/* ==========================================================================
   FK Enterprise - Premium Modern Stylesheet
   Color Palette: Blue (#0284c7, #0f172a), White (#ffffff), Green (#10b981)
   ========================================================================== */

/* --- CSS Variables --- */
:root {
    --primary-blue: #0284c7;
    --primary-dark: #0f172a;
    --navy-blue: #1e3a8a;
    --accent-green: #10b981;
    --accent-green-hover: #059669;
    --text-dark: #334155;
    --text-muted: #64748b;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
    
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --transition: all 0.3s ease-in-out;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --border-radius: 12px;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

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

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

ul {
    list-style: none;
}

/* --- Layout Utility Classes --- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.container-narrow {
    max-width: 800px;
}

.section {
    padding: 5rem 0;
}

.grid {
    display: grid;
    gap: 2rem;
}

.grid-2 { grid-template-columns: repeat(1, 1fr); }
.grid-3 { grid-template-columns: repeat(1, 1fr); }
.grid-4 { grid-template-columns: repeat(1, 1fr); }

@media (min-width: 768px) {
    .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
    .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* --- Typography & Badges --- */
.text-center { text-align: center; }
.text-white { color: #ffffff !important; }
.text-light { color: #e2e8f0 !important; }
.text-lead { font-size: 1.15rem; font-weight: 500; color: var(--navy-blue); margin-bottom: 1rem; }
.text-muted { color: var(--text-muted); }

.section-subtitle {
    display: inline-block;
    color: var(--primary-blue);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 1.5px;
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 1rem;
    line-height: 1.3;
}

.section-desc {
    color: var(--text-muted);
    max-width: 650px;
    margin: 0 auto 3rem auto;
}

.badge {
    display: inline-block;
    padding: 0.35rem 1rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.badge-accent {
    background-color: rgba(16, 185, 129, 0.15);
    color: var(--accent-green);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
}

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

.btn-primary:hover {
    background-color: var(--accent-green-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-outline:hover {
    background-color: #ffffff;
    color: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

/* --- Navigation Header --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
    padding: 1rem 0;
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
    padding: 0.75rem 0;
}

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

.brand-logo {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

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

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

.mobile-toggle {
    display: block;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--primary-dark);
    cursor: pointer;
}

.nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: var(--bg-white);
    padding: 2rem;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

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

.nav-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.nav-link {
    font-weight: 500;
    color: var(--text-dark);
}

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

@media (min-width: 992px) {
    .mobile-toggle { display: none; }
    
    .nav-menu {
        position: static;
        height: auto;
        width: auto;
        padding: 0;
        box-shadow: none;
        background: transparent;
    }
    
    .nav-list {
        flex-direction: row;
        align-items: center;
        gap: 2rem;
    }

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

/* --- Section 1: Hero --- */
.hero-section {
    position: relative;
    padding: 9rem 0 6rem 0;
    background: url('https://images.unsplash.com/photo-1584622650111-993a426fbf0a?auto=format&fit=crop&w=1800&q=80') center/cover no-repeat;
    color: #ffffff;
    min-height: 85vh;
    display: flex;
    align-items: center;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.9) 0%, rgba(2, 132, 199, 0.8) 100%);
}

.hero-container {
    position: relative;
    z-index: 2;
}

.hero-content {
    max-width: 750px;
}

.hero-title {
    font-size: 2.75rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.25rem;
}

.hero-description {
    font-size: 1.15rem;
    color: #e2e8f0;
    margin-bottom: 2rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

/* --- Section 2: About --- */
.about-image-wrapper {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-experience-badge {
    position: absolute;
    bottom: 20px;
    right: 20px;
    background-color: var(--primary-blue);
    color: #ffffff;
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.exp-number {
    display: block;
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1;
}

.exp-text {
    font-size: 0.85rem;
}

.about-highlights {
    margin-top: 2rem;
}

.highlight-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.highlight-icon {
    font-size: 1.5rem;
    color: var(--accent-green);
    background-color: rgba(16, 185, 129, 0.1);
    padding: 0.75rem;
    border-radius: 8px;
}

/* --- Cards General --- */
.card {
    background-color: var(--bg-white);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* --- Section 3: Products --- */
.bg-light {
    background-color: var(--bg-light);
}

.product-card .card-img-container {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.product-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.product-card:hover img {
    transform: scale(1.05);
}

.card-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    background-color: var(--accent-green);
    color: #ffffff;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 4px;
}

.card-body {
    padding: 1.5rem;
}

.card-icon {
    font-size: 1.5rem;
    color: var(--primary-blue);
    margin-bottom: 0.75rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--primary-dark);
}

.card-text {
    color: var(--text-muted);
    font-size: 0.925rem;
    margin-bottom: 1.25rem;
}

.card-link {
    font-weight: 600;
    color: var(--primary-blue);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}

.card-link:hover {
    color: var(--navy-blue);
}

/* --- Section 4: Services --- */
.service-card {
    padding: 2.5rem 1.5rem;
    text-align: center;
}

.service-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1.5rem auto;
    background-color: rgba(2, 132, 199, 0.1);
    color: var(--primary-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
}

/* --- Section 5: Why Choose Us --- */
.bg-gradient {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--navy-blue) 100%);
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 2rem 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    backdrop-filter: blur(5px);
    transition: var(--transition);
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 2.2rem;
    color: var(--accent-green);
    margin-bottom: 1rem;
}

.feature-card h4 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
}

.feature-card p {
    font-size: 0.875rem;
    color: #cbd5e1;
}

/* --- Section 6: Industries --- */
.industry-card {
    background-color: var(--bg-white);
    padding: 2rem 1.5rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    text-align: center;
}

.industry-icon {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

/* --- Section 7: Testimonials --- */
.testimonial-card {
    padding: 2rem;
}

.stars {
    color: #f59e0b;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.testimonial-text {
    font-style: italic;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.client-info strong {
    display: block;
    color: var(--primary-dark);
}

.client-info span {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* --- Section 8: FAQ Accordion --- */
.faq-accordion {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background-color: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 1.25rem 1.5rem;
    background: none;
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--primary-dark);
    cursor: pointer;
    text-align: left;
}

.faq-icon {
    color: var(--primary-blue);
    transition: var(--transition);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    padding: 0 1.5rem;
    background-color: #fafafa;
}

.faq-answer p {
    padding-bottom: 1.25rem;
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* --- Section 9 & 10: Contact & Map --- */
.contact-card {
    padding: 2.5rem;
}

.contact-card h3 {
    margin-bottom: 1.5rem;
    color: var(--primary-dark);
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.4rem;
    font-size: 0.9rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

.error-msg {
    display: none;
    color: #ef4444;
    font-size: 0.8rem;
    margin-top: 0.25rem;
}

.form-group.error .error-msg {
    display: block;
}

.form-group.error .form-control {
    border-color: #ef4444;
}

.form-status {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: 6px;
    font-size: 0.9rem;
    display: none;
}

.form-status.success {
    display: block;
    background-color: #d1fae5;
    color: #065f46;
}

.contact-info-wrapper {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-details-card {
    padding: 2rem;
}

.contact-details-card h3 {
    margin-bottom: 1.25rem;
}

.contact-info-list li {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.25rem;
    align-items: flex-start;
}

.contact-info-list i {
    font-size: 1.25rem;
    color: var(--primary-blue);
    background-color: rgba(2, 132, 199, 0.1);
    padding: 0.75rem;
    border-radius: 50%;
}

.map-container {
    padding: 0.5rem;
}

.map-container iframe {
    border-radius: 8px;
}

/* --- Section 11: Footer --- */
.site-footer {
    background-color: var(--primary-dark);
    color: #94a3b8;
    padding-top: 4rem;
}

.footer-top {
    padding-bottom: 3rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    display: inline-block;
    margin-bottom: 1rem;
}

.footer-about {
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.social-links {
    display: flex;
    gap: 0.75rem;
}

.social-links a {
    width: 36px;
    height: 36px;
    background-color: rgba(255, 255, 255, 0.1);
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

.social-links a:hover {
    background-color: var(--accent-green);
}

.footer-title {
    color: #ffffff;
    font-size: 1.1rem;
    margin-bottom: 1.25rem;
}

.footer-links li {
    margin-bottom: 0.6rem;
}

.footer-links a {
    font-size: 0.9rem;
}

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

.footer-time {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.footer-bottom {
    padding: 1.5rem 0;
}

.footer-bottom-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
}

.footer-legal {
    display: flex;
    gap: 1.5rem;
}

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

@media (min-width: 768px) {
    .footer-bottom-content {
        flex-direction: row;
    }
}

/* --- Back to Top Button --- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 45px;
    height: 45px;
    background-color: var(--primary-blue);
    color: #ffffff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--navy-blue);
    transform: translateY(-3px);
}