/* ===== RESET MODERNO ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ===== VARIÁVEIS DE DESIGN SYSTEM ===== */
:root {
    /* Paleta principal – tons sofisticados */
    --brand-primary: #0a192f;
    --brand-secondary: #5c6bc0;
    --brand-accent: #64b6ff;
    --brand-light: #ccd6f6;
    --brand-dark: #020c1b;
    --neutral-white: #ffffff;
    --neutral-offwhite: #f8fafc;
    --neutral-light: #e2e8f0;
    --neutral-medium: #94a3b8;
    --neutral-dark: #334155;
    --neutral-deep: #1e293b;
    
    /* Gradientes */
    --gradient-primary: linear-gradient(145deg, var(--brand-primary), #1e3a8a);
    --gradient-accent: linear-gradient(145deg, var(--brand-secondary), #3b4b9a);
    
    /* Sombras */
    --shadow-sm: 0 4px 12px rgba(2, 12, 27, 0.08);
    --shadow-md: 0 8px 24px rgba(2, 12, 27, 0.12);
    --shadow-lg: 0 20px 40px -10px rgba(2, 12, 27, 0.2);
    
    /* Bordas */
    --radius-md: 12px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    
    /* Transições */
    --transition-spring: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    --transition-smooth: all 0.3s ease;
    
    /* Tema claro (padrão) */
    --bg-body: var(--neutral-offwhite);
    --bg-card: var(--neutral-white);
    --bg-header: rgba(255,255,255,0.85);
    --text-primary: var(--brand-primary);
    --text-secondary: var(--neutral-dark);
    --text-tertiary: var(--neutral-medium);
    --border-light: rgba(0,0,0,0.05);
    --card-border: rgba(0,0,0,0.02);
}

/* Tema escuro */
body.dark-theme {
    --bg-body: var(--brand-dark);
    --bg-card: #112240;
    --bg-header: rgba(17, 34, 64, 0.9);
    --text-primary: var(--brand-light);
    --text-secondary: var(--neutral-light);
    --text-tertiary: var(--neutral-medium);
    --border-light: rgba(100,255,218,0.1);
    --card-border: rgba(100,255,218,0.05);
    --shadow-sm: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-md: 0 8px 24px rgba(0,0,0,0.5);
    --shadow-lg: 0 20px 40px -10px rgba(0,0,0,0.6);
}

body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-secondary);
    line-height: 1.6;
    transition: background-color 0.5s ease, color 0.3s ease;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
}

.container {
    width: 90%;
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== TIPOGRAFIA REFINADA ===== */
h1, h2, h3, h4 {
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

h1 {
    font-size: clamp(2.8rem, 8vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
}

.section-title {
    font-size: 2.4rem;
    margin-bottom: 1.2rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 70px;
    height: 4px;
    background: var(--gradient-accent);
    border-radius: 4px;
}

/* ===== HEADER ===== */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    background-color: var(--bg-header);
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition-smooth);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
    position: relative;
}

.logo {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.logo span {
    color: #64b6ff;
    font-weight: 600;
    margin-left: 2px;
}

/* ===== NAVEGAÇÃO ===== */
.nav-menu {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 1.1rem;
    padding: 8px 0;
    position: relative;
    transition: var(--transition-smooth);
}

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

.nav-link.active {
    color: var(--brand-accent);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--brand-accent);
    transition: width 0.3s ease;
}

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

.nav-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.theme-toggle {
    background: transparent;
    border: 1px solid var(--border-light);
    width: 48px;
    height: 48px;
    border-radius: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition-spring);
    backdrop-filter: blur(8px);
}

.theme-toggle:hover {
    background: var(--brand-accent);
    color: var(--brand-primary);
    border-color: var(--brand-accent);
    transform: rotate(15deg) scale(1.05);
}

.mobile-menu-btn {
    display: none;
    background: transparent;
    border: none;
    font-size: 1.8rem;
    color: var(--text-primary);
    cursor: pointer;
    z-index: 101;
}

/* ===== HERO ===== */
.hero {
    padding: 180px 0 100px;
    position: relative;
    text-align: center;
    background: radial-gradient(circle at 80% 30%, rgba(92, 107, 192, 0.08) 0%, transparent 50%);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero .title {
    font-size: 1.6rem;
    font-weight: 500;
    color: var(--brand-secondary);
    margin: 16px 0 8px;
    display: inline-block;
    padding: 8px 24px;
    background: var(--bg-card);
    border-radius: 60px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
}

.hero .subtitle {
    font-size: 1.2rem;
    color: var(--text-tertiary);
    max-width: 600px;
    margin: 16px auto 0;
}

/* ===== SEÇÕES ===== */
section {
    padding: 80px 0;
}

.category-section {
    margin-bottom: 80px;
}

.category-title {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-primary);
    border-bottom: 2px solid var(--brand-accent);
    padding-bottom: 12px;
    width: fit-content;
}

.category-title i {
    color: var(--brand-secondary);
    font-size: 1.8rem;
}

.section-subtitle {
    text-align: center;
    color: var(--text-tertiary);
    font-size: 1.2rem;
    max-width: 700px;
    margin: -20px auto 60px;
}

/* ===== CARDS DE CERTIFICADO ===== */
.certificates-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
    gap: 32px;
}

.certificate-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-spring);
    border: 1px solid var(--card-border);
    display: flex;
    flex-direction: column;
    backdrop-filter: blur(4px);
    transform: translateY(0);
}

.certificate-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(100, 255, 218, 0.3);
}

.certificate-image {
    height: 200px;
    position: relative;
    overflow: hidden;
    background: var(--neutral-light);
}

.certificate-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1);
}

.certificate-card:hover .certificate-img {
    transform: scale(1.08);
}

.certificate-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(2, 12, 27, 0.8), transparent);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.certificate-card:hover .certificate-overlay {
    opacity: 1;
}

.view-certificate-btn {
    background: var(--neutral-white);
    border: none;
    color: var(--brand-primary);
    font-weight: 600;
    padding: 12px 28px;
    border-radius: 60px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.certificate-card:hover .view-certificate-btn {
    transform: translateY(0);
}

.view-certificate-btn:hover {
    background: var(--brand-accent);
    color: var(--brand-dark);
    gap: 16px;
}

.certificate-body {
    padding: 28px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.certificate-header h3 {
    font-size: 1.4rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 6px;
}

.certificate-issuer {
    color: var(--brand-secondary);
    font-weight: 500;
    font-size: 0.95rem;
}

.certificate-info p {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 12px 0;
    color: var(--text-tertiary);
    font-size: 0.95rem;
}

.certificate-info i {
    width: 20px;
    color: var(--brand-accent);
}

.certificate-description {
    color: var(--text-secondary);
    margin: 16px 0 20px;
    line-height: 1.6;
    flex: 1;
}

.certificate-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(100, 255, 218, 0.15);
    color: var(--brand-accent);
    border-radius: 60px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.3px;
    border: 1px solid rgba(100, 255, 218, 0.3);
    width: fit-content;
}

.certificate-badge.highlight {
    background: var(--brand-secondary);
    color: white;
    border: none;
}

.certificate-badge.in-progress {
    background: transparent;
    border: 1px solid var(--neutral-medium);
    color: var(--text-tertiary);
}

/* ===== SERVIÇOS ===== */
.servicos {
    padding: 80px 0;
    background: var(--bg-body);
}

.servicos-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.servico-card {
    background: var(--bg-card);
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition-spring);
    border: 1px solid var(--card-border);
}

.servico-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--brand-accent);
}

.servico-card i {
    font-size: 3rem;
    color: var(--brand-accent);
    margin-bottom: 20px;
}

.servico-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.servico-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ===== STATS ===== */
.stats {
    background: var(--gradient-primary);
    color: white;
    padding: 80px 0;
    position: relative;
    isolation: isolate;
}

.stats::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.1) 0%, transparent 60%);
    z-index: 0;
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 40px;
    position: relative;
    z-index: 2;
}

.stat-item {
    text-align: center;
    padding: 32px 20px;
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(8px);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255,255,255,0.1);
    transition: var(--transition-spring);
}

.stat-item:hover {
    transform: translateY(-8px);
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.2);
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 8px;
    color: white;
}

.stat-label {
    font-size: 1.1rem;
    font-weight: 500;
    opacity: 0.85;
}

/* ===== MODAL ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(2, 12, 27, 0.9);
    backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.image-modal {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 1000px;
    height: 85vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transform: scale(0.95);
    transition: transform 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.modal-overlay.active .image-modal {
    transform: scale(1);
}

.modal-header {
    padding: 20px 28px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.3rem;
    font-weight: 500;
}

.close-modal {
    background: transparent;
    border: none;
    font-size: 1.5rem;
    color: var(--text-tertiary);
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.close-modal:hover {
    background: rgba(255,255,255,0.1);
    color: var(--brand-accent);
    transform: rotate(90deg);
}

.modal-body {
    flex: 1;
    padding: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--neutral-deep);
}

#certificate-image-viewer {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}

/* ===== FOOTER ===== */
footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border-light);
    padding: 40px 0;
}

.copyright {
    text-align: center;
    color: var(--text-tertiary);
    font-size: 0.95rem;
}

/* ===== ANIMAÇÕES ===== */
@keyframes float-up {
    0% { opacity: 0; transform: translateY(20px); }
    100% { opacity: 1; transform: translateY(0); }
}

.fade-in-up {
    animation: float-up 0.6s ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }

/* ===== RESPONSIVO ===== */
@media (max-width: 992px) {
    .mobile-menu-btn {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        max-width: 400px;
        height: 100vh;
        background: var(--bg-card);
        backdrop-filter: blur(16px);
        padding: 100px 40px 40px;
        transition: right 0.4s cubic-bezier(0.23, 1, 0.32, 1);
        box-shadow: var(--shadow-lg);
        z-index: 100;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-links {
        flex-direction: column;
        gap: 20px;
    }

    .nav-link {
        font-size: 1.3rem;
        display: block;
        padding: 10px 0;
    }
    
    .certificates-container {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .container { padding: 0 20px; }
    .hero { padding: 150px 0 70px; }
    .section-title { font-size: 2rem; }
    .category-title { font-size: 1.8rem; }
    .servico-card {
        padding: 30px 20px;
    }
    .servico-card i {
        font-size: 2.5rem;
    }
    .servico-card h3 {
        font-size: 1.3rem;
    }
}

@media (max-width: 480px) {
    .certificates-container { 
        grid-template-columns: 1fr; 
    }
    .stat-number { 
        font-size: 2.8rem; 
    }
    .nav-menu {
        width: 85%;
        padding: 80px 20px 20px;
    }
    .servicos-container {
        grid-template-columns: 1fr;
    }
}