/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #10B981;
    --primary-dark: #059669;
    --secondary-color: #6366F1;
    --accent-color: #F59E0B;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --background: #FFFFFF;
    --background-secondary: #F9FAFB;
    --border-color: #E5E7EB;
    --shadow-light: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-medium: 0 8px 40px rgba(0, 0, 0, 0.12);
    --shadow-heavy: 0 16px 60px rgba(0, 0, 0, 0.16);
    --gradient-primary: linear-gradient(135deg, #10B981 0%, #6366F1 100%);
    --gradient-accent: linear-gradient(135deg, #F59E0B 0%, #EF4444 100%);
    --blur-backdrop: blur(20px);
    --border-radius: 12px;
    --border-radius-large: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --navbar-bg: rgba(255, 255, 255, 0.9);
    --navbar-border: rgba(0, 0, 0, 0.1);
    --card-bg: rgba(255, 255, 255, 0.9);
    --modal-bg: rgba(0, 0, 0, 0.5);
}

/* Dark mode variables */
[data-theme="dark"] {
    --text-primary: #FFFFFF;
    --text-secondary: #D1D5DB;
    --background: #000000;
    --background-secondary: #111111;
    --border-color: #333333;
    --shadow-light: 0 4px 20px rgba(255, 255, 255, 0.05);
    --shadow-medium: 0 8px 40px rgba(255, 255, 255, 0.08);
    --shadow-heavy: 0 16px 60px rgba(255, 255, 255, 0.12);
    --navbar-bg: rgba(0, 0, 0, 0.9);
    --navbar-border: rgba(255, 255, 255, 0.1);
    --card-bg: rgba(17, 17, 17, 0.9);
    --modal-bg: rgba(0, 0, 0, 0.8);
    --primary-color: #34D399;
    --primary-dark: #10B981;
    --secondary-color: #818CF8;
    --accent-color: #FBBF24;
}

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

html {
    scroll-behavior: smooth;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    min-width: 140px;
}

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

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    backdrop-filter: var(--blur-backdrop);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--navbar-bg);
    backdrop-filter: var(--blur-backdrop);
    border-bottom: 1px solid var(--navbar-border);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.nav-controls {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    width: 50px;
    height: 28px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    transition: var(--transition);
    overflow: hidden;
}

.theme-toggle:hover {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.theme-toggle .sun-icon,
.theme-toggle .moon-icon {
    position: absolute;
    font-size: 14px;
    transition: var(--transition);
}

.theme-toggle .sun-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.theme-toggle .moon-icon {
    opacity: 0;
    transform: rotate(180deg) scale(0);
}

[data-theme="dark"] .theme-toggle .sun-icon {
    opacity: 0;
    transform: rotate(-180deg) scale(0);
}

[data-theme="dark"] .theme-toggle .moon-icon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

.nav-logo h2 {
    font-size: 24px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

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

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

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

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

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition);
    border-radius: 2px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--background-secondary);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(16, 185, 129, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(245, 158, 11, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

[data-theme="dark"] .hero::before {
    background: 
        radial-gradient(circle at 20% 50%, rgba(52, 211, 153, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(129, 140, 248, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(251, 191, 36, 0.15) 0%, transparent 50%);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-size: clamp(2.5rem, 4vw, 4rem);
    font-weight: 700;
    margin-bottom: 24px;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-visual {
    position: relative;
    height: 500px;
    animation: fadeInRight 1s ease-out 0.3s both;
}

.floating-elements {
    position: relative;
    width: 100%;
    height: 100%;
}

.floating-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: var(--blur-backdrop);
    padding: 24px;
    border-radius: var(--border-radius-large);
    box-shadow: var(--shadow-medium);
    border: 1px solid rgba(255, 255, 255, 0.3);
    animation: float 6s ease-in-out infinite;
}

.floating-card h3 {
    font-size: 18px;
    margin-top: 12px;
    color: var(--text-primary);
}

.card-icon {
    font-size: 32px;
    margin-bottom: 8px;
}

.card-1 {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.card-2 {
    top: 50%;
    right: 20%;
    animation-delay: 2s;
}

.card-3 {
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

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

/* Services Section */
.services {
    padding: 120px 0;
    background: var(--background);
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    font-size: clamp(2rem, 3vw, 3rem);
    margin-bottom: 16px;
    font-weight: 700;
}

.section-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    max-width: 1200px;
    margin: 0 auto;
}

.service-card {
    background: var(--card-bg);
    backdrop-filter: var(--blur-backdrop);
    border-radius: var(--border-radius-large);
    padding: 40px 32px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-heavy);
}

.service-card.featured {
    background: var(--gradient-primary);
    color: white;
    border: none;
}

.service-card.featured .service-title,
.service-card.featured .service-description,
.service-card.featured .service-features {
    color: white;
}

.featured-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 8px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.service-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: white;
}

.service-card.featured .service-icon {
    background: rgba(255, 255, 255, 0.2);
}

.service-title {
    font-size: 24px;
    margin-bottom: 16px;
    font-weight: 600;
}

.service-description {
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.6;
}

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

.service-features li {
    padding: 8px 0;
    position: relative;
    padding-left: 24px;
    color: var(--text-secondary);
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.service-card.featured .service-features li::before {
    color: white;
}

/* About Section */
.about {
    padding: 120px 0;
    background: var(--background-secondary);
}

/* Contact Section */
.contact {
    padding: 120px 0;
    background: var(--background);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contact-description {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.7;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.contact-text p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 16px;
}

.contact-cta {
    display: flex;
    justify-content: center;
    align-items: center;
}

.contact-card {
    background: var(--card-bg);
    backdrop-filter: var(--blur-backdrop);
    padding: 40px;
    border-radius: var(--border-radius-large);
    border: 1px solid var(--border-color);
    text-align: center;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    max-width: 400px;
    width: 100%;
}

.contact-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
}

.contact-card h3 {
    font-size: 24px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.contact-card p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 16px;
    line-height: 1.6;
}

.contact-features {
    margin-top: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    color: var(--text-secondary);
}

.feature-icon {
    font-size: 16px;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-description {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.7;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

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

.stat-number {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.tech-stack {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.tech-item {
    background: var(--card-bg);
    padding: 20px;
    border-radius: var(--border-radius);
    text-align: center;
    font-weight: 500;
    box-shadow: var(--shadow-light);
    transition: var(--transition);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.tech-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: var(--modal-bg);
    backdrop-filter: blur(10px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.modal-content {
    background: var(--background);
    margin: 5% auto;
    padding: 40px;
    border-radius: var(--border-radius-large);
    width: 90%;
    max-width: 600px;
    position: relative;
    animation: modalSlideIn 0.3s ease-out;
    box-shadow: var(--shadow-heavy);
    border: 1px solid var(--border-color);
}

.close-btn {
    position: absolute;
    right: 20px;
    top: 20px;
    font-size: 32px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition);
}

.close-btn:hover {
    color: var(--text-primary);
    transform: rotate(90deg);
}

.modal h2 {
    margin-bottom: 12px;
    font-size: 28px;
}

.modal p {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

/* Form Styles */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

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

.form-group label {
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
    font-family: inherit;
}

.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(0, 122, 255, 0.1);
}

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

.submit-btn {
    align-self: flex-start;
    margin-top: 16px;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d30 100%);
    color: white;
    padding: 80px 0 40px;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(0, 122, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(88, 86, 214, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(255, 149, 0, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 50px;
    position: relative;
    z-index: 1;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-logo h3 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 0;
    background: linear-gradient(135deg, #007AFF 0%, #5856D6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-logo p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 16px;
    margin: 0;
    font-weight: 400;
}

.footer-links {
    display: flex;
    gap: 40px;
    align-items: center;
    flex-wrap: wrap;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
    font-size: 16px;
    position: relative;
    padding: 8px 0;
}

.footer-links a:hover {
    color: white;
    transform: translateY(-2px);
}

.footer-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.footer-links a:hover::after {
    width: 100%;
}

.footer-links .get-started-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    font-weight: 500;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}

.footer-links .get-started-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    position: relative;
    z-index: 1;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    margin: 0;
    font-weight: 400;
    letter-spacing: 0.5px;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 72px;
        flex-direction: column;
        background: var(--navbar-bg);
        backdrop-filter: var(--blur-backdrop);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        padding: 20px 0;
        border-bottom: 1px solid var(--border-color);
        z-index: 999;
    }

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

    .nav-toggle {
        display: flex;
    }

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

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

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

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-visual {
        height: 300px;
    }

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

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-details {
        gap: 24px;
    }

    .nav-container {
        position: relative;
    }

    .nav-controls {
        display: flex;
        align-items: center;
        gap: 12px;
    }

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

    .footer-content {
        flex-direction: column;
        gap: 40px;
        text-align: center;
    }

    .footer-logo h3 {
        font-size: 24px;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 24px;
    }

    .footer {
        padding: 60px 0 30px;
    }

    .modal-content {
        margin: 10% auto;
        padding: 30px 20px;
    }

    .stats {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2.5rem;
        line-height: 1.1;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }

    .btn {
        width: 100%;
        max-width: 280px;
        padding: 16px 24px;
        font-size: 16px;
    }

    .service-card {
        padding: 30px 20px;
    }

    .modal-content {
        width: 95%;
        padding: 20px 15px;
        margin: 5% auto;
    }

    .section-title {
        font-size: 2rem;
    }

    .contact-card {
        padding: 30px 20px;
    }

    .contact-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 12px;
    }

    .floating-card {
        padding: 16px;
    }

    .floating-card h3 {
        font-size: 16px;
    }

    .nav-logo h2 {
        font-size: 20px;
    }

    .theme-toggle {
        width: 44px;
        height: 26px;
    }

    .theme-toggle .sun-icon,
    .theme-toggle .moon-icon {
        font-size: 12px;
    }
}

/* Accessibility */
.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;
}

/* Scroll behavior improvements */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}