/* =================================
   TechArch - Sistema de Classes CSS
   ================================= */

/* === VARIÁVEIS CSS === */
:root {
    /* Cores principais */
    --color-primary: #13ecec;
    --color-secondary: #ff7849;
    --color-accent-green: #10b981;
    
    /* Backgrounds */
    --bg-light: #f6f8f8;
    --bg-dark: #102222;
    --bg-card-light: #ffffff;
    --bg-card-dark: #1e3434;
    
    /* Textos */
    --text-dark: #1e293b;
    --text-light: #f8fafc;
    --text-muted: #64748b;
    
    /* Bordas */
    --border-light: #e2e8f0;
    --border-dark: #334155;
    
    /* 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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-primary: 0 10px 30px rgba(19, 236, 236, 0.2);
    
    /* Espaçamentos */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Transições */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

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

body {
    font-family: 'Manrope', 'Roboto', sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* === UTILITÁRIOS DE TEXTO === */
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-muted { color: var(--text-muted); }

.font-bold { font-weight: 700; }
.font-extrabold { font-weight: 800; }
.font-black { font-weight: 900; }

.uppercase { text-transform: uppercase; }
.tracking-wide { letter-spacing: 0.05em; }
.tracking-wider { letter-spacing: 0.1em; }

/* === NAVEGAÇÃO === */
.nav-fixed {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 50;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: all var(--transition-base);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: inherit;
}

.nav-logo-icon {
    width: 2.5rem;
    height: 2.5rem;
    background: var(--color-primary);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-dark);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-link {
    text-decoration: none;
    font-weight: 500;
    color: inherit;
    transition: color var(--transition-fast);
    position: relative;
}

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

.nav-link.active {
    color: var(--color-primary);
    font-weight: 700;
}

/* === BOTÕES === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-weight: 700;
    font-size: 0.875rem;
    text-decoration: none;
    border: none;
    border-radius: 9999px;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--bg-dark);
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(19, 236, 236, 0.25);
}

.btn-secondary {
    background: var(--color-secondary);
    color: var(--bg-dark);
    box-shadow: 0 10px 30px rgba(255, 120, 73, 0.2);
}

.btn-secondary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-outline:hover {
    background: var(--color-primary);
    color: var(--bg-dark);
}

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

.btn-xl {
    padding: 1.25rem 2.5rem;
    font-size: 1.125rem;
}

/* === HERO SECTION === */
.hero-section {
    padding-top: 10rem;
    padding-bottom: 5rem;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 2rem;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    line-height: 1.75;
    max-width: 42rem;
    margin-bottom: 2rem;
}

/* === GRADIENTE DE FUNDO === */
.gradient-mesh {
    background-color: var(--bg-light);
    background-image: 
        radial-gradient(at 0% 0%, rgba(19, 236, 236, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 0%, rgba(19, 236, 236, 0.1) 0px, transparent 50%);
}

.gradient-mesh-dark {
    background-color: var(--bg-dark);
    background-image: 
        radial-gradient(at 0% 0%, rgba(19, 236, 236, 0.1) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(255, 120, 73, 0.08) 0px, transparent 50%);
}

/* === SEÇÕES === */
.section {
    padding: 6rem 1.5rem;
}

.section-container {
    max-width: 1280px;
    margin: 0 auto;
}

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

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-muted);
    max-width: 48rem;
    margin: 0 auto;
}

.section-divider {
    width: 5rem;
    height: 0.375rem;
    background: var(--color-primary);
    border-radius: 9999px;
    margin: 1rem 0;
}

/* === CARDS === */
.card {
    background: var(--bg-card-light);
    border-radius: 1rem;
    border: 1px solid var(--border-light);
    padding: 2rem;
    transition: all var(--transition-base);
}

.card:hover {
    border-color: rgba(19, 236, 236, 0.5);
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.card-icon-wrapper {
    width: 4rem;
    height: 4rem;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    transition: transform var(--transition-slow);
}

.card:hover .card-icon-wrapper {
    transform: scale(1.1) rotate(5deg);
}

.card-icon-primary { background: rgba(19, 236, 236, 0.2); }
.card-icon-secondary { background: rgba(255, 120, 73, 0.2); }
.card-icon-success { background: rgba(16, 185, 129, 0.2); }
.card-icon-info { background: rgba(59, 130, 246, 0.2); }
.card-icon-cyan { background: rgba(6, 182, 212, 0.2); }

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.card-subtitle {
    font-size: 0.875rem;
    font-style: italic;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.card-description {
    font-size: 0.875rem;
    line-height: 1.75;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    font-size: 0.875rem;
    text-decoration: none;
    transition: gap var(--transition-base);
}

.card-link:hover {
    gap: 1rem;
}

/* === GRADES === */
.grid-layout {
    display: grid;
    gap: 2rem;
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
    .grid-lg-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-lg-3 { grid-template-columns: repeat(2, 1fr); }
    .grid-lg-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .grid-md-1 { grid-template-columns: repeat(1, 1fr); }
    .grid-md-2 { grid-template-columns: repeat(1, 1fr); }
    .grid-md-3 { grid-template-columns: repeat(1, 1fr); }
    .grid-md-4 { grid-template-columns: repeat(1, 1fr); }
}

/* === ESTATÍSTICAS === */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.stat-card {
    text-align: center;
    padding: 2rem 1.5rem;
    background: var(--bg-card-light);
    border-radius: 1rem;
    border: 1px solid var(--border-light);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

/* === TIMELINE === */
.timeline {
    position: relative;
}

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

.timeline-dot {
    position: absolute;
    left: 0;
    top: 0;
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    box-shadow: var(--shadow-lg);
}

.timeline-dot-active {
    background: var(--color-primary);
}

.timeline-dot-inactive {
    background: rgba(19, 236, 236, 0.2);
    border: 2px solid var(--color-primary);
}

.timeline-line {
    position: absolute;
    left: 0.9375rem;
    top: 2rem;
    bottom: -3rem;
    width: 2px;
    background: rgba(19, 236, 236, 0.2);
}

/* === CTA SECTION === */
.cta-section {
    padding: 6rem 1.5rem;
    background: var(--bg-dark);
    border-radius: 2rem;
    position: relative;
    overflow: hidden;
}

.cta-decoration {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
}

.cta-decoration-1 {
    top: 0;
    right: 0;
    width: 16rem;
    height: 16rem;
    background: var(--color-primary);
    transform: translate(50%, -50%);
}

.cta-decoration-2 {
    bottom: 0;
    left: 0;
    width: 16rem;
    height: 16rem;
    background: var(--color-primary);
    transform: translate(-50%, 50%);
}

/* === FOOTER === */
.footer {
    padding: 3rem 1.5rem;
    border-top: 1px solid var(--border-light);
}

.footer-container {
    max-width: 1280px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.footer-link {
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

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

/* === MODO ESCURO === */
.dark {
    --bg-light: #102222;
    --bg-dark: #0a1818;
    --bg-card-light: #1e3434;
    --bg-card-dark: #102222;
    --text-dark: #f8fafc;
    --text-light: #1e293b;
    --text-muted: #94a3b8;
    --border-light: #334155;
    --border-dark: #1e293b;
}

.dark .nav-fixed {
    background: rgba(16, 34, 34, 0.8);
}

.dark .card {
    background: var(--bg-card-light);
    border-color: var(--border-light);
}

.dark .stat-card {
    background: rgba(30, 52, 52, 0.5);
    border-color: var(--border-light);
}

/* === ANIMAÇÕES === */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* === GLASS EFFECT === */
.glass-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* === RECURSOS === */
.resource-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.resource-card .card-description {
    flex-grow: 1;
}

/* === RESPONSIVIDADE === */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-section {
        padding-top: 8rem;
        padding-bottom: 3rem;
    }
    
    .section {
        padding: 4rem 1rem;
    }
    
    .cta-section {
        padding: 4rem 1.5rem;
        border-radius: 1rem;
    }
}

/* === UTILITÁRIOS === */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }

.mt-auto { margin-top: auto; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }

.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }

.rounded-lg { border-radius: 0.5rem; }
.rounded-xl { border-radius: 0.75rem; }
.rounded-2xl { border-radius: 1rem; }
.rounded-full { border-radius: 9999px; }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }

.transition { transition: all var(--transition-base); }
.transition-colors { transition: color var(--transition-base), background-color var(--transition-base); }