/* ==========================================================================
   OKLAHOMA ENERGY SOLUTIONS
   GLOBAL DESIGN SYSTEM & STYLESHEET
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. DESIGN SYSTEM VARIABLES
   -------------------------------------------------------------------------- */
:root {
    /* Brand Palette */
    --primary-charcoal: #2C3539;
    --primary-charcoal-rgb: 44, 53, 57;
    --primary-yellow: #FFB81C;
    --primary-yellow-hover: #E6A519;
    
    /* Neutrals & UI Elements */
    --white: #FFFFFF;
    --neutral-light: #F4F6F7;
    --neutral-border: #E5E7EB;
    --text-dark: #1F2937;
    --text-muted: #6B7280;
    
    /* Typography */
    --font-heading: 'Oswald', sans-serif;
    --font-body: 'Roboto', sans-serif;
    
    /* Shadows & Transitions */
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.12);
    --shadow-yellow: 0 8px 20px rgba(255, 184, 28, 0.3);
    --shadow-yellow-hover: 0 12px 25px rgba(255, 184, 28, 0.55);
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Layout */
    --container-width: 1200px;
    --header-height: 105px;
}

/* --------------------------------------------------------------------------
   2. RESET & BASE ELEMENTS
   -------------------------------------------------------------------------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--text-dark);
    background-color: var(--white);
    line-height: 1.75;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--primary-charcoal);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1.15;
    font-weight: 700;
}

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

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

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* --------------------------------------------------------------------------
   3. TYPOGRAPHY UTILITIES
   -------------------------------------------------------------------------- */
.kicker {
    font-family: var(--font-heading);
    color: var(--primary-yellow);
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
}

.kicker-icon {
    font-size: 20px;
    line-height: 1;
}

/* --------------------------------------------------------------------------
   4. PREMIUM BUTTONS & INTERACTIVE ELEMENTS
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px 32px;
    font-family: var(--font-heading);
    font-size: 18px;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    font-weight: 700;
    line-height: 1.2;
}

.btn-yellow {
    background: var(--primary-yellow);
    color: var(--primary-charcoal);
    box-shadow: var(--shadow-yellow);
}

.btn-yellow:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-yellow-hover);
    background: var(--primary-yellow-hover);
}

.btn-yellow:active {
    transform: translateY(-1px);
}

.btn-white {
    background: var(--white);
    color: var(--primary-charcoal);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    border: 2px solid transparent;
}

.btn-white:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
    color: var(--primary-yellow-hover);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-charcoal);
    color: var(--primary-charcoal);
}

.btn-outline:hover {
    background: var(--primary-charcoal);
    color: var(--white);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.btn-outline-white {
    background: transparent;
    border: 2px solid var(--white);
    color: var(--white);
}

.btn-outline-white:hover {
    background: var(--white);
    color: var(--primary-charcoal);
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(255, 255, 255, 0.15);
}

/* --------------------------------------------------------------------------
   5. NAVIGATION HEADER (CHARCOAL GLASSMORPHISM)
   -------------------------------------------------------------------------- */
header {
    background: rgba(var(--primary-charcoal-rgb), 0.96);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

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

.logo-wrap {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo-circle {
    width: 65px;
    height: 65px;
    border-radius: 50%;
    object-fit: contain;
    border: 2px solid var(--primary-yellow);
    box-shadow: 0 4px 15px rgba(255, 184, 28, 0.2);
    background: var(--white);
    padding: 3px;
    transition: transform var(--transition-normal);
}

.logo-wrap:hover .logo-circle {
    transform: rotate(15deg) scale(1.05);
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 22px;
    line-height: 1.1;
    color: var(--white);
    letter-spacing: 0.8px;
    font-weight: 700;
}

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

.nav-links a {
    padding: 10px 18px;
    font-weight: 500;
    font-size: 16px;
    color: rgba(255, 255, 255, 0.85);
    text-transform: uppercase;
    font-family: var(--font-heading);
    letter-spacing: 1px;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2.5px;
    background: var(--primary-yellow);
    transition: width var(--transition-normal);
    border-radius: 2px;
}

.nav-links a:hover::after, 
.nav-links a.active::after {
    width: 75%;
}

.nav-links a:hover, 
.nav-links a.active {
    color: var(--primary-yellow);
}

.nav-links > .btn-yellow {
    display: none;
}

/* Mobile Toggle Hamburger */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 20px;
    cursor: pointer;
    z-index: 1100;
}

.menu-toggle span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: var(--white);
    border-radius: 3px;
    transition: all var(--transition-normal);
}

/* --------------------------------------------------------------------------
   6. UNIVERSAL SUB-PAGE HEADER (CHARCOAL BANNER)
   -------------------------------------------------------------------------- */
.page-header {
    background: var(--primary-charcoal);
    padding: 90px 0 100px;
    text-align: center;
    border-bottom: 5px solid var(--primary-yellow);
    position: relative;
    overflow: hidden;
}

/* Subtle background accent */
.page-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    border: 60px solid rgba(255, 184, 28, 0.02);
    pointer-events: none;
}

.page-header h1 {
    font-size: 64px;
    margin-bottom: 16px;
    color: var(--white);
    letter-spacing: 1px;
}

.page-header p {
    font-size: 20px;
    color: #A0AEC0;
    max-width: 750px;
    margin: 0 auto;
    font-weight: 300;
}

/* --------------------------------------------------------------------------
   7. GLOBAL FOOTER (CHARCOAL STABILITY)
   -------------------------------------------------------------------------- */
footer {
    background: var(--white);
    color: var(--text-muted);
    padding: 80px 0 40px;
    border-top: 5px solid var(--primary-yellow);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 50px;
}

.footer-brand .logo-wrap {
    margin-bottom: 24px;
}

.footer-brand .logo-text {
    color: var(--primary-charcoal);
}

.footer-brand p {
    font-size: 15px;
    line-height: 1.6;
    max-width: 320px;
}

.footer-column h4 {
    color: var(--primary-charcoal);
    margin-bottom: 24px;
    font-size: 18px;
    letter-spacing: 1px;
    border-bottom: 1px solid var(--neutral-border);
    padding-bottom: 10px;
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: 12px;
}

.footer-column a {
    color: var(--text-muted);
    font-size: 15px;
}

.footer-column a:hover {
    color: var(--primary-yellow-hover);
    transform: translateX(5px);
    display: inline-block;
}

.footer-bottom {
    border-top: 1px solid var(--neutral-border);
    padding-top: 30px;
    text-align: center;
    font-size: 14px;
    color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   8. FORM PORTAL DESIGN SYSTEM
   -------------------------------------------------------------------------- */
.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-family: var(--font-heading);
    font-weight: 500;
    text-transform: uppercase;
    margin-bottom: 8px;
    color: var(--primary-charcoal);
    letter-spacing: 0.5px;
}

.form-control {
    width: 100%;
    padding: 15px 18px;
    border: 2px solid var(--neutral-border);
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 16px;
    color: var(--text-dark);
    outline: none;
    transition: all var(--transition-normal);
    background: var(--neutral-light);
}

.form-control::placeholder {
    color: #A0AEC0;
}

.form-control:focus {
    border-color: var(--primary-charcoal);
    box-shadow: 0 0 0 4px rgba(44, 53, 57, 0.1);
    background: var(--white);
}

/* Form validation styling */
.form-control:user-invalid {
    border-color: #E53E3E;
    background: rgba(229, 62, 62, 0.02);
}

/* --------------------------------------------------------------------------
   9. HOME PAGE (INDEX.HTML) SPECIFIC STYLES
   -------------------------------------------------------------------------- */
/* Split Hero Layout */
.split-hero {
    display: flex;
    min-height: calc(100vh - var(--header-height));
    background: var(--white);
    position: relative;
}

.split-text {
    flex: 1;
    padding: 100px 8%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    z-index: 2;
}

.split-img {
    flex: 1;
    background: url('https://images.unsplash.com/photo-1508514177221-188b1cf16e9d?auto=format&fit=crop&q=80') center/cover no-repeat;
    position: relative;
    min-height: 400px;
}

.split-img::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, var(--white), transparent 15%);
}

.hero-h1 {
    font-size: 72px;
    margin-bottom: 24px;
    line-height: 1.05;
    color: var(--primary-charcoal);
}

.hero-p {
    font-size: 22px;
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 600px;
    font-weight: 300;
}

.hero-actions {
    display: flex;
    gap: 18px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

/* Trust Badges */
.trust-logos {
    display: flex;
    gap: 36px;
    align-items: center;
    opacity: 0.65;
    filter: grayscale(100%);
    transition: all var(--transition-normal);
}

.trust-logos:hover {
    opacity: 0.95;
    filter: grayscale(0%);
}

.trust-logos img {
    height: 38px;
}

.trust-badge-text {
    font-family: var(--font-heading);
    font-size: 18px;
    letter-spacing: 1px;
    color: var(--primary-charcoal);
    font-weight: 700;
}

/* Services Preview Section (Bottom Charcoal Layer) */
.services-preview {
    padding: 120px 0;
    background: var(--primary-charcoal);
    position: relative;
}

.services-preview-title {
    text-align: center;
    margin-bottom: 64px;
}

.services-preview-title h2 {
    font-size: 48px;
    color: var(--white);
    margin-bottom: 16px;
}

.services-preview-title p {
    font-size: 20px;
    color: #A0AEC0;
    font-weight: 300;
}

.service-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.s-card {
    background: var(--white);
    padding: 48px 36px;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    border-top: 6px solid var(--primary-yellow);
    display: flex;
    flex-direction: column;
}

.s-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.35);
}

.s-card-icon {
    font-size: 40px;
    margin-bottom: 24px;
}

.s-card h3 {
    font-size: 26px;
    margin-bottom: 16px;
}

.s-card p {
    margin-bottom: 30px;
    color: var(--text-muted);
    font-size: 16px;
    flex-grow: 1;
}

.s-card-link {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 700;
    color: var(--primary-charcoal);
    text-transform: uppercase;
    letter-spacing: 1px;
    border-bottom: 2px solid var(--primary-yellow);
    padding-bottom: 4px;
    align-self: flex-start;
}

.s-card-link:hover {
    color: var(--primary-yellow-hover);
    border-color: var(--primary-charcoal);
}

/* --------------------------------------------------------------------------
   10. SERVICES PAGE (SERVICES.HTML) SPECIFIC STYLES
   -------------------------------------------------------------------------- */
/* Overlapping Alternate Grid Layout */
.s-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-top: 100px;
    align-items: center;
}

.s-grid:nth-child(even) {
    direction: rtl;
}

.s-grid:nth-child(even) > * {
    direction: ltr;
}

.s-content {
    background: var(--white);
    padding: 60px;
    z-index: 10;
    position: relative;
    box-shadow: var(--shadow-lg);
    border-top: 6px solid var(--primary-yellow);
    border-radius: 8px;
    margin-right: -80px;
    transition: transform var(--transition-normal);
}

.s-grid:nth-child(even) .s-content {
    margin-right: 0;
    margin-left: -80px;
}

.s-grid:hover .s-content {
    transform: scale(1.02);
}

.s-image-container {
    overflow: hidden;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    height: 500px;
}

.s-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.s-grid:hover .s-image {
    transform: scale(1.06);
}

.s-content h2 {
    font-size: 38px;
    margin-bottom: 20px;
}

.s-content p {
    font-size: 16px;
    color: var(--text-muted);
    margin-bottom: 30px;
}

/* Feature List Checks */
.feature-list {
    list-style: none;
    margin-bottom: 36px;
}

.feature-list li {
    font-size: 16px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 16px;
    font-family: var(--font-heading);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    font-weight: 500;
}

.check-box {
    width: 24px;
    height: 24px;
    background: var(--primary-yellow);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    color: var(--primary-charcoal);
    font-weight: 700;
    font-size: 14px;
}

/* CTA Subpage Banner */
.cta-banner {
    background: var(--primary-charcoal);
    padding: 100px 0;
    margin-top: 120px;
    text-align: center;
    color: var(--white);
    border-top: 5px solid var(--primary-yellow);
    position: relative;
    overflow: hidden;
}

.cta-banner h2 {
    color: var(--white);
    font-size: 48px;
    margin-bottom: 16px;
}

.cta-banner p {
    font-size: 20px;
    color: #A0AEC0;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 300;
}

/* --------------------------------------------------------------------------
   11. FAQ PAGE (FAQ.HTML) SPECIFIC STYLES
   -------------------------------------------------------------------------- */
.faq-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    padding: 100px 0;
    align-items: start;
}

/* Accordion Layout */
details {
    background: var(--white);
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    border: 1px solid var(--neutral-border);
    transition: all var(--transition-normal);
}

details[open] {
    border-left: 5px solid var(--primary-yellow);
    box-shadow: var(--shadow-md);
}

summary {
    padding: 24px 30px;
    font-family: var(--font-heading);
    font-size: 22px;
    color: var(--primary-charcoal);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--white);
    font-weight: 500;
    transition: background-color var(--transition-fast);
    outline: none;
}

summary::-webkit-details-marker {
    display: none;
}

summary::after {
    content: '+';
    font-size: 28px;
    color: var(--primary-yellow);
    font-weight: 700;
    transition: transform var(--transition-normal);
    line-height: 1;
}

details[open] summary::after {
    content: '-';
    color: var(--primary-charcoal);
}

summary:hover {
    background: var(--neutral-light);
}

.faq-answer {
    padding: 24px 30px 30px;
    font-size: 16px;
    color: var(--text-muted);
    line-height: 1.8;
    border-top: 1px solid var(--neutral-border);
    background-color: rgba(244, 246, 247, 0.3);
}

/* Sidebar Floating Contact Info Box */
.help-box {
    background: var(--primary-charcoal);
    padding: 48px 36px;
    border-radius: 8px;
    color: var(--white);
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 120px;
    border-top: 5px solid var(--primary-yellow);
    z-index: 10;
}

.help-box h3 {
    color: var(--white);
    font-size: 32px;
    margin-bottom: 16px;
}

.help-box p {
    color: #A0AEC0;
    font-size: 16px;
    margin-bottom: 30px;
    font-weight: 300;
}

.help-box hr {
    border: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    margin: 24px 0;
}

.help-box-phone {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-yellow);
    display: flex;
    align-items: center;
    gap: 12px;
}

/* --------------------------------------------------------------------------
   12. CONTACT PAGE (CONTACT.HTML) SPECIFIC STYLES
   -------------------------------------------------------------------------- */
.contact-layout {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 0;
    padding: 100px 0;
    align-items: stretch;
}

/* Lead Portal Card */
.form-portal {
    background: var(--white);
    padding: 60px 48px;
    border-radius: 8px 0 0 8px;
    box-shadow: -10px 10px 30px rgba(0, 0, 0, 0.05), 0 20px 40px rgba(0, 0, 0, 0.08);
    position: relative;
    z-index: 10;
    border-top: 5px solid var(--primary-yellow);
    border-bottom: 1px solid var(--neutral-border);
    border-left: 1px solid var(--neutral-border);
}

.form-portal h2 {
    font-size: 40px;
    margin-bottom: 8px;
}

.form-portal > p {
    font-size: 16px;
    color: var(--text-muted);
    margin-bottom: 36px;
}

/* Info Sidebar */
.contact-sidebar {
    background: var(--primary-charcoal);
    color: var(--white);
    padding: 72px 48px;
    border-radius: 0 8px 8px 0;
    box-shadow: 10px 10px 30px rgba(0, 0, 0, 0.1), 20px 20px 40px rgba(0, 0, 0, 0.15);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.contact-sidebar-top h3 {
    color: var(--primary-yellow);
    font-size: 28px;
    margin-bottom: 24px;
}

.info-tab {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
    margin-bottom: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-normal);
}

.info-tab:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--primary-yellow);
    transform: translateX(8px);
}

.tab-icon {
    font-size: 20px;
    background: var(--primary-yellow);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--primary-charcoal);
    flex-shrink: 0;
}

.tab-title {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 2px;
    color: var(--white);
}

.tab-content {
    color: #A0AEC0;
    font-size: 15px;
}

/* Address Map Placeholder */
.map-placeholder {
    height: 220px;
    background: linear-gradient(rgba(44, 53, 57, 0.45), rgba(44, 53, 57, 0.45)), 
                url('https://images.unsplash.com/photo-1524661135-423995f22d0b?auto=format&fit=crop&q=80') center/cover no-repeat;
    border-radius: 8px;
    margin-top: 30px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.map-tag {
    background: var(--primary-yellow);
    color: var(--primary-charcoal);
    padding: 10px 20px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 16px;
    border-radius: 4px;
    box-shadow: var(--shadow-md);
    letter-spacing: 0.5px;
}

/* --------------------------------------------------------------------------
   13. RESPONSIVE BREAKPOINTS (MEDIA QUERIES)
   -------------------------------------------------------------------------- */

/* Large Tablets & Desktop Refinements */
@media (max-width: 1024px) {
    .hero-h1 {
        font-size: 56px;
    }
    .service-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    .s-content {
        padding: 40px;
        margin-right: -40px;
    }
    .s-grid:nth-child(even) .s-content {
        margin-left: -40px;
    }
    .contact-layout {
        grid-template-columns: 1.2fr 1fr;
    }
    .form-portal {
        padding: 40px 30px;
    }
    .contact-sidebar {
        padding: 40px 30px;
    }
}

/* Small Tablets & Mobile Devices */
@media (max-width: 768px) {
    /* Header Responsive */
    header {
        padding: 12px 0;
    }
    .logo-circle {
        width: 50px;
        height: 50px;
    }
    .logo-text {
        font-size: 18px;
    }
    
    /* Hamburger Menu Activation */
    .menu-toggle {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background-color: var(--primary-charcoal);
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;
        padding: 100px 40px 40px;
        gap: 16px;
        box-shadow: -10px 0 40px rgba(0,0,0,0.45);
        transition: right var(--transition-normal);
        z-index: 1050;
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .nav-links a {
        font-size: 22px;
        width: 100%;
        padding: 12px 0;
        border-bottom: 1px solid rgba(255,255,255,0.05);
    }
    
    .nav-links a::after {
        display: none; /* Disable underline on mobile list */
    }
    
    .nav-links a:hover,
    .nav-links a.active {
        padding-left: 10px;
    }
    
    /* Navigation Call to Action Hide/Refactor */
    .nav-inner > .btn-yellow {
        display: none; /* Hide top CTA on small screens */
    }
    .nav-links > .btn-yellow {
        display: inline-flex; /* Show inside slide-out menu */
        margin-top: 24px;
        width: 100%;
    }
    
    /* Split Hero Responsive */
    .split-hero {
        flex-direction: column-reverse;
        min-height: auto;
    }
    .split-text {
        padding: 60px 24px;
    }
    .split-img {
        height: 350px;
        min-height: auto;
    }
    .split-img::after {
        background: linear-gradient(to top, var(--white), transparent 25%);
    }
    .hero-h1 {
        font-size: 42px;
    }
    
    /* General Pages Header */
    .page-header {
        padding: 60px 0 70px;
    }
    .page-header h1 {
        font-size: 40px;
    }
    .page-header p {
        font-size: 16px;
    }
    
    /* Services cards homepage */
    .service-cards {
        grid-template-columns: 1fr;
    }
    .services-preview-title h2 {
        font-size: 32px;
    }
    
    /* Services page grid overlaps collapse */
    .s-grid, 
    .s-grid:nth-child(even) {
        grid-template-columns: 1fr;
        margin-top: 60px;
    }
    .s-content,
    .s-grid:nth-child(even) .s-content {
        margin: 0;
        border-radius: 8px 8px 0 0;
        padding: 40px 24px;
        order: 2; /* Push text content below the image on mobile */
    }
    .s-image-container {
        height: 300px;
        border-radius: 0 0 8px 8px;
        order: 1;
    }
    
    /* FAQ page layouts */
    .faq-layout {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 60px 0;
    }
    .help-box {
        position: relative;
        top: 0;
    }
    
    /* Contact page layouts */
    .contact-layout {
        grid-template-columns: 1fr;
        padding: 60px 0;
    }
    .form-portal {
        border-radius: 8px 8px 0 0;
        padding: 40px 24px;
        border-right: 1px solid var(--neutral-border);
    }
    .contact-sidebar {
        border-radius: 0 0 8px 8px;
        padding: 40px 24px;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    }
    
    /* Footer columns collapse */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }
}