background-color: var(--clr-white);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--sp-md);
    align-items: center;
}

.hero-content {
    text-align: center;
}

.hero-content h1 {
    margin-bottom: var(--sp-sm);
}

.hero .subheadline {
    font-size: 1.125rem;
    margin-bottom: var(--sp-md);
    color: var(--clr-grey-dark);
}

.hero-image-wrapper {
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.hero-image {
    width: 100%;
    height: auto;
    object-fit: cover;
    max-height: 350px; /* Limit height on mobile */
}

.hero-trust {
    margin-top: var(--sp-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.hero-stars {
    color: var(--clr-yellow);
    font-size: 1.15rem;
    letter-spacing: 2px;
    line-height: 1;
}

.hero-trust p {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--clr-black);
    margin: 0;
    font-family: var(--font-heading);
}

@media (min-width: 992px) {
    .hero {
        padding-top: 80px;
        min-height: 600px;
        padding-bottom: 0;
        display: flex;
        align-items: stretch;
    }
    .hero .container {
        max-width: 100%;
        padding: 0;
    }
    .hero-container {
        grid-template-columns: 1.1fr 0.9fr;
        gap: 0;
        width: 100%;
        align-items: stretch;
    }
    .hero-content {
        text-align: left;
        padding-left: max(1.5rem, calc((100vw - 1200px) / 2 + 1.5rem));
        padding-right: var(--sp-lg);
        display: flex;
        flex-direction: column;
        justify-content: center;
        padding-top: var(--sp-lg);
        padding-bottom: var(--sp-lg);
    }
    .hero-trust {
        align-items: flex-start;
    }
    .hero-image-wrapper {
        border-radius: 0;
        box-shadow: none;
        height: 100%;
    }
    .hero-image {
        height: 100%;
        max-height: none;
        width: 100%;
        object-fit: cover;
    }
}

/* Specific optimizations for S7 (360x640) and similar small devices */
@media (max-width: 375px) {
    .hero {
        padding-top: calc(80px + var(--sp-sm));
    }
    .hero-content h1 {
        font-size: 1.75rem;
    }
    .hero .subheadline {
        font-size: 1rem;
    }
    .btn-large {
        padding: 0.875rem 1.25rem;
        font-size: 1rem;
    }
}

/* ==========================================================================
   Services Section
   ========================================================================== */
.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-bottom: 2.25rem;
}

.service-card {
    background: var(--clr-white);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid rgba(0,0,0,0.05);
}

.service-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.service-card p {
    font-size: 0.9rem;
    line-height: 1.4;
}

.service-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-5px);
}

.service-icon {
    width: 68px;
    height: 68px;
    margin-bottom: 1rem;
    background-color: var(--clr-grey-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
}

.service-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.service-card h3 {
    margin-bottom: var(--sp-xs);
}

.services-final-state {
    margin-top: var(--sp-lg);
}

.section-image {
    margin-bottom: var(--sp-md);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.promo-image {
    width: 100%;
    height: auto;
    max-height: 400px;
    object-fit: cover;
}

.highlight-box {
    background-color: var(--clr-yellow);
    padding: var(--sp-md);
    border-radius: 12px;
    margin-top: var(--sp-md);
}

.highlight-box .final-state-text {
    color: var(--clr-black);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--sp-md);
    font-family: var(--font-heading);
}

@media (min-width: 768px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ==========================================================================
   Testimonials & Validation Section
   ========================================================================== */
.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--sp-md);
    margin-bottom: var(--sp-lg);
}

.testimonial-card {
    background: var(--clr-white);
    padding: var(--sp-md);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

.stars {
    color: var(--clr-yellow);
    font-size: 1.25rem;
    margin-bottom: var(--sp-xs);
    letter-spacing: 2px;
}

.review {
    font-style: italic;
    margin-bottom: var(--sp-sm);
    color: var(--clr-black-light);
}

.author {
    font-weight: 600;
    color: var(--clr-black);
    font-family: var(--font-heading);
}

@media (min-width: 768px) {
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.trust-badges {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--sp-sm);
    margin-bottom: var(--sp-lg);
}

.badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--clr-black);
}

.badge svg {
    color: var(--clr-yellow);
}

@media (min-width: 768px) {
    .trust-badges {
        flex-direction: row;
        justify-content: center;
        gap: var(--sp-lg);
    }
}

.guarantee-box {
    background-color: var(--clr-black);
    color: var(--clr-white);
    padding: var(--sp-lg) var(--sp-md);
    border-radius: 12px;
}

.guarantee-box h3 {
    color: var(--clr-yellow);
    margin-bottom: var(--sp-sm);
}

.cta-closing-text {
    font-size: 1.125rem;
    margin: var(--sp-md) 0;
}

.pulse-animation {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(255, 184, 0, 0.7); }
    70% { transform: scale(1.05); box-shadow: 0 0 0 15px rgba(255, 184, 0, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(255, 184, 0, 0); }
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--sp-md);
    align-items: center;
}

.about-image {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.about-image img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

@media (min-width: 768px) {
    .about-container {
        grid-template-columns: 1fr 1fr;
        gap: var(--sp-lg);
    }
}

/* ==========================================================================
   FAQ Section
   ========================================================================== */
.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--clr-white);
    border-radius: 8px;
    margin-bottom: var(--sp-sm);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    text-align: left;
    padding: 1.25rem;
    background: none;
    border: none;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--clr-black);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--clr-yellow);
}

.faq-question .icon {
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

.faq-question[aria-expanded="true"] .icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-answer p {
    padding: 0 1.25rem 1.25rem;
    margin: 0;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: var(--clr-black);
    color: var(--clr-white);
    padding: var(--sp-lg) 0 var(--sp-md);
}

.footer-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--sp-md);
    margin-bottom: var(--sp-md);
}

.footer-brand img {
    margin-bottom: var(--sp-sm);
    background-color: var(--clr-white); /* Add white bg for the logo if it's transparent and black */
    padding: 5px;
    border-radius: 4px;
}

.footer-contact h4 {
    color: var(--clr-yellow);
    margin-bottom: var(--sp-sm);
}

.footer-contact a {
    color: var(--clr-white);
}

.footer-contact a:hover {
    color: var(--clr-yellow);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: var(--sp-md);
    font-size: 0.875rem;
    color: #999;
}

@media (min-width: 768px) {
    .footer-container {
        grid-template-columns: 1fr 1fr;
    }
}