/* ==========================================
   OSTRINIUM TECHNOLOGIES - MAIN STYLESHEET
   Industrial/Technical Aesthetic
   ========================================== */

/* CSS Variables */
:root {
    /* Colors - Dark industrial palette with electric accents */
    --bg-primary: #0a0a0b;
    --bg-secondary: #111113;
    --bg-tertiary: #1a1a1d;
    --bg-card: #151518;
    
    --text-primary: #f0f0f2;
    --text-secondary: #a0a0a8;
    --text-muted: #606068;
    
    --accent-primary: #00d4aa;
    --accent-secondary: #00b894;
    --accent-glow: rgba(0, 212, 170, 0.15);
    
    --border-color: #2a2a30;
    --border-light: #3a3a42;
    
    /* Terminal colors */
    --term-red: #ff5f56;
    --term-yellow: #ffbd2e;
    --term-green: #27c93f;
    --term-purple: #bd93f9;
    --term-cyan: #8be9fd;
    --term-comment: #6272a4;
    
    /* Typography */
    --font-display: 'Space Grotesk', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Spacing */
    --section-padding: clamp(4rem, 10vw, 8rem);
    --container-max: 1200px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-display);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ==========================================
   NAVIGATION
   ========================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1rem 0;
    transition: all var(--transition-base);
    background: transparent;
}

.nav.scrolled {
    background: rgba(10, 10, 11, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--text-primary);
}

.logo-bracket {
    color: var(--accent-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-links a {
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.nav-cta {
    padding: 0.5rem 1.25rem;
    background: var(--accent-primary);
    color: var(--bg-primary) !important;
    border-radius: 4px;
    font-weight: 600;
}

.nav-cta:hover {
    background: var(--accent-secondary);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all var(--transition-fast);
}

/* ==========================================
   HERO SECTION
   ========================================== */
.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 4rem;
    padding: calc(var(--section-padding) + 4rem) 1.5rem var(--section-padding);
    max-width: var(--container-max);
    margin: 0 auto;
    position: relative;
}

.hero-bg {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    overflow: hidden;
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(0, 212, 170, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 170, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
}

.scan-line {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
    opacity: 0.3;
    animation: scan 8s linear infinite;
}

@keyframes scan {
    0% { top: 0; }
    100% { top: 100%; }
}

.hero-content {
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: var(--accent-primary);
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
}

.highlight {
    color: var(--accent-primary);
    position: relative;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin-bottom: 2rem;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-family: var(--font-display);
    font-size: 0.9375rem;
    font-weight: 600;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

.btn-primary:hover {
    background: var(--accent-secondary);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-light);
}

.btn-secondary:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.btn-full {
    width: 100%;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
    letter-spacing: 0.02em;
}

/* Terminal */
.hero-terminal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 
        0 0 0 1px var(--border-color),
        0 20px 50px rgba(0, 0, 0, 0.5);
}

.terminal-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.terminal-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.terminal-dot.red { background: var(--term-red); }
.terminal-dot.yellow { background: var(--term-yellow); }
.terminal-dot.green { background: var(--term-green); }

.terminal-title {
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.terminal-body {
    padding: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    line-height: 1.8;
}

.terminal-body p {
    margin-bottom: 0.25rem;
}

.prompt {
    color: var(--accent-primary);
}

.cmd {
    color: var(--term-cyan);
}

.comment {
    color: var(--term-comment);
}

.keyword {
    color: var(--term-purple);
}

.macro {
    color: var(--term-cyan);
}

.cursor {
    color: var(--accent-primary);
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

/* ==========================================
   SECTION COMMON STYLES
   ========================================== */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 4rem;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    color: var(--accent-primary);
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* ==========================================
   SERVICES SECTION
   ========================================== */
.services {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    transition: all var(--transition-base);
}

.service-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-4px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.service-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 1.5rem;
    color: var(--accent-primary);
}

.service-icon svg {
    width: 100%;
    height: 100%;
}

.service-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.service-card p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.25rem;
}

.service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.service-tags li {
    padding: 0.25rem 0.625rem;
    background: var(--bg-tertiary);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ==========================================
   PRODUCTS SECTION
   ========================================== */
.products {
    padding: var(--section-padding) 0;
}

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

.product-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    transition: all var(--transition-base);
}

.product-card:hover {
    border-color: var(--border-light);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.product-image {
    position: relative;
    height: 200px;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--border-color);
}

.product-placeholder {
    width: 120px;
    height: 100px;
    color: var(--accent-primary);
    opacity: 0.6;
}

.product-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.375rem 0.75rem;
    background: var(--accent-primary);
    color: var(--bg-primary);
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    border-radius: 4px;
    text-transform: uppercase;
}

.product-content {
    padding: 1.5rem;
}

.product-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.product-content > p {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.25rem;
}

.product-specs {
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 4px;
}

.product-specs li {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--text-secondary);
    padding: 0.25rem 0;
}

.product-specs strong {
    color: var(--text-muted);
}

.product-link {
    display: inline-flex;
    align-items: center;
    font-weight: 500;
    color: var(--accent-primary);
    transition: all var(--transition-fast);
}

.product-link:hover {
    color: var(--accent-secondary);
    gap: 0.5rem;
}

/* ==========================================
   ABOUT SECTION
   ========================================== */
.about {
    padding: var(--section-padding) 0;
    background: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-content .section-tag {
    display: block;
    margin-bottom: 1rem;
}

.about-content .section-title {
    text-align: left;
    margin-bottom: 1.5rem;
}

.about-lead {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.about-content p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.about-tech {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.about-tech h4 {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.tech-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.about-patents {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
}

.about-patents h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.patents-intro {
    font-size: 0.9375rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.patent-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.patent-list li {
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 4px;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.patent-id {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-primary);
    letter-spacing: 0.05em;
}

.patent-title {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ==========================================
   CONTACT SECTION
   ========================================== */
.contact {
    padding: var(--section-padding) 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info .section-tag {
    display: block;
    margin-bottom: 1rem;
}

.contact-info .section-title {
    text-align: left;
    margin-bottom: 1rem;
}

.contact-info > p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary);
}

.contact-item svg {
    width: 20px;
    height: 20px;
    color: var(--accent-primary);
    flex-shrink: 0;
}

.contact-item a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.contact-item a:hover {
    color: var(--accent-primary);
}

.contact-form-container {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.875rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: var(--font-display);
    font-size: 0.9375rem;
    color: var(--text-primary);
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23a0a0a8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
    padding: 3rem 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-brand {
    font-family: var(--font-mono);
    font-size: 1.125rem;
    font-weight: 700;
}

.footer-brand p {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.footer-location {
    margin-top: 0 !important;
}

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

.footer-links a {
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent-primary);
}

.footer-copy {
    width: 100%;
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    margin-top: 1rem;
}

.footer-copy p {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */
@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-terminal {
        max-width: 500px;
        margin: 0 auto;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .about-content .section-title {
        text-align: center;
    }
    
    .about-content .section-tag {
        text-align: center;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .contact-info .section-title,
    .contact-info .section-tag {
        text-align: center;
    }
    
    .contact-info > p {
        text-align: center;
    }
    
    .contact-details {
        align-items: center;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--bg-secondary);
        flex-direction: column;
        justify-content: center;
        gap: 2rem;
        padding: 2rem;
        border-left: 1px solid var(--border-color);
        transition: right var(--transition-base);
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .mobile-toggle {
        display: flex;
        z-index: 1001;
    }
    
    .mobile-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero {
        padding-top: 6rem;
        min-height: auto;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 2rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .terminal-body {
        font-size: 0.75rem;
        padding: 1rem;
    }
    
    .service-card {
        padding: 1.5rem;
    }
    
    .product-content {
        padding: 1.25rem;
    }
}