@import url('https://fonts.googleapis.com/css2?family=Archivo:wght@400;500;600&family=Chakra+Petch:wght@400;500;600;700&display=swap');

:root {
    /* -- Refined Industrial Palette -- */
    --color-bg-dark: #0F1215;
    /* Deep Matte Charcoal */
    --color-bg-panel: #1A1E23;
    /* Lighter Charcoal for cards */
    --color-bg-light: #F4F5F7;
    /* Concrete Grey */

    --color-primary: #FF5722;
    /* Safety Orange - Action */
    --color-secondary: #64748B;
    /* Steel Blue - Technical */
    --color-accent: #00E5FF;
    /* Cyan - Digital/Data */

    --color-text-main: #E2E8F0;
    /* Off-white for dark bg */
    --color-text-muted: #94A3B8;
    /* Muted steel */
    --color-text-dark: #1E293B;
    /* Dark text for light bg */

    --border-color: #334155;

    --font-display: 'Chakra Petch', sans-serif;
    /* Technical/Square */
    --font-body: 'Archivo', sans-serif;
    /* Sturdy/Legible */

    --spacing-container: 1280px;
    --border-radius-tech: 2px;
    /* Sharp corners */
}

/* --- Reset & Base --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 700;
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.2s ease;
}

ul {
    list-style: none;
}

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

/* --- Layout Utilities --- */
.container {
    max-width: var(--spacing-container);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 6rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.section-light {
    background-color: var(--color-bg-light);
    color: var(--color-text-dark);
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
}

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

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

/* Asymmetric Grids */
.grid-asymmetric-left {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    align-items: center;
}

.grid-asymmetric-right {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    align-items: center;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* --- Typography --- */
.display-text {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.section-title::before {
    content: '';
    display: block;
    width: 20px;
    height: 4px;
    background-color: var(--color-primary);
}

.lead {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    max-width: 65ch;
    margin-bottom: 2rem;
}

/* --- Components --- */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    font-family: var(--font-display);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border: 1px solid transparent;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
    box-shadow: 0 4px 0 rgba(0, 0, 0, 0.2);
}

.btn-primary::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transform: translateX(-100%);
    transition: 0.3s;
    z-index: -1;
}

.btn-primary:hover::after {
    transform: translateX(100%);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--color-text-main);
    color: var(--color-text-main);
}

.btn-outline:hover {
    background-color: white;
    color: var(--color-bg-dark);
}

/* Cards */
.tech-card {
    background-color: var(--color-bg-panel);
    border: 1px solid var(--border-color);
    padding: 2rem;
    position: relative;
    transition: 0.3s;
    height: 100%;
}

.tech-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: 0.3s;
}

.tech-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.tech-card:hover::before {
    transform: scaleX(1);
}

/* Comparison Tables */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-bg-panel);
    border: 1px solid var(--border-color);
}

.comparison-table th,
.comparison-table td {
    padding: 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
    background: rgba(0, 0, 0, 0.2);
    font-family: var(--font-display);
    color: var(--color-text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
}

.comparison-table td {
    font-size: 0.95rem;
}

.comparison-table tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.highlight-positive {
    color: var(--color-accent);
    font-weight: 700;
}

.highlight-negative {
    color: var(--color-text-muted);
    text-decoration: line-through;
    opacity: 0.7;
}

/* Accordion */
details.industrial-accordion {
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1rem;
    padding-bottom: 1rem;
}

details.industrial-accordion summary {
    cursor: pointer;
    font-family: var(--font-display);
    font-weight: 600;
    color: var(--color-text-main);
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
}

details.industrial-accordion summary::-webkit-details-marker {
    display: none;
}

details.industrial-accordion summary::after {
    content: '+';
    color: var(--color-primary);
    font-size: 1.5rem;
    line-height: 1;
}

details.industrial-accordion[open] summary::after {
    content: '-';
}

details.industrial-accordion p {
    color: var(--color-text-muted);
    margin-top: 1rem;
    padding-right: 2rem;
}

/* Vertical Timeline */
.timeline {
    position: relative;
    padding-left: 2rem;
    border-left: 2px solid var(--border-color);
}

.timeline-item {
    margin-bottom: 2.5rem;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -2.6rem;
    top: 0.5rem;
    width: 1rem;
    height: 1rem;
    background: var(--color-bg-dark);
    border: 2px solid var(--color-primary);
    border-radius: 50%;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

/* Navbar */
.navbar {
    height: 90px;
    background: rgba(15, 18, 21, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
}

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

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-family: var(--font-display);
    font-size: 0.9rem;
    text-transform: uppercase;
    font-weight: 500;
    color: var(--color-text-muted);
    letter-spacing: 0.05em;
    position: relative;
}

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

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
}

/* Language Toggle */
#langToggle {
    background: transparent;
    border: 1px solid var(--color-secondary);
    color: var(--color-secondary);
    padding: 0.2rem 0.6rem;
    font-family: var(--font-display);
    font-weight: 700;
    cursor: pointer;
    transition: 0.2s;
}

#langToggle:hover {
    background: var(--color-secondary);
    color: white;
}


/* --- Specific Components --- */

/* Hero */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
    position: relative;
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(15, 18, 21, 0.95) 0%, rgba(15, 18, 21, 0.7) 60%, rgba(15, 18, 21, 0.4) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
}

.hero-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(255, 87, 34, 0.1);
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
    font-family: var(--font-display);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
}

/* Stats Strip */
.stats-strip {
    background: var(--color-bg-panel);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 2rem 0;
}

.stat-item h3 {
    font-size: 2.5rem;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
}

.stat-item p {
    font-family: var(--font-display);
    text-transform: uppercase;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    letter-spacing: 0.1em;
}

/* Split Section */
.split-content .lead-tag {
    font-family: var(--font-display);
    color: var(--color-secondary);
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 1rem;
    display: block;
}

.technical-list li {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.03);
    border-left: 2px solid var(--color-secondary);
}

.tech-number {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.1);
    line-height: 1;
}

/* Footer */
.footer {
    background: #000;
    padding: 5rem 0 2rem;
    border-top: 4px solid var(--color-primary);
}

.footer-heading {
    color: white;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: var(--color-text-muted);
}

.footer-links a:hover {
    color: var(--color-primary);
    padding-left: 5px;
}

/* Mobile Menu */
.menu-toggle {
    display: none;
    /* Add media query logic as needed */
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: white;
}

@media (max-width: 900px) {

    .grid-2,
    .grid-3,
    .grid-4,
    .grid-asymmetric-left,
    .grid-asymmetric-right {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .menu-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--color-bg-dark);
        flex-direction: column;
        padding: 2rem;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-links.active {
        display: flex;
    }

    .display-text {
        font-size: 2.5rem;
    }
}