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

:root {
    --color-bg: #ffffff;
    --color-text: #1d1d1f;
    --color-text-secondary: #6e6e73;
    --color-accent: #000000;
    --color-border: #d2d2d7;
    --color-surface: #f5f5f7;
    --spacing-unit: 8px;
    --max-width: 1200px;
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 calc(var(--spacing-unit) * 3);
}

/* Navigation - Fancy Glassmorphism */
.nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 250, 252, 0.9) 100%);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: var(--transition);
}

.nav.scrolled {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 0.95) 100%);
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.08);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    letter-spacing: -0.5px;
    animation: gradientShift 3s ease infinite;
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.05);
    animation: gradientShift 1s ease infinite;
}

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

.nav-links {
    display: flex;
    gap: calc(var(--spacing-unit) * 1);
    align-items: center;
}

.nav-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding: 10px 16px;
    border-radius: 8px;
    position: relative;
    transition: var(--transition);
    overflow: hidden;
}

.nav-links a::before {
    content: '';
    position: absolute;
    bottom: 6px;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    transition: all 0.3s ease;
    transform: translateX(-50%);
    border-radius: 2px;
}

.nav-links a:hover {
    color: var(--color-text);
    background: rgba(102, 126, 234, 0.08);
}

.nav-links a:hover::before {
    width: 60%;
}

.nav-links a.active {
    color: #667eea;
    background: rgba(102, 126, 234, 0.1);
}

.nav-links a.active::before {
    width: 60%;
}

.nav-cta {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white !important;
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
    position: relative;
    overflow: hidden;
}

.nav-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5);
    background: rgba(102, 126, 234, 0.08) !important;
    -webkit-text-fill-color: #667eea;
}

.nav-cta:hover::before {
    left: 100%;
}

/* Mobile Menu Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: var(--transition);
}

.nav-toggle:hover {
    background: rgba(102, 126, 234, 0.1);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.nav-toggle span:nth-child(1) {
    margin-bottom: 6px;
}

.nav-toggle span:nth-child(3) {
    margin-top: 6px;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(-10px);
}

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

/* Mobile Styles */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(248, 250, 252, 0.95) 100%);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 24px;
        gap: 8px;
        border-bottom: 1px solid rgba(102, 126, 234, 0.1);
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
        transform: translateY(-120%);
        opacity: 0;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        pointer-events: none;
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav-links a {
        width: 100%;
        text-align: center;
        padding: 16px;
        font-size: 16px;
        border-radius: 12px;
    }

    .nav-links a:hover {
        background: rgba(102, 126, 234, 0.1);
    }

    .nav-cta {
        width: 100%;
        text-align: center;
        margin-top: 8px;
    }
}

/* Hero Section */
.hero {
    padding-top: 180px;
    padding-bottom: 120px;
    min-height: 85vh;
    display: flex;
    align-items: center;
}

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

.hero-title {
    font-size: clamp(40px, 6vw, 72px);
    font-weight: 700;
    letter-spacing: -2px;
    line-height: 1.1;
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.hero-subtitle {
    font-size: clamp(18px, 2.5vw, 24px);
    color: var(--color-text-secondary);
    line-height: 1.5;
    margin-bottom: calc(var(--spacing-unit) * 5);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 4);
    border-radius: calc(var(--border-radius) / 2);
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text);
    border: 1.5px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-accent);
    background-color: var(--color-surface);
}

/* Services Section */
.services {
    padding: calc(var(--spacing-unit) * 15) 0;
    background-color: var(--color-surface);
}

.section-title {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 700;
    letter-spacing: -1px;
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 8);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
}

.service-card {
    background-color: var(--color-bg);
    padding: calc(var(--spacing-unit) * 5);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
    border-color: var(--color-accent);
}

.service-icon {
    font-size: 40px;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.service-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: calc(var(--spacing-unit) * 2);
    letter-spacing: -0.5px;
}

.service-card p {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Process Section */
.process {
    padding: calc(var(--spacing-unit) * 15) 0;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: calc(var(--spacing-unit) * 6);
}

.step {
    text-align: center;
}

.step-number {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: calc(var(--spacing-unit) * 2);
    letter-spacing: 2px;
}

.step h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: calc(var(--spacing-unit) * 2);
    letter-spacing: -0.5px;
}

.step p {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Social Proof */
.proof {
    padding: calc(var(--spacing-unit) * 12) 0;
    background-color: var(--color-accent);
    color: white;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: calc(var(--spacing-unit) * 6);
    text-align: center;
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.stat-label {
    font-size: 16px;
    opacity: 0.9;
}

/* Contact Section */
.contact {
    padding: calc(var(--spacing-unit) * 15) 0;
    background-color: var(--color-surface);
}

.contact-content {
    max-width: 700px;
    margin: 0 auto;
}

.contact-text {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 6);
}

.contact-text h2 {
    font-size: clamp(32px, 4vw, 42px);
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.contact-text p {
    font-size: 18px;
    color: var(--color-text-secondary);
}

.contact-form {
    background-color: var(--color-bg);
    padding: calc(var(--spacing-unit) * 5);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.form-group {
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: calc(var(--spacing-unit) * 2);
    border: 1.5px solid var(--color-border);
    border-radius: calc(var(--border-radius) / 2);
    font-size: 16px;
    font-family: inherit;
    transition: var(--transition);
    background-color: var(--color-bg);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.05);
}

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

.form-status {
    margin-top: calc(var(--spacing-unit) * 2);
    padding: calc(var(--spacing-unit) * 2);
    border-radius: calc(var(--border-radius) / 2);
    text-align: center;
    display: none;
}

.form-status.success {
    background-color: #d4edda;
    color: #155724;
    display: block;
}

.form-status.error {
    background-color: #f8d7da;
    color: #721c24;
    display: block;
}

/* Footer */
.footer {
    padding: calc(var(--spacing-unit) * 8) 0 calc(var(--spacing-unit) * 4) 0;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: calc(var(--spacing-unit) * 4);
    flex-wrap: wrap;
    gap: calc(var(--spacing-unit) * 4);
}

.footer-brand p {
    color: var(--color-text-secondary);
    margin-top: calc(var(--spacing-unit) * 1);
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--color-text);
}

.footer-bottom {
    padding-top: calc(var(--spacing-unit) * 4);
    border-top: 1px solid var(--color-border);
    text-align: center;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        gap: calc(var(--spacing-unit) * 2);
    }
    
    .nav-links a {
        font-size: 13px;
    }
    
    .hero {
        padding-top: 140px;
        padding-bottom: 80px;
    }
    
    .services,
    .process,
    .contact {
        padding: calc(var(--spacing-unit) * 10) 0;
    }
    
    .services-grid,
    .process-steps {
        gap: calc(var(--spacing-unit) * 3);
    }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

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

.hero-content,
.service-card,
.step {
    animation: fadeInUp 0.6s ease-out;
}

/* Testimonials Section */
.testimonials {
    padding: 100px 0;
    background: linear-gradient(180deg, #0a0a0f 0%, #12121a 100%);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.testimonial-card {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px;
    padding: 35px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(100, 255, 218, 0.1);
    border-color: rgba(100, 255, 218, 0.2);
}

.testimonial-content p {
    font-size: 1.1rem;
    line-height: 1.7;
    color: #ccd6f6;
    font-style: italic;
    margin-bottom: 25px;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, #64ffda, #00bcd4);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: #0a0a0f;
    font-size: 1rem;
}

.author-name {
    font-weight: 600;
    color: #fff;
    font-size: 1rem;
}

.author-role {
    color: #8892b0;
    font-size: 0.9rem;
}

.testimonial-stats {
    padding-top: 15px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.stat-highlight {
    display: inline-block;
    background: rgba(100, 255, 218, 0.1);
    color: #64ffda;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* Trust Section */
.trust-section {
    padding: 60px 0;
    background: rgba(255,255,255,0.02);
    border-top: 1px solid rgba(255,255,255,0.05);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.trust-badges {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 40px;
}

.trust-badge {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #8892b0;
    font-size: 0.95rem;
}

.badge-icon {
    font-size: 1.2rem;
}

.client-logos {
    text-align: center;
}

.logos-label {
    color: #8892b0;
    font-size: 0.9rem;
    margin-bottom: 25px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.logos-row {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 40px;
}

.logo-item {
    color: #4a4a6a;
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: 1px;
    opacity: 0.6;
    transition: opacity 0.3s;
}

.logo-item:hover {
    opacity: 1;
    color: #8892b0;
}

/* Chat Typing Indicator */
.typing-indicator p {
    display: inline-flex;
    gap: 4px;
}

.typing-indicator p::after {
    content: '...';
    animation: typing 1s infinite;
}

@keyframes typing {
    0%, 20% { content: '.'; }
    40% { content: '..'; }
    60%, 100% { content: '...'; }
}