/* ==========================================================================
   CSS Variables & Theme Setup
   ========================================================================== */
:root {
    /* Colors */
    --clr-bg-light: #FBFDFB;
    /* White-ish background */
    --clr-bg-alt: #F5F5F0;
    /* Light beige */
    --clr-primary: #6B705C;
    /* Olive Green */
    --clr-primary-dark: #565A48;
    /* Darker Olive */
    --clr-secondary: #A5A5B6;
    /* Grayish blue */
    --clr-secondary-light: #ECEFF4;
    /* Very light grayish blue */
    --clr-text-main: #333333;
    /* Dark text */
    --clr-text-muted: #5A5A66;
    /* Muted text */
    --clr-white: #FFFFFF;

    /* Typography */
    --font-primary: 'Inter', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Shadows & Border Radius */
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 15px 35px rgba(0, 0, 0, 0.12);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 32px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--clr-bg-light);
    color: var(--clr-text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    line-height: 1.2;
    color: var(--clr-text-main);
}

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

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

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

.bg-accent {
    background-color: var(--clr-bg-alt);
}

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

.text-olive {
    color: var(--clr-primary);
}

.text-blue {
    color: var(--clr-secondary);
}

/* ==========================================================================
   Typography Utilities
   ========================================================================== */
.section-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--clr-primary-dark);
}

.section-desc {
    font-size: 1.125rem;
    color: var(--clr-text-muted);
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    font-weight: 500;
    cursor: pointer;
    border: none;
    font-size: 1rem;
    transition: all var(--transition-normal);
}

.btn-primary {
    background-color: var(--clr-primary);
    color: var(--clr-white);
    box-shadow: var(--shadow-sm);
}

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

.btn-secondary {
    background-color: var(--clr-white);
    color: var(--clr-primary);
    border: 2px solid var(--clr-primary);
}

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

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

/* ==========================================================================
   Header / Nav
   ========================================================================== */
.header {
    background-color: rgba(251, 253, 251, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
}

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

.logo {
    display: flex;
    flex-direction: column;
}

@keyframes logoEntrance {
    0% {
        opacity: 0;
        transform: translateX(-20px);
    }

    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes textGlow {

    0%,
    100% {
        text-shadow: 0 0 0px rgba(107, 112, 92, 0);
    }

    50% {
        text-shadow: 0 0 10px rgba(107, 112, 92, 0.4);
    }
}

.logo-text {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--clr-primary-dark);
    line-height: 1.1;
    letter-spacing: -0.5px;
    animation: logoEntrance 1s ease-out forwards, textGlow 4s ease-in-out infinite alternate;
}

.logo-subtext {
    font-size: 0.8rem;
    color: var(--clr-primary);
    letter-spacing: 1.5px;
    text-transform: uppercase;
    font-weight: 600;
    animation: logoEntrance 1s ease-out 0.2s forwards;
    opacity: 0;
    /* hidden before animation starts */
}

.nav-list {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    font-weight: 500;
    color: var(--clr-text-main);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--clr-primary);
    transition: width var(--transition-normal);
}

.nav-link:hover::after {
    width: 100%;
}

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--clr-text-main);
    cursor: pointer;
}

.nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    padding: calc(var(--spacing-xl) * 1.5) 0 var(--spacing-xl);
    background: linear-gradient(135deg, var(--clr-bg-alt) 0%, var(--clr-bg-light) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

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

.badge {
    display: inline-block;
    padding: 0.35rem 1rem;
    background-color: var(--clr-secondary-light);
    color: var(--clr-primary-dark);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    color: var(--clr-primary-dark);
    margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--clr-text-muted);
    margin-bottom: var(--spacing-md);
    max-width: 500px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-image {
    position: relative;
    padding-bottom: 2rem;
}

.image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
}

.main-img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    width: 100%;
    object-fit: cover;
    aspect-ratio: 4/5;
}

.floating-card {
    position: absolute;
    background-color: var(--clr-white);
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
    font-size: 0.875rem;
    z-index: 10;
}

.emotion-card {
    top: 10%;
    left: -10%;
    animation: float 6s ease-in-out infinite;
}

.science-card {
    bottom: 5%;
    right: -10%;
    animation: float 5s ease-in-out infinite alternate;
}

/* ==========================================================================
   Cards & Grids (Para Quem É)
   ========================================================================== */
.grid-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.card {
    background-color: var(--clr-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 1px solid rgba(0, 0, 0, 0.03);
}

.card-icon {
    width: 50px;
    height: 50px;
    background-color: var(--clr-secondary-light);
    color: var(--clr-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.card h3 {
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

.card p {
    color: var(--clr-text-muted);
    font-size: 0.95rem;
}

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

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

.rounded-img {
    border-radius: var(--radius-lg);
    width: 100%;
    box-shadow: var(--shadow-md);
}

.subsection-title {
    font-size: 1.5rem;
    color: var(--clr-secondary);
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.about-content p {
    margin-bottom: 1rem;
    font-size: 1.125rem;
    color: var(--clr-text-muted);
}

.feature-list {
    margin-top: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1rem;
    font-weight: 500;
}

/* ==========================================================================
   TCC Section
   ========================================================================== */
.tcc-diagram-container {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-xl);
}

.tcc-diagram {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--clr-white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    max-width: 800px;
    width: 100%;
    flex-wrap: wrap;
    justify-content: space-between;
}

.node {
    text-align: center;
    flex: 1;
    min-width: 150px;
}

.node h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--clr-primary-dark);
}

.node p {
    font-size: 0.875rem;
    color: var(--clr-text-muted);
}

.arrows {
    font-size: 2rem;
    color: var(--clr-secondary);
    animation: spin 8s linear infinite;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.tcc-feature {
    text-align: center;
    padding: 2rem;
    background: var(--clr-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.tcc-feature i {
    font-size: 2.5rem;
    color: var(--clr-secondary);
    margin-bottom: 1rem;
}

.tcc-feature h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.tcc-feature p {
    font-size: 0.95rem;
    color: var(--clr-text-muted);
}

/* ==========================================================================
   Como Funciona (Timeline)
   ========================================================================== */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 0;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 24px;
    width: 2px;
    background-color: var(--clr-secondary-light);
}

.timeline-item {
    position: relative;
    padding-left: 5rem;
    margin-bottom: 3rem;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: 0;
    top: 0;
    width: 50px;
    height: 50px;
    background-color: var(--clr-primary);
    color: var(--clr-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    box-shadow: 0 0 0 8px var(--clr-white);
}

.timeline-content h3 {
    margin-bottom: 0.5rem;
    font-size: 1.5rem;
}

.timeline-content p {
    color: var(--clr-text-muted);
    font-size: 1.05rem;
}

/* ==========================================================================
   Testimonials
   ========================================================================== */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.testimonial-card {
    background-color: var(--clr-white);
    padding: 2.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    text-align: left;
    position: relative;
}

.quote-icon {
    font-size: 2rem;
    color: var(--clr-secondary-light);
    margin-bottom: 1rem;
}

.testimonial-text {
    font-size: 1.125rem;
    font-style: italic;
    margin-bottom: 1.5rem;
}

.testimonial-author {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-weight: 700;
    color: var(--clr-primary-dark);
}

.author-detail {
    font-size: 0.875rem;
    color: var(--clr-text-muted);
}

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq-container {
    max-width: 800px;
}

.accordion {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.accordion-item {
    border: 1px solid var(--clr-secondary-light);
    border-radius: var(--radius-sm);
    overflow: hidden;
    background-color: var(--clr-white);
}

.accordion-header {
    width: 100%;
    padding: 1.5rem;
    background: none;
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--clr-primary-dark);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.accordion-header:hover {
    background-color: var(--clr-bg-alt);
}

.accordion-header i {
    transition: transform 0.3s ease;
}

.accordion-header.active i {
    transform: rotate(180deg);
}

.accordion-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease;
}

.accordion-body p {
    padding: 0 1.5rem 1.5rem;
    color: var(--clr-text-muted);
}

/* ==========================================================================
   Final CTA
   ========================================================================== */
.cta-section {
    background: linear-gradient(135deg, var(--clr-primary-dark) 0%, var(--clr-primary) 100%);
    color: var(--clr-white);
}

.cta-title {
    color: var(--clr-white);
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-desc {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
}

.btn-cta {
    background-color: var(--clr-white);
    color: var(--clr-primary-dark);
    font-size: 1.25rem;
    padding: 1.25rem 2.5rem;
}

.btn-cta:hover {
    background-color: var(--clr-secondary-light);
    color: var(--clr-primary-dark);
}

.btn-cta-secondary {
    background-color: transparent;
    color: var(--clr-white);
    border: 2px solid var(--clr-white);
    font-size: 1.25rem;
    padding: 1.25rem 2.5rem;
}

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

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: var(--clr-text-main);
    color: var(--clr-white);
    padding: 2rem 0;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-info h3 {
    color: var(--clr-white);
    margin-bottom: 0.25rem;
}

.footer-info p {
    color: var(--clr-secondary);
    font-size: 0.875rem;
}

.footer-links p {
    color: var(--clr-secondary);
    font-size: 0.875rem;
}

/* ==========================================================================
   Animations
   ========================================================================== */
@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-15px);
    }

    100% {
        transform: translateY(0px);
    }
}

@keyframes spin {
    100% {
        transform: rotate(360deg);
    }
}

.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   Media Queries (Responsive)
   ========================================================================== */
@media (max-width: 992px) {

    .hero-container,
    .about-container {
        grid-template-columns: 1fr;
    }

    .hero {
        text-align: center;
        padding-top: calc(var(--spacing-xl) * 2);
    }

    .hero-subtitle {
        margin: 0 auto var(--spacing-md);
    }

    .hero-actions {
        justify-content: center;
    }

    .floating-card {
        display: none;
        /* Hide floating cards on mobile to avoid clutter */
    }
}

@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--clr-white);
        flex-direction: column;
        justify-content: center;
        transition: left 0.3s ease;
    }

    .nav.active {
        left: 0;
    }

    .nav-list {
        flex-direction: column;
        gap: 2rem;
        font-size: 1.25rem;
    }

    .mobile-menu-btn {
        display: block;
    }

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

    .tcc-diagram {
        flex-direction: column;
        gap: 1.5rem;
    }

    .arrows {
        margin: 0.5rem 0;
    }
}

@media (max-width: 480px) {
    .btn {
        width: 100%;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-dot {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .timeline-item {
        padding-left: 3.5rem;
    }
}