/* ==========================================================================
   1. Brand Variable Architecture, Resets & Base Setups
   ========================================================================== */
:root {
    --color-primary-dark: #000000;    /* Exact Black */
    --color-primary-medium: #5a5a5a;  /* Exact Dark Grey */
    --color-accent-blue: #3b56a6;     /* Exact Blue */
    --color-accent-green: #5e873b;    /* Exact Green */
    --color-light-bg: #f8fafc;        /* Soft Alternative Block BG */
    --color-border-mute: #8d8d8d;     /* Exact Light Grey for Borders */
    --color-text-dark: #000000;       /* Exact Black for maximum contrast */
    --color-text-light: #ffffff;
    --color-text-muted: #5a5a5a;      /* Exact Dark Grey for secondary text */
    
    --font-stack: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --header-height: 80px;
    --topbar-height: 40px;
}

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

html {
    scroll-behavior: smooth;
    font-family: var(--font-stack);
    color: var(--color-text-dark);
    line-height: 1.6;
    font-size: 16px;
}

body {
    background-color: #ffffff;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.mb-4 { margin-bottom: 1.5rem; }

.grid {
    display: grid;
    gap: 30px;
}

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

@media (max-width: 767px) {
    .grid { grid-template-columns: 1fr !important; }
}

.section-padding {
    padding: 80px 0;
}
.section-header {
    margin-bottom: 50px;
}
.section-header h2 {
    font-size: 2.25rem;
    color: var(--color-primary-dark);
    margin-bottom: 10px;
    position: relative;
    display: inline-block;
}
.section-header h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--color-accent-green);
    margin: 10px auto 0 auto;
    border-radius: 2px;
}
.section-tagline {
    font-size: 1.15rem;
    color: var(--color-text-muted);
}

h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 6px;
    transition: background-color 0.25s ease, transform 0.1s ease, color 0.25s ease;
    cursor: pointer;
    border: none;
    text-align: center;
}

.btn-sm { padding: 8px 16px; font-size: 0.9rem; }
.btn-md { padding: 12px 24px; font-size: 1rem; }
.btn-lg { padding: 16px 32px; font-size: 1.1rem; }
.btn-block { display: flex; width: 100%; }

.btn-primary {
    background-color: #ffffff;
    color: var(--color-accent-blue);
    border: 1px solid var(--color-border-mute);
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}
.btn-primary:hover, .btn-primary:focus {
    background-color: var(--color-light-bg);
    color: #2e4485;
    border-color: var(--color-primary-medium);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text-light);
    border: 2px solid var(--color-text-light);
}
.btn-secondary:hover, .btn-secondary:focus {
    background-color: rgba(255, 255, 255, 0.15);
}

/* ==========================================================================
   2. Explicit Top Utility Information Bar Architecture
   ========================================================================== */
.top-bar {
    background-color: var(--color-primary-dark);
    color: var(--color-text-light);
    font-size: 0.85rem;
    min-height: var(--topbar-height);
    display: flex;
    align-items: center;
    padding: 5px 0;
    border-bottom: 1px solid var(--color-primary-medium);
}

.top-bar-content {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.top-info-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.top-info-item a {
    color: var(--color-text-light);
    text-decoration: none;
}

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

.top-info-right {
    display: flex;
    gap: 20px;
}

@media (min-width: 768px) {
    .top-bar-content {
        flex-direction: row;
        justify-content: space-between;
    }
}

/* ==========================================================================
   3. Sticky Primary Header & Accessible Adaptive Navigation Layout
   ========================================================================== */
.main-header {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: -webkit-sticky;
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--header-height);
    display: flex;
    align-items: center;
    border-bottom: 1px solid rgba(141, 141, 141, 0.2);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.brand-logo {
    display: block;
    max-height: 55px;
    width: auto;
}

.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-primary-dark);
    cursor: pointer;
    padding: 5px;
}

.nav-menu ul {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 20px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--color-primary-medium);
    font-weight: 600;
    transition: color 0.2s ease;
}

.nav-menu a:hover:not(.btn) {
    color: var(--color-accent-blue);
}

@media (max-width: 991px) {
    .mobile-nav-toggle {
        display: block;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background-color: #ffffff;
        box-shadow: 0 4px 10px rgba(0,0,0,0.1);
        padding: 20px;
        border-bottom: 2px solid var(--color-accent-blue);
    }

    .nav-menu.open {
        display: block;
    }

    .nav-menu ul {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .nav-menu .nav-cta-item {
        width: 100%;
        margin-top: 10px;
    }
    
    .nav-menu .btn {
        display: flex;
        width: 100%;
    }
}

/* ==========================================================================
   4. Hero Section Component System (Fixed Background Layering)
   ========================================================================== */
.hero-section {
    position: relative;
    background-color: var(--color-primary-dark);
    background-image: linear-gradient(135deg, rgba(0, 0, 0, 0.9) 0%, rgba(90, 90, 90, 0.75) 100%), url('https://images.unsplash.com/photo-1564013799919-ab600027ffc6?auto=format&fit=crop&w=1920&q=80'); 
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 100px 0;
    color: var(--color-text-light);
    text-align: center;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 2.2rem;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 1.4rem;
    color: var(--color-text-light);
    opacity: 0.95;
    margin-bottom: 15px;
    font-weight: 400;
}

.hero-tagline {
    font-size: 1.15rem;
    max-width: 700px;
    margin: 0 auto 40px auto;
    opacity: 0.85;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
}

@media (min-width: 768px) {
    .hero-section { padding: 140px 0 140px 0; }
    .hero-title { font-size: 3.2rem; }
    .hero-subtitle { font-size: 1.75rem; }
}

/* ==========================================================================
   5. Features & Vision Layout Systems
   ========================================================================== */
.features-section {
    padding: 50px 0;
    background-color: var(--color-light-bg);
    border-bottom: 1px solid var(--color-border-mute);
}

.feature-card {
    background-color: #ffffff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
    border-top: 4px solid var(--color-accent-blue);
}

.feature-icon {
    font-size: 2rem;
    color: var(--color-accent-blue);
    margin-bottom: 15px;
}

.feature-card h3 {
    margin-bottom: 10px;
    font-size: 1.25rem;
}

.vision-section {
    padding: 60px 0;
    background-color: #ffffff;
}

.vision-box {
    max-width: 850px;
    margin: 0 auto;
    background-color: var(--color-light-bg);
    padding: 40px;
    border-radius: 12px;
    border-left: 6px solid var(--color-accent-green);
}

.vision-box h2 {
    margin-bottom: 15px;
    color: var(--color-primary-dark);
}

.lead {
    font-size: 1.25rem;
    font-weight: 500;
    line-height: 1.7;
}

/* ==========================================================================
   6. Services Layout & Structural Grid Elements
   ========================================================================== */
.services-section {
    background-color: var(--color-light-bg);
}

.service-card {
    background-color: #ffffff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.02);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--color-border-mute);
}

.service-img-placeholder {
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 3.5rem;
}

.pr-mg-bg { background-image: linear-gradient(135deg, #5a5a5a 0%, #000000 100%); }
.pr-sl-bg { background-image: linear-gradient(135deg, #5a5a5a 0%, #3b56a6 100%); }
.pr-ls-bg { background-image: linear-gradient(135deg, #5a5a5a 0%, #5e873b 100%); }

.service-body {
    padding: 30px;
    flex-grow: 1;
}

.service-body h3 {
    font-size: 1.5rem;
    color: var(--color-primary-dark);
    margin-bottom: 5px;
}

.service-body .text-muted {
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 1px;
    color: var(--color-accent-blue);
    margin-bottom: 15px;
}

.services-footer {
    margin-top: 50px;
}

.highlight-text {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-primary-medium);
}

/* ==========================================================================
   7. Corporate Social Investment & Eco-Development Area
   ========================================================================== */
.csi-section {
    background-color: #ffffff;
}

.csi-card {
    text-align: center;
    padding: 30px;
}

.csi-icon {
    width: 70px;
    height: 70px;
    background-color: rgba(94, 135, 89, 0.1); 
    color: var(--color-accent-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 20px auto;
}

.csi-card h3 {
    font-size: 1.35rem;
    margin-bottom: 15px;
}

/* ==========================================================================
   7.5 Meet Our Team Section Component System
   ========================================================================== */
.team-section {
    background-color: #ffffff;
    border-top: 1px solid var(--color-border-mute);
}

.team-card {
    background-color: #ffffff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
    border: 1px solid var(--color-border-mute);
    text-align: center;
    transition: transform 0.2s ease;
    display: flex;
    flex-direction: column;
}

.team-card:hover {
    transform: translateY(-4px);
}

.team-img-wrapper {
    width: 100%;
    height: auto;
    overflow: hidden;
    background-color: var(--color-light-bg);
    border-bottom: 1px solid var(--color-border-mute);
    display: block;
}

.team-img-wrapper img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.team-body {
    padding: 25px 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.team-body h3 {
    font-size: 1.35rem;
    color: var(--color-primary-dark);
    margin-bottom: 4px;
}

.team-body .team-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-accent-blue);
    margin-bottom: 12px;
}

.team-body p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: 15px;
}

.team-email {
    margin-top: auto;
    padding-top: 10px;
    font-size: 0.9rem;
    border-top: 1px dashed var(--color-border-mute);
}

.team-email a {
    color: var(--color-primary-medium);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: color 0.2s ease;
}

.team-email a:hover {
    color: var(--color-accent-blue);
    text-decoration: underline;
}

/* ==========================================================================
   8. Accordion UI Module Logic Configuration (FAQs)
   ========================================================================== */
.faq-section {
    background-color: var(--color-light-bg);
}

.accordion-wrapper {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 30px;
}

.accordion-item {
    background-color: #ffffff;
    border: 1px solid var(--color-border-mute);
    border-radius: 6px;
    overflow: hidden;
}

.accordion-trigger {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    background: none;
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary-dark);
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.accordion-trigger:hover, .accordion-trigger:focus {
    background-color: rgba(59, 86, 166, 0.03);
}

.accordion-trigger i {
    transition: transform 0.25s ease;
    color: var(--color-text-muted);
}

.accordion-trigger[aria-expanded="true"] i {
    transform: rotate(180deg);
    color: var(--color-accent-blue);
}

.accordion-panel {
    padding: 0 25px 20px 25px;
    color: var(--color-text-dark);
    border-top: 1px solid transparent;
}

.accordion-panel.active {
    border-top-color: var(--color-border-mute);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   9. Contact Layout Blocks & Lead Collection Forms
   ========================================================================== */
.contact-section {
    background-color: #ffffff;
}

.nap-block {
    font-style: normal;
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 30px;
}

.nap-item {
    display: flex;
    gap: 15px;
    align-items: flex-start;
}

.nap-item i {
    font-size: 1.25rem;
    color: var(--color-accent-blue);
    margin-top: 4px;
}

.nap-item strong {
    display: block;
    font-size: 0.9rem;
    text-transform: uppercase;
    color: var(--color-text-muted);
    letter-spacing: 0.5px;
}

.nap-item a {
    color: var(--color-primary-dark);
    text-decoration: none;
    font-weight: 600;
}

.nap-item a:hover {
    color: var(--color-accent-blue);
    text-decoration: underline;
}

.map-responsive-container {
    position: relative;
    padding-bottom: 56.25%; 
    height: 0;
    overflow: hidden;
    border-radius: 8px;
    border: 1px solid var(--color-border-mute);
    margin-bottom: 25px;
}

.map-responsive-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.mobile-quick-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.btn-email-direct {
    background-color: var(--color-accent-blue);
    color: white;
    padding: 12px;
    text-decoration: none;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-weight: 600;
}

.btn-call-direct {
    background-color: var(--color-primary-medium);
    color: white;
    padding: 12px;
    text-decoration: none;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-weight: 600;
}

.form-card {
    background-color: var(--color-light-bg);
    padding: 40px;
    border-radius: 12px;
    border: 1px solid var(--color-border-mute);
}

.form-card h3 {
    font-size: 1.75rem;
    margin-bottom: 5px;
}

.form-subtext {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin-bottom: 25px;
}

.callback-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 18px;
}

@media (min-width: 576px) {
    .form-row { grid-template-columns: repeat(2, 1fr); }
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary-dark);
}

.form-group input, 
.form-group select, 
.form-group textarea {
    padding: 12px;
    border: 1px solid var(--color-border-mute);
    border-radius: 6px;
    font-family: var(--font-stack);
    font-size: 1rem;
    background-color: #ffffff;
    color: var(--color-text-dark);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 86, 166, 0.15);
}

/* Anti-Spam Security Trapping Feature Definition */
.form-honeypot-trap {
    display: none !important;
    visibility: hidden !important;
    overflow: hidden !important;
    width: 0 !important;
    height: 0 !important;
}

/* Simple feedback alerts for form submissions */
.alert {
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-weight: 600;
    font-size: 0.95rem;
}
.alert-success {
    background-color: #eef8e8;
    color: var(--color-accent-green);
    border: 1px solid #d4e7c7;
}
.alert-error {
    background-color: #fdf2f2;
    color: #b91c1c;
    border: 1px solid #fee2e2;
}

/* ==========================================================================
   10. Semantic High-Contrast Structural Footer Setup
   ========================================================================== */
.site-footer {
    background-color: var(--color-primary-dark);
    color: var(--color-border-mute); 
    font-size: 0.85rem;
    padding: 40px 0;
    border-top: 4px solid var(--color-accent-blue);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 25px;
}

@media (min-width: 992px) {
    .footer-grid {
        grid-template-columns: 1.5fr 2fr 1fr;
    }
}

.footer-col p {
    line-height: 1.5;
}

.legal-disclaimer {
    font-size: 0.75rem;
    text-align: justify;
}

.attribution-link a {
    color: var(--color-text-light);
    text-decoration: none;
    font-weight: 600;
}

.attribution-link a:hover {
    text-decoration: underline;
}