/* ==========================================================================
   CSS Variáveis
   ========================================================================== */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --text-primary: #111827;
    --text-secondary: #4b5563;
    
    --purple-50: #f5f3ff;
    --purple-100: #ede9fe;
    --purple-500: #8b5cf6;
    --purple-600: #7c3aed; /* Cor Principal */
    --purple-900: #4c1d95;
    
    --border-color: #e5e7eb;
    --glass-bg: rgba(255, 255, 255, 0.8);
    
    /* Tipografia */
    --font-sans: 'Plus Jakarta Sans', sans-serif;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    /* Transições */
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    
    --border-color: #334155;
    --glass-bg: rgba(15, 23, 42, 0.8);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

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

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-smooth), color var(--transition-smooth);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ==========================================================================
   Tipografia & Utilidades
   ========================================================================== */
h1, h2, h3, h4 {
    color: var(--text-primary);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

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

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    max-width: 600px;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
}

.btn-primary {
    background-color: var(--purple-600);
    color: #ffffff;
    box-shadow: 0 4px 14px 0 rgba(124, 58, 237, 0.39);
}

.btn-primary:hover {
    background-color: var(--purple-900);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.23);
}

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

.btn-outline:hover {
    border-color: var(--purple-600);
    color: var(--purple-600);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.05rem;
}

.w-full {
    width: 100%;
}

/* ==========================================================================
   Navbar
   ========================================================================== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 5rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.05em;
}

.logo span {
    color: var(--purple-600);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-item {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.nav-item:hover, .nav-item.active {
    color: var(--text-primary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

#theme-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-fast);
}

#theme-toggle:hover {
    transform: scale(1.1);
}

.menu-mobile-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.menu-mobile-btn span {
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition-fast);
}

/* ==========================================================================
   Hero / Sobre
   ========================================================================== */
.hero-section {
    padding: 12rem 0 8rem;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

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

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--purple-50);
    color: var(--purple-600);
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 2rem;
    border: 1px solid var(--purple-100);
}

[data-theme="dark"] .badge {
    background-color: rgba(124, 58, 237, 0.1);
    border-color: rgba(124, 58, 237, 0.2);
}

.hero-title {
    font-size: clamp(3rem, 5vw, 4.5rem);
    margin-bottom: 1.5rem;
}

.hero-title span {
    color: var(--purple-600);
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    max-width: 650px;
}

.hero-qualities {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.quality-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
}

.quality-item svg {
    color: var(--purple-600);
}

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

/* ==========================================================================
   Seções
   ========================================================================== */
.projects-section {
    padding: 8rem 0;
    background-color: var(--bg-secondary);
}

.projects-container {
    display: flex;
    flex-direction: column;
    gap: 6rem;
}

.project-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    transition: transform var(--transition-smooth);
}

.project-card:hover {
    transform: translateY(-8px);
}

@media (min-width: 992px) {
    .project-card {
        flex-direction: row;
        align-items: center;
    }
    
    .project-card:nth-child(even) {
        flex-direction: row-reverse;
    }

    .project-image-wrapper {
        flex: 1.2;
        padding: 3rem;
        background-color: var(--purple-50);
        display: flex;
        align-items: center;
        justify-content: center;
    }

    [data-theme="dark"] .project-image-wrapper {
        background-color: #172033;
    }

    .project-content {
        flex: 1;
        padding: 4rem;
    }
}

.project-image-wrapper {
    overflow: hidden;
    padding: 2rem;
    background-color: var(--purple-50);
}

[data-theme="dark"] .project-image-wrapper {
    background-color: #172033;
}

.project-image {
    width: 100%;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-smooth);
}

.project-card:hover .project-image {
    transform: scale(1.03);
}

.project-content {
    padding: 2rem;
}

.project-category {
    font-size: 0.875rem;
    color: var(--purple-600);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    display: block;
}

.project-title {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.project-description {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
}

.tech-tag {
    padding: 0.4rem 1rem;
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: 999px;
    font-size: 0.8125rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
}

/* ==========================================================================
   Serviços
   ========================================================================== */
.services-section {
    padding: 8rem 0;
}

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

.service-card {
    padding: 2.5rem;
    border-radius: 16px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    transition: all var(--transition-smooth);
}

.service-card:hover {
    border-color: var(--purple-600);
    box-shadow: 0 10px 30px -10px rgba(124, 58, 237, 0.15);
    transform: translateY(-5px);
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    background: var(--purple-50);
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
}

[data-theme="dark"] .service-icon {
    background: rgba(124, 58, 237, 0.1);
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

/* ==========================================================================
   Contatos
   ========================================================================== */
.contact-section {
    padding: 8rem 0;
    background-color: var(--bg-secondary);
}

.contact-container {
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

@media (min-width: 768px) {
    .contact-container {
        flex-direction: row;
        justify-content: space-between;
    }
    
    .contact-content {
        flex: 1;
        max-width: 500px;
    }
    
    .contact-links {
        flex: 1;
        max-width: 400px;
    }
}

.contact-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-content p {
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    font-size: 1.125rem;
}

.contact-links h3 {
    font-size: 1.25rem;
    margin-bottom: 2rem;
}

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

.social-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-weight: 500;
    transition: all var(--transition-fast);
    background-color: var(--bg-primary);
}

.social-item:hover {
    border-color: var(--purple-600);
    color: var(--purple-600);
    transform: translateX(5px);
}

.social-icon {
    background-color: var(--purple-50);
    color: var(--purple-600);
    padding: 0.5rem;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 800;
}

[data-theme="dark"] .social-icon {
    background-color: rgba(124, 58, 237, 0.1);
}

/* ==========================================================================
   Footer
   ========================================================================== */
footer {
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-primary);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

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

#back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background-color: var(--purple-600);
    color: white;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: 999;
    box-shadow: var(--shadow-md);
}

#back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

#back-to-top:hover {
    background-color: var(--purple-900);
    transform: translateY(-3px);
}

/* ==========================================================================
   Animações
   ========================================================================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

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

/* ==========================================================================
   Responsividade
   ========================================================================== */
@media (max-width: 768px) {
    .menu-mobile-btn {
        display: flex;
    }

    .nav-links {
        position: absolute;
        top: 5rem;
        left: 0;
        width: 100%;
        background-color: var(--bg-primary);
        flex-direction: column;
        gap: 0;
        border-bottom: 1px solid var(--border-color);
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
        transition: clip-path var(--transition-smooth);
    }

    .nav-links.open {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    }

    .nav-item {
        padding: 1.5rem 2rem;
        border-top: 1px solid var(--border-color);
        display: block;
    }

    .nav-actions .btn-primary {
        display: none; 
    }

    .hero-cta {
        flex-direction: column;
    }
    
    .hero-qualities {
        flex-direction: column;
        gap: 1rem;
    }
    
    .project-image-wrapper {
        padding: 1.5rem;
    }
    
    .project-content {
        padding: 1.5rem;
    }
}