/* Custom Properties with expanded color palette and animations */
:root {
    /* Base Colors */
    --bg-dark: #0f111a;
    --bg-darker: #070a14;
    --bg-secondary: #1a1b2e;
    --bg-secondary-hover: #212338;
    --text-dark: #ffffff;
    --text-muted: rgba(255, 255, 255, 0.7);
    --text-light: #212121;
    
    /* Accent Colors with gradients */
    --accent-blue: #00d4ff;
    --accent-purple: #c700ff;
    --accent-green: #00ff99;
    --accent-blue-dark: #0090ff;
    --accent-purple-dark: #9500c7;
    --accent-green-dark: #00bf73;
    
    /* Gradient mixes */
    --gradient-primary: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    --gradient-secondary: linear-gradient(135deg, var(--accent-purple), var(--accent-green));
    --gradient-tertiary: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
    
    /* Typography */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-md: 1.125rem;
    --font-size-lg: 1.5rem;
    --font-size-xl: 2rem;
    --font-size-2xl: 2.5rem;
    --font-size-3xl: 3rem;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-base: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Effects */
    --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 4px 15px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 6px 20px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 8px 30px rgba(0, 0, 0, 0.4);
    --shadow-glow-blue: 0 0 15px rgba(0, 212, 255, 0.5);
    --shadow-glow-purple: 0 0 15px rgba(199, 0, 255, 0.5);
    --shadow-glow-green: 0 0 15px rgba(0, 255, 153, 0.5);
    
    /* Animations */
    --transition-fast: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-base: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-smooth: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    --transition-bounce: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
}

/* Theme Color Classes */
.theme-blue { 
    --accent: var(--accent-blue); 
    --accent-dark: var(--accent-blue-dark);
    --gradient-theme: var(--gradient-primary);
    --shadow-glow: var(--shadow-glow-blue);
}
.theme-purple { 
    --accent: var(--accent-purple); 
    --accent-dark: var(--accent-purple-dark);
    --gradient-theme: var(--gradient-secondary);
    --shadow-glow: var(--shadow-glow-purple);
}
.theme-green { 
    --accent: var(--accent-green); 
    --accent-dark: var(--accent-green-dark);
    --gradient-theme: var(--gradient-tertiary);
    --shadow-glow: var(--shadow-glow-green);
}

/* Reset Styles with smooth scrolling */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    overflow-x: hidden;
}

body {
    font-family: 'Inter', 'Arial', sans-serif;
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-dark);
    transition: var(--transition-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

::selection {
    background: var(--accent);
    color: var(--bg-dark);
}

.container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--spacing-base);
    position: relative;
}

/* Typography Enhancements */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 700;
    margin-bottom: var(--spacing-base);
}

h1 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-lg);
    position: relative;
}

h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
}

h2.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-sm);
    position: relative;
}

h2.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--gradient-theme);
    border-radius: var(--radius-full);
}

h3 {
    font-size: var(--font-size-lg);
}

p {
    margin-bottom: var(--spacing-base);
}

/* Enhanced Button Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    background: var(--gradient-theme);
    color: var(--text-dark);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-md);
    margin: 0.5rem;
    min-height: 48px;
    text-decoration: none;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-theme);
    opacity: 0;
    z-index: -1;
    transform: scale(1.1);
    transition: var(--transition-base);
}

.btn:hover, .btn:focus {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    outline: none;
}

.btn:hover::before, .btn:focus::before {
    opacity: 1;
    transform: scale(1);
}

.btn:active {
    transform: translateY(1px);
}

.btn i {
    margin-right: var(--spacing-sm);
    font-size: 1.1em;
}

.btn--outline {
    background: transparent;
    color: var(--accent);
    border: 2px solid var(--accent);
    box-shadow: none;
}

.btn--outline:hover, .btn--outline:focus {
    background: var(--accent);
    color: var(--bg-dark);
    box-shadow: var(--shadow-glow);
}

.btn--icon {
    width: 48px;
    height: 48px;
    padding: 0;
    border-radius: var(--radius-full);
}

.btn--icon i {
    margin: 0;
}

/* Advanced Preloader */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease-out, visibility 0.5s ease-out;
}

.preloader.fade-out {
    opacity: 0;
    visibility: hidden;
}

.loader {
    position: relative;
    width: 60px;
    height: 60px;
}

.loader__circle {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 4px solid transparent;
    border-radius: 50%;
    animation: spinLoader 1.5s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
}

.loader__circle--primary {
    border-top-color: var(--accent-blue);
    animation-delay: 0s;
}

.loader__circle--secondary {
    width: 80%;
    height: 80%;
    margin: 10%;
    border-right-color: var(--accent-purple);
    animation-delay: 0.2s;
}

.loader__circle--tertiary {
    width: 60%;
    height: 60%;
    margin: 20%;
    border-bottom-color: var(--accent-green);
    animation-delay: 0.4s;
}

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

/* Enhanced Header Styles */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(15, 17, 26, 0);
    padding: var(--spacing-md) 0;
    z-index: 1000;
    transition: var(--transition-base);
    backdrop-filter: blur(0);
    -webkit-backdrop-filter: blur(0);
}

header.scrolled {
    background: rgba(15, 17, 26, 0.85);
    padding: var(--spacing-sm) 0;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

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

.logo {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-dark);
    text-decoration: none;
    display: flex;
    align-items: center;
    position: relative;
    z-index: 1001;
    transition: var(--transition-base);
}

.logo:hover, .logo:focus {
    color: var(--accent);
    transform: scale(1.05);
}

.logo__icon {
    margin-right: var(--spacing-sm);
    color: var(--accent);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    position: relative;
    width: 30px;
    height: 22px;
    z-index: 1001;
}

.menu-toggle__line {
    display: block;
    width: 100%;
    height: 3px;
    background: var(--text-dark);
    position: absolute;
    border-radius: var(--radius-full);
    transition: var(--transition-base);
}

.menu-toggle__line:nth-child(1) {
    top: 0;
}

.menu-toggle__line:nth-child(2) {
    top: 50%;
    transform: translateY(-50%);
}

.menu-toggle__line:nth-child(3) {
    bottom: 0;
}

.menu-toggle.active .menu-toggle__line:nth-child(1) {
    transform: translateY(10px) rotate(45deg);
}

.menu-toggle.active .menu-toggle__line:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active .menu-toggle__line:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

nav {
    display: flex;
    align-items: center;
}

nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

nav ul li {
    margin-left: var(--spacing-lg);
}

nav ul li a {
    color: var(--text-dark);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: var(--transition-base);
    position: relative;
    padding: var(--spacing-xs) 0;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition-base);
    border-radius: var(--radius-full);
}

nav ul li a:hover, nav ul li a:focus {
    color: var(--accent);
}

nav ul li a:hover::after, nav ul li a:focus::after {
    width: 100%;
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-dark);
    font-size: var(--font-size-md);
    cursor: pointer;
    margin-left: var(--spacing-md);
    transition: var(--transition-base);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    color: var(--accent);
    transform: rotate(30deg);
}

/* Menu Overlay */
.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(7, 10, 20, 0.8);
    display: none;
    z-index: 998;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    transition: var(--transition-base);
}

.menu-overlay.active {
    display: block;
    animation: fadeIn 0.3s ease-out;
}

/* Hero Section Enhanced */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--text-dark);
    background: linear-gradient(135deg, var(--bg-darker), var(--bg-secondary));
    overflow: hidden;
}

.hero__content {
    position: relative;
    z-index: 10;
    max-width: 800px;
    padding: var(--spacing-lg);
    animation: fadeInUp 1s ease-out;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, var(--font-size-3xl));
    margin-bottom: var(--spacing-base);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    background: var(--gradient-theme);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
    animation: gradientMove 15s ease infinite;
    background-size: 200% 200%;
}

.hero p {
    font-size: clamp(1rem, 2.5vw, var(--font-size-lg));
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    color: var(--text-muted);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-base);
    justify-content: center;
    flex-wrap: wrap;
}

.particles-canvas, .section-bg-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
    opacity: 0.6;
    will-change: transform;
    transform: translateZ(0);
}

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

@keyframes floatingAnimation {
    0% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0); }
}

@keyframes pulseGlow {
    0% { box-shadow: 0 0 0 0 rgba(0, 212, 255, 0.7); }
    70% { box-shadow: 0 0 0 15px rgba(0, 212, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 212, 255, 0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from { 
        opacity: 0; 
        transform: translateY(30px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from { 
        opacity: 0; 
        transform: translateX(-30px);
    }
    to { 
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInLeft {
    from { 
        opacity: 0; 
        transform: translateX(30px);
    }
    to { 
        opacity: 1;
        transform: translateX(0);
    }
}

/* Advanced Animation Classes */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

.animate-delay-100 { transition-delay: 0.1s; }
.animate-delay-200 { transition-delay: 0.2s; }
.animate-delay-300 { transition-delay: 0.3s; }
.animate-delay-400 { transition-delay: 0.4s; }
.animate-delay-500 { transition-delay: 0.5s; }

.animate-fade-in { animation: fadeIn 0.8s ease-out forwards; }
.animate-fade-in-up { animation: fadeInUp 0.8s ease-out forwards; }
.animate-fade-in-right { animation: fadeInRight 0.8s ease-out forwards; }
.animate-fade-in-left { animation: fadeInLeft 0.8s ease-out forwards; }
.animate-floating { animation: floatingAnimation 5s ease-in-out infinite; }
.animate-pulse { animation: pulseGlow 2s infinite; }

/* Utility Classes */
.text-gradient {
    background: var(--gradient-theme);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
}

.bg-gradient {
    background: var(--gradient-theme);
}

.bg-glass {
    background: rgba(26, 27, 46, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-base); }
.mt-4 { margin-top: var(--spacing-md); }
.mt-5 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-base); }
.mb-4 { margin-bottom: var(--spacing-md); }
.mb-5 { margin-bottom: var(--spacing-lg); }

/* Enhanced Professional CSS - Part 2 */

/* Tecnologias Section Enhanced */
.tecnologias {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
    color: var(--text-dark);
    position: relative;
    overflow: hidden;
}

.tecnologias::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 80% 20%, var(--bg-secondary-hover), transparent 50%);
    z-index: 0;
}

.tecnologias .container {
    position: relative;
    z-index: 1;
}

.tecnologias-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.tecnologia {
    background: rgba(0, 0, 0, 0.2);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.tecnologia::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--gradient-theme);
    transform: translateY(-100%);
    transition: var(--transition-smooth);
}

.tecnologia:hover, .tecnologia:focus {
    transform: translateY(-8px) scale(1.03);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    border-color: var(--accent);
    outline: none;
}

.tecnologia:hover::before, .tecnologia:focus::before {
    transform: translateY(0);
}

.tecnologia i {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--accent);
    transition: var(--transition-smooth);
}

.tecnologia:hover i, .tecnologia:focus i {
    transform: scale(1.2);
    animation: iconPulse 1s ease infinite;
}

.tecnologia h3 {
    font-size: var(--font-size-sm);
    color: var(--text-dark);
    transition: var(--transition-base);
    margin-bottom: 0;
}

@keyframes iconPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

/* Portfolio Section Enhanced */
.portfolio {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-dark);
    color: var(--text-dark);
    position: relative;
    overflow: hidden;
}

.portfolio::before {
    content: '';
    position: absolute;
    bottom: 0;
    right: 0;
    width: 50%;
    height: 50%;
    background: radial-gradient(circle at 90% 90%, var(--bg-secondary), transparent 60%);
    z-index: 0;
    opacity: 0.7;
}

.portfolio .container {
    position: relative;
    z-index: 1;
}

.portfolio-filter {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.filter-btn {
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--text-dark);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition-base);
    font-size: var(--font-size-sm);
}

.filter-btn:hover, .filter-btn:focus, .filter-btn.active {
    background: var(--accent);
    color: var(--bg-dark);
    box-shadow: var(--shadow-glow);
    outline: none;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    background: var(--bg-secondary);
    transition: var(--transition-smooth);
    height: 100%;
    min-height: 200px;
    cursor: pointer;
}

.portfolio-item:hover, .portfolio-item:focus {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.portfolio-item:hover img, .portfolio-item:focus img {
    transform: scale(1.1);
}

.portfolio-item:hover .portfolio-overlay, .portfolio-item:focus .portfolio-overlay {
    opacity: 1;
}

.portfolio-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.portfolio-iframe {
    width: 100%;
    height: 200px;
    border: none;
    transition: opacity 0.5s ease;
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-base);
    opacity: 0;
    transition: var(--transition-smooth);
}

.portfolio-overlay h3 {
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
}

.portfolio-overlay p {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-base);
    text-align: center;
}

.portfolio-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

/* Contact Section Enhanced */
.contato {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
    color: var(--text-dark);
    position: relative;
    overflow: hidden;
}

.contato::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 10% 20%, rgba(0, 212, 255, 0.1), transparent 30%),
        radial-gradient(circle at 90% 80%, rgba(199, 0, 255, 0.1), transparent 30%);
    z-index: 0;
}

.contato .container {
    position: relative;
    z-index: 1;
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    align-items: center;
}

.contact-info {
    text-align: left;
}

.contact-info h3 {
    margin-bottom: var(--spacing-base);
    position: relative;
    display: inline-block;
    padding-bottom: var(--spacing-xs);
}

.contact-info h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: var(--accent);
    border-radius: var(--radius-full);
}

.contact-method {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-base);
    padding: var(--spacing-sm) var(--spacing-base);
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.contact-method:hover, .contact-method:focus {
    transform: translateX(5px);
    background: rgba(0, 0, 0, 0.3);
}

.contact-method i {
    font-size: 1.5rem;
    color: var(--accent);
    margin-right: var(--spacing-base);
}

.contact-method-info {
    flex: 1;
}

.contact-method-info h4 {
    margin-bottom: 0;
    font-size: var(--font-size-sm);
}

.contact-method-info p {
    margin-bottom: 0;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.contact-form {
    background: rgba(0, 0, 0, 0.2);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.form-group {
    margin-bottom: var(--spacing-base);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-base);
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-dark);
    font-size: var(--font-size-sm);
    transition: var(--transition-base);
}

.form-control:focus {
    border-color: var(--accent);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.2);
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

/* Footer Enhanced */
footer {
    background: var(--bg-darker);
    color: var(--text-dark);
    text-align: center;
    padding: var(--spacing-xl) 0 var(--spacing-base);
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: var(--gradient-theme);
    z-index: 1;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    text-align: left;
    margin-bottom: var(--spacing-xl);
}

.footer-column h3 {
    margin-bottom: var(--spacing-base);
    position: relative;
    display: inline-block;
    padding-bottom: var(--spacing-xs);
}

.footer-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--accent);
    border-radius: var(--radius-full);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition-base);
    display: inline-block;
}

.footer-links a:hover, .footer-links a:focus {
    color: var(--accent);
    transform: translateX(5px);
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-base);
}

.social-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-dark);
    font-size: 1.2rem;
    transition: var(--transition-base);
}

.social-icon:hover, .social-icon:focus {
    background: var(--accent);
    color: var(--bg-dark);
    transform: translateY(-5px);
}

.footer-newsletter p {
    margin-bottom: var(--spacing-base);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-xs);
}

.newsletter-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-base);
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-dark);
    font-size: var(--font-size-sm);
}

.newsletter-input:focus {
    border-color: var(--accent);
    outline: none;
}

.newsletter-btn {
    background: var(--accent);
    color: var(--bg-dark);
    border: none;
    border-radius: var(--radius-md);
    padding: 0 var(--spacing-base);
    cursor: pointer;
    transition: var(--transition-base);
}

.newsletter-btn:hover, .newsletter-btn:focus {
    background: var(--accent-dark);
    transform: translateX(3px);
}

.footer-bottom {
    padding-top: var(--spacing-base);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* Enhanced Floating Budget Button */
.floating-budget-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--gradient-theme);
    color: var(--text-dark);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    transition: var(--transition-bounce);
    min-height: 56px;
    text-decoration: none;
    overflow: hidden;
    animation: floatingAnimation 4s ease-in-out infinite;
}

.floating-budget-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-secondary);
    opacity: 0;
    transition: var(--transition-base);
    z-index: -1;
}

.floating-budget-btn:hover, .floating-budget-btn:focus {
    transform: scale(1.1);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    outline: none;
}

.floating-budget-btn:hover::before, .floating-budget-btn:focus::before {
    opacity: 1;
}

.floating-budget-btn i {
    animation: pulseGlow 2s infinite;
}

/* Enhanced Modals (General) */
.project-modal, .tech-modal, .history-modal, .quick-budget-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(7, 10, 20, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1200;
    overflow-y: auto;
    padding: var(--spacing-base);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: var(--transition-base);
}

.project-modal.active, .tech-modal.active, .history-modal.active, .quick-budget-modal.active {
    display: flex;
    animation: modalFadeIn 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

@keyframes modalFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.project-modal-content, .tech-modal-content, .history-modal-content, .quick-budget-modal-content {
    background: rgba(26, 27, 46, 0.95);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    max-width: 600px;
    width: 100%;
    position: relative;
    animation: modalOpen 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    box-shadow: var(--shadow-xl);
    color: var(--text-dark);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    max-height: 85vh;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--accent) var(--bg-dark);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

@keyframes modalOpen {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.modal-close, .tech-modal-close, .history-modal-close, .quick-budget-modal-close {
    position: absolute;
    top: var(--spacing-base);
    right: var(--spacing-base);
    background: rgba(0, 0, 0, 0.3);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-dark);
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover, .tech-modal-close:hover, .history-modal-close:hover, .quick-budget-modal-close:hover {
    background: var(--accent);
    color: var(--bg-dark);
    transform: rotate(90deg);
}

.tech-modal-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-base);
    color: var(--accent);
    text-align: center;
    animation: iconPulse 2s ease infinite;
}

.tech-modal-title, .history-modal-title, .quick-budget-modal-title {
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
    font-size: var(--font-size-xl);
    font-weight: 700;
    text-align: center;
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.tech-modal-title::after, .history-modal-title::after, .quick-budget-modal-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-theme);
    border-radius: var(--radius-full);
}

.history-modal-nav {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-lg);
}

.history-nav-btn {
    padding: var(--spacing-sm) var(--spacing-base);
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-dark);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.history-nav-btn:hover, .history-nav-btn:focus {
    background: var(--accent);
    color: var(--bg-dark);
    transform: translateY(-3px);
}

.history-nav-btn:disabled {
    background: rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.3);
    cursor: not-allowed;
    transform: none;
}

/* Enhanced Quick Budget Modal */
.quick-budget-modal-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 700px;
}

.quick-budget-modal-content form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.quick-budget-modal-content h4 {
    font-size: clamp(1rem, 4vw, var(--font-size-md));
    color: var(--text-dark);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.quick-budget-modal-content h4 i {
    color: var(--accent);
}

.quick-budget-modal-content p {
    font-size: clamp(0.75rem, 3vw, var(--font-size-sm));
    color: var(--text-muted);
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.project-type-radio {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.project-type-radio label {
    display: flex;
    align-items: center;
    gap: var(--spacing-base);
    font-size: clamp(0.75rem, 3vw, var(--font-size-sm));
    color: var(--text-dark);
    background: rgba(0, 0, 0, 0.2);
    padding: var(--spacing-sm) var(--spacing-base);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
    cursor: pointer;
    min-height: 48px;
    animation: fadeIn 0.3s ease;
    border: 1px solid transparent;
}

.project-type-radio label:hover {
    background: rgba(0, 0, 0, 0.3);
    transform: translateX(3px);
    border-left: 3px solid var(--accent);
}

.project-type-radio input[type="radio"] {
    appearance: none;
    width: 22px;
    height: 22px;
    background: rgba(0, 0, 0, 0.3);
    border: 2px solid var(--accent);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition-base);
    flex-shrink: 0;
    position: relative;
}

.project-type-radio input[type="radio"]:checked {
    background: var(--accent);
    box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.3);
}

.project-type-radio input[type="radio"]:checked::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background: var(--bg-dark);
    border-radius: 50%;
    animation: pulseGlow 1.5s infinite;
}

.project-type-radio input[type="radio"]:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.tech-checkboxes {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.tech-checkboxes label {
    display: flex;
    align-items: center;
    gap: var(--spacing-base);
    font-size: clamp(0.75rem, 3vw, var(--font-size-sm));
    color: var(--text-dark);
    background: rgba(0, 0, 0, 0.2);
    padding: var(--spacing-sm) var(--spacing-base);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
    cursor: pointer;
    min-height: 48px;
    animation: fadeIn 0.3s ease;
    border: 1px solid transparent;
}

.tech-checkboxes label:hover {
    background: rgba(0, 0, 0, 0.3);
    transform: translateX(3px);
    border-left: 3px solid var(--accent);
}

.tech-checkboxes input[type="checkbox"] {
    appearance: none;
    width: 22px;
    height: 22px;
    background: rgba(0, 0, 0, 0.3);
    border: 2px solid var(--accent);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-base);
    flex-shrink: 0;
    position: relative;
}

.tech-checkboxes input[type="checkbox"]:checked {
    background: var(--accent);
    box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.3);
}

.tech-checkboxes input[type="checkbox"]:checked::after {
    content: '✔';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--bg-dark);
    font-size: 14px;
    animation: pulseGlow 1.5s infinite;
}

.tech-checkboxes input[type="checkbox"]:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.budget-result {
    text-align: center;
    margin-top: var(--spacing-base);
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    animation: fadeIn 0.5s ease;
}

.budget-result p {
    font-size: clamp(1rem, 4vw, var(--font-size-lg));
    color: var(--text-dark);
    font-weight: 600;
    margin-bottom: var(--spacing-base);
}

.budget-price {
    font-size: clamp(1.5rem, 5vw, 2rem);
    color: var(--accent);
    font-weight: 700;
    display: block;
    margin: var(--spacing-base) 0;
    animation: pulseGlow 2s infinite;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.budget-submit, .clear-btn {
    background: var(--gradient-theme);
    color: var(--text-dark);
    margin: var(--spacing-sm) auto;
    width: 100%;
    max-width: 250px;
    min-height: 48px;
    font-size: clamp(0.875rem, 3vw, 1rem);
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-bounce);
    position: relative;
    overflow: hidden;
}

.budget-submit:hover, .clear-btn:hover,
.budget-submit:focus, .clear-btn:focus {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    outline: none;
}

.budget-submit::before, .clear-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-secondary);
    opacity: 0;
    transition: var(--transition-base);
    z-index: -1;
}

.budget-submit:hover::before, .clear-btn:hover::before,
.budget-submit:focus::before, .clear-btn:focus::before {
    opacity: 1;
}

.clear-btn {
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
}

.clear-btn:hover, .clear-btn:focus {
    color: var(--text-dark);
}

.error-message {
    text-align: center;
    font-size: clamp(0.75rem, 3vw, var(--font-size-sm));
    color: #ff4d4d;
    margin-top: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-base);
    background: rgba(255, 77, 77, 0.1);
    border-radius: var(--radius-md);
    border-left: 3px solid #ff4d4d;
    animation: shake 0.3s ease;
}

/* Continuing from where the code left off */

.iframe-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    background: var(--bg-secondary);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    text-align: center;
    padding: var(--spacing-base);
    border-radius: var(--radius-lg);
}

/* Animation Enhancements */
@keyframes floatingAnimation {
    0% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0); }
}

@keyframes pulseGlow {
    0% { text-shadow: 0 0 5px rgba(0, 212, 255, 0.3); }
    50% { text-shadow: 0 0 15px rgba(0, 212, 255, 0.7); }
    100% { text-shadow: 0 0 5px rgba(0, 212, 255, 0.3); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-5px); }
    40%, 80% { transform: translateX(5px); }
}

/* Media Queries for Responsive Design */
@media (max-width: 1200px) {
    .tecnologias-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
    
    .portfolio-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

/* Responsive styles for mobile devices */

/* Mobile devices (up to 768px) */
@media (max-width: 768px) {
    /* General Layout */
    .container {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 0 var(--spacing-md);
    }

    /* Header */
    header .container {
        flex-direction: row;
        justify-content: flex-start;
        align-items: center;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .menu-toggle {
        display: block;
        order: 1;
        margin-right: var(--spacing-sm);
    }

    .theme-toggle {
        display: block;
        order: 2;
        margin-right: var(--spacing-md);
    }

    .logo {
        order: 3;
        flex-grow: 1;
        text-align: center;
        font-size: var(--font-size-md);
    }

    nav {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: var(--bg-dark);
        z-index: 999;
    }

    nav.active {
        display: flex;
        flex-direction: column;
        align-items: center;
        padding-top: 30vh; /* Push content down to ~30% from top */
    }

    nav ul {
        flex-direction: column;
        gap: var(--spacing-lg);
        padding: var(--spacing-xl);
        margin: 0; /* Remove default margins */
    }

    nav ul li a {
        font-size: var(--font-size-lg);
        padding: var(--spacing-sm);
        color: #ffffff; /* White text for hamburger menu links */
    }

    .menu-overlay.active {
        display: block;
    }

    /* Hero Section */
    .hero {
        min-height: 70vh;
        padding: var(--spacing-lg) var(--spacing-base);
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .hero .container {
        max-width: 90%;
    }

    .hero h1 {
        font-size: var(--font-size-2xl);
        margin-bottom: var(--spacing-sm);
    }

    .hero p {
        font-size: var(--font-size-md);
        margin-bottom: var(--spacing-md);
    }

    .hero-buttons {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .hero-buttons .btn {
        width: 100%;
        max-width: 250px;
        padding: var(--spacing-sm);
        font-size: var(--font-size-sm);
    }

    /* Tecnologias Section */
    .tecnologias .container {
        max-width: 90%;
    }

    .tecnologias h2,
    .tecnologias h3 {
        font-size: var(--font-size-xl);
        margin-bottom: var(--spacing-md);
    }

    .tecnologias-grid {
        grid-template-columns: repeat(3, minmax(100px, 1fr)); /* 3 columns for mobile */
        gap: var(--spacing-md);
        justify-items: center;
    }

    .tecnologia {
        padding: var(--spacing-md);
        border-radius: var(--border-radius);
        display: flex;
        flex-direction: column;
        align-items: center;
        min-width: 100px;
        min-height: 120px;
    }

    .tecnologia i {
        font-size: 2.5rem; /* Larger icons */
        margin-bottom: var(--spacing-sm);
    }

    .tecnologia h3 {
        font-size: var(--font-size-sm); /* Larger text */
    }

    /* Portfolio Section */
    .portfolio .container {
        max-width: 90%;
    }

    .portfolio h2 {
        font-size: var(--font-size-xl);
        margin-bottom: var(--spacing-md);
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .portfolio-item {
        min-height: 150px;
        border-radius: var(--border-radius);
        overflow: hidden;
    }

    .portfolio-iframe {
        height: 150px;
    }

    .portfolio-item h3 {
        font-size: var(--font-size-sm);
        margin-top: var(--spacing-sm);
    }

    /* Contato Section */
    .contato .container {
        max-width: 90%;
    }

    .contato h2 {
        font-size: var(--font-size-xl);
        margin-bottom: var(--spacing-sm);
    }

    .contato p {
        font-size: var(--font-size-sm);
        margin-bottom: var(--spacing-md);
    }

    .contato .btn {
        width: 100%;
        max-width: 250px;
        padding: var(--spacing-sm);
        font-size: var(--font-size-sm);
    }

    /* Footer */
    footer .container {
        padding: var(--spacing-md);
    }

    footer p {
        font-size: var(--font-size-xs);
    }

    /* Floating Budget Button */
    .floating-budget-btn {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
        padding: var(--spacing-sm);
        font-size: var(--font-size-xs);
        border-radius: var(--border-radius);
    }

    /* Modals */
    .project-modal-content,
    .tech-modal-content,
    .history-modal-content,
    .quick-budget-modal-content {
        max-width: 90%;
        padding: var(--spacing-md);
        max-height: 85vh;
        border-radius: var(--border-radius);
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .modal-iframe {
        height: 200px;
        width: 100%;
    }

    .quick-budget-modal-content form {
        width: 100%;
        display: flex;
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .project-type-radio label,
    .services-checkboxes label {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs);
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
    }

    .budget-result {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }

    .budget-submit,
    .clear-btn {
        width: 100%;
        max-width: 200px;
        padding: var(--spacing-sm);
    }
}

/* Very small devices (up to 480px) */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    header .container {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .menu-toggle,
    .theme-toggle {
        padding: var(--spacing-xs);
    }

    .logo {
        font-size: var(--font-size-sm);
    }

    nav.active {
        padding-top: 25vh; /* Slightly less padding for smaller screens */
    }

    nav ul li a {
        font-size: var(--font-size-md); /* Slightly smaller for very small screens */
        color: #ffffff; /* White text for hamburger menu links */
    }

    .tecnologias-grid {
        grid-template-columns: repeat(2, minmax(100px, 1fr)); /* 2 columns for very small screens */
        gap: var(--spacing-sm);
    }

    .tecnologia {
        min-width: 90px;
        min-height: 100px;
        padding: var(--spacing-sm);
    }

    .tecnologia i {
        font-size: 2rem; /* Slightly smaller icons for very small screens */
    }

    .tecnologia h3 {
        font-size: var(--font-size-xs);
    }

    .portfolio-iframe,
    .modal-iframe {
        height: 120px;
    }

    .floating-budget-btn {
        padding: var(--spacing-xs);
        font-size: var(--font-size-xxs);
    }

    .project-modal-content,
    .tech-modal-content,
    .history-modal-content,
    .quick-budget-modal-content {
        max-width: 95%;
        padding: var(--spacing-sm);
    }
}


/* Logo Styling */
.logo-img {
    width: 100px; /* Default size for desktop */
    height: 100px;
    margin-left: -10rem;
    
}


/* Responsive adjustments */
@media (max-width: 768px) {
    .logo-img {
        width: 50px; /* Smaller size for tablets */
        height: 50px;
    }
}

@media (max-width: 480px) {
    .logo-img {
        width: 70px; /* Even smaller for mobile */
        height: 70px;
        margin-left: 7rem;
    }
}

/* Ensure logo container is centered and flexible */
.logo {
    display: flex;
    align-items: center;
    justify-content: center;
}