/* ===========================
   Reset & Base Styles
   =========================== */

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

:root {
    /* Colors - Nova Paleta akdmi (Tema Claro) */
    --color-primary: #1E3A8A;
    --color-secondary: #1e40af;
    --color-accent: #F59E0B;
    --color-accent-light: #fbbf24;
    --color-title: #1E3A8A;
    --color-text: #111827;
    --color-text-light: #6b7280;
    --color-background: #FFFFFF;
    --color-background-alt: #f9fafb;
    --color-border: #e5e7eb;
    
    /* Typography */
    --font-primary: 'Fira Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.875rem;
    --font-size-sm: 1rem;
    --font-size-base: 1.125rem;
    --font-size-lg: 1.5rem;
    --font-size-xl: 2rem;
    --font-size-2xl: 2.5rem;
    --font-size-3xl: 3.5rem;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Effects */
    --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);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme */
[data-theme="dark"] {
    --color-primary: #60a5fa;
    --color-secondary: #93c5fd;
    --color-accent: #F59E0B;
    --color-accent-light: #fbbf24;
    --color-title: #f3f4f6;
    --color-text: #e5e7eb;
    --color-text-light: #9ca3af;
    --color-background: #111827;
    --color-background-alt: #1f2937;
    --color-border: #374151;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.5);
}

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

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-background);
    line-height: 1.7;
    overflow-x: hidden;
}

.container {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

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

/* ===========================
   Navigation
   =========================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(var(--bg-rgb), 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition);
}

:root {
    --bg-rgb: 255, 255, 255;
}

[data-theme="dark"] {
    --bg-rgb: 13, 17, 23;
}

[data-theme="dark"] .navbar {
    background-color: rgba(13, 17, 23, 0.95);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
}

.logo {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-primary);
    letter-spacing: -0.5px;
    display: block;
    position: relative;
    height: 32px;
    min-width: 100px;
}

.logo img {
    height: 32px;
    width: auto;
    max-width: 160px;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

/* Logo switching based on theme */
.logo-light {
    display: block;
    opacity: 1;
}

.logo-dark {
    display: none;
    opacity: 0;
}

[data-theme="dark"] .logo-light {
    display: none;
    opacity: 0;
}

[data-theme="dark"] .logo-dark {
    display: block;
    opacity: 1;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 6px;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--color-accent);
}

.nav-link.btn-contact {
    background-color: var(--color-accent);
    color: white;
}

.nav-link.btn-contact:hover {
    background-color: var(--color-accent-light);
    transform: translateY(-2px);
}

/* Theme Toggle */
.theme-toggle {
    width: 40px;
    height: 40px;
    border: none;
    background-color: var(--color-background-alt);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease, transform 0.3s ease;
    color: var(--color-text);
    position: relative;
}

.theme-toggle:hover {
    background-color: var(--color-border);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-toggle svg {
    position: absolute;
    transition: all 0.3s ease;
}

.theme-toggle .sun-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.theme-toggle .moon-icon {
    opacity: 0;
    transform: rotate(180deg) scale(0);
}

[data-theme="dark"] .theme-toggle .sun-icon {
    opacity: 0;
    transform: rotate(-180deg) scale(0);
}

[data-theme="dark"] .theme-toggle .moon-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

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

.hamburger span {
    width: 25px;
    height: 2px;
    background-color: var(--color-primary);
    transition: var(--transition);
}

/* ===========================
   Hero Carousel Section
   =========================== */

.hero-carousel {
    position: relative;
    min-height: 100vh;
    overflow: hidden;
    margin-top: 80px;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease-in-out, visibility 0.8s ease-in-out;
    display: flex;
    align-items: center;
}

.hero-slide.active {
    opacity: 1;
    visibility: visible;
    position: relative;
}

.hero-slide.slide-out-left .hero-background {
    animation: slideOutLeft 0.8s ease-in-out forwards;
}

.hero-slide.slide-out-right .hero-background {
    animation: slideOutRight 0.8s ease-in-out forwards;
}

.hero-slide.slide-in-left .hero-background {
    animation: slideInLeft 0.8s ease-in-out forwards;
}

.hero-slide.slide-in-right .hero-background {
    animation: slideInRight 0.8s ease-in-out forwards;
}

.hero-slide.slide-out-left .hero-content,
.hero-slide.slide-out-right .hero-content {
    opacity: 0;
    transition: opacity 0.3s ease-out;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 0;
}

/* Slide Animations */
@keyframes slideOutLeft {
    from {
        transform: translateX(0) scale(1);
    }
    to {
        transform: translateX(-100%) scale(0.95);
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0) scale(1);
    }
    to {
        transform: translateX(100%) scale(0.95);
    }
}

@keyframes slideInLeft {
    from {
        transform: translateX(-100%) scale(0.95);
    }
    to {
        transform: translateX(0) scale(1);
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%) scale(0.95);
    }
    to {
        transform: translateX(0) scale(1);
    }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 58, 138, 0.65) 0%, rgba(30, 64, 175, 0.55) 50%, rgba(30, 58, 138, 0.65) 100%);
    z-index: 1;
}

[data-theme="dark"] .hero-overlay {
    background: linear-gradient(135deg, rgba(17, 24, 39, 0.70) 0%, rgba(31, 41, 55, 0.65) 50%, rgba(17, 24, 39, 0.70) 100%);
}

.hero-slide .container {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    max-width: none;
    margin: 0;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

.hero-content {
    max-width: 100%;
    padding-left: 0;
    padding-right: 0;
}

.hero-slide.active .hero-content {
    animation: none;
}

.hero-slide.active .hero-title {
    animation: slideUpFade 0.8s ease-out 0.2s backwards;
}

.hero-slide.active .hero-subtitle {
    animation: slideUpFade 0.8s ease-out 0.4s backwards;
}

.hero-slide.active .hero-cta {
    animation: slideUpFade 0.8s ease-out 0.6s backwards;
}

.hero-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: #FFFFFF;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.5px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    text-align: left;
}

.hero-subtitle {
    font-size: var(--font-size-base);
    color: #F3F4F6;
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
    text-shadow: 0 1px 5px rgba(0, 0, 0, 0.2);
    text-align: left;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    justify-content: flex-start;
}

/* Text Animation */
@keyframes slideUpFade {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Carousel Navigation */
.carousel-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.5);
    color: #FFFFFF;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

.carousel-nav:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.8);
    transform: translateY(-50%) scale(1.1);
}

.carousel-prev {
    left: 30px;
}

.carousel-next {
    right: 30px;
}

/* Carousel Indicators */
.carousel-indicators {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: 12px;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    border: 2px solid rgba(255, 255, 255, 0.6);
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0;
}

.indicator:hover {
    background: rgba(255, 255, 255, 0.6);
    transform: scale(1.2);
}

.indicator.active {
    background: #F59E0B;
    border-color: #F59E0B;
    width: 40px;
    border-radius: 6px;
}

/* ===========================
   Buttons
   =========================== */

.btn {
    display: inline-block;
    padding: 14px 32px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: center;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
}

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

.btn-large {
    padding: 18px 48px;
    font-size: var(--font-size-base);
}

/* ===========================
   Sections
   =========================== */

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

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

.section-header.centered {
    text-align: center;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: var(--spacing-lg);
}

.section-tag {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-title);
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}

.section-description {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    line-height: 1.7;
}

.methodology-extended-text {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.methodology-extended-text p {
    font-size: var(--font-size-base);
    color: var(--color-text);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.methodology-extended-text p:last-child {
    margin-bottom: 0;
}

.methodology-extended-text strong {
    color: var(--color-accent);
    font-weight: 600;
}

[data-theme="dark"] .methodology-extended-text strong {
    color: var(--color-accent-light);
}

/* ===========================
   Challenges Section
   =========================== */

.challenges {
    background-color: var(--color-background);
}

.challenges-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.challenges-image {
    position: relative;
}

.challenges-image img {
    width: 100%;
    height: auto;
    min-height: 300px;
    box-shadow: var(--shadow-md);
    object-fit: cover;
    display: block;
}

.challenges-text p {
    font-size: var(--font-size-lg);
    color: var(--color-text);
    line-height: 1.7;
    margin: 0;
}

.challenges-text strong {
    color: var(--color-title);
    font-weight: 600;
}

.challenges-highlight {
    grid-column: 1 / -1;
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-radius: 0px;
}

[data-theme="dark"] .challenges-highlight {
    background: linear-gradient(135deg, #1e40af 0%, #1e3a8a 100%);
}

.challenges-highlight p {
    font-size: var(--font-size-lg);
    color: white;
    line-height: 1.7;
    margin: 0;
    text-align: center;
}

.challenges-highlight strong {
    font-weight: 600;
    color: var(--color-accent);
}

.challenges-list {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background-color: var(--color-background-alt);
    border-radius: 12px;
    border-left: 4px solid var(--color-accent);
    grid-column: 1 / -1;
}

.challenges-list h3 {
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

[data-theme="dark"] .challenges-list h3 {
    color: var(--color-accent);
}

.challenges-list ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.challenges-list li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
    line-height: 1.6;
}

.challenges-list li:last-child {
    margin-bottom: 0;
}

.challenges-list li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: bold;
    font-size: 1.2rem;
}

.challenges-list li strong {
    color: var(--color-title);
    font-weight: 600;
}

/* ===========================
   Challenges Alternativas - Inspirado em Porttus
   =========================== */

/* ALTERNATIVA 1: Layout Porttus - Clean & Moderno */
.challenges-porttus {
    background-color: var(--color-background);
    padding: var(--spacing-xl) 0;
}

.challenges-porttus-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.challenges-porttus-intro {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.intro-text p {
    font-size: var(--font-size-lg);
    color: var(--color-text);
    line-height: 1.8;
    margin: 0;
}

.intro-text strong {
    color: var(--color-primary);
    font-weight: 600;
}

[data-theme="dark"] .intro-text strong {
    color: var(--color-accent);
}

.intro-image {
    position: relative;
    overflow: hidden;
}

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

.challenges-porttus-cta {
    text-align: center;
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-radius: 8px;
}

[data-theme="dark"] .challenges-porttus-cta {
    background: linear-gradient(135deg, #1e40af 0%, #1e3a8a 100%);
}

.challenges-porttus-cta p {
    font-size: var(--font-size-xl);
    color: white;
    line-height: 1.6;
    margin: 0;
    font-weight: 500;
}

.challenges-porttus-cta strong {
    font-weight: 700;
    color: var(--color-accent);
}

.challenges-porttus-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.challenge-card {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: 8px;
    border-left: 4px solid var(--color-accent);
    transition: var(--transition);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .challenge-card {
    background-color: var(--color-background-alt);
}

.challenge-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.challenge-card .card-icon {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
    opacity: 0.3;
}

.challenge-card h4 {
    font-size: var(--font-size-base);
    color: var(--color-title);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    line-height: 1.4;
}

.challenge-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: 1.6;
    margin: 0;
}

/* Layout Minimalista - Challenges Section */
.challenges-minimal {
    background-color: var(--color-background);
}

/* Layout: Coluna Esquerda (Imagem + Textos) + Coluna Direita (Lista) */
.challenges-minimal-layout {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.challenges-minimal-left {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.challenges-minimal-image img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.minimal-text-block p {
    font-size: var(--font-size-base);
    color: var(--color-text);
    line-height: 1.7;
    margin: 0;
}

.minimal-text-block strong {
    color: var(--color-accent);
    font-weight: 600;
}

.minimal-highlight {
    padding: var(--spacing-lg);
    background-color: var(--color-background-alt);
    border-left: 4px solid var(--color-accent);
    border-radius: 0 8px 8px 0;
}

[data-theme="dark"] .minimal-highlight {
    background-color: rgba(255, 255, 255, 0.03);
}

.minimal-highlight p {
    font-size: var(--font-size-base);
    color: var(--color-text);
    line-height: 1.7;
    margin: 0;
    font-weight: 500;
}

.minimal-highlight strong {
    color: var(--color-accent);
    font-weight: 600;
}

.challenges-minimal-list h3 {
    font-size: var(--font-size-xl);
    color: var(--color-title);
    margin-bottom: var(--spacing-lg);
    font-weight: 600;
    text-align: right;
}

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

.minimal-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    transition: var(--transition);
    min-height: 130px;
}

[data-theme="dark"] .minimal-item {
    background-color: rgba(255, 255, 255, 0.05);
}

.minimal-item:hover {
    background-color: rgba(255, 255, 255, 0.08);
}

.minimal-item .number {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    color: white;
    font-size: var(--font-size-lg);
    font-weight: 700;
    border-radius: 50%;
}

.minimal-item .item-content h4 {
    font-size: var(--font-size-lg);
    color: var(--color-title);
    margin-bottom: 2px;
    font-weight: 600;
    line-height: 1.3;
}

.minimal-item .item-content p {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
    line-height: 1.4;
    margin: 0;
}

/* Responsivo - Challenges Minimal */
@media (max-width: 968px) {
    .challenges-minimal-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .challenges-minimal-list h3 {
        text-align: left;
        font-size: var(--font-size-lg);
    }

    .minimal-item {
        padding: var(--spacing-sm);
    }

    .minimal-item .number {
        width: 36px;
        height: 36px;
        font-size: var(--font-size-base);
    }

    .minimal-item .item-content h4 {
        font-size: var(--font-size-xs);
    }
}

/* Estilos antigos removidos - mantidos apenas Porttus e Minimal */

/* ===========================
   About Section
   =========================== */

.about {
    background-color: var(--color-background-alt);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.about-text .lead {
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--color-title);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.about-text p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-light);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.stat {
    text-align: center;
    padding: var(--spacing-md);
    background-color: white;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .stat {
    background-color: var(--color-background-alt);
    border: 1px solid var(--color-border);
}

.stat h3 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: var(--spacing-xs);
}

.stat p {
    font-size: var(--font-size-xs);
    color: #5a6c7d;
    margin: 0;
}

[data-theme="dark"] .stat p {
    color: #a8b2c1;
}

.about-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-placeholder {
    width: 100%;
    max-width: 400px;
    color: var(--color-accent);
}

.visual-placeholder svg {
    width: 100%;
    height: auto;
}

/* ===========================
   Methodology Section
   =========================== */

.methodology {
    background-color: var(--color-background);
}

.methodology-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.methodology-card {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

[data-theme="dark"] .methodology-card {
    background-color: var(--color-background-alt);
}

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

.card-icon {
    width: 64px;
    height: 64px;
    background-color: var(--color-background-alt);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
}

[data-theme="dark"] .card-icon {
    background-color: rgba(74, 144, 226, 0.1);
}

.methodology-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-title);
    margin-bottom: var(--spacing-sm);
}

[data-theme="dark"] .methodology-card h3 {
    color: var(--color-title);
}

.methodology-card p {
    color: #5a6c7d;
    line-height: 1.7;
}

[data-theme="dark"] .methodology-card p {
    color: #a8b2c1;
}

/* Methodology Details */
.methodology-details {
    margin-top: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.methodology-detail-card {
    background-color: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

[data-theme="dark"] .methodology-detail-card {
    background-color: var(--color-background-alt);
}

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

.detail-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    min-height: 400px;
}

.detail-text {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.detail-image {
    position: relative;
    overflow: hidden;
    background-color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

[data-theme="dark"] .detail-image {
    background-color: #e5e7eb;
}

.detail-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
}

.detail-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.detail-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

[data-theme="dark"] .detail-icon {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
}

.detail-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-title);
    margin: 0;
}

[data-theme="dark"] .detail-header h3 {
    color: var(--color-title);
}

.detail-content p {
    color: var(--color-text);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
}

[data-theme="dark"] .detail-content p {
    color: var(--color-text-light);
}

.detail-features {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.detail-features li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: var(--color-text);
    line-height: 1.6;
    font-size: var(--font-size-sm);
}

[data-theme="dark"] .detail-features li {
    color: var(--color-text-light);
}

.detail-features li svg {
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--color-accent);
}

.detail-features li span {
    flex: 1;
}

/* ===========================
   Contact Section
   =========================== */

.contact-section {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    padding: var(--spacing-xl) 0;
}

[data-theme="dark"] .contact-section {
    background: linear-gradient(135deg, #1e2a6b 0%, #283990 100%);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: start;
}

.contact-info {
    color: white;
    padding-right: var(--spacing-md);
}

.contact-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: white;
    line-height: 1.2;
}

.contact-description {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
    opacity: 0.95;
}

.contact-visual {
    margin-top: var(--spacing-lg);
    position: relative;
    width: 100%;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.floating-shape {
    position: absolute;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0.1) 100%);
    border-radius: 20px;
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 200px;
    height: 250px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 150px;
    height: 180px;
    top: 40%;
    left: 50%;
    animation-delay: 2s;
}

.shape-3 {
    width: 120px;
    height: 150px;
    top: 20%;
    right: 10%;
    animation-delay: 4s;
}

.contact-highlight {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.highlight-icons {
    display: flex;
    gap: -8px;
    margin-bottom: var(--spacing-sm);
}

.icon-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 3px solid white;
    margin-left: -8px;
}

.icon-circle:first-child {
    margin-left: 0;
}

.highlight-text {
    font-size: var(--font-size-sm);
    line-height: 1.6;
    opacity: 0.9;
}

.contact-form-container {
    background-color: white;
    padding: var(--spacing-md);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .contact-form-container {
    background-color: var(--color-background-alt);
}

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

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 6px;
}

[data-theme="dark"] .form-group label {
    color: var(--color-text);
}

.form-group input,
.form-group select {
    padding: 10px 14px;
    font-size: 0.9375rem;
    font-family: var(--font-primary);
    border: 2px solid var(--color-border);
    border-radius: 8px;
    background-color: var(--color-background);
    color: var(--color-text);
    transition: var(--transition);
}

[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group select {
    background-color: var(--color-background);
    border-color: var(--color-border);
    color: var(--color-text);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(40, 57, 144, 0.1);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23404040' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

.checkbox-group {
    margin-top: 4px;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    font-size: 0.8125rem;
    color: var(--color-text-light);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    margin-top: 2px;
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.checkbox-label span {
    flex: 1;
    line-height: 1.4;
}

.checkbox-label a {
    color: var(--color-accent);
    text-decoration: underline;
}

.checkbox-label a:hover {
    color: var(--color-accent-light);
}

.btn-submit {
    margin-top: var(--spacing-sm);
    width: 100%;
    padding: 12px 32px;
    background-color: white;
    color: #283990;
    font-weight: 600;
}

.btn-submit:hover {
    background-color: #DCEAF7;
    transform: translateY(-2px);
}

/* ===========================
   Footer
   =========================== */

.footer {
    background-color: #2b2b2c;
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

[data-theme="dark"] .footer {
    background-color: rgb(32, 31, 31);
}

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

.footer-main {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--spacing-lg);
}

.footer-brand .logo {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.footer-logo-container {
    display: block;
    height: 32px;
    min-width: 100px;
    margin-bottom: var(--spacing-sm);
}

.footer-logo {
    height: 32px;
    width: auto;
    max-width: 160px;
}

/* Footer always uses white logo (footer background is always dark) */
.footer-logo-light {
    display: none;
}

.footer-logo-dark {
    display: block;
}

/* Dark theme - same behavior */
[data-theme="dark"] .footer-logo-light {
    display: none;
}

[data-theme="dark"] .footer-logo-dark {
    display: block;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: var(--spacing-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.social-link:hover {
    background-color: var(--primary-color);
    transform: translateY(-2px);
}

.social-link svg {
    width: 20px;
    height: 20px;
    fill: white;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.footer-column h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: white;
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
}

.footer-column ul li a:hover {
    color: white;
}

.footer-bottom {
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: var(--font-size-xs);
}

/* ===========================
   Success Modal
   =========================== */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 9999;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: 16px;
    text-align: center;
    max-width: 500px;
    width: 90%;
    box-shadow: var(--shadow-lg);
    animation: scaleIn 0.3s ease;
}

[data-theme="dark"] .modal-content {
    background-color: var(--color-background-alt);
}

.modal-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.modal-content h3 {
    font-size: var(--font-size-xl);
    color: var(--color-title);
    margin-bottom: var(--spacing-sm);
}

.modal-content p {
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.modal-content .btn {
    margin-top: var(--spacing-sm);
}

/* ===========================
   WhatsApp Floating Button
   =========================== */

.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    animation: float-pulse 3s ease-in-out infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1) translateY(-5px);
    box-shadow: 0 8px 20px rgba(37, 211, 102, 0.6);
    background: linear-gradient(135deg, #128C7E 0%, #25D366 100%);
}

.whatsapp-float svg {
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

@keyframes float-pulse {
    0%, 100% {
        transform: translateY(0) scale(1);
    }
    50% {
        transform: translateY(-10px) scale(1.05);
    }
}

@media (max-width: 768px) {
    .whatsapp-float {
        bottom: 20px;
        right: 20px;
        width: 56px;
        height: 56px;
    }
    
    .whatsapp-float svg {
        width: 28px;
        height: 28px;
    }
}

/* ===========================
   Animations
   =========================== */

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

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ===========================
   Responsive Design
   =========================== */

/* Desktop - Large screens */
@media (min-width: 969px) {
    .hero-slide .container {
        max-width: none;
        margin: 0;
        padding-left: 130px;
        padding-right: 600px;
    }

    .hero-content {
        max-width: none;
        width: 100%;
        padding-right: 0;
        margin-right: 0;
    }
}

@media (max-width: 968px) {
    :root {
        --font-size-3xl: 2.5rem;
        --font-size-2xl: 2rem;
        --font-size-xl: 1.5rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 60px;
        left: -100%;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-md) 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .nav-menu.active {
        background-color: var(--color-background);
    }
    
    .hero-content {
        max-width: 90%;
        padding-right: var(--spacing-md);
        margin-right: auto;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .carousel-nav {
        width: 40px;
        height: 40px;
    }

    .carousel-prev {
        left: 15px;
    }

    .carousel-next {
        right: 15px;
    }

    .carousel-indicators {
        bottom: 30px;
    }
    
    .challenges-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .challenges-image {
        order: -1;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-visual {
        display: none;
    }
    
    .methodology-grid {
        grid-template-columns: 1fr;
    }

    .methodology-details {
        margin-top: var(--spacing-lg);
    }

    .detail-wrapper {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .detail-image {
        min-height: 250px;
        order: -1;
    }

    .detail-text {
        padding: var(--spacing-md);
    }

    .detail-header {
        flex-direction: row;
        align-items: center;
    }

    .detail-header h3 {
        font-size: var(--font-size-lg);
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .contact-info {
        padding-right: 0;
        text-align: center;
    }
    
    .contact-visual {
        display: none;
    }
    
    .highlight-icons {
        justify-content: center;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 1.8rem;
        line-height: 1.4;
    }

    .hero-subtitle {
        font-size: 1.3rem;
        line-height: 1.6;
    }

    .hero-cta {
        flex-direction: row;
        gap: var(--spacing-xs);
    }
    
    .btn {
        font-size: 0.875rem;
        padding: 12px 20px;
        flex: 1;
        white-space: nowrap;
    }

    /* Hide carousel navigation arrows on mobile */
    .carousel-nav {
        display: none;
    }

    .indicator {
        width: 10px;
        height: 10px;
    }

    .indicator.active {
        width: 30px;
    }

    .carousel-indicators {
        bottom: 20px;
    }
    
    .challenges-list {
        padding: var(--spacing-md);
    }

    .challenges-list h3 {
        font-size: var(--font-size-base);
    }

    .challenges-list li {
        font-size: var(--font-size-sm);
    }

    .challenges-highlight p {
        font-size: var(--font-size-sm);
    }

    /* Challenges Minimal Responsivo */
    .challenges-minimal-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .challenges-minimal-hero img {
        max-height: 300px;
    }

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

    .minimal-item .number {
        margin: 0 auto;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }

    .detail-image {
        min-height: 200px;
    }

    .detail-icon {
        width: 48px;
        height: 48px;
    }

    .detail-icon svg {
        width: 28px;
        height: 28px;
    }

    .detail-header h3 {
        font-size: var(--font-size-base);
    }

    .detail-features {
        gap: 10px;
    }

    .detail-features li {
        font-size: var(--font-size-sm);
    }
}