/* ========================================
   COURSE LIST PAGE - STYLES
   Go Up Treinamentos Profissionais
   ======================================== */

:root {
    /* Color Palette */
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;
    --accent: #10b981;
    --accent-dark: #059669;
    --accent-light: #34d399;
    --purple: #8b5cf6;
    --pink: #ec4899;
    --orange: #f59e0b;
    --cyan: #06b6d4;
    
    /* Background Colors */
    --dark-bg: #0a0a0a;
    --darker-bg: #050505;
    --card-bg: rgba(40, 40, 40, 0.6);
    --card-hover: rgba(60, 60, 60, 0.8);
    --border-color: rgba(59, 130, 246, 0.15);
    --border-glow: rgba(59, 130, 246, 0.3);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #a1b4c4;
    --text-muted: #6b7a8a;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #3b82f6, #10b981);
    --gradient-accent: linear-gradient(135deg, #10b981, #06b6d4);
    --gradient-purple: linear-gradient(135deg, #8b5cf6, #ec4899);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "Inter", "Segoe UI", sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ========================================
   BACKGROUND
   ======================================== */
.page-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    overflow: hidden;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(16, 185, 129, 0.06) 0%, transparent 50%),
        var(--dark-bg);
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
}

.glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    animation: glowPulse 8s ease-in-out infinite;
}

.glow-1 {
    width: 400px;
    height: 400px;
    background: rgba(59, 130, 246, 0.15);
    top: 10%;
    left: 10%;
}

.glow-2 {
    width: 300px;
    height: 300px;
    background: rgba(16, 185, 129, 0.1);
    bottom: 20%;
    right: 10%;
    animation-delay: 4s;
}

@keyframes glowPulse {
    0%, 100% {
        opacity: 0.5;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.1);
    }
}

/* ========================================
   HEADER
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 45px;
    transition: transform 0.3s ease;
}

.logo img:hover {
    transform: scale(1.05);
}

.nav-menu ul {
    display: flex;
    gap: 2.5rem;
    list-style: none;
    align-items: center;
}

.nav-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a:not(.btn-nav):hover {
    color: var(--primary);
}

.nav-menu a:not(.btn-nav)::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-menu a:not(.btn-nav):hover::after {
    width: 100%;
}

.btn-nav {
    background: var(--gradient-primary);
    color: var(--dark-bg) !important;
    padding: 0.7rem 1.5rem;
    border-radius: 50px;
    font-weight: 700;
    transition: all 0.3s ease;
}

.btn-nav:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.4);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background: var(--darker-bg);
    border-left: 1px solid var(--border-color);
    z-index: 2000;
    padding: 2rem;
    transition: right 0.3s ease;
}

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

.close-menu {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    margin-bottom: 2rem;
}

.mobile-menu ul {
    list-style: none;
}

.mobile-menu li {
    margin-bottom: 1.5rem;
}

.mobile-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 1.1rem;
    transition: color 0.3s ease;
}

.mobile-menu a:hover {
    color: var(--primary);
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8rem 2rem 4rem;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.hero-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15), transparent 60%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: heroGlow 6s ease-in-out infinite;
    pointer-events: none;
}

@keyframes heroGlow {
    0%, 100% {
        opacity: 0.4;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.7;
        transform: translate(-50%, -50%) scale(1.1);
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.8rem 1.8rem;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.4);
    border-radius: 50px;
    color: var(--primary);
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
}

.hero-content h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 40px rgba(59, 130, 246, 0.3);
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2.5rem;
    line-height: 1.8;
}

/* Search */
.search-container {
    max-width: 500px;
    margin: 0 auto;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 1rem 1.5rem 1rem 3.5rem;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    font-size: 1rem;
    font-family: inherit;
    background: var(--card-bg);
    color: var(--text-primary);
    backdrop-filter: blur(10px);
    outline: none;
    transition: all 0.3s ease;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.15);
}

.search-icon {
    position: absolute;
    left: 1.2rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 1rem;
    pointer-events: none;
}

/* ========================================
   STATS SECTION
   ======================================== */
.stats-section {
    padding: 2rem 0 4rem;
}

.stats-grid {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.stat-card {
    text-align: center;
    padding: 1.5rem 3rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 15px 40px rgba(59, 130, 246, 0.1);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 0.3rem;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ========================================
   COURSES SECTION
   ======================================== */
.courses-section {
    padding: 2rem 0 6rem;
}

/* Categories Filter */
.categories-filter {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.category-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.3rem;
    border: 2px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.category-btn:hover {
    border-color: var(--primary);
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary);
    transform: translateY(-2px);
}

.category-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: var(--dark-bg);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.3);
}

.category-btn i {
    font-size: 0.9rem;
}

/* Courses Grid */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

/* Course Card */
.course-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    cursor: pointer;
}

.course-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.course-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: 0 15px 40px rgba(59, 130, 246, 0.1);
}

.course-card:hover::before {
    transform: scaleX(1);
}

.course-icon {
    width: 50px;
    height: 50px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    background: rgba(59, 130, 246, 0.15);
}

/* Icon color variations based on category */
.course-card[data-category="Informática e Sistemas"] .course-icon {
    background: rgba(59, 130, 246, 0.15);
}

.course-card[data-category="Office e Produtividade"] .course-icon {
    background: rgba(16, 185, 129, 0.15);
}

.course-card[data-category="Design e Criação"] .course-icon {
    background: rgba(139, 92, 246, 0.15);
}

.course-card[data-category="Programação e Desenvolvimento"] .course-icon {
    background: rgba(6, 182, 212, 0.15);
}

.course-card[data-category="Inteligência Artificial"] .course-icon {
    background: rgba(236, 72, 153, 0.15);
}

.course-card[data-category="Gestão e Negócios"] .course-icon {
    background: rgba(245, 158, 11, 0.15);
}

.course-card[data-category="Marketing e Vendas"] .course-icon {
    background: rgba(239, 68, 68, 0.15);
}

.course-card[data-category="Desenvolvimento Pessoal"] .course-icon {
    background: rgba(34, 211, 238, 0.15);
}

.course-card[data-category="Áreas Específicas"] .course-icon {
    background: rgba(168, 85, 247, 0.15);
}

.course-card[data-category="Entretenimento e Jogos"] .course-icon {
    background: rgba(99, 102, 241, 0.15);
}

.course-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.4;
}

.course-category {
    font-size: 0.8rem;
    color: var(--accent);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* No Results */
.no-results {
    text-align: center;
    padding: 4rem 2rem;
    display: none;
}

.no-results i {
    font-size: 3rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.no-results h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.no-results p {
    color: var(--text-secondary);
}

/* ========================================
   CTA SECTION
   ======================================== */
.cta-section {
    padding: 4rem 2rem;
    position: relative;
}

.cta-section::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.1), transparent 60%);
    pointer-events: none;
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
    max-width: 600px;
    margin: 0 auto;
    padding: 3rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 30px;
    backdrop-filter: blur(10px);
}

.cta-content h2 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--dark-bg);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(59, 130, 246, 0.5);
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: rgba(0, 0, 0, 0.6);
    border-top: 1px solid var(--border-color);
    padding: 4rem 2rem 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-about p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin: 1rem 0;
}

.footer-logo {
    height: 50px;
    opacity: 0.9;
}

.footer-contact {
    margin: 1.5rem 0;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 0.8rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.contact-item i {
    color: var(--primary);
    width: 18px;
}

.footer-social-icons {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.footer-social-icons a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.footer-social-icons a:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--dark-bg);
    transform: translateY(-3px);
}

.footer-links h3 {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.footer-links ul {
    list-style: none;
}

.footer-links ul li {
    margin-bottom: 0.8rem;
}

.footer-links ul a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

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

.footer-location h3 {
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.footer-location p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.8;
}

.footer-bottom a {
    color: var(--primary);
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.footer-bottom a:hover {
    opacity: 0.8;
}

/* ========================================
   WHATSAPP FLOAT
   ======================================== */
.whatsapp-float {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    background: #25d366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.8rem;
    text-decoration: none;
    z-index: 999;
    box-shadow: 0 5px 25px rgba(37, 211, 102, 0.4);
    transition: all 0.3s ease;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 35px rgba(37, 211, 102, 0.6);
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: -100%;
    left: 0;
    background: var(--primary);
    color: var(--dark-bg);
    padding: 1rem 2rem;
    z-index: 9999;
    font-weight: 700;
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 0;
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .hero {
        padding: 7rem 1.5rem 3rem;
        min-height: auto;
    }
    
    .hero-content h1 {
        font-size: 2.2rem;
    }
    
    .stats-grid {
        gap: 1rem;
    }
    
    .stat-card {
        padding: 1.2rem 2rem;
    }
    
    .stat-value {
        font-size: 2rem;
    }
    
    .categories-filter {
        gap: 0.5rem;
    }
    
    .category-btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
    
    .courses-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
    
    .footer-about {
        grid-column: 1 / -1;
        text-align: center;
    }
    
    .footer-social-icons {
        justify-content: center;
    }
    
    .footer-links,
    .footer-location {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .hero-badge {
        font-size: 0.8rem;
        padding: 0.6rem 1.2rem;
    }
    
    .search-input {
        padding: 0.9rem 1.2rem 0.9rem 3rem;
        font-size: 0.95rem;
    }
    
    .courses-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-content {
        padding: 2rem 1.5rem;
    }
    
    .cta-content h2 {
        font-size: 1.5rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-about,
    .footer-links,
    .footer-location {
        text-align: center;
    }
    
    .footer-contact {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
}

/* ========================================
   ACCESSIBILITY
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 3px;
}