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

:root {
    /* Color Palette - Professional Blue & Cyan */
    --primary-color: #0369a1;
    --primary-dark: #075985;
    --primary-light: #0ea5e9;
    --secondary-color: #06b6d4;
    --accent-color: #22d3ee;
    --success-color: #10b981;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0369a1 0%, #06b6d4 100%);
    --gradient-accent: linear-gradient(135deg, #06b6d4 0%, #22d3ee 100%);
    --gradient-dark: linear-gradient(135deg, #1e3a8a 0%, #075985 100%);

    /* Neutral Colors */
    --bg-primary: #0f0f1e;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #252541;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;

    /* Typography */
    --font-primary: 'Poppins', sans-serif;
    --font-accent: 'Space Grotesk', sans-serif;

    /* Spacing */
    --container-width: 1200px;
    --section-padding: 120px 0;

    /* Effects */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 20px rgba(3, 105, 161, 0.4);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
}

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

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

.gradient-text {
    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;
    z-index: 1000;
    padding: 20px 0;
    transition: all var(--transition-medium);
    background: rgba(15, 15, 30, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar.scrolled {
    padding: 15px 0;
    background: rgba(15, 15, 30, 0.95);
    box-shadow: var(--shadow-md);
}

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

.logo {
    font-size: 28px;
    font-weight: 800;
    font-family: var(--font-accent);
}

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

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
    align-items: center;
}

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

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

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

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

.btn-primary-nav {
    background: var(--gradient-primary);
    padding: 10px 24px;
    border-radius: 8px;
    color: var(--text-primary) !important;
}

.btn-primary-nav::after {
    display: none;
}

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

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 5px;
}

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

/* Language Selector */
.language-selector {
    display: flex;
    align-items: center;
    gap: 8px;
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    padding: 6px 10px;
    border-radius: 6px;
    transition: all var(--transition-fast);
    font-family: var(--font-primary);
}

.lang-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.lang-btn.active {
    color: var(--text-primary);
    background: var(--gradient-primary);
    box-shadow: 0 2px 8px rgba(3, 105, 161, 0.3);
}

.lang-separator {
    color: var(--text-muted);
    font-weight: 300;
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    overflow: hidden;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: var(--primary-color);
    top: -250px;
    left: -250px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--secondary-color);
    bottom: -200px;
    right: -200px;
    animation-delay: 5s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: var(--accent-color);
    top: 50%;
    right: 10%;
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(50px, -50px) scale(1.1);
    }
    66% {
        transform: translate(-50px, 50px) scale(0.9);
    }
}

.hero-container {
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 800px;
    text-align: center;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(3, 105, 161, 0.1);
    border: 1px solid rgba(3, 105, 161, 0.3);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 14px;
    color: var(--primary-light);
    margin-bottom: 30px;
    animation: fadeInUp 0.8s ease;
}

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

.hero-title {
    font-size: clamp(48px, 8vw, 80px);
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.1;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-subtitle {
    font-size: clamp(18px, 2.5vw, 22px);
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
    animation: fadeInUp 0.8s ease 0.6s both;
}

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

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.8s both;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 36px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: var(--font-accent);
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 5px;
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 2px;
    animation: fadeIn 1s ease 1s both;
}

.scroll-arrow {
    width: 20px;
    height: 30px;
    border: 2px solid var(--text-muted);
    border-radius: 15px;
    position: relative;
}

.scroll-arrow::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--text-muted);
    border-radius: 2px;
    animation: scrollDown 2s infinite;
}

@keyframes scrollDown {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
        opacity: 1;
    }
    100% {
        transform: translateX(-50%) translateY(12px);
        opacity: 0;
    }
}

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

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-medium);
    border: none;
    cursor: pointer;
    font-family: var(--font-primary);
    font-size: 16px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-primary);
    box-shadow: 0 4px 15px rgba(3, 105, 161, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(3, 105, 161, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.4);
}

/* ===================================
   Section Styles
   =================================== */
section {
    padding: var(--section-padding);
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--primary-light);
    margin-bottom: 15px;
}

.section-title {
    font-size: clamp(36px, 5vw, 56px);
    margin-bottom: 20px;
}

.section-description {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

/* ===================================
   About Section
   =================================== */
.about {
    background: var(--bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about-text h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: var(--primary-light);
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 17px;
    line-height: 1.8;
}

.about-highlights {
    margin-top: 40px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.highlight-item {
    display: flex;
    gap: 20px;
    align-items: start;
    padding: 20px;
    background: rgba(3, 105, 161, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(3, 105, 161, 0.1);
    transition: all var(--transition-medium);
}

.highlight-item:hover {
    background: rgba(3, 105, 161, 0.1);
    border-color: rgba(3, 105, 161, 0.3);
    transform: translateX(5px);
}

.highlight-icon {
    font-size: 32px;
    line-height: 1;
}

.highlight-text h4 {
    font-size: 18px;
    margin-bottom: 5px;
}

.highlight-text p {
    font-size: 15px;
    color: var(--text-muted);
    margin: 0;
}

.about-visual {
    position: sticky;
    top: 100px;
}

.tech-stack {
    background: var(--bg-tertiary);
    padding: 40px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.tech-category {
    margin-bottom: 30px;
}

.tech-category:last-child {
    margin-bottom: 0;
}

.tech-category h4 {
    font-size: 16px;
    color: var(--text-muted);
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tech-tag {
    background: rgba(3, 105, 161, 0.1);
    color: var(--primary-light);
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid rgba(3, 105, 161, 0.2);
    transition: all var(--transition-fast);
}

.tech-tag:hover {
    background: rgba(3, 105, 161, 0.2);
    border-color: rgba(3, 105, 161, 0.4);
    transform: translateY(-2px);
}

/* ===================================
   Services Section
   =================================== */
.services {
    background: var(--bg-primary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--bg-secondary);
    padding: 40px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
}

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

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

.service-card:hover {
    transform: translateY(-5px);
    border-color: rgba(3, 105, 161, 0.3);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.service-icon svg {
    width: 30px;
    height: 30px;
    color: white;
}

.service-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.service-card > p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.7;
}

.service-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.service-features li {
    color: var(--text-secondary);
    padding-left: 25px;
    position: relative;
    font-size: 15px;
}

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

/* ===================================
   Approach Section
   =================================== */
.approach {
    background: var(--bg-secondary);
}

.approach-content {
    margin-bottom: 60px;
}

.approach-main {
    margin-bottom: 40px;
}

.approach-card {
    background: var(--bg-tertiary);
    padding: 35px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-medium);
}

.approach-card.featured {
    background: var(--gradient-primary);
    border: none;
    padding: 45px;
}

.approach-card:hover {
    transform: translateY(-3px);
    border-color: rgba(3, 105, 161, 0.3);
}

.approach-number {
    width: 50px;
    height: 50px;
    background: rgba(3, 105, 161, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 20px;
    font-family: var(--font-accent);
}

.approach-card.featured .approach-number {
    background: rgba(255, 255, 255, 0.2);
    font-size: 32px;
}

.approach-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.approach-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.approach-card.featured p {
    color: rgba(255, 255, 255, 0.9);
}

.approach-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.approach-benefits {
    background: var(--bg-tertiary);
    padding: 50px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.approach-benefits h3 {
    font-size: 28px;
    margin-bottom: 30px;
    text-align: center;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 16px;
    color: var(--text-secondary);
}

.benefit-icon {
    width: 30px;
    height: 30px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-weight: bold;
    font-size: 14px;
}

/* ===================================
   Contact Section
   =================================== */
.contact {
    background: var(--bg-primary);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: start;
}

.contact-info h2 {
    font-size: clamp(32px, 4vw, 48px);
    margin-bottom: 20px;
    margin-top: 15px;
}

.contact-info > p {
    color: var(--text-secondary);
    margin-bottom: 40px;
    font-size: 17px;
    line-height: 1.7;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-detail-item {
    display: flex;
    gap: 20px;
    align-items: start;
}

.detail-icon {
    width: 50px;
    height: 50px;
    background: rgba(3, 105, 161, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.detail-icon svg {
    width: 24px;
    height: 24px;
    color: var(--primary-light);
}

.contact-detail-item h4 {
    font-size: 16px;
    margin-bottom: 5px;
}

.contact-detail-item p {
    color: var(--text-secondary);
    font-size: 15px;
}

.contact-form-wrapper {
    background: var(--bg-secondary);
    padding: 45px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 500;
    font-size: 15px;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    background: var(--bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 14px 16px;
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 15px;
    transition: all var(--transition-fast);
}

.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(3, 105, 161, 0.1);
}

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

.btn-submit {
    width: 100%;
    margin-top: 10px;
    position: relative;
}

.btn-loading {
    display: none;
}

.btn-submit.loading .btn-text {
    display: none;
}

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

.form-message {
    padding: 15px;
    border-radius: 8px;
    font-size: 15px;
    display: none;
}

.form-message.success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--success-color);
    display: block;
}

.form-message.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #f87171;
    display: block;
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--bg-secondary);
    padding: 60px 0 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 20px;
    max-width: 400px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 18px;
    margin-bottom: 20px;
}

.footer-column ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

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

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

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 14px;
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
    }

    .about-visual {
        position: static;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    :root {
        --section-padding: 80px 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: rgba(15, 15, 30, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: flex-start;
        padding: 40px 20px;
        transition: left var(--transition-medium);
        gap: 20px;
    }

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

    .nav-link {
        font-size: 18px;
    }

    .hero {
        min-height: auto;
        padding: 120px 0 60px;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .hero-stats {
        gap: 30px;
    }

    .scroll-indicator {
        display: none;
    }

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

    .approach-steps {
        grid-template-columns: 1fr;
    }

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

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

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

    .contact-form-wrapper {
        padding: 30px 20px;
    }

    .approach-benefits {
        padding: 30px 20px;
    }
}

@media (max-width: 480px) {
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .tech-stack {
        padding: 25px;
    }

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

/* ===================================
   Utility Classes
   =================================== */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }
.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }