/* ===== CSS Variables ===== */
:root {
    --color-primary: #0a2540;
    --color-primary-light: #1a3a5c;
    --color-secondary: #0066cc;
    --color-accent: #00a3ff;
    --color-text: #1a1a2e;
    --color-text-light: #6b7280;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-border: #e5e7eb;
    --color-success: #10b981;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 5rem;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    height: auto;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

ul {
    list-style: none;
}

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

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

.btn-primary:hover {
    background-color: #0052a3;
    border-color: #0052a3;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background-color: var(--color-primary-light);
    border-color: var(--color-primary-light);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: white;
    border-color: white;
}

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

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.05rem;
}

.btn-full {
    width: 100%;
}

.btn-nav {
    padding: 0.5rem 1.25rem;
    font-size: 0.9rem;
}

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--color-primary);
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
    color: white;
    font-weight: 700;
    border-radius: var(--radius-md);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-menu a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text);
}

.nav-menu a:hover {
    color: var(--color-secondary);
}

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

.nav-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--color-primary);
    transition: var(--transition);
}

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--color-primary) 0%, #0d3a5c 50%, #0a2540 100%);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(0, 163, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 102, 204, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 40% 80%, rgba(0, 163, 255, 0.05) 0%, transparent 40%);
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-content {
    position: relative;
    max-width: 800px;
    color: white;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
}

.hero-title .highlight {
    background: linear-gradient(135deg, var(--color-accent), #00d4ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.7;
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
    max-width: 650px;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: white;
    opacity: 0.6;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.scroll-indicator {
    width: 24px;
    height: 40px;
    border: 2px solid currentColor;
    border-radius: 12px;
    position: relative;
}

.scroll-indicator::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: currentColor;
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
    50% { opacity: 0.5; transform: translateX(-50%) translateY(12px); }
}

/* ===== Section Styles ===== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Services Section ===== */
.services {
    padding: var(--spacing-2xl) 0;
    background-color: var(--color-bg-alt);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    position: relative;
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

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

.service-card.featured {
    border: 2px solid var(--color-secondary);
}

.service-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-secondary);
    color: white;
    padding: 0.35rem 1rem;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 20px;
}

.service-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.service-icon svg {
    width: 28px;
    height: 28px;
    color: white;
}

.service-price {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.service-title {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.service-description {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.service-features {
    margin-bottom: var(--spacing-lg);
}

.service-features li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--color-text);
    font-size: 0.95rem;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 600;
}

/* ===== Assessment Section ===== */
.assessment {
    padding: var(--spacing-2xl) 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, #0d3a5c 100%);
    color: white;
}

.assessment-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.assessment-text .section-title {
    color: white;
}

.assessment-text p {
    opacity: 0.9;
    margin-bottom: var(--spacing-lg);
    font-size: 1.1rem;
    line-height: 1.7;
}

.assessment-visual {
    display: flex;
    justify-content: center;
}

.assessment-graphic {
    position: relative;
    width: 300px;
    height: 300px;
}

.graphic-circle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
}

.graphic-circle::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-accent));
    border-radius: 50%;
    opacity: 0.3;
}

.graphic-lines span {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 150px;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform-origin: left center;
}

.graphic-lines span:nth-child(1) { transform: rotate(0deg); }
.graphic-lines span:nth-child(2) { transform: rotate(90deg); }
.graphic-lines span:nth-child(3) { transform: rotate(45deg); }
.graphic-lines span:nth-child(4) { transform: rotate(-45deg); }

.graphic-dots span {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--color-accent);
    border-radius: 50%;
    box-shadow: 0 0 20px var(--color-accent);
}

.graphic-dots span:nth-child(1) { top: 20%; left: 50%; transform: translateX(-50%); }
.graphic-dots span:nth-child(2) { bottom: 30%; left: 20%; }
.graphic-dots span:nth-child(3) { bottom: 30%; right: 20%; }

/* ===== About Section ===== */
.about {
    padding: var(--spacing-2xl) 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.about-img-wrapper {
    position: relative;
    height: 400px;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.about-img-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-primary));
}

.about-img-content {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-badge {
    background: white;
    color: var(--color-primary);
    padding: 1rem 2rem;
    font-size: 1.5rem;
    font-weight: 700;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.about-text {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    font-size: 1.05rem;
    line-height: 1.7;
}

.about-stats {
    display: flex;
    gap: var(--spacing-xl);
    margin: var(--spacing-xl) 0;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-secondary);
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-top: 0.5rem;
    display: block;
}

/* ===== Clients Section ===== */
.clients {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg-alt);
    text-align: center;
}

.clients-label {
    color: var(--color-text-light);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-md);
}

.clients-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.client-tag {
    background: white;
    color: var(--color-primary);
    padding: 0.5rem 1.25rem;
    font-weight: 500;
    border-radius: 50px;
    box-shadow: var(--shadow-sm);
}

/* ===== Contact Section ===== */
.contact {
    padding: var(--spacing-2xl) 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--spacing-2xl);
}

.contact-description {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
    font-size: 1.05rem;
}

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

.contact-item {
    display: flex;
    gap: var(--spacing-md);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--color-bg-alt);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-secondary);
}

.contact-item h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 0.25rem;
}

.contact-item p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

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

.contact-item a:hover {
    text-decoration: underline;
}

/* ===== Contact Form ===== */
.contact-form-wrapper {
    position: relative;
}

.contact-form {
    background: var(--color-bg-alt);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    font-family: inherit;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    background: white;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

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

.form-success {
    position: absolute;
    inset: 0;
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-xl);
}

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

.success-icon {
    width: 80px;
    height: 80px;
    background: var(--color-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.success-icon svg {
    width: 40px;
    height: 40px;
    color: white;
}

.form-success h3 {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.form-success p {
    color: var(--color-text-light);
}

/* ===== Footer ===== */
.footer {
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand .logo {
    margin-bottom: var(--spacing-md);
    color: white;
}

.footer-brand .logo-icon {
    background: rgba(255, 255, 255, 0.2);
}

.footer-brand p {
    opacity: 0.7;
    font-size: 0.95rem;
    line-height: 1.6;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-links a {
    opacity: 0.7;
    font-size: 0.95rem;
}

.footer-links a:hover {
    opacity: 1;
}

.footer-contact p {
    opacity: 0.7;
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.footer-contact a {
    color: var(--color-accent);
}

.footer-contact a:hover {
    text-decoration: underline;
}

.footer-bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    opacity: 0.5;
    font-size: 0.9rem;
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .assessment-content,
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .assessment-visual {
        order: -1;
    }

    .about-img-wrapper {
        height: 300px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-lg);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle {
        display: flex;
    }

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

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

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero {
        padding-top: 100px;
    }

    .hero-scroll {
        display: none;
    }

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

    .hero-cta .btn {
        width: 100%;
    }

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

    .about-stats {
        flex-wrap: wrap;
        gap: var(--spacing-lg);
    }

    .stat {
        flex: 1;
        min-width: 100px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
}

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

    .service-card {
        padding: var(--spacing-lg);
    }

    .contact-form {
        padding: var(--spacing-lg);
    }

    .assessment-graphic {
        width: 250px;
        height: 250px;
    }
}

/* ===== Page Styles (About, FAQ) ===== */
.page-header {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, var(--color-primary) 0%, #0d3a5c 100%);
    color: white;
    text-align: center;
}

.page-header .section-title {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.page-header p {
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.page-content {
    padding: var(--spacing-2xl) 0;
}

.page-content h2 {
    font-size: 1.75rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.page-content h2:first-child {
    margin-top: 0;
}

.page-content p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.page-content ul {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.page-content li {
    color: var(--color-text-light);
    margin-bottom: 0.5rem;
    line-height: 1.7;
    list-style: disc;
}

/* FAQ Accordion */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-primary);
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--color-secondary);
}

.faq-icon {
    width: 24px;
    height: 24px;
    position: relative;
    flex-shrink: 0;
}

.faq-icon::before,
.faq-icon::after {
    content: '';
    position: absolute;
    background: currentColor;
    transition: var(--transition);
}

.faq-icon::before {
    width: 100%;
    height: 2px;
    top: 50%;
    transform: translateY(-50%);
}

.faq-icon::after {
    width: 2px;
    height: 100%;
    left: 50%;
    transform: translateX(-50%);
}

.faq-item.active .faq-icon::after {
    transform: translateX(-50%) rotate(90deg);
    opacity: 0;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding-bottom: var(--spacing-md);
}