/* ==========================================================================
   GDI Invoice Landing Page CSS
   Theme: Business Light Mode (White background, Deep Red, Deep Blue, Black)
   Features: Full-Screen Hero Slider (100vh), Sticky Menu at Bottom of fold, Open Sans Font
   ========================================================================== */

:root {
    --bg-white: #ffffff;
    --bg-light: #f8fafc;
    --bg-light-alt: #f1f5f9;
    
    /* Brand Colors */
    --deep-blue: #0b2545;
    --deep-blue-hover: #134074;
    --deep-red: #c21820;
    --deep-red-hover: #9e1017;
    
    /* Text */
    --text-dark: #0f172a;
    --text-muted: #475569;
    --text-light: #94a3b8;
    
    /* Neutrals */
    --border-color: #e2e8f0;
    --card-shadow: 0 10px 30px -10px rgba(11, 37, 69, 0.1);
    --card-shadow-hover: 0 20px 40px -15px rgba(194, 24, 32, 0.15);
    
    /* Fonts */
    --font-title: 'Open Sans', sans-serif;
    --font-body: 'Open Sans', sans-serif;
}

/* Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: var(--font-body);
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 85px;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Full-Screen Hero Slider (100vh) */
.hero-slider-container {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    background-color: #030712;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.slide.active {
    opacity: 1;
    z-index: 2;
}

/* Background image inside slides — now a real <img> element for LCP optimization */
picture.slide-bg,
img.slide-bg,
.slide-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
    display: block;
}

/* When slide-bg is an img tag directly */
img.slide-bg {
    object-fit: cover;
    object-position: center;
    filter: brightness(0.45) contrast(1.05);
}

picture.slide-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    filter: brightness(0.45) contrast(1.05);
    display: block;
}

/* Dark overlay on top of each slide image */
.slide::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0,0,0,0.25) 0%, rgba(0,0,0,0.5) 100%);
    z-index: 1;
    pointer-events: none;
}

.slide-content {
    position: relative;
    z-index: 3;
    text-align: center;
    padding: 0 24px;
    max-width: 1150px;
    margin-bottom: 80px; /* Offset upward to prevent header menu overlap */
}

.slide-content h1, .slide-content h2 {
    font-family: var(--font-title);
    font-size: 3.5rem;
    font-weight: 800;
    color: #ffffff;
    line-height: 1.25;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.slide-content p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 35px;
}

/* Navigation Header at Bottom of Viewport */
header {
    position: absolute;
    top: 100vh;
    transform: translateY(-100%);
    left: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.96);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

/* Default state when header is not sticky (centered navigation, no logo) */
header:not(.sticky) .nav-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 15px;
    height: auto;
    padding: 15px 0;
}

header:not(.sticky) .logo-area {
    display: none !important;
}

header:not(.sticky) .nav-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px 30px;
    align-items: center;
    width: 100%;
}

header.sticky {
    position: fixed;
    top: 0;
    transform: none;
    bottom: auto;
    border-top: none;
    box-shadow: 0 4px 25px rgba(11, 37, 69, 0.08);
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(12px);
    animation: slideDown 0.3s ease-in-out;
}

/* Sticky nav: horizontal layout — logo LEFT, links RIGHT */
header.sticky .nav-wrapper {
    display: flex !important;
    flex-direction: row !important;
    justify-content: center !important;
    align-items: center !important;
    height: 70px !important;
}

header.sticky .logo-area {
    display: flex !important;
    position: absolute !important;
    left: 40px !important;
    top: 50% !important;
    transform: translateY(-50%) !important;
    width: auto !important;
}

header.sticky .logo-white {
    display: none !important;
}

header.sticky .logo-color {
    display: block !important;
}

header.sticky .nav-links {
    display: flex !important;
    justify-content: center !important;
    width: auto !important;
    flex-wrap: nowrap !important;
    gap: 20px !important;
}

/* Logo transition */
.logo-white, .logo-color {
    transition: opacity 0.25s ease;
}

@keyframes slideDown {
    from { transform: translateY(-100%); }
    to { transform: translateY(0); }
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 85px;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-img {
    height: 70px;
    width: auto;
    display: block;
    object-fit: contain;
}

.logo-text {
    font-family: var(--font-title);
    font-weight: 800;
    font-size: 1.65rem;
    letter-spacing: 0.5px;
    color: var(--deep-blue);
}

.logo-text span {
    color: var(--deep-red);
}

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 700;
    transition: color 0.3s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--deep-red) !important;
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--deep-red) 0%, #a81319 100%);
    color: #ffffff !important;
    padding: 12px 26px;
    border-radius: 6px;
    font-weight: 700;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(194, 24, 32, 0.2);
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(194, 24, 32, 0.4);
}

.btn-secondary {
    background: #ffffff;
    border: 1px solid var(--border-color);
    color: var(--deep-blue) !important;
    padding: 12px 26px;
    border-radius: 6px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-secondary:hover {
    background: var(--bg-light-alt);
    transform: translateY(-2px);
}

.btn-blue {
    background: linear-gradient(135deg, var(--deep-blue) 0%, #1a3c68 100%);
    color: #ffffff !important;
    padding: 12px 26px;
    border-radius: 6px;
    font-weight: 700;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(11, 37, 69, 0.2);
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-blue:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(11, 37, 69, 0.4);
}

/* Sections */
.features {
    padding: 120px 0;
    background-color: var(--bg-light);
    position: relative;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.section-header {
    text-align: center;
    margin-bottom: 70px;
}

.section-header h2 {
    font-family: var(--font-title);
    font-size: 2.8rem;
    font-weight: 850;
    margin-bottom: 20px;
    color: var(--deep-blue);
}

.section-header p {
    color: var(--text-muted);
    max-width: 650px;
    margin: 0 auto;
    font-size: 1.1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 36px;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 16px;
    box-shadow: var(--card-shadow);
}

.feature-card:hover {
    box-shadow: var(--card-shadow-hover);
}

.feature-icon {
    width: 55px;
    height: 55px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
}

/* Feature Card Left Border & Icon Colors */
.feature-card.border-blue {
    border-left: 4px solid #3b82f6;
}
.feature-card.border-blue .feature-icon {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
}

.feature-card.border-green {
    border-left: 4px solid #10b981;
}
.feature-card.border-green .feature-icon {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
}

.feature-card.border-orange {
    border-left: 4px solid #f59e0b;
}
.feature-card.border-orange .feature-icon {
    background: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
}

.feature-card.border-purple {
    border-left: 4px solid #8b5cf6;
}
.feature-card.border-purple .feature-icon {
    background: rgba(139, 92, 246, 0.1);
    color: #8b5cf6;
}

.feature-card.border-pink {
    border-left: 4px solid #ec4899;
}
.feature-card.border-pink .feature-icon {
    background: rgba(236, 72, 153, 0.1);
    color: #ec4899;
}

.feature-card.border-red {
    border-left: 4px solid #ef4444;
}
.feature-card.border-red .feature-icon {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.feature-card.border-teal {
    border-left: 4px solid #14b8a6;
}
.feature-card.border-teal .feature-icon {
    background: rgba(20, 184, 166, 0.1);
    color: #14b8a6;
}

.feature-card.border-indigo {
    border-left: 4px solid #6366f1;
}
.feature-card.border-indigo .feature-icon {
    background: rgba(99, 102, 241, 0.1);
    color: #6366f1;
}

.feature-card.border-cyan {
    border-left: 4px solid #06b6d4;
}
.feature-card.border-cyan .feature-icon {
    background: rgba(6, 182, 212, 0.1);
    color: #06b6d4;
}

.feature-card h3 {
    font-family: var(--font-title);
    font-size: 1.35rem;
    font-weight: 750;
    color: var(--deep-blue);
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.98rem;
    line-height: 1.6;
}

/* Pricing Section */
.pricing {
    padding: 120px 0;
    background: var(--bg-white);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 24px;
    align-items: stretch;
}

.price-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px 30px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.3s ease;
    position: relative;
    box-shadow: var(--card-shadow);
}

.price-card.featured {
    border-color: var(--deep-red);
    box-shadow: 0 15px 35px rgba(194, 24, 32, 0.1);
}

.price-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--deep-red);
    color: var(--bg-white);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.price-header h3 {
    font-family: var(--font-title);
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 10px;
    color: var(--deep-blue);
}

.price-amount {
    font-family: var(--font-title);
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--deep-blue);
    margin: 15px 0;
    display: flex;
    align-items: baseline;
}

.price-amount span {
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-left: 6px;
}

.price-features {
    list-style: none;
    margin: 30px 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.price-features li {
    font-size: 0.95rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 10px;
}

.price-features li i {
    color: var(--deep-red);
}

/* Call to Action Forms */
.cta-section {
    padding: 120px 0;
    background: var(--bg-light);
    border-top: 1px solid var(--border-color);
}

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

.cta-form-container {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 45px;
    box-shadow: var(--card-shadow);
}

.cta-form-container h3 {
    font-family: var(--font-title);
    font-size: 1.8rem;
    margin-bottom: 12px;
    font-weight: 800;
    color: var(--deep-blue);
}

.cta-form-container p {
    color: var(--text-muted);
    margin-bottom: 30px;
    font-size: 0.95rem;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--deep-blue);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-control {
    width: 100%;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 14px 18px;
    color: var(--text-dark);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: all 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--deep-red);
    box-shadow: 0 0 0 3px rgba(194, 24, 32, 0.15);
    background: var(--bg-white);
}

.checkbox-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 10px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-muted);
    cursor: pointer;
}

.checkbox-label input {
    accent-color: var(--deep-red);
    width: 18px;
    height: 18px;
}

.demo-credentials-box {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 24px;
    text-align: center;
}

.demo-credentials-box span.code {
    font-family: var(--font-title);
    font-size: 1.65rem;
    font-weight: 800;
    color: var(--deep-red);
    letter-spacing: 2px;
    display: block;
    margin-top: 8px;
}

/* Alert Success */
.alert-success {
    background: #ecfdf5;
    border: 1px solid #a7f3d0;
    color: #065f46;
    padding: 16px;
    border-radius: 10px;
    margin-bottom: 24px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Footer */
footer {
    background: var(--deep-blue);
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 50px 0;
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
}

footer p {
    margin-bottom: 12px;
}

footer a {
    color: var(--bg-white);
    text-decoration: none;
    transition: color 0.3s;
}

footer a:hover {
    color: var(--deep-red);
}

/* Slider Controls */
.slider-dots {
    position: absolute;
    bottom: 120px; /* Positioned above the bottom navigation menu */
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: background 0.3s;
}

.dot.active {
    background: var(--deep-red);
    box-shadow: 0 0 10px var(--glow-red);
}

/* Responsive Styles */
@media (max-width: 992px) {
    .hero h1, .slide-content h2 {
        font-size: 2.8rem;
    }
    .cta-grid {
        grid-template-columns: 1fr;
    }
    .preview-body {
        grid-template-columns: 1fr;
    }
    .price-card.featured {
        transform: none;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .hero h1, .slide-content h2 {
        font-size: 2.2rem;
    }
    .features-grid {
        grid-template-columns: 1fr;
    }
    .pricing-grid {
        grid-template-columns: 1fr;
    }
}

/* Floating Slider Logo */
.slider-logo {
    position: absolute;
    top: 30px;
    left: 40px;
    z-index: 100;
    display: block;
}

.slider-logo img {
    height: 70px;
    width: auto;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.4));
    transition: transform 0.3s ease;
}

.slider-logo img:hover {
    transform: scale(1.05);
}

@media (max-width: 768px) {
    .slider-logo {
        top: 20px;
        left: 50%;
        transform: translateX(-50%);
    }
    .slider-logo img {
        height: 50px;
    }
}

/* Scroll to Top Button */
.scroll-to-top-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--deep-red);
    color: #ffffff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: 0 4px 15px rgba(194, 24, 32, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-to-top-btn.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-to-top-btn:hover {
    background-color: var(--deep-red-hover);
    box-shadow: 0 6px 20px rgba(194, 24, 32, 0.5);
    transform: translateY(-3px);
}

/* Calculator Checkbox Hover Effect */
.checkbox-label:hover {
    border-color: #3b82f6 !important;
    background: var(--bg-white) !important;
}

/* Success Modal Styles */
.success-modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.success-modal-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.success-modal-card {
    background: #ffffff;
    border-radius: 24px;
    padding: 40px;
    width: 90%;
    max-width: 520px;
    box-shadow: 0 25px 50px -12px rgba(15, 23, 42, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.8);
    text-align: center;
    transform: scale(0.8) translateY(30px);
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.success-modal-backdrop.active .success-modal-card {
    transform: scale(1) translateY(0);
}

.success-modal-icon-wrapper {
    width: 80px;
    height: 80px;
    background: rgba(34, 197, 94, 0.1);
    color: #22c55e;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto 24px auto;
    position: relative;
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.5);
    animation: success-pulse 2s infinite;
}

@keyframes success-pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.4);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(34, 197, 94, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(34, 197, 94, 0);
    }
}

.success-modal-title {
    font-family: var(--font-title);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--deep-blue);
    margin-bottom: 12px;
}

.success-modal-text {
    font-size: 1rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 30px;
}

.success-modal-btn {
    display: inline-block;
    width: 100%;
    padding: 14px 28px;
    background: linear-gradient(135deg, var(--deep-blue) 0%, var(--deep-blue-hover) 100%);
    color: #ffffff;
    font-size: 1rem;
    font-weight: 700;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    box-shadow: 0 10px 20px -5px rgba(11, 37, 69, 0.3);
    transition: all 0.3s ease;
}

.success-modal-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 25px -5px rgba(11, 37, 69, 0.4);
}

.success-modal-btn:active {
    transform: translateY(0);
}

/* ==========================================================================
   Performance Optimizations (PageSpeed / Core Web Vitals)
   ========================================================================== */

/* content-visibility: skip rendering off-screen sections until scroll */
section:not(.hero-slider-container) {
    content-visibility: auto;
    contain-intrinsic-size: 0 600px;
}

/* Use GPU compositing for animated elements to avoid layout thrash */
.slide,
.slide-bg,
.price-card,
.feature-card {
    will-change: transform;
}


/* Ensure normal images don't cause layout shift (except slide-bg which needs 100% height) */
img:not(.slide-bg) {
    max-width: 100%;
    height: auto;
}

/* Slide-bg img fills the entire slide container */
img.slide-bg {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
    object-position: center !important;
    max-width: none !important;
}

/* Hint browser to use smooth image rendering */
img {
    image-rendering: auto;
}

/* ==========================================================================
   Responsive & Mobile Optimization Rules (Google PageSpeed / Mobile friendliness)
   ========================================================================== */
@media (max-width: 992px) {
    /* Main Header: Pin to top on mobile from the start */
    header, header:not(.sticky) {
        position: fixed !important;
        top: 0 !important;
        transform: none !important;
        bottom: auto !important;
        box-shadow: 0 4px 25px rgba(11, 37, 69, 0.08) !important;
        background: rgba(255, 255, 255, 0.98) !important;
        backdrop-filter: blur(12px) !important;
        z-index: 1000 !important;
        border-top: none !important;
    }

    /* Hide the floating slider logo to avoid duplicates */
    .slider-logo {
        display: none !important;
    }

    /* Header layout changes */
    .nav-wrapper {
        height: 70px !important;
        padding: 0 15px !important;
        position: relative !important;
    }
    
    header.sticky .nav-wrapper, header:not(.sticky) .nav-wrapper {
        height: 70px !important;
    }
    
    /* Make sure logo area is displayed on mobile */
    header .logo-area, header:not(.sticky) .logo-area {
        display: flex !important;
        position: absolute !important;
        left: 20px !important;
        top: 50% !important;
        transform: translateY(-50%) !important;
        width: auto !important;
    }
    
    /* On mobile, we always use the colored logo since header bg is white/light */
    header .logo-white, header:not(.sticky) .logo-white {
        display: none !important;
    }
    
    header .logo-color, header:not(.sticky) .logo-color {
        display: block !important;
    }

    .menu-toggle {
        display: block !important;
        position: absolute !important;
        right: 20px !important;
        top: 50% !important;
        transform: translateY(-50%) !important;
        color: var(--deep-blue) !important;
    }
    
    header:not(.sticky) .menu-toggle, header.sticky .menu-toggle {
        color: var(--deep-blue) !important;
    }

    /* Hide normal horizontal menu, convert to vertical overlay */
    header .nav-links, header.sticky .nav-links {
        display: none !important;
        position: absolute !important;
        top: 100% !important;
        left: 0 !important;
        width: 100% !important;
        background: rgba(255, 255, 255, 0.98) !important;
        border-bottom: 2px solid var(--border-color) !important;
        flex-direction: column !important;
        padding: 25px 20px !important;
        gap: 15px !important;
        box-shadow: 0 10px 30px rgba(11, 37, 69, 0.15) !important;
        z-index: 9999 !important;
        max-height: calc(100vh - 70px) !important;
        overflow-y: auto !important;
    }
    
    header .nav-links.active, header.sticky .nav-links.active {
        display: flex !important;
    }
    
    .nav-links a {
        width: 100% !important;
        text-align: center !important;
        padding: 12px 0 !important;
        margin: 0 !important;
        font-size: 1.05rem !important;
        color: var(--deep-blue) !important;
    }
    
    .nav-links a.btn-primary, .nav-links a.btn-secondary {
        display: inline-flex !important;
        justify-content: center !important;
    }
    
    /* Slide font-sizes scaling */
    .slide-content h1, .slide-content h2 {
        font-size: 2.2rem !important;
        line-height: 1.3 !important;
        margin-bottom: 15px !important;
    }
    
    .slide-content p {
        font-size: 1rem !important;
        margin-bottom: 25px !important;
    }
    
    .slide-content {
        margin-bottom: 40px !important;
        padding-top: 80px !important; /* Offset for fixed mobile header */
    }
    
    /* Section Headings */
    .section-header {
        margin-bottom: 40px !important;
    }
    
    .section-header h2 {
        font-size: 2rem !important;
    }
    
    /* Pricing Grids & Columns */
    .pricing-grid {
        grid-template-columns: 1fr !important;
        gap: 20px !important;
    }
    
    .price-card {
        padding: 25px !important;
    }
    
    /* Features Grid */
    .features-grid {
        grid-template-columns: 1fr !important;
        gap: 20px !important;
    }
    
    /* Checkout & Contact CTA Grid */
    .cta-grid {
        grid-template-columns: 1fr !important;
        gap: 25px !important;
    }
    
    /* Package detail screenshot container aspect ratio */
    .detail-slider-container {
        aspect-ratio: 16/11 !important;
    }
    
    /* Flex container features columns scaling */
    .price-features {
        grid-template-columns: 1fr !important;
        gap: 10px !important;
    }
    
    /* Hero section top padding for subpages */
    .hero, .package-details-section {
        padding-top: 120px !important;
        padding-bottom: 50px !important;
    }
}

@media (max-width: 480px) {
    .slide-content h1, .slide-content h2 {
        font-size: 1.8rem !important;
    }
    
    .slide-content p {
        font-size: 0.95rem !important;
    }
    
    .hero-badge {
        font-size: 0.75rem !important;
        padding: 5px 10px !important;
    }
}