/* CSS Variables (Design System) */
:root {
    /* Colors - HSL format */
    --background: hsl(0, 0%, 100%);
    --foreground: hsl(222.2, 84%, 4.9%);
    --card: hsl(0, 0%, 100%);
    --card-foreground: hsl(222.2, 84%, 4.9%);
    --primary: hsl(220, 70%, 15%);
    --primary-foreground: hsl(210, 40%, 98%);
    --secondary: hsl(210, 40%, 96.1%);
    --secondary-foreground: hsl(222.2, 47.4%, 11.2%);
    --muted: hsl(220, 14%, 96%);
    --muted-foreground: hsl(220, 8.9%, 46.1%);
    --accent: hsl(45, 95%, 55%);
    --accent-foreground: hsl(220, 70%, 15%);
    --utfpr-yellow: hsl(45, 95%, 55%);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, hsl(220, 70%, 15%), hsl(45, 95%, 55%));
    --gradient-hero: linear-gradient(135deg, hsl(220, 70%, 15%) 0%, hsl(45, 95%, 55%) 100%);
    
    /* Shadows */
    --shadow-elegant: 0 10px 40px -10px hsla(220, 70%, 15%, 0.2);
    --shadow-glow: 0 0 40px hsla(45, 95%, 55%, 0.3);
    
    /* Transitions */
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Border radius */
    --radius: 0.5rem;
    --radius-md: calc(var(--radius) - 2px);
    --border: hsl(220, 13%, 91%);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--foreground);
    background-color: var(--background);
    min-height: 100vh;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background-color: hsla(0, 0%, 100%, 0.9);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo {
    height: 2.5rem;
    width: auto;
}

.brand {
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--primary);
}

.nav {
    display: none;
    align-items: center;
    gap: 2rem;
}

@media (min-width: 768px) {
    .nav {
        display: flex;
    }
}

.nav-link {
    color: var(--muted-foreground);
    text-decoration: none;
    transition: var(--transition-smooth);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition-smooth);
    cursor: pointer;
    border: none;
    text-decoration: none;
}

.btn-cta {
    background: var(--gradient-primary);
    color: var(--primary-foreground);
}

.btn-cta:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: var(--shadow-glow);
}

.btn-hero {
    background: var(--gradient-primary);
    color: var(--primary-foreground);
}

.btn-hero:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-outline {
    border: 1px solid var(--border);
    background-color: transparent;
    color: var(--foreground);
}

.hero-outline {
    background-color: hsla(0, 0%, 100%, 0.1);
    border-color: white;
    color: white;
}

.hero-outline:hover {
    background-color: white;
    color: var(--primary);
}

/* Botão do header aumentado */
.btn-sm {
    height: 2.75rem;
    padding: 0 1.5rem;
    font-size: 1rem;
}

.btn-lg {
    height: auto;
    padding: 0.75rem 2rem;
    font-size: 1rem;
}

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 5rem;
}

.hero-bg, .hero-overlay {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.hero-bg {
    background: var(--gradient-hero);
}

.hero-overlay {
    opacity: 0.2;
    background-size: cover;
    background-position: center;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    color: white;
}

.hero-inner {
    max-width: 56rem;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: hsla(0, 0%, 100%, 0.1);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border-radius: 9999px;
    padding: 0.5rem 1rem;
    margin-bottom: 1.5rem;
}

.badge-icon {
    color: var(--utfpr-yellow);
    font-weight: 600;
}

.badge-text {
    font-size: 0.875rem;
}

.hero-title {
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 3.75rem;
    }
}

.title-gradient {
    background: linear-gradient(to right, var(--utfpr-yellow), white);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.title-stars {
    font-size: 1.5rem;
}

.hero-description {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    color: hsla(0, 0%, 100%, 0.9);
    max-width: 48rem;
    margin-left: auto;
    margin-right: auto;
}

@media (min-width: 768px) {
    .hero-description {
        font-size: 1.25rem;
    }
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: center;
}

@media (min-width: 640px) {
    .hero-buttons {
        flex-direction: row;
    }
}

.hero-buttons .btn-lg {
    padding: 1rem 1.5rem;
    font-size: 1.125rem;
}

/* General Section Styles */
section {
    padding: 6rem 0;
    scroll-margin-top: 5rem;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

@media (min-width: 768px) {
    .section-title {
        font-size: 2.25rem;
    }
}

.section-description {
    font-size: 1.125rem;
    color: var(--muted-foreground);
    max-width: 42rem;
    margin: 0 auto;
}

/* Card Styles */
.card-content {
    padding: 2rem;
    text-align: center;
}

/* Highlights Section */
.highlights-section {
    background-color: hsla(220, 14%, 96%, 0.5);
}

.highlights-grid {
    display: grid;
    gap: 2rem;
    max-width: 72rem;
    margin: 0 auto;
}

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

.highlight-card {
    border-radius: var(--radius);
    background-color: var(--card);
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    border: 0;
    transition: var(--transition-smooth);
}

.highlight-card:hover {
    box-shadow: var(--shadow-elegant);
    transform: scale(1.05);
}

.highlight-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    transition: transform 0.3s ease;
}

.highlight-card:hover .highlight-icon {
    transform: scale(1.1);
}

.highlight-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--primary);
}

.highlight-description {
    color: var(--muted-foreground);
}

/* Technologies Section */
.technologies-grid {
    display: grid;
    gap: 1.5rem;
    max-width: 72rem;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .technologies-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (min-width: 1024px) {
    .technologies-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.tech-card {
    border-radius: var(--radius);
    background: linear-gradient(to bottom right, var(--card), hsla(220, 14%, 96%, 0.3));
    border: 0;
    transition: var(--transition-smooth);
}

.tech-card:hover {
    box-shadow: var(--shadow-glow);
    transform: scale(1.05);
}

.tech-card .card-content {
    padding: 1.5rem;
    text-align: left;
}

.tech-info {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.tech-icon {
    font-size: 1.875rem;
    transition: transform 0.3s ease;
}

.tech-card:hover .tech-icon {
    transform: scale(1.1);
}

.tech-title {
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.25rem;
}

.tech-subtitle {
    font-size: 0.875rem;
    color: var(--muted-foreground);
}

/* Professors Section */
.professors-section {
    background-color: hsla(220, 14%, 96%, 0.3);
}

.professors-grid {
    display: grid;
    gap: 1.5rem;
    max-width: 72rem;
    margin: 0 auto 3rem;
}

@media (min-width: 768px) {
    .professors-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (min-width: 1024px) {
    .professors-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.professor-card {
    border-radius: var(--radius);
    background: linear-gradient(to bottom right, var(--card), hsla(45, 95%, 55%, 0.05));
    border: 0;
    transition: var(--transition-smooth);
}

.professor-card:hover {
    box-shadow: var(--shadow-glow);
    transform: scale(1.05);
}

.professor-logo {
    margin-bottom: 1rem;
    transition: transform 0.3s ease;
}

.professor-card:hover .professor-logo {
    transform: scale(1.1);
}

.logo-img {
    width: 3rem;
    height: 3rem;
    margin: 0 auto;
    object-fit: contain;
}

.professor-company {
    font-weight: 700;
    color: var(--primary);
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.professor-role {
    font-size: 0.875rem;
    color: var(--muted-foreground);
    margin-bottom: 0.5rem;
}

.professor-expertise {
    font-size: 0.75rem;
    color: var(--accent);
    font-weight: 500;
}

.professors-benefits {
    background: linear-gradient(to right, hsla(220, 70%, 15%, 0.05), hsla(45, 95%, 55%, 0.05));
    border-radius: 1rem;
    padding: 2rem;
    max-width: 64rem;
    margin: 0 auto;
}

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

.benefits-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.benefits-grid {
    display: grid;
    gap: 1.5rem;
    font-size: 0.875rem;
}

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

.benefit-title {
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

/* Quality Section */
.quality-section {
    background-color: hsla(220, 14%, 96%, 0.3);
}

.quality-grid {
    display: grid;
    gap: 3rem;
    align-items: center;
    max-width: 72rem;
    margin: 0 auto;
}

@media (min-width: 1024px) {
    .quality-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.quality-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.quality-description {
    font-size: 1.125rem;
    color: var(--muted-foreground);
}

.differentials-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1rem;
}

.differentials-grid {
    display: grid;
    gap: 1rem;
}

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

.differential-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.check-icon {
    color: var(--utfpr-yellow);
}

.mec-rating {
    background-color: var(--card);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-elegant);
}

.rating-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.rating-badge {
    width: 3rem;
    height: 3rem;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1rem;
}

.rating-title {
    font-weight: 700;
    color: var(--primary);
}

.rating-subtitle {
    font-size: 0.875rem;
    color: var(--muted-foreground);
}

.quality-visual {
    position: relative;
}

.visual-content {
    background: linear-gradient(to bottom right, hsla(220, 70%, 15%, 0.1), hsla(45, 95%, 55%, 0.1));
    border-radius: var(--radius);
    padding: 3rem;
    text-align: center;
}

.visual-badge {
    width: 6rem;
    height: 6rem;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 1.5rem;
    color: white;
}

.visual-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

/* Structure Section */
.structure-grid {
    display: grid;
    gap: 1.5rem;
    max-width: 72rem;
    margin: 0 auto;
}

@media (min-width: 768px) {
    .structure-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (min-width: 1024px) {
    .structure-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.structure-card {
    border-radius: var(--radius);
    border: 1px solid var(--border);
    border-left: 4px solid var(--accent);
    background-color: var(--card);
    transition: var(--transition-smooth);
}

.structure-card:hover {
    box-shadow: var(--shadow-elegant);
    transform: scale(1.05);
}

.structure-card .card-content {
    padding: 1.5rem;
    text-align: left;
}

.structure-info {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

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

.structure-card:hover .structure-icon {
    transform: scale(1.1);
}

.structure-label {
    font-weight: 600;
    color: var(--muted-foreground);
    font-size: 0.875rem;
    margin-bottom: 0.25rem;
}

.structure-value {
    font-weight: 700;
    color: var(--primary);
    font-size: 1.125rem;
}

/* Investment Section */
.investment-section {
    background: linear-gradient(to bottom right, hsla(220, 14%, 96%, 0.5), hsla(220, 14%, 96%, 0.3));
}

.investment-content {
    max-width: 48rem;
    margin: 0 auto;
    text-align: center;
}

.investment-card {
    background: linear-gradient(to right, var(--card), hsla(220, 14%, 96%, 0.3));
    box-shadow: var(--shadow-glow);
    border-radius: var(--radius);
    overflow: hidden;
    margin-top: 3rem;
}

.investment-card .card-content {
    padding: 2rem;
}
@media (min-width: 768px) {
    .investment-card .card-content {
        padding: 3rem;
    }
}

.special-offer {
    margin-bottom: 2rem;
}

.offer-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: hsla(45, 95%, 55%, 0.1);
    border-radius: 9999px;
    padding: 0.5rem 1rem;
    margin-bottom: 1.5rem;
}

.price-amount {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

@media (min-width: 768px) {
    .price-amount {
        font-size: 3rem;
    }
}

.included-items {
    background-color: hsla(45, 95%, 55%, 0.05);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.included-title {
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1rem;
    text-align: left;
}

.included-grid {
    display: grid;
    gap: 0.75rem;
    text-align: left;
}

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

.included-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.included-item .check-icon {
    color: var(--accent);
}

.investment-btn {
    width: 100%;
}

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

.investment-note {
    font-size: 0.875rem;
    color: var(--muted-foreground);
    margin-top: 1rem;
}

/* WhatsApp Button */
.whatsapp-button {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 50;
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 50%;
    background-color: #25D366;
    color: white;
    border: none;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
    transition: var(--transition-smooth);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.whatsapp-button:hover {
    background-color: #128C7E;
    transform: scale(1.1);
}

.whatsapp-icon {
    width: 2rem;
    height: 2rem;
}