@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

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

:root {
    --bg-primary: #0B0B0F;
    --bg-secondary: #111116;
    --bg-tertiary: #16161C;
    --bg-card: #1A1A22;
    --bg-elevated: #1E1E28;
    
    --orange-50: #FFF7ED;
    --orange-100: #FFEDD5;
    --orange-200: #FED7AA;
    --orange-300: #FDBA74;
    --orange-400: #FB923C;
    --orange-500: #F97316;
    --orange-600: #EA580C;
    --orange-700: #C2410C;
    --orange-800: #9A3412;
    --orange-900: #7C2D12;
    
    --primary: var(--orange-500);
    --primary-hover: var(--orange-600);
    --primary-light: var(--orange-400);
    
    --text-primary: #FFFFFF;
    --text-secondary: #A1A1AA;
    --text-tertiary: #71717A;
    --text-muted: #52525B;
    
    --border-primary: rgba(249, 115, 22, 0.2);
    --border-secondary: rgba(255, 255, 255, 0.1);
    --border-tertiary: rgba(255, 255, 255, 0.05);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 20px rgba(249, 115, 22, 0.3);
    
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background: 
        linear-gradient(rgba(249, 115, 22, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(249, 115, 22, 0.03) 1px, transparent 1px),
        radial-gradient(circle at 20% 80%, rgba(249, 115, 22, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(251, 146, 60, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(234, 88, 12, 0.04) 0%, transparent 50%),
        linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    background-size: 
        60px 60px,
        60px 60px,
        100% 100%,
        100% 100%, 
        100% 100%,
        100% 100%;
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary) 0%, var(--primary-hover) 100%);
    border-radius: var(--radius-full);
    border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-hover);
}

header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    backdrop-filter: blur(20px) saturate(180%);
    background: rgba(11, 11, 15, 0.7);
    border-bottom: 1px solid var(--border-tertiary);
    transition: var(--transition-smooth);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    transition: var(--transition-smooth);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo img {
    height: 32px;
    width: auto;
    filter: brightness(0) saturate(100%) invert(56%) sepia(77%) saturate(1919%) hue-rotate(13deg) brightness(103%) contrast(101%);
    transition: var(--transition-smooth);
    border-radius: var(--radius-sm);
}

.logo img:hover {
    filter: brightness(0) saturate(100%) invert(56%) sepia(77%) saturate(1919%) hue-rotate(13deg) brightness(120%) contrast(101%);
    transform: scale(1.02);
}

.nav-scripts-btn {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    font-family: inherit;
    font-size: 0.95rem;
    box-shadow: var(--shadow-md);
}

.nav-scripts-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(249, 115, 22, 0.3);
    background: linear-gradient(135deg, var(--primary-hover) 0%, var(--orange-700) 100%);
}

.mobile-menu .nav-scripts-btn {
    margin: 0.5rem 1.5rem;
    text-align: center;
    justify-content: center;
    width: calc(100% - 3rem);
}

.desktop-menu {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.desktop-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-md);
    position: relative;
    transition: var(--transition-smooth);
    display: inline-block;
}

.desktop-menu a::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(249, 115, 22, 0.1);
    border-radius: var(--radius-md);
    opacity: 0;
    transition: var(--transition-smooth);
    z-index: -1;
}

.desktop-menu a::after {
    content: '';
    position: absolute;
    bottom: 0.25rem;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    border-radius: var(--radius-full);
    transition: var(--transition-smooth);
}

.desktop-menu a:hover {
    color: var(--text-primary);
    transform: translateY(-1px);
}

.desktop-menu a:hover::before {
    opacity: 1;
}

.desktop-menu a:hover::after {
    width: 60%;
}

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}

.hamburger span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--text-secondary);
    border-radius: var(--radius-full);
    transition: var(--transition-smooth);
}

.hamburger:hover span {
    background: var(--primary);
}

.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 320px;
    height: 100vh;
    background: var(--bg-card);
    backdrop-filter: blur(20px) saturate(180%);
    border-left: 1px solid var(--border-secondary);
    padding: 2rem;
    z-index: 1001;
    transition: var(--transition-slow);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

.close-btn {
    align-self: flex-end;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    transition: var(--transition-smooth);
}

.close-btn:hover {
    color: var(--primary);
    background: rgba(249, 115, 22, 0.1);
}

.mobile-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    transition: var(--transition-smooth);
    border: 1px solid transparent;
}

.mobile-menu a:hover {
    color: var(--text-primary);
    background: rgba(249, 115, 22, 0.1);
    border-color: var(--border-primary);
}

.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
}

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

.update-banner {
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
    text-align: center;
    padding: 1rem 2rem;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: var(--transition-smooth);
    margin-top: 77px;
}

.update-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition-slow);
}

.update-banner:hover::before {
    left: 100%;
}

.hero {
    padding: 8rem 2rem 6rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(249, 115, 22, 0.08) 0%, transparent 70%);
    pointer-events: none;
    animation: heroGlow 8s ease-in-out infinite;
}

@keyframes heroGlow {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.6; }
    50% { transform: translate(-50%, -50%) scale(1.1); opacity: 1; }
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.highlight {
    background: linear-gradient(135deg, var(--primary) 0%, var(--orange-400) 50%, var(--orange-600) 100%);
    background-size: 200% 100%;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: highlightShine 3s linear infinite;
    position: relative;
    display: inline-block;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--orange-400));
    border-radius: var(--radius-full);
    opacity: 0.6;
}

@keyframes highlightShine {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 3rem;
    font-weight: 400;
}

.get-started-button-container {
    margin-bottom: 3rem;
}

.get-started-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    padding: 1.25rem 5rem;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    border: none;
    cursor: pointer;
    z-index: 1;
    min-width: 320px;
}

.get-started-button::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary-hover) 0%, var(--orange-700) 100%);
    opacity: 0;
    transition: var(--transition-smooth);
    z-index: -1;
    border-radius: var(--radius-full);
}

.get-started-button::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    transition: var(--transition-slow);
    animation: buttonShine 4s ease-in-out infinite;
    z-index: 0;
}

.get-started-button span {
    position: relative;
    z-index: 2;
}

.get-started-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(249, 115, 22, 0.4);
}

.get-started-button:hover::before {
    opacity: 1;
}

.get-started-button:active {
    transform: translateY(0px);
    transition: var(--transition-fast);
}

.Livros {
    padding: 6rem 2rem;
    position: relative;
}

.section-container {
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 4rem;
    letter-spacing: -0.02em;
}

.filtro-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-bottom: 4rem;
    flex-wrap: wrap;
    padding: 0 2rem;
}

.filtro-btn {
    background: rgba(26, 26, 34, 0.6);
    color: var(--text-secondary);
    border: 1px solid rgba(249, 115, 22, 0.1);
    padding: 0.875rem 1.75rem;
    border-radius: var(--radius-full);
    font-family: inherit;
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.filtro-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    opacity: 0;
    transition: var(--transition-smooth);
}

.filtro-btn:hover:not(.active) {
    color: var(--text-primary);
    border-color: rgba(249, 115, 22, 0.3);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    background: rgba(26, 26, 34, 0.8);
}

.filtro-btn:hover:not(.active)::before {
    opacity: 0.1;
}

.filtro-btn.active {
    background: rgba(249, 115, 22, 0.15);
    color: var(--text-primary);
    border: 2px solid var(--primary);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(249, 115, 22, 0.2);
    transform: translateY(-1px);
    backdrop-filter: blur(15px);
}

.filtro-btn.active::before {
    opacity: 0;
}

.grade-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    justify-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.grade-card {
    background: rgba(26, 26, 34, 0.7);
    border: 1px solid rgba(249, 115, 22, 0.1);
    border-radius: var(--radius-xl);
    padding: 2rem;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    width: 100%;
    max-width: 400px;
    backdrop-filter: blur(15px);
}

.grade-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-smooth);
}

.grade-card:hover {
    transform: translateY(-4px);
    border-color: rgba(249, 115, 22, 0.3);
    box-shadow: var(--shadow-xl), 0 0 40px rgba(249, 115, 22, 0.1);
    background: rgba(26, 26, 34, 0.9);
}

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

.grade-card.hidden {
    display: none;
}

.grade-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.grade-title i {
    color: var(--primary);
    font-size: 1.25em;
}

.volume {
    background: rgba(30, 30, 40, 0.6);
    border: 1px solid rgba(249, 115, 22, 0.08);
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
    overflow: hidden;
    transition: var(--transition-smooth);
    backdrop-filter: blur(8px);
}

.volume:hover {
    border-color: rgba(249, 115, 22, 0.2);
}

.volume-title {
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-weight: 600;
    color: var(--text-primary);
    transition: var(--transition-smooth);
    background: transparent;
    position: relative;
}

.volume-title::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--primary), var(--primary-light));
    transform: scaleY(0);
    transition: var(--transition-smooth);
}

.volume-title:hover {
    background: rgba(249, 115, 22, 0.05);
}

.volume-title:hover::before {
    transform: scaleY(1);
}

.volume-title::after {
    content: '\25BC';
    color: var(--primary);
    transition: var(--transition-smooth);
    font-size: 0.8em;
}

.volume-title.active::after {
    transform: rotate(180deg);
}

.materiais-list {
    max-height: 0;
    overflow: hidden;
    background: var(--bg-secondary);
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                padding 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.3s ease;
    opacity: 0;
}

.materiais-list.active {
    max-height: 500px;
    padding: 1.5rem;
    opacity: 1;
}

.material-link {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 1rem 1.25rem;
    background: rgba(30, 30, 40, 0.8);
    border: 1px solid rgba(249, 115, 22, 0.05);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-smooth);
    margin-bottom: 0.75rem;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(5px);
}

.material-link:last-child {
    margin-bottom: 0;
}

.material-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--primary), var(--primary-light));
    transform: scaleY(0);
    transition: var(--transition-smooth);
}

.material-link::after {
    content: '';
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 50%;
    flex-shrink: 0;
    transition: var(--transition-smooth);
}

.material-link:hover {
    background: rgba(26, 26, 34, 0.9);
    color: var(--text-primary);
    border-color: rgba(249, 115, 22, 0.2);
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.material-link:hover::before {
    transform: scaleY(1);
}

.material-link:hover::after {
    transform: scale(1.2);
    box-shadow: 0 0 8px rgba(249, 115, 22, 0.6);
}

footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-secondary);
    padding: 4rem 2rem 2rem;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-left {
    flex: 1;
    max-width: 400px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.footer-logo img {
    height: 32px;
    filter: brightness(0) invert(1) drop-shadow(0 0 8px rgba(249, 115, 22, 0.4));
}

.footer-logo span {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.footer-left p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-top: 1rem;
}

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

.footer-right-nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-smooth);
    padding: 0.5rem 0;
    position: relative;
}

.footer-right-nav a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    transition: var(--transition-smooth);
}

.footer-right-nav a:hover {
    color: var(--text-primary);
}

.footer-right-nav a:hover::before {
    width: 100%;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-tertiary);
    color: var(--text-tertiary);
    font-size: 0.9rem;
    width: 100%;
    margin: 0 auto;
}

.footer-bottom p {
    margin: 0;
    text-align: center;
    width: 100%;
}

.notification-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
}

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

.notification-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    cursor: pointer;
}

.notification-content {
    position: relative;
    background: rgba(26, 26, 34, 0.95);
    border: 2px solid rgba(249, 115, 22, 0.3);
    border-radius: var(--radius-xl);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-xl), 0 0 60px rgba(249, 115, 22, 0.2);
    animation: modalSlideIn 0.5s ease-out;
}

@keyframes modalSlideIn {
    0% {
        transform: translateY(-50px);
        opacity: 0;
        scale: 0.9;
    }
    100% {
        transform: translateY(0);
        opacity: 1;
        scale: 1;
    }
}

.notification-banner {
    width: 100%;
    height: 200px;
    background-image: url('./img/banner.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
}

.notification-banner::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50px;
    background: linear-gradient(transparent, rgba(26, 26, 34, 0.95));
}

.notification-body {
    padding: 2rem;
}

.notification-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(0, 0, 0, 0.6);
    border: none;
    color: var(--text-secondary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    font-size: 1.2rem;
    z-index: 10;
}

.notification-close:hover {
    background: rgba(249, 115, 22, 0.2);
    color: var(--primary);
    transform: scale(1.1);
}

.notification-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-align: center;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.notification-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    text-align: center;
    margin-bottom: 2rem;
}

.notification-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.notification-btn {
    padding: 0.875rem 2rem;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 120px;
}

.notification-btn.primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: white;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.notification-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl), 0 0 30px rgba(249, 115, 22, 0.4);
}

.notification-btn.secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.notification-btn.secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    color: var(--text-primary);
    transform: translateY(-1px);
}

@media (max-width: 768px) {
    .notification-content {
        width: 95%;
        margin: 1rem;
    }
    
    .notification-banner {
        height: 150px;
    }
    
    .notification-body {
        padding: 1.5rem;
    }
    
    .notification-title {
        font-size: 1.5rem;
    }
    
    .notification-description {
        font-size: 1rem;
    }
    
    .notification-actions {
        flex-direction: column;
    }
    
    .notification-btn {
        width: 100%;
    }
}

.particles {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -1;
    background: 
        radial-gradient(circle at 20% 80%, rgba(249, 115, 22, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(251, 146, 60, 0.02) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(234, 88, 12, 0.02) 0%, transparent 50%);
    animation: particlesFloat 20s ease-in-out infinite;
}

@keyframes particlesFloat {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-10px) rotate(0.5deg); }
    66% { transform: translateY(-5px) rotate(-0.5deg); }
}

@media (max-width: 1024px) {
    .header-content {
        padding: 1rem 2rem;
    }
    
    .hero {
        padding: 6rem 2rem 4rem;
    }
    
    .Livros {
        padding: 4rem 2rem;
    }
    
    .grade-container {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .footer-content {
        padding: 0 2rem;
        flex-wrap: wrap;
    }
    
    .footer-right-nav {
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .header-content {
        padding: 1rem 1.5rem;
    }

    .desktop-menu {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero {
        padding: 4rem 1rem 3rem;
    }
    
    .get-started-button {
        min-width: 260px;
        padding: 1.125rem 3rem;
    }
    
    .grade-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .filtro-container {
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
    }
    
    .filtro-btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 2rem;
        padding: 0 1.5rem;
    }
    
    .footer-right-nav {
        justify-content: center;
        flex-wrap: wrap;
        gap: 1.5rem;
    }
    
    .footer-left {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: 0.875rem 1rem;
    }
    
    .hero {
        padding: 3rem 1rem 2rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .get-started-button {
        padding: 1rem 2.5rem;
        font-size: 1rem;
        min-width: 240px;
    }
    
    .section-title {
        margin-bottom: 2.5rem;
    }
    
    .grade-card {
        padding: 1.5rem;
    }
    
    .volume-title {
        padding: 1rem 1.25rem;
    }
    
    .material-link {
        padding: 0.875rem 1rem;
    }
    
    .mobile-menu {
        width: 280px;
    }
    
    footer {
        padding: 3rem 1rem 1.5rem;
    }
    
    .footer-content {
        padding: 0 0;
    }
    
    .footer-logo span {
        font-size: 1.1rem;
    }
}

@media (min-width: 1400px) {
    .header-content,
    .section-container,
    .footer-content,
    .footer-bottom {
        max-width: 1600px;
    }
}

@media (min-width: 1800px) {
    .header-content,
    .section-container, 
    .footer-content,
    .footer-bottom {
        max-width: 1800px;
    }
    
    body {
        background-size: 
            80px 80px,
            80px 80px,
            100% 100%,
            100% 100%, 
            100% 100%,
            100% 100%;
    }
}

button:focus-visible,
.filtro-btn:focus-visible,
.volume-title:focus-visible,
a:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

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