/* ================================
   CSS Variables & Reset
   ================================ */
:root {
    /* Color Palette */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --dark-bg: #0a0e27;
    --dark-surface: #151b3d;
    --light-bg: #f8f9fa;
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --text-dark: #2d3748;
    --accent-color: #667eea;
    --accent-secondary: #f5576c;
    --success-color: #48bb78;
    --error-color: #f56565;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 3rem;
    --font-size-4xl: 4rem;
    
    /* Effects */
    --border-radius: 1rem;
    --transition-speed: 0.3s;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 30px rgba(102, 126, 234, 0.3);
}

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

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

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

/* ================================
   Navigation Bar
   ================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: all var(--transition-speed) ease;
    background: transparent;
}

.navbar.scrolled {
    padding: 1rem 0;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-text {
    display: flex;
    align-items: center;
}

.header-logo {
    width: 40px;
    height: 40px;
    margin-right: 10px;
    vertical-align: middle;
}

.company-name {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -1px;
    line-height: 1;
}

.company-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: -4px;
    letter-spacing: 2px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 1rem;
    transition: color var(--transition-speed) ease;
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transform: translateX(-50%);
    transition: width var(--transition-speed) ease;
}

.nav-link:hover {
    color: var(--accent-color);
}

.nav-link:hover::before {
    width: 80%;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

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

/* ================================
   Hero Section
   ================================ */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-md);
    overflow: hidden;
    background: linear-gradient(135deg, #0a0e27 0%, #1a1f4d 50%, #2d1b4e 100%);
}

.particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.particle {
    position: absolute;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.8) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 20s infinite ease-in-out;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translate(100px, -1000px) scale(0);
        opacity: 0;
    }
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 900px;
    animation: fadeInUp 1s ease-out;
}

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

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    letter-spacing: -2px;
}

.hero-title-line {
    display: block;
    background: linear-gradient(135deg, #ffffff 0%, #667eea 50%, #f5576c 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientShift 5s ease infinite;
    background-size: 200% 200%;
    padding-bottom: 0.1em;
    overflow: visible;
}

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

.hero-subtitle {
    font-size: clamp(1rem, 3vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

/* ================================
   Buttons
   ================================ */
.btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    overflow: hidden;
    transition: all var(--transition-speed) ease;
    z-index: 1;
}

.btn-primary {
    background: var(--primary-gradient);
    color: var(--text-primary);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(102, 126, 234, 0.6);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.btn-ripple {
    position: absolute;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    transform: scale(0);
    pointer-events: none;
}

.btn-ripple.animate {
    animation: ripple 0.6s ease-out;
}

@keyframes ripple {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

.btn-text {
    position: relative;
    z-index: 2;
}

/* ================================
   Scroll Indicator
   ================================ */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 25px;
    display: flex;
    justify-content: center;
    padding-top: 10px;
}

.wheel {
    width: 4px;
    height: 10px;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% {
        transform: translateY(0);
        opacity: 1;
    }
    100% {
        transform: translateY(20px);
        opacity: 0;
    }
}

/* ================================
   Sections
   ================================ */
.about-section,
.contact-section {
    padding: var(--spacing-xl) var(--spacing-md);
    position: relative;
}

.about-section {
    background: linear-gradient(180deg, var(--dark-bg) 0%, var(--dark-surface) 100%);
}

.contact-section {
    background: linear-gradient(180deg, var(--dark-surface) 0%, var(--dark-bg) 100%);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

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

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, #ffffff 0%, #667eea 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* ================================
   Service Cards
   ================================ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.service-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    transition: all var(--transition-speed) ease;
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity var(--transition-speed) ease;
    z-index: 0;
}

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

.service-card:hover::before {
    opacity: 0.1;
}

.service-card > * {
    position: relative;
    z-index: 1;
}

.service-icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--spacing-md);
    color: var(--accent-color);
    transition: all var(--transition-speed) ease;
}

.service-card:hover .service-icon {
    transform: scale(1.1) rotate(5deg);
    color: #ffffff;
}

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

.service-description {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ================================
   Fade-in Animations
   ================================ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in[data-delay="100"] {
    transition-delay: 0.1s;
}

.fade-in[data-delay="200"] {
    transition-delay: 0.2s;
}

.fade-in[data-delay="300"] {
    transition-delay: 0.3s;
}

.fade-in[data-delay="400"] {
    transition-delay: 0.4s;
}

/* ================================
   Contact Section
   ================================ */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

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

.glass-effect {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
}

.info-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.info-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    align-items: flex-start;
}

.info-icon {
    width: 24px;
    height: 24px;
    color: var(--accent-color);
    flex-shrink: 0;
}

.info-label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

.info-value {
    font-size: var(--font-size-base);
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-speed) ease;
}

.info-value:hover {
    color: var(--accent-color);
}

/* ================================
   Social Links
   ================================ */
.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: all var(--transition-speed) ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.social-link svg {
    width: 24px;
    height: 24px;
}

.social-link:hover {
    background: var(--primary-gradient);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

/* ================================
   Contact Form
   ================================ */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

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

.form-group label {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.required {
    color: var(--accent-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    font-family: var(--font-primary);
    transition: all var(--transition-speed) ease;
    cursor: pointer;
}

/* Select-specific styling */
.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23a0aec0' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 20px;
    padding-right: 3rem;
}

.form-group select option {
    background: var(--dark-surface);
    color: var(--text-primary);
    padding: 0.5rem;
}

/* Placeholder styling for select */
.form-group select option[value=""] {
    color: var(--text-secondary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

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

.error-message {
    color: var(--error-color);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    display: none;
    animation: slideDown 0.3s ease;
}

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

.form-group.error input,
.form-group.error select,
.form-group.error textarea {
    border-color: var(--error-color);
}

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

/* ================================
   Submit Button
   ================================ */
.btn-submit {
    background: var(--primary-gradient);
    color: var(--text-primary);
    padding: 1.25rem 2.5rem;
    margin-top: var(--spacing-md);
    font-size: var(--font-size-lg);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-submit:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(102, 126, 234, 0.6);
}

.btn-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

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

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

.btn-submit.loading .btn-text {
    opacity: 0.7;
}

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

/* ================================
   Form Success Message
   ================================ */
.success-message {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: rgba(72, 187, 120, 0.1);
    border: 1px solid var(--success-color);
    border-radius: 0.5rem;
    color: var(--success-color);
    text-align: center;
    animation: slideDown 0.5s ease;
}

.success-message.show {
    display: flex;
}

.success-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--success-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: var(--spacing-sm);
}

.success-message h3 {
    font-size: var(--font-size-xl);
    color: var(--text-primary);
    margin: 0;
}

.success-message p {
    margin: 0;
    font-size: var(--font-size-base);
    color: var(--text-secondary);
}

.send-another-btn {
    margin-top: 20px;
    padding: 12px 30px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.send-another-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

/* ================================
   Form Error Message
   ================================ */
.form-error {
    display: none;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    background: rgba(245, 101, 101, 0.1);
    border: 1px solid var(--error-color);
    border-radius: 0.5rem;
    color: var(--error-color);
    animation: slideDown 0.5s ease;
}

.form-error.show {
    display: flex;
}

.form-error svg {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
}

.form-error p {
    margin: 0;
    font-size: var(--font-size-base);
}

/* ================================
   Footer
   ================================ */
.footer {
    padding: var(--spacing-lg) var(--spacing-md);
    text-align: center;
    background: var(--dark-bg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

/* ================================
   Responsive Design
   ================================ */
@media (max-width: 968px) {
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        flex-direction: column;
        background: rgba(10, 14, 39, 0.98);
        backdrop-filter: blur(10px);
        width: 100%;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
        transition: left var(--transition-speed) ease;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(8px, -8px);
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-md: 1.5rem;
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }
    
    .hero-section {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .section-header {
        margin-bottom: var(--spacing-md);
    }
}

/* ================================
   Accessibility
   ================================ */
.skip-to-content {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--accent-color);
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: 10000;
    transition: top var(--transition-speed) ease;
}

.skip-to-content:focus {
    top: 0;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ================================
   Print Styles
   ================================ */
@media print {
    .navbar,
    .scroll-indicator,
    .particles {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
}