/* ===================================
   CSS Variables & Reset
   =================================== */
:root {
    /* Colors - Paleta Clara */
    --color-primary: #4F46E5;
    --color-primary-dark: #4338CA;
    --color-primary-light: #818CF8;
    --color-secondary: #06B6D4;
    --color-secondary-dark: #0891B2;
    --color-accent: #F59E0B;
    
    /* Neutral Colors */
    --color-white: #FFFFFF;
    --color-bg-light: #F9FAFB;
    --color-bg-lighter: #F3F4F6;
    --color-text-dark: #1F2937;
    --color-text-medium: #4B5563;
    --color-text-light: #6B7280;
    --color-border: #E5E7EB;
    --color-shadow: rgba(0, 0, 0, 0.1);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #4F46E5 0%, #06B6D4 100%);
    --gradient-accent: linear-gradient(135deg, #F59E0B 0%, #EF4444 100%);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-heading: 'Poppins', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Sizes */
    --container-width: 1200px;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 20px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.15);
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--color-text-dark);
    background-color: var(--color-white);
    overflow-x: hidden;
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-dark);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    color: var(--color-text-medium);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-normal);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ===================================
   Utility Classes
   =================================== */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xl) 0;
}

.section-bg {
    background-color: var(--color-bg-light);
}

.text-gradient {
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-subtitle {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.section-title {
    margin-bottom: var(--spacing-sm);
}

.section-description {
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.125rem;
    color: var(--color-text-medium);
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    transition: var(--transition-normal);
    text-align: center;
}

.btn i {
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-secondary);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* ===================================
   Header & Navigation
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition-normal);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem var(--spacing-md);
    min-height: 80px;
}

.nav-brand .logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-dark);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--gradient-secondary);
    color: var(--color-white);
    border-radius: var(--border-radius-sm);
    font-size: 1.25rem;
    font-weight: 800;
}

.logo-text {
    font-family: var(--font-heading);
}

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

.nav-link {
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-medium);
    position: relative;
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: var(--gradient-secondary);
    transition: var(--transition-normal);
}

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

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

/* Mobile Menu Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
}

.nav-toggle span {
    width: 28px;
    height: 3px;
    background: var(--color-text-dark);
    border-radius: 2px;
    transition: var(--transition-normal);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    background: linear-gradient(135deg, #FFFFFF 0%, #F9FAFB 100%);
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero-text {
    z-index: 2;
}

.hero-subtitle {
    display: inline-block;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-sm);
}

.hero-title {
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--color-text-medium);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: var(--spacing-lg);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.25rem;
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-light);
    font-weight: 500;
}

/* Hero Image */
.hero-image {
    position: relative;
    z-index: 2;
}

.hero-image-wrapper {
    position: relative;
    width: 100%;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-circle {
    width: 400px;
    height: 400px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    opacity: 0.1;
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.floating-card {
    position: absolute;
    background: var(--color-white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 600;
    animation: float 3s ease-in-out infinite;
}

.floating-card i {
    font-size: 2rem;
    color: var(--color-primary);
}

.card-1 {
    top: 10%;
    left: 5%;
    animation-delay: 0s;
}

.card-2 {
    top: 50%;
    right: 0;
    animation-delay: 1s;
}

.card-3 {
    bottom: 10%;
    left: 10%;
    animation-delay: 2s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* Hero Shapes */
.hero-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    overflow: hidden;
    z-index: 1;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.05;
}

.shape-1 {
    width: 500px;
    height: 500px;
    background: var(--color-primary);
    top: -200px;
    right: -200px;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: var(--color-secondary);
    bottom: -100px;
    left: -100px;
}

.shape-3 {
    width: 200px;
    height: 200px;
    background: var(--color-accent);
    top: 50%;
    right: 10%;
}

/* ===================================
   About Section
   =================================== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.about-image-wrapper {
    position: relative;
    background: var(--gradient-secondary);
    border-radius: var(--border-radius-lg);
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.about-badge {
    position: absolute;
    bottom: 2rem;
    left: 2rem;
    background: var(--color-white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 2;
}

.about-badge i {
    font-size: 2.5rem;
    color: var(--color-accent);
}

.about-badge strong {
    display: block;
    font-size: 1.5rem;
    color: var(--color-text-dark);
}

.about-badge span {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.about-text h3 {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-dark);
}

.about-text p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin: var(--spacing-md) 0;
}

.feature-item {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--color-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-secondary);
    color: var(--color-white);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.feature-icon i {
    font-size: 1.5rem;
}

.feature-content h4 {
    margin-bottom: 0.5rem;
    color: var(--color-text-dark);
}

.feature-content p {
    margin-bottom: 0.25rem;
    font-size: 0.95rem;
    color: var(--color-text-medium);
}

.about-skills {
    margin-top: var(--spacing-md);
}

.about-skills h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-dark);
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: var(--color-bg-lighter);
    color: var(--color-text-dark);
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition-normal);
}

.skill-tag:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-2px);
}

.skill-tag i {
    font-size: 1.25rem;
}

/* ===================================
   Services Section
   =================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--color-white);
    padding: 2.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
    border: 2px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-primary);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-secondary);
    color: var(--color-white);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 2rem;
}

.service-card h3 {
    margin-bottom: 1rem;
    color: var(--color-text-dark);
}

.service-card p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.service-features {
    list-style: none;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0;
    color: var(--color-text-medium);
    font-size: 0.95rem;
}

.service-features i {
    color: var(--color-primary);
    font-size: 1rem;
}

/* ===================================
   Portfolio Section
   =================================== */
.portfolio-grid {
    display: grid;
    gap: 3rem;
    margin-bottom: var(--spacing-lg);
}

.portfolio-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition-normal);
}

.portfolio-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.portfolio-item:nth-child(even) {
    grid-template-columns: 1fr 1fr;
}

.portfolio-item:nth-child(even) .portfolio-image {
    order: 2;
}

.portfolio-item:nth-child(even) .portfolio-content {
    order: 1;
}

.portfolio-image {
    position: relative;
    background: var(--gradient-secondary);
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.portfolio-placeholder {
    font-size: 6rem;
    color: rgba(255, 255, 255, 0.3);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(79, 70, 229, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

.portfolio-image:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-link {
    width: 80px;
    height: 80px;
    background: var(--color-white);
    color: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    transform: scale(0);
    transition: var(--transition-normal);
}

.portfolio-overlay:hover .portfolio-link {
    transform: scale(1);
}

.portfolio-content {
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.portfolio-category {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--color-bg-lighter);
    color: var(--color-primary);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 50px;
}

.portfolio-title {
    margin-bottom: 1rem;
    color: var(--color-text-dark);
}

.portfolio-description {
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.portfolio-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.portfolio-tech span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    color: var(--color-text-medium);
    font-weight: 500;
}

.portfolio-tech i {
    color: var(--color-primary);
}

.portfolio-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-primary);
    font-weight: 600;
    transition: var(--transition-normal);
}

.portfolio-btn:hover {
    gap: 1rem;
}

.portfolio-cta {
    text-align: center;
    padding: 3rem;
    background: var(--gradient-secondary);
    border-radius: var(--border-radius-lg);
    color: var(--color-white);
}

.portfolio-cta p {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--color-white);
}

/* ===================================
   Contact Section
   =================================== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-lg);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-info-item {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--color-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-secondary);
    color: var(--color-white);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 1.5rem;
}

.contact-text h4 {
    margin-bottom: 0.5rem;
    color: var(--color-text-dark);
}

.contact-text p {
    margin-bottom: 0.25rem;
    font-size: 0.95rem;
    color: var(--color-text-medium);
}

.contact-banner {
    padding: 2rem;
    background: var(--gradient-secondary);
    color: var(--color-white);
    border-radius: var(--border-radius);
    text-align: center;
}

.contact-banner i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.contact-banner h4 {
    color: var(--color-white);
    margin-bottom: 0.5rem;
}

.contact-banner p {
    color: rgba(255, 255, 255, 0.9);
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--color-white);
    padding: 3rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    color: var(--color-text-dark);
    font-size: 0.95rem;
}

.required {
    color: #EF4444;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper i {
    position: absolute;
    left: 1rem;
    color: var(--color-text-light);
    font-size: 1rem;
}

.input-wrapper input,
.input-wrapper select,
.input-wrapper textarea {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--color-text-dark);
    transition: var(--transition-normal);
    background: var(--color-white);
}

.input-wrapper textarea {
    resize: vertical;
    min-height: 120px;
}

.input-wrapper input:focus,
.input-wrapper select:focus,
.input-wrapper textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.error-message {
    color: #EF4444;
    font-size: 0.875rem;
    display: none;
}

.form-group.error .error-message {
    display: block;
}

.form-group.error input,
.form-group.error select,
.form-group.error textarea {
    border-color: #EF4444;
}

.btn-loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--color-white);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.btn.loading .btn-loader {
    display: block;
}

.btn.loading #btnText,
.btn.loading i {
    display: none;
}

.form-status {
    padding: 1rem;
    border-radius: var(--border-radius-sm);
    text-align: center;
    font-weight: 600;
    display: none;
}

.form-status.success {
    display: block;
    background: #D1FAE5;
    color: #065F46;
}

.form-status.error {
    display: block;
    background: #FEE2E2;
    color: #991B1B;
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--color-text-dark);
    color: var(--color-white);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 3rem;
    margin-bottom: var(--spacing-md);
}

.footer-brand .logo {
    margin-bottom: 1rem;
}

.footer-brand .logo-icon {
    background: var(--color-white);
    color: var(--color-primary);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.5rem;
}

.footer-description {
    line-height: 1.8;
}

.footer h4 {
    color: var(--color-white);
    margin-bottom: 1.5rem;
    font-size: 1.125rem;
}

.footer ul {
    list-style: none;
}

.footer ul li {
    margin-bottom: 0.75rem;
}

.footer ul li a,
.footer ul li span {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer ul li a:hover {
    color: var(--color-white);
    padding-left: 0.5rem;
}

.footer ul li i {
    color: var(--color-primary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-copyright p,
.footer-credits p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.95rem;
}

.footer-credits i {
    color: #EF4444;
}

/* ===================================
   Scroll to Top Button
   =================================== */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--gradient-secondary);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 999;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-5px);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-image {
        display: none;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .about-image-wrapper {
        height: 400px;
    }
    
    .portfolio-item,
    .portfolio-item:nth-child(even) {
        grid-template-columns: 1fr;
    }
    
    .portfolio-item:nth-child(even) .portfolio-image {
        order: 1;
    }
    
    .portfolio-item:nth-child(even) .portfolio-content {
        order: 2;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    /* Mobile Navigation */
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--color-white);
        transition: var(--transition-normal);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-list {
        flex-direction: column;
        padding: 2rem;
        gap: 0;
    }
    
    .nav-item {
        width: 100%;
        border-bottom: 1px solid var(--color-border);
    }
    
    .nav-link {
        display: block;
        padding: 1rem 0;
    }
    
    /* Sections */
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    .hero {
        min-height: auto;
        padding: 6rem 0 4rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .contact-form-wrapper {
        padding: 2rem;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .navbar {
        padding: 1rem;
    }
    
    .logo-text {
        font-size: 1.125rem;
    }
    
    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }
    
    .floating-card {
        padding: 1rem;
        font-size: 0.875rem;
    }
    
    .floating-card i {
        font-size: 1.5rem;
    }
    
    .service-card {
        padding: 2rem 1.5rem;
    }
    
    .portfolio-content {
        padding: 2rem 1.5rem;
    }
    
    .contact-form-wrapper {
        padding: 1.5rem;
    }
}

/* ===================================
   AOS Animation Override (Optional)
   =================================== */
[data-aos] {
    opacity: 0;
    transition-property: opacity, transform;
}

[data-aos].aos-animate {
    opacity: 1;
}

[data-aos="fade-up"] {
    transform: translateY(30px);
}

[data-aos="fade-up"].aos-animate {
    transform: translateY(0);
}

[data-aos="fade-left"] {
    transform: translateX(-30px);
}

[data-aos="fade-left"].aos-animate {
    transform: translateX(0);
}

[data-aos="fade-right"] {
    transform: translateX(30px);
}

[data-aos="fade-right"].aos-animate {
    transform: translateX(0);
}