/* ===============================================
   IT Zolutions - Main Stylesheet
   Modern, Interactive, Responsive Design
   =============================================== */

/* ===== CSS Variables ===== */
:root {
    /* Colors */
    --primary: #2957CB;
    --primary-light: #4a7aff;
    --primary-dark: #1a3d8f;
    --secondary: #00D9FF;
    --accent: #FF6B9D;
    --dark-bg: #0A0E1A;
    --dark-card: #151B2E;
    --text-primary: #FFFFFF;
    --text-secondary: #B4BCD0;
    --text-muted: #6B7280;
    --border: rgba(255, 255, 255, 0.1);
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #2957CB 0%, #00D9FF 100%);
    --gradient-accent: linear-gradient(135deg, #FF6B9D 0%, #FFA500 100%);
    --gradient-dark: linear-gradient(135deg, #0A0E1A 0%, #151B2E 100%);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 30px rgba(41, 87, 203, 0.5);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===== Preloader ===== */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--dark-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.5s, visibility 0.5s;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.preloader-content {
    text-align: center;
}

.tech-circle {
    width: 80px;
    height: 80px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

.loading-text {
    font-size: 1.5rem;
    font-weight: 600;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 14, 26, 0.8);
    backdrop-filter: blur(20px);
    z-index: 1000;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    padding: 0.5rem 0;
    box-shadow: var(--shadow-lg);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    transition: transform var(--transition-normal);
}

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

.logo-icon {
    font-size: 2rem;
    filter: drop-shadow(0 0 10px var(--primary));
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition-normal);
}

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

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
    z-index: 1001;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

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

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

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

/* ===== Buttons ===== */
.cta-button,
.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-primary);
    padding: 0.75rem 2rem;
    border-radius: var(--radius-xl);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.cta-button::before,
.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.cta-button:hover::before,
.btn-primary:hover::before {
    left: 100%;
}

.cta-button:hover,
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    padding: 0.75rem 2rem;
    border-radius: var(--radius-xl);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border: 2px solid var(--border);
    transition: all var(--transition-normal);
}

.btn-secondary:hover {
    border-color: var(--primary);
    background: rgba(41, 87, 203, 0.1);
    transform: translateY(-2px);
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8rem 2rem 4rem;
    position: relative;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: var(--primary);
    border-radius: 50%;
    animation: float 10s infinite;
    opacity: 0.6;
}

.particle:nth-child(1) { top: 20%; left: 20%; animation-delay: 0s; }
.particle:nth-child(2) { top: 40%; left: 60%; animation-delay: 2s; }
.particle:nth-child(3) { top: 60%; left: 30%; animation-delay: 4s; }
.particle:nth-child(4) { top: 80%; left: 70%; animation-delay: 1s; }
.particle:nth-child(5) { top: 30%; left: 80%; animation-delay: 3s; }
.particle:nth-child(6) { top: 70%; left: 50%; animation-delay: 5s; }

@keyframes float {
    0%, 100% { transform: translateY(0) translateX(0); }
    25% { transform: translateY(-20px) translateX(10px); }
    50% { transform: translateY(-40px) translateX(-10px); }
    75% { transform: translateY(-20px) translateX(5px); }
}

.hero-content {
    max-width: 1400px;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-label {
    display: inline-block;
    background: rgba(41, 87, 203, 0.2);
    color: var(--secondary);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-xl);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(0, 217, 255, 0.3);
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.2s backwards;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    animation: fadeInUp 0.8s ease 0.4s backwards;
}

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

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    animation: fadeInUp 0.8s ease 0.6s backwards;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

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

.hero-visual {
    position: relative;
    height: 500px;
    animation: fadeIn 1s ease 0.5s backwards;
}

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

.floating-card {
    position: absolute;
    background: var(--dark-card);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: var(--shadow-lg);
    animation: floatCard 3s ease-in-out infinite;
}

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

.card-2 {
    top: 45%;
    right: 10%;
    animation-delay: 1s;
}

.card-3 {
    bottom: 10%;
    left: 15%;
    animation-delay: 2s;
}

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

.card-icon {
    font-size: 2rem;
}

.card-text {
    font-weight: 600;
    font-size: 0.9rem;
}

.hero-circle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    height: 400px;
    border: 2px solid var(--border);
    border-radius: 50%;
    animation: rotate 20s linear infinite;
}

.hero-circle::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border-radius: 50%;
    border: 2px solid transparent;
    border-top-color: var(--primary);
    animation: rotate 3s linear infinite;
}

@keyframes rotate {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* ===== Diagnosis Section ===== */
.diagnosis-section {
    padding: 6rem 2rem;
    background: var(--gradient-dark);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-badge {
    display: inline-block;
    background: rgba(41, 87, 203, 0.2);
    color: var(--secondary);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-xl);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    border: 1px solid rgba(0, 217, 255, 0.3);
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.diagnosis-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.computer-illustration {
    position: relative;
    height: 600px;
    background: var(--dark-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    padding: 2rem;
}

.pc-part {
    position: absolute;
    background: rgba(41, 87, 203, 0.1);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    padding: 1rem;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.pc-part:hover {
    transform: scale(1.05);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
    z-index: 10;
}

.pc-part:hover .tooltip {
    opacity: 1;
    transform: translateY(-10px);
}

.pc-part.active {
    background: rgba(41, 87, 203, 0.3);
    border-color: var(--secondary);
    animation: pulse 1s ease infinite;
}

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

.tooltip {
    position: absolute;
    top: -40px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--dark-bg);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

/* PC Part Positions */
.monitor {
    top: 10%;
    left: 30%;
    width: 200px;
    height: 150px;
}

.screen-content {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a1f3a 0%, #2a3f5f 100%);
    border-radius: var(--radius-sm);
    position: relative;
    overflow: hidden;
}

.screen-glitch {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    animation: glitch 3s infinite;
}

@keyframes glitch {
    0%, 100% { left: -100%; }
    50% { left: 100%; }
}

.tower {
    bottom: 20%;
    left: 35%;
    width: 120px;
    height: 180px;
}

.tower-lights {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.light {
    width: 10px;
    height: 10px;
    background: var(--primary);
    border-radius: 50%;
    animation: blink 2s infinite alternate;
}

.light:nth-child(2) {
    animation-delay: 0.5s;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0.3; }
}

.harddrive {
    bottom: 25%;
    right: 20%;
    width: 100px;
    height: 80px;
}

.hdd-icon {
    font-size: 2.5rem;
    text-align: center;
}

.ram {
    top: 50%;
    right: 15%;
    width: 140px;
    height: 60px;
}

.ram-chips {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    margin-top: 0.5rem;
}

.ram-chips span {
    width: 30px;
    height: 20px;
    background: var(--primary);
    border-radius: 2px;
}

.keyboard {
    bottom: 10%;
    left: 20%;
    width: 180px;
    height: 60px;
}

.keys {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.keys span {
    height: 15px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
}

.power {
    top: 20%;
    right: 10%;
    width: 80px;
    height: 80px;
}

.power-icon {
    font-size: 2.5rem;
    text-align: center;
    animation: powerPulse 2s infinite;
}

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

.diagnosis-feedback {
    background: var(--dark-card);
    padding: 3rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    text-align: center;
    transition: all var(--transition-normal);
}

.diagnosis-feedback.active {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.feedback-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.diagnosis-feedback h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.diagnosis-feedback p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

.diagnosis-feedback .btn-primary {
    margin-top: 1rem;
}

/* ===== Services Section ===== */
.services-section {
    padding: 6rem 2rem;
    background: var(--dark-bg);
}

.services-grid {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--dark-card);
    padding: 2.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: all var(--transition-normal);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 3px;
    background: var(--gradient-primary);
    transition: left 0.5s;
}

.service-card:hover::before {
    left: 0;
}

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

.service-icon-wrapper {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    transition: all var(--transition-normal);
}

.service-card:hover .service-icon-wrapper {
    transform: rotateY(360deg);
}

.service-icon {
    font-size: 2.5rem;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.service-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.service-btn {
    background: transparent;
    color: var(--primary);
    border: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 1rem;
    transition: all var(--transition-normal);
}

.service-btn:hover {
    gap: 1rem;
    color: var(--secondary);
}

/* ===== About Section ===== */
.about-section {
    padding: 6rem 2rem;
    background: var(--gradient-dark);
}

.about-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-image {
    position: relative;
}

.image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.image-wrapper img {
    width: 100%;
    height: 600px;
    object-fit: cover;
    transition: transform 0.5s;
}

.image-wrapper:hover img {
    transform: scale(1.1);
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(41, 87, 203, 0.3), transparent);
}

.experience-badge {
    position: absolute;
    bottom: 2rem;
    right: 2rem;
    background: var(--gradient-primary);
    padding: 2rem;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-xl);
}

.badge-number {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
}

.badge-text {
    font-size: 0.9rem;
    opacity: 0.9;
}

.about-content {
    text-align: left;
}

.about-text {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.about-features {
    margin: 2rem 0;
}

.feature-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    align-items: flex-start;
}

.feature-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-weight: 700;
}

.feature-text h4 {
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
}

.feature-text p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ===== Contact Section ===== */
.contact-section {
    padding: 6rem 2rem;
    background: var(--dark-bg);
}

.contact-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
}

.contact-description {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

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

.contact-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.contact-item p {
    color: var(--text-secondary);
}

.contact-item a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.contact-item a:hover {
    color: var(--secondary);
}

.contact-form-wrapper {
    background: var(--dark-card);
    padding: 3rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(10, 14, 26, 0.5);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--transition-normal);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(41, 87, 203, 0.1);
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.form-checkbox input[type="checkbox"] {
    width: auto;
}

.submit-btn {
    width: 100%;
    font-size: 1.1rem;
    justify-content: center;
}

/* ===== Footer ===== */
.footer {
    background: var(--gradient-dark);
    padding: 4rem 2rem 2rem;
    border-top: 1px solid var(--border);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

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

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

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

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

.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

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

.social-links a {
    font-size: 1.5rem;
    transition: transform var(--transition-normal);
}

.social-links a:hover {
    transform: translateY(-3px);
}

.footer-bottom {
    max-width: 1400px;
    margin: 0 auto;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 2rem;
}

/* ===== Modal ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: block;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
}

.modal-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--dark-card);
    padding: 3rem;
    border-radius: var(--radius-lg);
    max-width: 800px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--border);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translate(-50%, -60%);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%);
    }
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: transparent;
    border: none;
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    transform: rotate(90deg);
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .hero-content,
    .diagnosis-container,
    .about-container,
    .contact-container {
        grid-template-columns: 1fr;
    }
    
    .hero-visual {
        height: 400px;
    }
    
    .computer-illustration {
        height: 500px;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 80%;
        height: calc(100vh - 70px);
        background: rgba(10, 14, 26, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 2rem;
        transition: right var(--transition-normal);
        border-left: 1px solid var(--border);
        align-items: flex-start;
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
    }
    
    .computer-illustration {
        height: 400px;
    }
}