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

:root {
    /* Colors */
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #4facfe;
    --success-color: #27ae60;
    --error-color: #e74c3c;
    --warning-color: #f39c12;
    --info-color: #3498db;
    --dark-color: #2c3e50;
    --light-color: #f8f9fa;
    --white: #ffffff;
    --black: #000000;
    
    /* Gradients */
    --primary-gradient: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    --accent-gradient: linear-gradient(135deg, var(--accent-color) 0%, var(--primary-color) 100%);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark mode variables */
[data-theme="dark"] {
    --white: #1a1a1a;
    --light-color: #2d2d2d;
    --dark-color: #f8f9fa;
    --black: #ffffff;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--dark-color);
    background: var(--white);
    transition: all var(--transition-base);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== LOADING SPINNER ===== */
.loading-spinner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--white);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity var(--transition-base);
}

.loading-spinner.hidden {
    opacity: 0;
    pointer-events: none;
}

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

.spinner > div {
    width: 12px;
    height: 12px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

.bounce1 { animation-delay: -0.32s; }
.bounce2 { animation-delay: -0.16s; }

@keyframes bounce {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1); }
}

/* ===== FLASH MESSAGES ===== */
.flash-messages {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 1000;
    max-width: 400px;
}

.flash-message {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: slideInRight 0.5s ease;
}

.flash-success { background: var(--success-color); color: var(--white); }
.flash-error { background: var(--error-color); color: var(--white); }
.flash-info { background: var(--info-color); color: var(--white); }

.flash-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.flash-close {
    background: none;
    border: none;
    color: inherit;
    font-size: var(--font-size-lg);
    cursor: pointer;
    margin-left: auto;
}

@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ===== HEADER & NAVIGATION ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 100;
    transition: all var(--transition-base);
}

.nav {
    padding: var(--spacing-md) 0;
}

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

.nav-brand .brand-text {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: var(--font-size-xl);
    font-weight: 800;
    text-decoration: none;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    list-style: none;
}

.nav-link {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 600;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.nav-link:hover {
    background: var(--primary-gradient);
    color: var(--white);
    transform: translateY(-2px);
}

.theme-toggle {
    background: none;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: rotate(180deg);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.nav-toggle .bar {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
    transition: all var(--transition-base);
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--primary-gradient);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" patternUnits="userSpaceOnUse" width="100" height="100"><rect width="100" height="100" fill="none"/><circle cx="20" cy="20" r="2" fill="rgba(255,255,255,0.1)"/><circle cx="80" cy="20" r="1" fill="rgba(255,255,255,0.05)"/><circle cx="40" cy="60" r="1.5" fill="rgba(255,255,255,0.1)"/><circle cx="90" cy="90" r="1" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>') repeat;
    opacity: 0.1;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 900;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, #ffffff 0%, #f0f8ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
}

.hero-description {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-2xl);
    opacity: 0.8;
    line-height: 1.8;
}

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

/* ===== PAGE HERO ===== */
.page-hero {
    background: var(--primary-gradient);
    color: var(--white);
    padding: 120px 0 80px;
    text-align: center;
}

.page-hero-content h1 {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.page-hero-content p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-xl);
    justify-content: center;
    margin-top: var(--spacing-xl);
}

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

/* ===== BUTTONS & CTA ===== */
.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
}

.cta-primary {
    background: var(--white);
    color: var(--primary-color);
}

.cta-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.cta-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.cta-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-3px);
}

.cta-whatsapp {
    background: #25D366;
    color: var(--white);
}

.cta-whatsapp:hover {
    background: #128C7E;
    transform: translateY(-3px);
}

.contact-btn {
    padding: var(--spacing-md);
    text-decoration: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    text-align: center;
    transition: all var(--transition-base);
}

.email-btn {
    background: var(--primary-gradient);
    color: var(--white);
}

.whatsapp-btn {
    background: #25D366;
    color: var(--white);
}

.form-btn {
    background: var(--light-color);
    color: var(--dark-color);
}

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

.btn-submit {
    background: var(--primary-gradient);
    color: var(--white);
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

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

.service-btn {
    background: var(--primary-gradient);
    color: var(--white);
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

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

/* ===== SECTIONS LAYOUT ===== */
section {
    padding: var(--spacing-3xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: #666;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ===== SERVICES SECTION ===== */
.services {
    background: var(--light-color);
}

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

.service-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

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

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

.service-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
}

.service-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-2xl);
    color: var(--white);
    background: var(--primary-gradient);
}

.service-badge {
    background: var(--light-color);
    color: var(--dark-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.service-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-color);
}

.service-description {
    color: #666;
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.service-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.service-price .price-label {
    display: block;
    font-size: var(--font-size-xs);
    color: #666;
    margin-bottom: var(--spacing-xs);
}

.service-price .price-value {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--primary-color);
}

/* ===== STATS SECTION ===== */
.stats {
    background: var(--primary-gradient);
    color: var(--white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
}

.stat-item {
    text-align: center;
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    transition: all var(--transition-base);
}

.stat-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.2);
}

.stat-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 900;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.stat-label {
    font-size: var(--font-size-base);
    opacity: 0.9;
}

/* ===== PROJECTS SECTION ===== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.project-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.project-image-container {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.project-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-image {
    transform: scale(1.1);
}

.project-placeholder {
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.placeholder-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-sm);
}

.placeholder-text {
    font-weight: 600;
    text-align: center;
}

.project-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--warning-color);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.project-content {
    padding: var(--spacing-xl);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
}

.project-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--dark-color);
}

.project-category {
    background: var(--light-color);
    color: var(--dark-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.project-content p {
    color: #666;
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.tech-tag {
    background: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.tech-more {
    background: var(--light-color);
    color: var(--dark-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.project-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.project-date {
    font-size: var(--font-size-sm);
    color: #666;
}

.project-link {
    background: var(--primary-gradient);
    color: var(--white);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    transition: all var(--transition-base);
}

.project-link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ===== WHY CHOOSE / FEATURES SECTION ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-3xl);
    color: var(--white);
    margin-bottom: var(--spacing-lg);
}

.feature-content h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-color);
}

.feature-content p {
    color: #666;
    line-height: 1.6;
}

.feature-number {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 30px;
    height: 30px;
    background: var(--light-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--primary-color);
}

/* ===== CTA SECTION ===== */
.cta-section {
    background: var(--primary-gradient);
    color: var(--white);
    text-align: center;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-icon {
    font-size: var(--font-size-5xl);
    margin-bottom: var(--spacing-lg);
}

.cta-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
}

.cta-description {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-2xl);
    opacity: 0.9;
    line-height: 1.8;
}

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

/* ===== CONTACT SECTION ===== */
.contact-section {
    padding: var(--spacing-3xl) 0;
    background: var(--light-color);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

/* Contact Info Card */
.contact-info {
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.contact-info-header h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--dark-color);
}

.contact-info-header p {
    color: #666;
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    background: var(--light-color);
    transition: all var(--transition-base);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.contact-item:hover {
    background: rgba(102, 126, 234, 0.08);
    transform: translateY(-2px);
    border-color: var(--primary-color);
}

.contact-icon {
    font-size: var(--font-size-xl);
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    color: var(--white);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-details {
    flex: 1;
}

.contact-details strong {
    display: block;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--dark-color);
    font-size: var(--font-size-base);
}

.contact-details a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    display: block;
    margin-bottom: var(--spacing-xs);
    transition: color var(--transition-base);
}

.contact-details a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

.contact-details small {
    color: #666;
    font-size: var(--font-size-sm);
    display: block;
    line-height: 1.4;
}

/* Contact Form */
.contact-form-section {
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.form-header h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--dark-color);
}

.form-header p {
    color: #666;
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

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

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

.form-group label {
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--dark-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--spacing-md);
    border: 2px solid #e2e8f0;
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group textarea {
    height: 120px;
    resize: vertical;
}

/* ===== ABOUT SECTION ===== */
.about-section {
    padding: var(--spacing-3xl) 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.about-text p {
    font-size: var(--font-size-lg);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    color: #444;
}

.personal-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.about-visual {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.profile-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.profile-image {
    width: 150px;
    height: 150px;
    margin: 0 auto var(--spacing-lg);
    border-radius: 50%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
}

.profile-placeholder {
    font-size: var(--font-size-5xl);
    color: var(--white);
}

.profile-info h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--dark-color);
}

.profile-info p {
    color: #666;
    margin-bottom: var(--spacing-sm);
}

.profile-location {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.profile-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--success-color);
    font-weight: 600;
}

.status-indicator {
    width: 8px;
    height: 8px;
    background: var(--success-color);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

.quick-contact {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.stat-info h4 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-color);
}

.stat-info span {
    font-size: var(--font-size-sm);
    color: #666;
}

/* ===== SKILLS SECTION ===== */
.skills-section {
    background: var(--light-color);
    padding: var(--spacing-3xl) 0;
}

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

.skill-item {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.skill-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.skill-info {
    display: flex;
    flex-direction: column;
}

.skill-name {
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--dark-color);
}

.skill-percentage {
    font-weight: 700;
    color: var(--primary-color);
}

.skill-icon {
    font-size: var(--font-size-2xl);
}

.skill-bar {
    height: 8px;
    background: var(--light-color);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.skill-progress {
    height: 100%;
    background: var(--primary-gradient);
    transition: width 1s ease;
}

.skill-description {
    font-size: var(--font-size-sm);
    color: #666;
}

/* ===== NO PROJECTS STATE ===== */
.no-projects {
    padding: var(--spacing-3xl) 0;
    text-align: center;
}

.no-projects-content {
    max-width: 600px;
    margin: 0 auto;
}

.no-projects-icon {
    font-size: 6rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.5;
    color: #666;
}

.no-projects-content h3 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--dark-color);
}

.no-projects-content p {
    font-size: var(--font-size-lg);
    color: #666;
    margin-bottom: var(--spacing-xl);
}

.no-projects-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== FLOATING ELEMENTS ===== */
.whatsapp-float {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    background: #25D366;
    color: var(--white);
    padding: var(--spacing-md);
    border-radius: 50px;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    box-shadow: var(--shadow-xl);
    z-index: 100;
    transition: all var(--transition-base);
}

.whatsapp-float:hover {
    transform: scale(1.1);
    background: #128C7E;
}

.whatsapp-icon {
    font-size: var(--font-size-xl);
}

.whatsapp-text {
    font-weight: 600;
}

.scroll-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    left: var(--spacing-xl);
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: var(--font-size-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translateY(100px);
    transition: all var(--transition-base);
    z-index: 100;
}

.scroll-to-top.visible {
    opacity: 1;
    transform: translateY(0);
}

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

/* ===== FOOTER ===== */
.footer {
    background: var(--dark-color);
    color: var(--white);
    padding: 3rem 0 1rem;
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

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

.footer-brand h3 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-logo {
    height: 40px;
    width: auto;
}

.footer-description {
    color: #bbb;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

.footer-section h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--white);
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-link {
    color: #bbb;
    text-decoration: none;
    transition: color 0.3s ease;
    padding: 0.25rem 0;
}

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

/* Footer Contact Info */
.footer .contact-info {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    background: transparent;
    padding: 0;
    box-shadow: none;
    border: none;
}

.footer .contact-item {
    font-size: 0.9rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 0.75rem;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.footer .contact-item:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary-color);
}

.footer .contact-item strong {
    display: block;
    margin-bottom: 0.25rem;
    color: var(--white);
}

.footer .contact-link {
    color: var(--primary-color);
    text-decoration: none;
}

.footer .contact-link:hover {
    text-decoration: underline;
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 1.5rem;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.copyright {
    color: #bbb;
    font-size: 0.9rem;
}

.powered-by {
    margin-top: 0.25rem;
    font-size: 0.8rem;
    opacity: 0.7;
}

.footer-stats {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-stat {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 1rem;
    font-size: 0.8rem;
    font-weight: 600;
}

/* ===== DARK MODE STYLES ===== */
[data-theme="dark"] body {
    background: #1a1a1a;
    color: #f8f9fa;
}

[data-theme="dark"] .header {
    background: rgba(26, 26, 26, 0.95);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .nav-menu {
    background: #1a1a1a;
}

[data-theme="dark"] .service-card,
[data-theme="dark"] .feature-card,
[data-theme="dark"] .project-card,
[data-theme="dark"] .contact-info,
[data-theme="dark"] .contact-form-section,
[data-theme="dark"] .profile-card,
[data-theme="dark"] .skill-item {
    background: #2d2d2d;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .services,
[data-theme="dark"] .skills-section,
[data-theme="dark"] .contact-section {
    background: #1a1a1a;
}

/* Dark Mode Contact Specific */
[data-theme="dark"] .contact-info-header h3,
[data-theme="dark"] .form-header h3,
[data-theme="dark"] .profile-info h3,
[data-theme="dark"] .service-title,
[data-theme="dark"] .feature-content h3,
[data-theme="dark"] .project-header h3,
[data-theme="dark"] .skill-name {
    color: var(--white);
}

[data-theme="dark"] .contact-info-header p,
[data-theme="dark"] .form-header p,
[data-theme="dark"] .profile-info p {
    color: #bbb;
}

[data-theme="dark"] .contact-item {
    background: #3a3a3a;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .contact-item:hover {
    background: rgba(102, 126, 234, 0.1);
    border-color: var(--primary-color);
}

[data-theme="dark"] .contact-details strong {
    color: var(--white);
}

[data-theme="dark"] .contact-details small {
    color: #bbb;
}

[data-theme="dark"] .form-group label {
    color: var(--white);
}

[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group select,
[data-theme="dark"] .form-group textarea {
    background: #3a3a3a;
    border-color: #4a4a4a;
    color: #f8f9fa;
}

[data-theme="dark"] .form-group input:focus,
[data-theme="dark"] .form-group select:focus,
[data-theme="dark"] .form-group textarea:focus {
    border-color: var(--primary-color);
    background: #404040;
}

[data-theme="dark"] .skill-bar {
    background: #3a3a3a;
}

[data-theme="dark"] .service-badge,
[data-theme="dark"] .project-category,
[data-theme="dark"] .tech-more {
    background: #3a3a3a;
    color: #f8f9fa;
}

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

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

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

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

/* AOS Animation Support */
[data-aos="fade-up"] {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

[data-aos="fade-left"] {
    opacity: 0;
    transform: translateX(30px);
    transition: all 0.8s ease;
}

[data-aos="fade-right"] {
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.8s ease;
}

[data-aos="zoom-in"] {
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.8s ease;
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translate(0) scale(1);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xl);
    }
}

@media (max-width: 768px) {
    /* Navigation */
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--white);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        padding: var(--spacing-xl);
        transition: left var(--transition-base);
        box-shadow: var(--shadow-xl);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

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

    .nav-toggle.active .bar:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    /* Hero */
    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-xl);
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    /* Sections */
    .section-title {
        font-size: var(--font-size-3xl);
    }

    .services-grid,
    .features-grid,
    .projects-grid,
    .skills-grid {
        grid-template-columns: 1fr;
    }

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

    /* Contact */
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .about-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-xl);
    }

    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-stats {
        justify-content: center;
    }

    .social-links {
        justify-content: center;
    }

    /* Other */
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .personal-stats {
        grid-template-columns: 1fr;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .no-projects-actions {
        flex-direction: column;
        align-items: center;
    }

    .whatsapp-float {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
        padding: var(--spacing-sm);
    }

    .whatsapp-text {
        display: none;
    }

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

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero-title {
        font-size: var(--font-size-2xl);
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .footer {
        padding: 2rem 0 1rem;
    }

    .footer-content {
        gap: 1.5rem;
    }

    .footer-stats {
        flex-direction: column;
        align-items: center;
    }

    .contact-info,
    .contact-form-section {
        padding: var(--spacing-lg);
    }

    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }

    .contact-icon {
        align-self: center;
    }
}

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

.d-flex { display: flex; }
.d-block { display: block; }
.d-none { display: none; }

.align-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }

.font-weight-bold { font-weight: 700; }
.font-weight-normal { font-weight: 400; }

.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--secondary-color); }
.text-success { color: var(--success-color); }
.text-error { color: var(--error-color); }

/* ===== ACCESSIBILITY ===== */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 1000;
}

.skip-link:focus {
    top: 6px;
}

/* Focus states */
button:focus,
a:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}