/* ===========================
   Design Glass - CSS Stylesheet
   =========================== */

/* ===== VARIABLES ===== */
:root {
    /* Colors - Based on glass/professional aesthetic */
    --color-primary: #0A1628;        /* Deep Navy Blue */
    --color-secondary: #29B6F6;      /* Light Blue/Cyan */
    --color-accent: #1976D2;         /* Medium Blue */
    --color-dark: #0D1B2A;           /* Darker Navy */
    --color-light: #E8F4F8;          /* Light Blue Tint */
    --color-white: #FFFFFF;
    --color-text: #2C3E50;
    --color-text-light: #7F8C8D;
    --color-border: #E0E0E0;
    --color-success: #4CAF50;
    --color-whatsapp: #25D366;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.15);
    --shadow-xl: 0 12px 48px rgba(0,0,0,0.2);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Container */
    --container-width: 1200px;
    
    /* Header Height */
    --header-height: 80px;
}

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

html {
    scroll-behavior: smooth;
    font-size: var(--font-size-base);
}

body {
    font-family: var(--font-family);
    color: var(--color-text);
    line-height: var(--line-height-base);
    background-color: var(--color-white);
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

button {
    border: none;
    outline: none;
    cursor: pointer;
    font-family: inherit;
    transition: var(--transition-base);
}

/* ===== UTILITY CLASSES ===== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.section-subtitle {
    display: inline-block;
    color: var(--color-secondary);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.section-description {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 700px;
    margin: 0 auto;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition-base);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

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

.btn-whatsapp:hover {
    background: #20BA5A;
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

/* ===== WHATSAPP FLOAT BUTTON ===== */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: var(--color-whatsapp);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    transition: var(--transition-base);
    animation: pulse 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    background: #20BA5A;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    50% {
        box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
    }
}

/* ===== HEADER/NAVIGATION ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    z-index: 999;
    transition: var(--transition-base);
}

.header.scroll-header {
    background: rgba(10, 22, 40, 0.98);
    box-shadow: var(--shadow-lg);
}

.nav {
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav__logo {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 50px;
    height: 50px;
}

.logo-img {
    height: 50px;
    width: auto;
    transition: var(--transition-base);
    display: none; /* Hidden since logo is removed */
}

.logo-img:hover {
    opacity: 0.9;
    transform: scale(1.05);
}

.nav__menu {
    display: flex;
    align-items: center;
}

.nav__list {
    display: flex;
    gap: var(--spacing-lg);
}

.nav__link {
    color: var(--color-white);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 0.5rem 0;
}

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

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

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

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(10, 22, 40, 0.85) 0%, rgba(13, 27, 42, 0.85) 100%),
                url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?w=1920&h=1080&fit=crop') center/cover;
    padding-top: var(--header-height);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><rect fill="%23ffffff" fill-opacity="0.02" width="1200" height="600"/><g fill="%23ffffff" fill-opacity="0.05"><polygon points="600,0 900,300 600,600 300,300"/><polygon points="0,300 150,450 0,600"/><polygon points="1200,300 1050,450 1200,600"/></g></svg>');
    background-size: cover;
    opacity: 0.2;
}

/* Glass Header with Logo */
.hero__glass-header {
    position: absolute;
    top: var(--header-height);
    left: 0;
    width: 100%;
    height: 280px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.hero__glass-effect {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, 
        rgba(41, 182, 246, 0.15) 0%, 
        rgba(25, 118, 210, 0.1) 25%,
        rgba(255, 255, 255, 0.08) 50%, 
        rgba(25, 118, 210, 0.1) 75%,
        rgba(41, 182, 246, 0.15) 100%);
    backdrop-filter: blur(8px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    animation: glassShine 8s ease-in-out infinite;
}

@keyframes glassShine {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

.hero__logo {
    position: relative;
    z-index: 3;
    height: 240px;
    width: auto;
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    animation: logoFloat 6s ease-in-out infinite;
}

@keyframes logoFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.hero__container {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    margin-top: 280px;
    padding: var(--spacing-xl) 0;
}

.hero__content {
    max-width: 800px;
    animation: fadeInUp 1s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero__title {
    margin-bottom: var(--spacing-lg);
}

.hero__title-main {
    display: block;
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--color-white);
    line-height: 1.1;
    margin-bottom: var(--spacing-sm);
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
}

.hero__title-sub {
    display: block;
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-secondary);
    line-height: 1.2;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.3);
}

.hero__description {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 0;
    line-height: 1.8;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.5);
}

.hero__buttons {
    display: none; /* Removed buttons */
}

/* ===== STATISTICS SECTION ===== */
.statistics {
    padding: var(--spacing-xxl) 0;
    background: var(--color-light);
    overflow: hidden;
    width: 100%;
}

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

.stat-card {
    background: var(--color-white);
    padding: 1.5rem 1rem;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    min-width: 0;
    overflow: hidden;
    word-break: break-word;
    width: 100%;
}

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

.stat-card__icon {
    font-size: 3rem;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
}

.stat-card__number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
}

.stat-card__percent {
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--color-primary);
    align-self: flex-start;
    margin-top: 0.4rem;
}

.stat-card__label {
    font-size: 1rem;
    color: var(--color-text-light);
    font-weight: 500;
}

/* ===== SERVICES SECTION ===== */
.services {
    padding: var(--spacing-xxl) 0;
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
    border: 2px solid transparent;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-secondary);
}

.service-card__icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
    color: var(--color-white);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
}

.service-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.service-card__description {
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ===== PROJECTS SECTION ===== */
.projects {
    padding: var(--spacing-xxl) 0;
    background: var(--color-light);
}

.projects__filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    background: var(--color-white);
    color: var(--color-text);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition-base);
}

.filter-btn:hover {
    border-color: var(--color-secondary);
    color: var(--color-secondary);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--color-accent), var(--color-secondary));
    color: var(--color-white);
    border-color: transparent;
}

.projects__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.project-card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.project-card__image {
    position: relative;
    overflow: hidden;
    height: 300px;
}

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

.project-card:hover .project-card__image img {
    transform: scale(1.1);
}

.project-card__overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(10, 22, 40, 0.95), transparent);
    padding: var(--spacing-lg);
    transform: translateY(100%);
    transition: var(--transition-base);
}

.project-card:hover .project-card__overlay {
    transform: translateY(0);
}

.project-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
}

.project-card__category {
    font-size: 0.875rem;
    color: var(--color-secondary);
}

/* ===== LIGHTBOX ===== */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
}

.lightbox.active {
    display: flex;
}

.lightbox__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
}

.lightbox__content {
    position: relative;
    width: 90%;
    max-width: 1200px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 1;
    animation: zoomIn 0.3s ease;
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.lightbox__close {
    position: absolute;
    top: -50px;
    right: 0;
    width: 50px;
    height: 50px;
    background: var(--color-white);
    color: var(--color-dark);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition-base);
    z-index: 3;
}

.lightbox__close:hover {
    background: var(--color-secondary);
    color: var(--color-white);
    transform: rotate(90deg);
}

.lightbox__prev,
.lightbox__next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.9);
    color: var(--color-dark);
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition-base);
    z-index: 3;
}

.lightbox__prev {
    left: -80px;
}

.lightbox__next {
    right: -80px;
}

.lightbox__prev:hover,
.lightbox__next:hover {
    background: var(--color-secondary);
    color: var(--color-white);
    transform: translateY(-50%) scale(1.1);
}

.lightbox__prev:disabled,
.lightbox__next:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.lightbox__image-wrapper {
    width: 100%;
    max-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.lightbox__image {
    max-width: 100%;
    max-height: 70vh;
    object-fit: contain;
    border-radius: var(--radius-lg);
}

.lightbox__info {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-md);
    text-align: center;
    width: 100%;
}

.lightbox__title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.lightbox__category {
    font-size: 1rem;
    color: var(--color-secondary);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.lightbox__counter {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

/* ===== CLIENTS SECTION ===== */
.clients {
    padding: var(--spacing-xxl) 0;
    background: var(--color-white);
}

.clients__carousel {
    overflow: hidden;
    position: relative;
}

.clients__track {
    display: flex;
    gap: var(--spacing-xl);
    animation: scroll 5s linear infinite;
}

.client-logo {
    flex: 0 0 auto;
    width: 200px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
}

.client-logo:hover {
    box-shadow: var(--shadow-md);
    transform: scale(1.05);
}

.client-logo img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    opacity: 0.7;
    transition: var(--transition-base);
}

.client-logo:hover img {
    opacity: 1;
}

/* Placeholder estilizado para logos de clientes */
.client-logo__placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    height: 100%;
    color: var(--color-primary);
    opacity: 0.65;
    transition: var(--transition-base);
    text-align: center;
}

.client-logo__placeholder i {
    font-size: 1.8rem;
    color: var(--color-secondary);
}

.client-logo__placeholder span {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--color-primary);
    letter-spacing: 0.02em;
    line-height: 1.2;
    white-space: nowrap;
}

.client-logo:hover .client-logo__placeholder {
    opacity: 1;
}

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

/* ===== CONTACT SECTION ===== */
.contact {
    padding: var(--spacing-xxl) 0;
    background:
        linear-gradient(135deg, rgba(10, 22, 40, 0.86) 0%, rgba(25, 118, 210, 0.75) 100%),
        url('https://images.unsplash.com/photo-1560264280-88b68371db39?w=1600&h=1000&fit=crop') center/cover no-repeat fixed;
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 22, 40, 0.1);
    z-index: 0;
}

.contact .container {
    position: relative;
    z-index: 1;
}

.contact__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.contact__info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-card {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    display: flex;
    gap: var(--spacing-md);
    transition: var(--transition-base);
}

.contact-card:hover {
    box-shadow: var(--shadow-md);
}

.contact-card--whatsapp {
    background: linear-gradient(135deg, var(--color-whatsapp), #20BA5A);
    color: var(--color-white);
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.contact-card--whatsapp .contact-card__icon {
    background: rgba(255, 255, 255, 0.2);
}

.contact-card--whatsapp .contact-card__title,
.contact-card--whatsapp .contact-card__text {
    color: var(--color-white);
}

.contact-card__icon {
    width: 50px;
    height: 50px;
    background: var(--color-light);
    color: var(--color-secondary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-card__title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.contact-card__text {
    color: var(--color-text-light);
    line-height: 1.7;
}

.contact-card__text a {
    color: var(--color-secondary);
    font-weight: 600;
}

.contact-card__text a:hover {
    text-decoration: underline;
}

.contact__form-wrapper {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 0.875rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition-base);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 3px rgba(41, 182, 246, 0.1);
}

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

/* ===== CONTACT SECTION OVERRIDES (dark bg) ===== */
.contact .section-subtitle {
    color: rgba(255, 255, 255, 0.8);
}

.contact .section-title {
    color: var(--color-white);
}

.contact .section-description {
    color: rgba(255, 255, 255, 0.75);
}

/* ===== WHATSAPP CTA BUTTON ===== */
.whatsapp-cta-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-xl) 0 var(--spacing-sm);
    background: transparent;
}

.whatsapp-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--color-whatsapp);
    color: var(--color-white);
    font-size: 1.15rem;
    font-weight: 700;
    padding: 1.1rem 2.8rem;
    border-radius: 50px;
    text-decoration: none;
    letter-spacing: 0.3px;
    box-shadow: 0 4px 18px rgba(37, 211, 102, 0.4);
    position: relative;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    animation: btnPulse 2.8s ease-in-out infinite;
}

.whatsapp-cta-btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -75%;
    width: 50%;
    height: 200%;
    background: rgba(255, 255, 255, 0.15);
    transform: skewX(-20deg);
    animation: ctaShine 3s ease-in-out infinite;
}

@keyframes btnPulse {
    0%, 100% {
        box-shadow: 0 4px 18px rgba(37, 211, 102, 0.4);
    }
    50% {
        box-shadow: 0 6px 28px rgba(37, 211, 102, 0.65);
    }
}

@keyframes ctaShine {
    0%   { left: -75%; }
    50%  { left: 125%; }
    100% { left: 125%; }
}

.whatsapp-cta-btn i {
    font-size: 1.6rem;
    flex-shrink: 0;
}

.whatsapp-cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(37, 211, 102, 0.55);
    background: #1fbb58;
    color: var(--color-white);
}

/* Keep ctaShine from old code */

/* ===== WHATSAPP SUBMIT BUTTON ===== */
.btn-whatsapp-submit {
    background: var(--color-whatsapp);
    color: var(--color-white);
    font-size: 1.1rem;
    font-weight: 700;
    border: 2px solid var(--color-whatsapp);
    transition: all 0.3s ease;
}

.btn-whatsapp-submit:hover {
    background: #1fbb58;
    border-color: #1fbb58;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
}

.btn-whatsapp-submit i {
    font-size: 1.3rem;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer__content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer__logo {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    margin-bottom: var(--spacing-md);
}

.footer-logo-img {
    height: 80px;
    width: auto;
    border-radius: var(--radius-md);
}

.footer__description {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.footer__social {
    display: flex;
    gap: var(--spacing-sm);
}

.footer__social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: var(--transition-base);
}

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

.footer__title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer__list li {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition-base);
}

.footer__list li:hover {
    color: var(--color-secondary);
    padding-left: var(--spacing-xs);
}

.footer__list a {
    color: inherit;
}

.footer__list i {
    margin-right: var(--spacing-xs);
    color: var(--color-secondary);
}

.footer__bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer__copy,
.footer__developer {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
}

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

.footer__developer a:hover {
    text-decoration: underline;
}

/* ===== SCROLL TO TOP ===== */
.scroll-top {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--color-accent);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: 999;
}

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

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

/* ===== RESPONSIVE DESIGN ===== */

/* Tablet */
@media screen and (max-width: 968px) {
    :root {
        --header-height: 70px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero__glass-header {
        top: var(--header-height);
        height: 220px;
    }
    
    .hero__logo {
        height: 180px;
    }
    
    .hero__container {
        margin-top: 220px;
    }
    
    .hero__title-main {
        font-size: 2.5rem;
    }
    
    .hero__title-sub {
        font-size: 1.5rem;
    }
    
    /* Estatísticas: 2 colunas em tablet */
    .statistics__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.75rem;
    }
    
    .stat-card {
        padding: 1.25rem 0.75rem;
    }
    
    .stat-card__icon {
        font-size: 2rem;
    }
    
    .stat-card__number {
        font-size: 2.2rem;
    }
    
    .stat-card__percent {
        font-size: 1.2rem;
        align-self: flex-start;
        margin-top: 0.35rem;
    }
    
    .stat-card__label {
        font-size: 0.9rem;
    }
    
    .contact__grid {
        grid-template-columns: 1fr;
    }
    
    .footer__content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer__about {
        grid-column: 1 / -1;
    }
}

/* Mobile */
@media screen and (max-width: 768px) {
    :root {
        --header-height: 60px;
        --spacing-xxl: 3rem;
    }
    
    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background: var(--color-primary);
        padding: var(--spacing-xxl) var(--spacing-lg);
        transition: var(--transition-base);
        box-shadow: var(--shadow-xl);
    }
    
    .nav__menu.show-menu {
        right: 0;
    }
    
    .nav__list {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .nav__link {
        font-size: 1.125rem;
    }
    
    .nav__toggle,
    .nav__close {
        display: block;
    }
    
    .nav__close {
        position: absolute;
        top: var(--spacing-md);
        right: var(--spacing-md);
    }
    
    .logo-img {
        height: 40px;
    }
    
    .hero__glass-header {
        top: var(--header-height);
        height: 180px;
    }
    
    .hero__logo {
        height: 140px;
    }
    
    .hero__container {
        margin-top: 180px;
        padding: var(--spacing-lg) 0;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .section-description {
        font-size: 1rem;
    }
    
    .hero__title-main {
        font-size: 2rem;
    }
    
    .hero__title-sub {
        font-size: 1.25rem;
    }
    
    .hero__description {
        font-size: 1rem;
    }
    
    .whatsapp-cta-wrapper {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .whatsapp-cta-btn {
        font-size: 1rem;
        padding: 1rem 1.8rem;
        text-align: center;
    }
    
    .whatsapp-cta-btn i {
        font-size: 1.4rem;
    }

    /* Container padding menor em mobile para evitar overflow */
    .container {
        padding: 0 0.75rem;
    }

    /* Estatísticas: 2 colunas em mobile */
    .statistics__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.6rem;
    }
    
    .stat-card {
        padding: 1rem 0.6rem;
    }
    
    .stat-card__icon {
        font-size: 1.6rem;
        margin-bottom: 0.4rem;
    }
    
    .stat-card__number {
        font-size: 1.6rem;
        margin-bottom: 0.15rem;
    }
    
    .stat-card__percent {
        font-size: 0.9rem;
        align-self: flex-start;
        margin-top: 0.25rem;
    }
    
    .stat-card__label {
        font-size: 0.72rem;
        line-height: 1.3;
    }
    
    .services__grid {
        grid-template-columns: 1fr;
    }
    
    .projects__filters {
        gap: var(--spacing-xs);
    }
    
    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }
    
    .projects__grid {
        grid-template-columns: 1fr;
    }
    
    /* Lightbox Mobile Adjustments */
    .lightbox__content {
        width: 95%;
        max-height: 95vh;
    }
    
    .lightbox__close {
        top: -45px;
        width: 45px;
        height: 45px;
        font-size: 1.25rem;
    }
    
    .lightbox__prev,
    .lightbox__next {
        width: 45px;
        height: 45px;
        font-size: 1.25rem;
        bottom: 10px;
        top: auto;
        transform: translateY(0);
    }
    
    .lightbox__prev {
        left: 10px;
    }
    
    .lightbox__next {
        right: 10px;
    }
    
    .lightbox__prev:hover,
    .lightbox__next:hover {
        transform: translateY(0) scale(1.05);
    }
    
    .lightbox__image-wrapper {
        max-height: 60vh;
    }
    
    .lightbox__image {
        max-height: 60vh;
    }
    
    .lightbox__info {
        padding: var(--spacing-md);
    }
    
    .lightbox__title {
        font-size: 1.125rem;
    }
    
    .lightbox__category {
        font-size: 0.875rem;
    }
    
    .footer__content {
        grid-template-columns: 1fr;
    }
    
    .footer__bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .whatsapp-float {
        bottom: 20px;
        right: 20px;
        width: 55px;
        height: 55px;
        font-size: 1.75rem;
    }
    
    .scroll-top {
        bottom: 85px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 1.125rem;
    }
}

@media screen and (max-width: 480px) {
    /* Estatísticas: 2 colunas em telas muito pequenas */
    .statistics__grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.5rem;
    }

    .stat-card {
        padding: 0.85rem 0.5rem;
        border-radius: var(--radius-md);
    }

    .stat-card__icon {
        font-size: 1.4rem;
        margin-bottom: 0.35rem;
    }

    .stat-card__number {
        font-size: 1.5rem;
    }
    
    .stat-card__percent {
        font-size: 0.85rem;
        align-self: flex-start;
        margin-top: 0.25rem;
    }
    
    .stat-card__label {
        font-size: 0.68rem;
        line-height: 1.3;
    }

    .whatsapp-cta__text {
        font-size: 1rem;
    }

    .whatsapp-cta__icon {
        font-size: 1.5rem;
    }

    .whatsapp-cta__inner {
        gap: 0.75rem;
        padding: 1rem;
    }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll reveal animation */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ===== PRELOADER (Optional) ===== */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader__spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--color-secondary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}