/* ==========================================================================
   INVESTOR STUDIO LLC - STYLESHEET
   Brand Style: Outbound Systems & Pipeline Infrastructure (Minimal, Technical)
   ========================================================================== */

/* 1. CSS RESET / NORMALIZE */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    text-size-adjust: 100%;
}

body {
    min-height: 100vh;
    text-rendering: optimizeSpeed;
    line-height: 1.6;
    overflow-x: hidden;
}

ul, ol {
    list-style: none;
}

a {
    text-decoration: none;
    color: inherit;
    background-color: transparent;
}

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

input, button, textarea, select {
    font: inherit;
}

button {
    cursor: pointer;
    background: none;
    border: none;
}

iframe {
    border: none;
    display: block;
}

/* 2. CSS CUSTOM PROPERTIES */
:root {
    /* Color Palette */
    --color-bg: #060814;          /* Deep Obsidian Navy */
    --color-surface: #0F1322;     /* Slate Graphite */
    --color-surface-hover: #1A1F35;
    --color-border: #1E293B;      /* Steel Gray Gridlines */
    --color-border-focus: #475569;
    --color-primary: #0D9488;     /* Slate Muted Teal */
    --color-primary-hover: #0F766E;
    --color-secondary: #C5A880;   /* Satin Brass Accent */
    --color-secondary-hover: #B59870;
    --color-text: #F8FAFC;        /* Ice White */
    --color-muted: #64748B;       /* Cool Muted Slate */
    --color-success: #10B981;     /* Emerald Green Status */
    --color-danger: #EF4444;      /* Red Alerts */
    --color-warning: #F59E0B;     /* Amber Warning */

    /* Typography */
    --font-heading: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-body: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'IBM Plex Mono', 'Courier New', Courier, monospace;

    /* Spacing Scale */
    --spacing-xxs: 0.25rem;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;

    /* Borders */
    --border-radius: 4px;         /* Strict sharp corners */
    --border-radius-sm: 2px;
    --border-radius-lg: 6px;

    /* Shadows & Effects */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
    
    /* Animations */
    --transition-speed: 0.2s;
    --transition-smooth: cubic-bezier(0.16, 1, 0.3, 1);
}

/* 3. GLOBAL / BASE STYLES */
body {
    background-color: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 400;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--border-radius);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* Selection Highlight */
::selection {
    background-color: var(--color-primary);
    color: var(--color-text);
}

/* Preloader */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: var(--color-bg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}
.preloader__spinner {
    width: 40px;
    height: 40px;
    border: 2px solid var(--color-border);
    border-top: 2px solid var(--color-secondary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}
.preloader__logo {
    margin-top: var(--spacing-md);
    font-family: var(--font-mono);
    color: var(--color-secondary);
    font-size: 0.85rem;
    letter-spacing: 2px;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Section Common */
.section {
    padding: var(--spacing-xxl) 0;
    border-bottom: 1px solid var(--color-border);
}
.section--grey {
    background-color: var(--color-surface);
}

/* 4. TYPOGRAPHY SCALE */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-text);
    line-height: 1.25;
    letter-spacing: -0.01em;
    font-weight: 600;
}
h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

.text-mono {
    font-family: var(--font-mono);
}
.text-brass {
    color: var(--color-secondary);
}
.text-teal {
    color: var(--color-primary);
}
.text-muted {
    color: var(--color-muted);
}

/* 5. UTILITY CLASSES */
.flex { display: flex; }
.grid { display: grid; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.flex-column { flex-direction: column; }
.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-xs { margin-bottom: var(--spacing-xs); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.py-md { padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); }

.w-full { width: 100%; }
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* Status tags (technical aesthetic) */
.status-tag {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-secondary);
    display: inline-block;
    padding: var(--spacing-xxs) var(--spacing-xs);
    border: 1px solid var(--color-border);
    background-color: rgba(197, 168, 128, 0.05);
    border-radius: var(--border-radius-sm);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}
.status-tag--active {
    color: var(--color-success);
    border-color: rgba(16, 185, 129, 0.3);
    background-color: rgba(16, 185, 129, 0.05);
}

/* Grid layout decoration lines */
.grid-lines {
    position: relative;
}
.grid-lines::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    pointer-events: none;
    border: 1px solid var(--color-border);
}

/* 6. COMPONENT STYLES */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.875rem;
    border-radius: var(--border-radius);
    transition: all var(--transition-speed) var(--transition-smooth);
    border: 1px solid transparent;
}
.btn--primary {
    background-color: var(--color-primary);
    color: var(--color-text);
}
.btn--primary:hover {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
}
.btn--secondary {
    background-color: transparent;
    border-color: var(--color-border);
    color: var(--color-text);
}
.btn--secondary:hover {
    border-color: var(--color-secondary);
    color: var(--color-secondary);
}
.btn--brass {
    background-color: var(--color-secondary);
    color: var(--color-bg);
    font-weight: 600;
}
.btn--brass:hover {
    background-color: var(--color-secondary-hover);
}
.btn--full {
    width: 100%;
}
.btn--sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
}

/* Tech Cards */
.card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    transition: border-color var(--transition-speed) var(--transition-smooth),
                transform var(--transition-speed) var(--transition-smooth);
}
.card:hover {
    border-color: var(--color-secondary);
    transform: translateY(-2px);
}
.card__icon {
    font-size: 1.5rem;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
    display: inline-block;
}
.card__title {
    margin-bottom: var(--spacing-xs);
    font-size: 1.25rem;
    color: var(--color-text);
}
.card__desc {
    color: var(--color-muted);
    font-size: 0.875rem;
    line-height: 1.5;
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-md);
}
.form-group label {
    display: block;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: var(--spacing-xxs);
}
.form-control {
    width: 100%;
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    padding: 0.75rem var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: border-color var(--transition-speed) ease;
}
.form-control:focus {
    outline: none;
    border-color: var(--color-secondary);
}
.form-error {
    color: var(--color-danger);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    margin-top: var(--spacing-xxs);
    display: none;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 2px 6px;
    font-size: 0.7rem;
    font-family: var(--font-mono);
    font-weight: 600;
    text-transform: uppercase;
    border-radius: var(--border-radius-sm);
    background-color: var(--color-border);
    color: var(--color-text);
}
.badge--popular {
    background-color: var(--color-secondary);
    color: var(--color-bg);
}

/* Testimonials Carousel (Swiper customization) */
.swiper-container {
    width: 100%;
    padding-bottom: var(--spacing-xl) !important;
}
.swiper-slide {
    height: auto;
}
.testimonial-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.testimonial-card__quote {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    font-style: italic;
}
.testimonial-card__author {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}
.testimonial-card__author-info h4 {
    font-size: 0.9rem;
    margin-bottom: 2px;
}
.testimonial-card__author-info p {
    font-size: 0.75rem;
    color: var(--color-muted);
    font-family: var(--font-mono);
}
.testimonial-card__stars {
    color: var(--color-secondary);
    font-size: 0.8rem;
    margin-bottom: var(--spacing-xs);
}

.swiper-pagination-bullet {
    background: var(--color-muted) !important;
    opacity: 0.4;
}
.swiper-pagination-bullet-active {
    background: var(--color-secondary) !important;
    opacity: 1 !important;
}

/* Floating Actions */
.whatsapp-float {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    background-color: #25D366;
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--shadow-lg);
    z-index: 999;
    transition: transform var(--transition-speed) ease;
}
.whatsapp-float:hover {
    transform: scale(1.1);
}

.back-to-top {
    position: fixed;
    bottom: calc(var(--spacing-lg) + 65px);
    right: var(--spacing-lg);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    cursor: pointer;
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-speed) ease;
}
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}
.back-to-top:hover {
    border-color: var(--color-secondary);
    color: var(--color-secondary);
}

/* 7. LAYOUT COMPONENTS */

/* Navigation Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    border-bottom: 1px solid transparent;
    transition: background-color var(--transition-speed) ease,
                border-color var(--transition-speed) ease,
                box-shadow var(--transition-speed) ease;
}
.header--scrolled {
    background-color: rgba(6, 8, 20, 0.95);
    backdrop-filter: blur(10px);
    border-bottom-color: var(--color-border);
    box-shadow: var(--shadow-md);
}
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}
.logo {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}
.logo__symbol {
    color: var(--color-secondary);
}
.logo__studio {
    color: var(--color-text);
}
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}
.nav-link {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-muted);
    transition: color var(--transition-speed) ease;
    text-transform: uppercase;
    font-family: var(--font-heading);
    letter-spacing: 0.05em;
}
.nav-link:hover,
.nav-link--active {
    color: var(--color-secondary);
}

/* Hamburger Menu Drawer */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 20px;
    height: 14px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}
.hamburger span {
    width: 100%;
    height: 2px;
    background-color: var(--color-text);
    transition: all 0.3s ease;
}
.hamburger--active span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}
.hamburger--active span:nth-child(2) {
    opacity: 0;
}
.hamburger--active span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

.mobile-drawer {
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    height: 100vh;
    background-color: var(--color-surface);
    border-left: 1px solid var(--color-border);
    padding: 100px var(--spacing-lg) var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    z-index: 999;
    transition: right 0.3s ease-in-out;
}
.mobile-drawer.open {
    right: 0;
}
.mobile-drawer .nav-link {
    font-size: 1.1rem;
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--color-border);
}

/* Footer styling */
.footer {
    background-color: var(--color-bg);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}
.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xxl);
}
.footer__info p {
    color: var(--color-muted);
    font-size: 0.875rem;
    margin-top: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    max-width: 300px;
}
.footer__socials {
    display: flex;
    gap: var(--spacing-sm);
}
.footer__social-link {
    width: 32px;
    height: 32px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-muted);
    font-size: 0.85rem;
    transition: all var(--transition-speed) ease;
}
.footer__social-link:hover {
    border-color: var(--color-secondary);
    color: var(--color-secondary);
}
.footer__title {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
}
.footer__links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}
.footer__links a {
    font-size: 0.875rem;
    color: var(--color-muted);
    transition: color var(--transition-speed) ease;
}
.footer__links a:hover {
    color: var(--color-text);
}
.footer__contact-item {
    font-size: 0.875rem;
    color: var(--color-muted);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
}
.footer__contact-item i {
    color: var(--color-secondary);
    margin-top: 4px;
}
.footer__bottom {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}
.footer__copy {
    font-size: 0.75rem;
    color: var(--color-muted);
    font-family: var(--font-mono);
}
.footer__legal-links {
    display: flex;
    gap: var(--spacing-md);
}
.footer__legal-links a {
    font-size: 0.75rem;
    color: var(--color-muted);
    font-family: var(--font-mono);
}
.footer__legal-links a:hover {
    color: var(--color-text);
}

/* 8. PAGE-SPECIFIC STYLES */

/* Main Hero (Full Viewport) */
.hero {
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    position: relative;
    border-bottom: 1px solid var(--color-border);
    overflow: hidden;
}
/* Blueprint grid backdrop effect */
.hero__grid-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: 40px 40px;
    background-image: 
        linear-gradient(to right, rgba(30, 41, 59, 0.15) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(30, 41, 59, 0.15) 1px, transparent 1px);
    pointer-events: none;
    z-index: 1;
}
.hero__radial-glow {
    position: absolute;
    top: 30%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(13, 148, 136, 0.05) 0%, transparent 70%);
    pointer-events: none;
    z-index: 1;
}
.hero__content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}
.hero__h1 {
    font-size: 3.25rem;
    line-height: 1.15;
    margin-bottom: var(--spacing-md);
}
.hero__sub {
    font-size: 1.125rem;
    color: var(--color-muted);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}
.hero__actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
}
.hero__scroll {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-muted);
    font-size: 1.25rem;
    animation: bounce 2s infinite;
    z-index: 2;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translate(-50%, 0); }
    40% { transform: translate(-50%, -10px); }
    60% { transform: translate(-50%, -5px); }
}

/* Page Banner (Mini-Hero) */
.page-banner {
    padding: 120px 0 60px;
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: relative;
    overflow: hidden;
}
.page-banner__grid-bg {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-size: 30px 30px;
    background-image: 
        linear-gradient(to right, rgba(30, 41, 59, 0.1) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(30, 41, 59, 0.1) 1px, transparent 1px);
    pointer-events: none;
}
.page-banner__title {
    font-size: 2.25rem;
    margin-bottom: var(--spacing-xs);
}
.breadcrumbs {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-muted);
    text-transform: uppercase;
}
.breadcrumbs a {
    transition: color var(--transition-speed) ease;
}
.breadcrumbs a:hover {
    color: var(--color-secondary);
}

/* Stat Counter Widget */
.stats-bar {
    border-bottom: 1px solid var(--color-border);
    background-color: var(--color-bg);
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}
.stat-item {
    padding: var(--spacing-lg) var(--spacing-md);
    text-align: center;
    border-right: 1px solid var(--color-border);
}
.stat-item:last-child {
    border-right: none;
}
.stat-item__num {
    font-family: var(--font-mono);
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--color-secondary);
    line-height: 1.1;
    margin-bottom: var(--spacing-xxs);
}
.stat-item__label {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Split Layout Section */
.split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}
.split-layout__visual {
    border: 1px solid var(--color-border);
    background-color: var(--color-surface);
    padding: var(--spacing-xl);
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 350px;
}
.split-layout__tech-box {
    border: 1px solid var(--color-border);
    background-color: var(--color-bg);
    padding: var(--spacing-md);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-muted);
    border-radius: var(--border-radius-sm);
    line-height: 1.5;
}
.split-layout__tech-line {
    border-bottom: 1px dashed var(--color-border);
    margin: var(--spacing-xs) 0;
}
.split-layout__check-list {
    margin-top: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}
.split-layout__check-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    font-size: 0.95rem;
}
.split-layout__check-item i {
    color: var(--color-primary);
    margin-top: 4px;
}

/* Service Details List */
.service-detail-card {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
}
.service-detail-card:hover {
    border-color: var(--color-secondary);
}
.service-detail-card__features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}
.service-feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.85rem;
    color: var(--color-muted);
}
.service-feature-item i {
    color: var(--color-secondary);
}

/* Timeline Components */
.timeline {
    position: relative;
    max-width: 800px;
    margin: var(--spacing-xl) auto 0;
    padding-left: var(--spacing-lg);
}
.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 7px;
    width: 2px;
    height: 100%;
    background-color: var(--color-border);
}
.timeline-item {
    position: relative;
    padding-bottom: var(--spacing-xl);
}
.timeline-item:last-child {
    padding-bottom: 0;
}
.timeline-node {
    position: absolute;
    left: -21px;
    top: 6px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--color-bg);
    border: 2px solid var(--color-secondary);
    z-index: 2;
}
.timeline-item:hover .timeline-node {
    background-color: var(--color-secondary);
}
.timeline-content {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
}
.timeline-step {
    font-family: var(--font-mono);
    color: var(--color-secondary);
    font-size: 0.75rem;
    text-transform: uppercase;
    margin-bottom: var(--spacing-xxs);
}
.timeline-title {
    font-size: 1.15rem;
    margin-bottom: var(--spacing-xs);
}
.timeline-desc {
    color: var(--color-muted);
    font-size: 0.875rem;
}

/* FAQ Accordion */
.faq-accordion {
    max-width: 800px;
    margin: var(--spacing-xl) auto 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}
.faq-item {
    border: 1px solid var(--color-border);
    background-color: var(--color-surface);
    border-radius: var(--border-radius);
    overflow: hidden;
}
.faq-header {
    width: 100%;
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
    background: transparent;
    color: var(--color-text);
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 500;
}
.faq-icon {
    font-size: 0.8rem;
    transition: transform var(--transition-speed) ease;
    color: var(--color-muted);
}
.faq-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-speed) var(--transition-smooth);
}
.faq-content {
    padding: 0 var(--spacing-md) var(--spacing-md) var(--spacing-md);
    color: var(--color-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}
.faq-item--active {
    border-color: var(--color-secondary);
}
.faq-item--active .faq-icon {
    transform: rotate(180deg);
    color: var(--color-secondary);
}

/* Pricing Section Toggle & Cards */
.billing-toggle-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
}
.billing-label {
    font-size: 0.85rem;
    font-family: var(--font-mono);
    color: var(--color-muted);
    text-transform: uppercase;
}
.billing-label--active {
    color: var(--color-text);
}
.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}
.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}
.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--color-border);
    transition: .3s;
    border-radius: 24px;
}
.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 4px;
    bottom: 4px;
    background-color: var(--color-text);
    transition: .3s;
    border-radius: 50%;
}
input:checked + .slider {
    background-color: var(--color-primary);
}
input:checked + .slider:before {
    transform: translateX(20px);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}
.pricing-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl) var(--spacing-lg);
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: border-color var(--transition-speed) ease;
}
.pricing-card--popular {
    border-color: var(--color-secondary);
}
.pricing-card__badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-lg);
}
.pricing-card__name {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: var(--spacing-sm);
}
.pricing-card__price {
    font-family: var(--font-mono);
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: baseline;
}
.pricing-card__price-sub {
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--color-muted);
}
.pricing-card__features {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}
.pricing-feature {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
    font-size: 0.85rem;
}
.pricing-feature--excluded {
    color: var(--color-muted);
}
.pricing-feature i {
    margin-top: 4px;
}
.pricing-feature i.fa-check {
    color: var(--color-primary);
}
.pricing-feature i.fa-xmark {
    color: var(--color-danger);
}

/* Pricing Matrix Table */
.matrix-container {
    overflow-x: auto;
    margin-top: var(--spacing-xxl);
}
.matrix-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 700px;
    font-size: 0.875rem;
    border: 1px solid var(--color-border);
}
.matrix-table th, .matrix-table td {
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    text-align: left;
}
.matrix-table th {
    background-color: var(--color-surface);
    font-family: var(--font-mono);
    text-transform: uppercase;
    font-size: 0.8rem;
    color: var(--color-secondary);
}
.matrix-table tr:hover {
    background-color: rgba(255, 255, 255, 0.02);
}
.matrix-table td:first-child {
    font-weight: 500;
    color: var(--color-text);
}
.matrix-table td:not(:first-child) {
    text-align: center;
}
.matrix-table i.fa-check {
    color: var(--color-primary);
}
.matrix-table i.fa-xmark {
    color: var(--color-danger);
}

/* Technical Onboarding Portal Layout (checkout) */
.portal-layout {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-xl);
}
.portal-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius);
}
.portal-title {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    color: var(--color-secondary);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.summary-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    padding: var(--spacing-xs) 0;
    border-bottom: 1px dashed var(--color-border);
}
.summary-row--total {
    border-bottom: none;
    border-top: 1px solid var(--color-border);
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-md);
    font-size: 1.15rem;
    font-weight: 700;
}
.summary-features {
    margin-top: var(--spacing-md);
    font-size: 0.8rem;
    color: var(--color-muted);
}
.summary-features li {
    margin-bottom: var(--spacing-xxs);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}
.summary-features i {
    color: var(--color-primary);
}

/* Contact Page Grid */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-xl);
}
.contact-info-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}
.info-card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}
.info-card__icon {
    font-size: 1.25rem;
    color: var(--color-secondary);
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.info-card__title {
    font-size: 0.8rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: 4px;
}
.info-card__content {
    font-size: 0.9rem;
    color: var(--color-text);
}
.map-container {
    height: 350px;
    border: 1px solid var(--color-border);
    background-color: var(--color-surface);
    margin-top: var(--spacing-xl);
}

/* Legal Page Layout */
.legal-layout {
    max-width: 800px;
    margin: 0 auto;
}
.legal-meta {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
}
.legal-content h3 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    font-size: 1.2rem;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-xxs);
}
.legal-content p, .legal-content ul {
    color: var(--color-muted);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}
.legal-content ul {
    list-style: square;
    padding-left: var(--spacing-lg);
}
.legal-content li {
    margin-bottom: var(--spacing-xxs);
}

/* 9. ANIMATIONS & KEYFRAMES */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
.fade-in-up {
    animation: fadeIn 0.6s var(--transition-smooth) forwards;
}

/* 10. MEDIA QUERIES (Mobile-first) */

/* Small Devices (Landscape Phones, 576px and up) */
@media (min-width: 576px) {
    h1 { font-size: 2.75rem; }
    .hero__h1 { font-size: 3.5rem; }
}

/* Medium Devices (Tablets, 768px and up) */
@media (min-width: 768px) {
    h1 { font-size: 3rem; }
    h2 { font-size: 2.25rem; }
    .hero__h1 { font-size: 4rem; }
    
    .stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .service-detail-card {
        grid-template-columns: 2fr 1fr;
        gap: var(--spacing-xl);
    }
}

/* Large Devices (Desktops, 992px and up) */
@media (max-width: 991px) {
    .nav-menu {
        display: none; /* Hide standard nav */
    }
    .hamburger {
        display: flex; /* Show Hamburger */
    }
    .footer__grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-lg);
    }
    .split-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 450px;
        margin-left: auto;
        margin-right: auto;
    }
    .portal-layout {
        grid-template-columns: 1fr;
    }
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

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

/* Extra Large Devices (Large Desktops, 1200px and up) */
@media (min-width: 1200px) {
    .container {
        padding: 0;
    }
}