/* ========================================
   1. VARIÁVEIS E RESET
   ======================================== */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #ec4899;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 60px rgba(99, 102, 241, 0.3);
    --transition: all 0.3s ease;
    --radius: 12px;
    --radius-full: 50%;
}

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

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========================================
   2. HEADER
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    background: var(--bg-primary);
}

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

/* ---------- LOGO ---------- */
.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-img {
    height: 2.2rem;
    width: 2.2rem;
    display: block;
    object-fit: cover;
    border-radius: var(--radius-full);
    border: 2px solid var(--primary);
    padding: 2px;
    background: var(--bg-primary);
    transition: var(--transition);
}

.logo-img:hover {
    transform: scale(1.05);
    border-color: var(--primary-dark);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

.logo i {
    display: none;
}

.logo .highlight {
    color: var(--primary);
}

/* ---------- NAVEGAÇÃO ---------- */
.nav-menu ul {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
}

.nav-link {
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    color: var(--text-secondary);
}

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

/* ---------- CONTROLES ---------- */
.nav-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.control-btn {
    background: var(--bg-secondary);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-primary);
}

.control-btn:hover {
    background: var(--primary);
    color: white;
    transform: rotate(15deg);
}

.language-selector {
    display: flex;
    gap: 0.5rem;
}

.lang-btn {
    background: var(--bg-secondary);
    border: none;
    padding: 0.5rem;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1.2rem;
    opacity: 0.7;
}

.lang-btn:hover {
    opacity: 1;
    transform: scale(1.05);
}

.lang-btn.active {
    opacity: 1;
    background: var(--primary);
}

/* ---------- MOBILE MENU ---------- */
.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-primary);
    background: none;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    z-index: 1002;
}

/* ========================================
   3. SOBRE - LAYOUT PRINCIPAL
   ======================================== */
.sobre {
    padding: 120px 0 var(--spacing-xl);
    min-height: 100vh;
}

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

/* ========================================
   4. SOBRE - IMAGEM (STICKY + FLUTUANTE)
   ======================================== */
.sobre-imagem {
    position: sticky;
    top: 100px;
    align-self: flex-start;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    height: fit-content;
    min-height: 550px;
}

/* ---------- Container da Imagem ---------- */
.imagem-container {
    position: relative;
    width: 400px;  /* AUMENTADO */
    height: 400px; /* AUMENTADO */
    border-radius: var(--radius-full);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    transition: var(--transition);
    animation: float 3s ease-in-out infinite;
    border: 4px solid var(--primary);
}

/* Animação de Flutuação */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* ---------- Borda com Gradiente Animado ---------- */
.imagem-container::before {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border-radius: var(--radius-full);
    background: linear-gradient(45deg, var(--primary), var(--secondary), var(--primary));
    background-size: 300% 300%;
    z-index: -1;
    animation: gradientMove 4s ease-in-out infinite;
}

@keyframes gradientMove {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* ---------- Imagem ---------- */
.imagem-container img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    transition: var(--transition);
}

.imagem-container:hover {
    transform: scale(1.05);
    box-shadow: 0 30px 80px rgba(99, 102, 241, 0.5);
}

.imagem-container:hover img {
    transform: scale(1.1);
}

/* ---------- Overlay ---------- */
.imagem-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(0deg, rgba(99,102,241,0.9) 0%, rgba(99,102,241,0) 100%);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: var(--spacing-md);
    transform: translateY(100%);
    transition: var(--transition);
}

.imagem-container:hover .imagem-overlay {
    transform: translateY(0);
}

.overlay-content {
    text-align: center;
    color: white;
    opacity: 0;
    transition: var(--transition);
}

.imagem-container:hover .overlay-content {
    opacity: 1;
}

.overlay-content i {
    font-size: 2rem;
    margin-bottom: var(--spacing-xs);
    display: block;
}

.overlay-content p {
    font-size: 1rem;
    font-style: italic;
    font-weight: 500;
}

/* ---------- Elementos Decorativos ---------- */
.sobre-imagem::before {
    content: '';
    position: absolute;
    width: 480px;
    height: 480px;
    border-radius: var(--radius-full);
    background: radial-gradient(circle, rgba(99,102,241,0.1) 0%, transparent 70%);
    animation: float 3.5s ease-in-out infinite reverse;
    z-index: 0;
}

.sobre-imagem::after {
    content: '';
    position: absolute;
    width: 350px;
    height: 350px;
    border-radius: var(--radius-full);
    border: 2px dashed var(--primary);
    opacity: 0.3;
    animation: spin 20s linear infinite;
    z-index: 0;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ========================================
   5. SOBRE - CONTEÚDO
   ======================================== */
.sobre-conteudo {
    position: relative;
    z-index: 1;
}

/* ---------- Header ---------- */
.sobre-header {
    margin-bottom: var(--spacing-lg);
}

.sobre-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.sobre-header .gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.divider {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 2px;
    margin: var(--spacing-sm) 0;
}

.sobre-subtitulo {
    font-size: 1.2rem;
    color: var(--primary);
    font-weight: 500;
}

/* ---------- Texto ---------- */
.sobre-texto p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    color: var(--text-secondary);
}

/* ========================================
   6. FEATURES
   ======================================== */
.sobre-features {
    margin: var(--spacing-lg) 0;
}

.feature-item {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    background: var(--bg-secondary);
    border-radius: var(--radius);
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateX(10px);
    background: var(--bg-primary);
    box-shadow: var(--shadow-md);
}

.feature-item i {
    font-size: 1.5rem;
    color: var(--primary);
    margin-top: 5px;
    min-width: 30px;
}

.feature-item h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 5px;
    color: var(--text-primary);
}

.feature-item p {
    font-size: 0.9rem;
    margin: 0;
    color: var(--text-secondary);
}

/* ---------- Feature Destaque (Sistemas) ---------- */
.feature-item.destaque {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border: none;
    padding: var(--spacing-md);
}

.feature-item.destaque i,
.feature-item.destaque h4,
.feature-item.destaque p {
    color: white !important;
}

.feature-item.destaque:hover {
    transform: translateX(10px) scale(1.02);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
}

.feature-item.destaque strong {
    color: #ffffff;
    font-weight: 700;
}

/* ========================================
   7. DIFERENCIAIS
   ======================================== */
.sobre-diferenciais {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 2px solid var(--border-color);
}

.sobre-diferenciais h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.diferenciais-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.diferencial-card {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    padding: var(--spacing-sm);
    border-radius: var(--radius);
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

.diferencial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.diferencial-card i {
    font-size: 1.5rem;
    color: var(--primary);
    display: block;
    margin-bottom: 5px;
}

.diferencial-card span {
    font-size: 0.9rem;
    font-weight: 500;
}

/* ========================================
   8. FOOTER
   ======================================== */
.footer {
    background: var(--bg-secondary);
    padding: var(--spacing-lg) 0;
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* ========================================
   9. RESPONSIVO
   ======================================== */

/* ---------- Tablets ---------- */
@media (max-width: 1024px) {
    .sobre {
        padding: 100px 0 var(--spacing-lg);
    }
    
    .sobre-grid {
        gap: var(--spacing-lg);
    }
    
    .sobre-header h2 {
        font-size: 2.2rem;
    }
    
    .imagem-container {
        width: 320px;
        height: 320px;
    }
    
    .sobre-imagem::before {
        width: 380px;
        height: 380px;
    }
    
    .sobre-imagem::after {
        width: 280px;
        height: 280px;
    }
    
    .sobre-imagem {
        top: 90px;
        min-height: 450px;
    }
}

/* ---------- Mobile Grande ---------- */
@media (max-width: 768px) {
    .sobre {
        padding: 90px 0 var(--spacing-lg);
    }
    
    .sobre-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .sobre-imagem {
        position: relative;
        top: 0;
        min-height: auto;
        padding: 10px;
    }
    
    .imagem-container {
        width: 250px;
        height: 250px;
    }
    
    .sobre-imagem::before {
        width: 300px;
        height: 300px;
    }
    
    .sobre-imagem::after {
        width: 220px;
        height: 220px;
    }
    
    .sobre-header h2 {
        font-size: 1.8rem;
        text-align: center;
    }
    
    .divider {
        margin: var(--spacing-sm) auto;
    }
    
    .sobre-subtitulo {
        text-align: center;
    }
    
    .feature-item {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
    
    .feature-item i {
        margin-top: 0;
        margin-bottom: 8px;
    }
    
    .feature-item.destaque {
        text-align: center;
    }
    
    .diferenciais-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
}

/* ---------- Mobile Pequeno ---------- */
@media (max-width: 480px) {
    .sobre {
        padding: 80px 0 var(--spacing-md);
    }
    
    .sobre-header h2 {
        font-size: 1.5rem;
    }
    
    .imagem-container {
        width: 200px;
        height: 200px;
    }
    
    .sobre-imagem::before {
        width: 240px;
        height: 240px;
    }
    
    .sobre-imagem::after {
        width: 180px;
        height: 180px;
    }
    
    .diferenciais-grid {
        grid-template-columns: 1fr;
    }
}

/* ---------- Menu Mobile ---------- */
@media (max-width: 768px) {
    .nav-controls {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        left: -280px;
        width: 280px;
        height: 100vh;
        background: var(--bg-primary);
        transition: left 0.3s ease;
        z-index: 1001;
        padding: 80px 24px 24px 24px;
        overflow-y: auto;
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu ul {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }
    
    .nav-link {
        font-size: 1.2rem;
        padding: 8px 0;
        display: block;
    }
    
    body.menu-open::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1000;
    }
    
    body.menu-open {
        overflow: hidden;
    }
}