/* ===== CSS Variables & Reset ===== */
:root {
    --primary: #1a365d;
    --primary-light: #2a5298;
    --primary-dark: #0f2440;
    --accent: #3182ce;
    --accent-light: #63b3ed;
    --text: #1a202c;
    --text-light: #4a5568;
    --text-muted: #718096;
    --bg: #ffffff;
    --bg-light: #f7fafc;
    --bg-alt: #edf2f7;
    --border: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px -10px rgba(0, 0, 0, 0.15);
    --radius: 8px;
    --radius-lg: 12px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

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

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

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

ul {
    list-style: none;
}

/* ===== Container ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 6px;
}

.logo-sfg {
    color: var(--primary);
}

.logo-sales {
    color: var(--accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links li a {
    color: var(--text-light);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 8px 16px;
    border-radius: var(--radius);
    transition: var(--transition);
}

.nav-links li a:hover {
    color: var(--primary);
    background: var(--bg-alt);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: var(--transition);
}

.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 Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 40%, var(--primary-light) 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(49, 130, 206, 0.3) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 20%, rgba(99, 179, 237, 0.2) 0%, transparent 50%),
        radial-gradient(ellipse at 60% 80%, rgba(26, 54, 93, 0.4) 0%, transparent 50%);
}

.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding-top: 72px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    color: #ffffff;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.03em;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.7;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background: #ffffff;
    color: var(--primary);
}

.btn-primary:hover {
    background: var(--bg-light);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.btn-outline {
    background: transparent;
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.8);
    color: #ffffff;
    transform: translateY(-2px);
}

/* ===== Sections ===== */
.section {
    padding: 100px 0;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--primary);
    text-align: center;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.section-title.text-left {
    text-align: left;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
    line-height: 1.7;
}

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

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--bg);
    padding: 36px 28px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
}

.service-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-light);
}

.service-icon {
    width: 48px;
    height: 48px;
    color: var(--accent);
    margin-bottom: 20px;
}

.service-icon svg {
    width: 100%;
    height: 100%;
}

.service-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===== About ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.about-content p {
    color: var(--text-light);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

.about-content {
    opacity: 0;
    transform: translateX(-20px);
}

.about-content.animate-in {
    opacity: 1;
    transform: translateX(0);
}

.about-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 32px;
}

.highlight {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    color: var(--primary);
    font-size: 0.95rem;
}

.highlight-icon {
    width: 22px;
    height: 22px;
    color: var(--accent);
    flex-shrink: 0;
}

.highlight-icon svg {
    width: 100%;
    height: 100%;
}

.about-card {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-lg);
    padding: 48px 36px;
    color: #ffffff;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    transform: translateX(20px);
}

.about-card.animate-in {
    opacity: 1;
    transform: translateX(0);
}

.about-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.about-card p {
    font-size: 1.05rem;
    line-height: 1.8;
    opacity: 0.9;
}

/* ===== Industries ===== */
.industries {
    background: var(--bg-light);
}

.industries-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    max-width: 900px;
    margin: 0 auto;
}

.industry-tag {
    background: var(--bg);
    color: var(--primary);
    padding: 12px 24px;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 500;
    border: 1px solid var(--border);
    transition: var(--transition);
    opacity: 0;
    transform: scale(0.9);
}

.industry-tag.animate-in {
    opacity: 1;
    transform: scale(1);
}

.industry-tag:hover {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    transform: scale(1.05);
}

/* ===== Contact ===== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.contact-card {
    text-align: center;
    padding: 36px 24px;
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
}

.contact-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

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

.contact-icon {
    width: 40px;
    height: 40px;
    color: var(--accent);
    margin: 0 auto 16px;
}

.contact-icon svg {
    width: 100%;
    height: 100%;
}

.contact-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
}

.contact-card p {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.7;
}

.contact-card a {
    color: var(--accent);
    font-weight: 500;
}

.contact-card a:hover {
    color: var(--primary);
}

/* ===== Footer ===== */
.footer {
    background: var(--primary-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand p {
    margin-top: 16px;
    font-size: 0.95rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.6);
}

.footer-brand .logo {
    font-size: 1.3rem;
}

.footer-links h4,
.footer-contact h4 {
    color: #ffffff;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: #ffffff;
}

.footer-contact p {
    font-size: 0.9rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.6);
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.6);
}

.footer-contact a:hover {
    color: #ffffff;
}

.footer-bottom {
    text-align: center;
    padding: 24px 0;
    margin-top: 0;
}

.footer-bottom p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
}

/* ===== Legal Pages (Privacy & Terms) ===== */
.legal-page {
    padding-top: 120px;
    padding-bottom: 80px;
    min-height: calc(100vh - 200px);
}

.legal-content {
    max-width: 800px;
    margin: 0 auto;
}

.legal-content h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.legal-content .last-updated {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 40px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

.legal-content h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary);
    margin-top: 40px;
    margin-bottom: 16px;
}

.legal-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text);
    margin-top: 24px;
    margin-bottom: 12px;
}

.legal-content p {
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 16px;
}

.legal-content ul,
.legal-content ol {
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 16px;
    padding-left: 24px;
}

.legal-content ul {
    list-style: disc;
}

.legal-content ol {
    list-style: decimal;
}

.legal-content li {
    margin-bottom: 8px;
}

.legal-content a {
    color: var(--accent);
}

.legal-content a:hover {
    text-decoration: underline;
}

.legal-content strong {
    color: var(--text);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

    .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 20px 24px;
        gap: 4px;
        border-bottom: 1px solid var(--border);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: var(--transition);
    }

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

    .nav-links li a {
        display: block;
        padding: 12px 16px;
        width: 100%;
    }

    .hero h1 {
        font-size: 2.25rem;
    }

    .hero-subtitle {
        font-size: 1.05rem;
    }

    .section {
        padding: 70px 0;
    }

    .section-title {
        font-size: 1.85rem;
    }

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

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .about-highlights {
        grid-template-columns: 1fr;
    }

    .legal-content h1 {
        font-size: 1.85rem;
    }

    .legal-page {
        padding-top: 100px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.85rem;
    }

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

    .btn {
        width: 100%;
        max-width: 280px;
    }
}

/* ===== Animation Keyframes ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.service-card,
.contact-card,
.industry-tag,
.about-content,
.about-card {
    transition: opacity 0.6s ease, transform 0.6s ease, box-shadow 0.3s ease, border-color 0.3s ease, background 0.3s ease, color 0.3s ease;
}