/* ============================================
   DESIGN PHILOSOPHY: Minimalismo Moderno
   Espaço em branco generoso, tipografia clara,
   foco no conteúdo, animações elegantes
   ============================================ */

/* Reset e Variáveis */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #0052CC;
    --primary-hover: #0040A0;
    --background: #ffffff;
    --foreground: #1a1a1a;
    --card-bg: #f8f9fa;
    --border-color: #e8e8e8;
    --muted-text: #666666;
    --light-text: #999999;
    --footer-bg: #1a1a1a;
    --footer-text: #e8e8e8;

    --radius: 0.65rem;
    --transition: all 0.3s ease;
}

/* Tipografia */
html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--background);
    color: var(--foreground);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: clamp(2.5rem, 8vw, 3.5rem);
}

h2 {
    font-size: clamp(2rem, 6vw, 3rem);
}

h3 {
    font-size: clamp(1.25rem, 4vw, 1.75rem);
}

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

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .container {
        padding: 0 1.5rem;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 2rem;
    }
}

/* Botões */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 10px 25px rgba(0, 82, 204, 0.2);
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: scale(0.95);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--card-bg);
    color: var(--foreground);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

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

/* Badges e Tags */
.skill-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--card-bg);
    color: var(--foreground);
    border-radius: 2rem;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.skill-badge:hover {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background-color: var(--card-bg);
    border-radius: 2rem;
    border: 1px solid var(--border-color);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--foreground);
}

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

/* Animações */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(32px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    opacity: 0;
    animation: fadeInUp 0.8s ease-out forwards;
}

/* ============================================
   HEADER
   ============================================ */

.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 1.125rem;
}

.logo-icon {
    width: 2.5rem;
    height: 2.5rem;
    background-color: var(--primary);
    color: white;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
}

.logo-text {
    display: none;
}

@media (min-width: 640px) {
    .logo-text {
        display: inline;
    }
}

/* Navegação Desktop */
.nav {
    display: none;
    gap: 2rem;
    align-items: center;
}

@media (min-width: 768px) {
    .nav {
        display: flex;
        flex: 1;
        margin-left: 2rem;
    }
}

.nav-link {
    color: var(--foreground);
    font-weight: 500;
    transition: var(--transition);
}

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

/* Mobile Menu Button */
.mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    background-color: transparent;
    border: none;
    cursor: pointer;
    color: var(--foreground);
    transition: var(--transition);
}

@media (min-width: 768px) {
    .mobile-menu-btn {
        display: none;
    }
}

.mobile-menu-btn:hover {
    background-color: var(--card-bg);
    border-radius: var(--radius);
}

/* Mobile Navigation */
.mobile-nav {
    display: none;
    flex-direction: column;
    gap: 1rem;
    padding: 1rem 0;
    border-top: 1px solid var(--border-color);
}

.mobile-nav.active {
    display: flex;
}

@media (min-width: 768px) {
    .mobile-nav {
        display: none !important;
    }
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 5rem 0;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 0.95));
    z-index: 2;
}

.hero .container {
    position: relative;
    z-index: 3;
}

.hero-content {
    max-width: 800px;
}

.hero-title {
    margin: 1.5rem 0;
    line-height: 1.1;
}

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

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--muted-text);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 3rem;
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    padding-top: 3rem;
    border-top: 1px solid var(--border-color);
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--muted-text);
    font-size: 0.875rem;
}

/* ============================================
   SEÇÕES GENÉRICAS
   ============================================ */

section {
    padding: 5rem 0;
}

@media (min-width: 768px) {
    section {
        padding: 7rem 0;
    }
}

section:nth-child(even) {
    background-color: var(--card-bg);
}

.section-header {
    margin-bottom: 3rem;
    text-align: center;
}

.section-title {
    margin-bottom: 1rem;
}

.title-underline {
    width: 80px;
    height: 4px;
    background-color: var(--primary);
    border-radius: 2px;
    margin: 1rem auto 2rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--muted-text);
}

/* ============================================
   ABOUT SECTION
   ============================================ */

.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

@media (min-width: 768px) {
    .about-content {
        grid-template-columns: 1fr 1fr;
        align-items: center;
    }
}

.about-text p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    color: var(--foreground);
}

.about-highlights {
    display: grid;
    gap: 1.5rem;
}

.highlight-card {
    padding: 1.5rem;
    background-color: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    transition: var(--transition);
}

.highlight-card:hover {
    border-color: var(--primary);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
}

.highlight-card svg {
    color: var(--primary);
    margin-bottom: 1rem;
}

.highlight-card h3 {
    margin-bottom: 0.5rem;
    font-size: 1.125rem;
}

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

/* Timeline */
.timeline {
    border-top: 1px solid var(--border-color);
    padding-top: 3rem;
}

.timeline-title {
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.timeline-items {
    position: relative;
    padding-left: 2rem;
}

.timeline-item {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    position: relative;
}

.timeline-marker {
    position: absolute;
    left: -2rem;
    top: 0;
    width: 1rem;
    height: 1rem;
    background-color: var(--primary);
    border-radius: 50%;
    border: 3px solid var(--background);
}

.timeline-marker::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 100%;
    width: 2px;
    height: 4rem;
    background-color: var(--border-color);
    transform: translateX(-50%);
}

.timeline-item:last-child .timeline-marker::after {
    display: none;
}

.timeline-year {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.25rem;
}

.timeline-content h4 {
    margin-bottom: 0.5rem;
    font-size: 1.125rem;
}

.timeline-content p {
    color: var(--muted-text);
}

/* ============================================
   SKILLS SECTION
   ============================================ */

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.skill-category {
    padding: 2rem;
    background-color: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    transition: var(--transition);
}

.skill-category:hover {
    border-color: var(--primary);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
}

.skill-category h3 {
    margin-bottom: 1.5rem;
    font-size: 1.125rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

/* Proficiency */
.proficiency {
    border-top: 1px solid var(--border-color);
    padding-top: 3rem;
}

.proficiency-title {
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.proficiency-items {
    display: grid;
    gap: 2rem;
}

.proficiency-item {
    animation: fadeInUp 0.8s ease-out forwards;
}

.proficiency-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.proficiency-percent {
    color: var(--primary);
    font-weight: 700;
}

.proficiency-bar {
    height: 0.5rem;
    background-color: var(--card-bg);
    border-radius: 2rem;
    overflow: hidden;
}

.proficiency-fill {
    height: 100%;
    background: linear-gradient(to right, var(--primary), #0066FF);
    border-radius: 2rem;
    transition: width 1s ease-out;
}

/* ============================================
   PROJECTS SECTION
   ============================================ */

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.project-card {
    background-color: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    border-color: var(--primary);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    transform: translateY(-5px);
}

.project-image {
    width: 100%;
    height: 200px;
    background-size: cover;
    background-position: center;
}

.project-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-content h3 {
    margin-bottom: 0.75rem;
    font-size: 1.125rem;
}

.project-content>p {
    color: var(--muted-text);
    margin-bottom: 1rem;
    flex: 1;
    font-size: 0.875rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.project-tags span {
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 2rem;
    color: var(--muted-text);
}

.project-links {
    display: flex;
    gap: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.project-link {
    flex: 1;
    text-align: center;
    color: var(--primary);
    font-weight: 600;
    font-size: 0.875rem;
    transition: var(--transition);
}

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

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

.projects-cta p {
    color: var(--muted-text);
    margin-bottom: 1rem;
}

/* ============================================
   COURSES SECTION
   ============================================ */

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.course-card {
    background-color: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.course-card:hover {
    border-color: var(--primary);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.course-header {
    padding: 1.5rem;
    background: linear-gradient(135deg, rgba(0, 82, 204, 0.1), rgba(0, 102, 255, 0.1));
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
}

.course-header h3 {
    font-size: 1.125rem;
    margin: 0;
}

.course-level {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--primary);
    color: white;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 700;
    white-space: nowrap;
}

.course-level.intermediario {
    background-color: #FF9800;
}

.course-level.avancado {
    background-color: #F44336;
}

.course-description {
    padding: 1.5rem;
    color: var(--muted-text);
    font-size: 0.875rem;
}

.course-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    padding: 0 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.info-item {
    display: flex;
    gap: 1rem;
    padding: 1rem 0;
}

.info-item svg {
    color: var(--primary);
    flex-shrink: 0;
}

.info-label {
    font-size: 0.75rem;
    color: var(--light-text);
    margin-bottom: 0.25rem;
}

.info-value {
    font-weight: 600;
    color: var(--foreground);
}

.course-topics {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.topics-title {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.topics-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.topics-list li {
    font-size: 0.875rem;
    color: var(--muted-text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.topics-list li::before {
    content: '✓';
    color: var(--primary);
    font-weight: 700;
}

.course-footer {
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.price-label {
    font-size: 0.75rem;
    color: var(--light-text);
    margin-bottom: 0.25rem;
}

.price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

/* Why Learn */
.why-learn {
    background-color: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 3rem 2rem;
    text-align: center;
}

.why-learn h3 {
    margin-bottom: 2rem;
    font-size: 1.5rem;
}

.why-learn-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.why-learn-card {
    padding: 1.5rem;
}

.why-learn-card svg {
    color: var(--primary);
    margin-bottom: 1rem;
}

.why-learn-card h4 {
    margin-bottom: 0.75rem;
    font-size: 1.125rem;
}

.why-learn-card p {
    color: var(--muted-text);
    font-size: 0.875rem;
}

/* ============================================
   CONTACT SECTION
   ============================================ */

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.contact-method {
    padding: 2rem;
    background-color: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    text-align: center;
    transition: var(--transition);
}

.contact-method:hover {
    border-color: var(--primary);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
}

.contact-method svg {
    color: var(--primary);
    margin-bottom: 1rem;
}

.contact-label {
    font-size: 0.875rem;
    color: var(--light-text);
    margin-bottom: 0.5rem;
}

.contact-value {
    font-weight: 600;
    color: var(--foreground);
    display: block;
    transition: var(--transition);
}

.contact-method:hover .contact-value {
    color: var(--primary);
}

/* Contact Content */
.contact-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

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

.contact-form h3,
.contact-info h3 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

/* Form */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 0.875rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 1rem;
    color: var(--foreground);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 82, 204, 0.1);
}

.form-group textarea {
    resize: vertical;
}

/* Contact Info */
.contact-info p {
    color: var(--muted-text);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.contact-info-item {
    margin-bottom: 2rem;
}

.contact-info-item h4 {
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.contact-info-item p {
    margin-bottom: 0.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    color: var(--foreground);
    transition: var(--transition);
}

.social-links a:hover {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background-color: var(--footer-bg);
    color: var(--footer-text);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-section h4 {
    margin-bottom: 1rem;
    font-size: 1rem;
}

.footer-section ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--primary);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    line-height: 1.6;
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    text-align: center;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

@media (min-width: 768px) {
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }
}

.heart {
    color: var(--primary);
}

/* ============================================
   RESPONSIVIDADE
   ============================================ */

@media (max-width: 768px) {
    .hero-buttons {
        flex-direction: column;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .courses-grid {
        grid-template-columns: 1fr;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .stats {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   ACESSIBILIDADE
   ============================================ */

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus visible para navegação por teclado */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}