/* ==========================================================================
   ATiRAD Mechatronics — Modern industrial landing page
   ========================================================================== */

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-dark: #0a0a0f;
    --bg-section: #111118;
    --bg-card: #16161f;
    --bg-card-hover: #1c1c28;
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.15);

    --accent: #01adef;
    --accent-hover: #33c4f5;
    --accent-glow: rgba(1, 173, 239, 0.25);

    --text-primary: #f5f5f7;
    --text-secondary: #a0a0b0;
    --text-muted: #6b6b7b;

    --nav-height: 72px;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    --transition: 0.25s ease;

    --font-ltr: 'Inter', 'Noto Sans', system-ui, sans-serif;
    --font-armenian: 'Noto Sans Armenian', 'Inter', sans-serif;
    --font-farsi: 'Vazirmatn', sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-ltr);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.65;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

body.lang-fa {
    font-family: var(--font-farsi);
    font-size: 17px;
    line-height: 1.75;
}

body.lang-hy {
    font-family: var(--font-armenian);
}

body.lang-ru {
    font-family: var(--font-ltr);
}

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

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

a:hover {
    color: var(--accent-hover);
}

.container {
    max-width: 1200px;
    margin-inline: auto;
    padding-inline: 24px;
}

.text-accent {
    color: var(--accent);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 999px;
    font-weight: 600;
    font-size: 0.95rem;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
    font-family: inherit;
}

.btn-sm {
    padding: 0.55rem 1.1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.05rem;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--accent-glow);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--border-strong);
}

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

.btn-outline-light {
    background: transparent;
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.35);
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: #fff;
    color: #fff;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    inset-inline: 0;
    z-index: 1000;
    height: var(--nav-height);
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    transition: background var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin-inline: auto;
    padding-inline: 24px;
    height: 100%;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-logo,
.footer-logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    flex-shrink: 0;
}

.logo-img,
.footer-logo-img {
    height: 44px;
    width: auto;
    max-width: 180px;
    object-fit: contain;
}

.logo-img-rtl,
.footer-logo-rtl {
    max-width: 200px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-inline: auto;
}

.nav-menu a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    text-decoration: none;
    transition: color var(--transition);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

.lang-switcher {
    display: flex;
    gap: 0.15rem;
    padding: 0.2rem;
    background: var(--bg-card);
    border-radius: 999px;
    border: 1px solid var(--border);
}

.lang-btn {
    padding: 0.3rem 0.55rem;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.7rem;
    font-weight: 600;
    border-radius: 999px;
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
}

.lang-btn:hover {
    color: var(--text-primary);
}

.lang-btn.active {
    background: var(--accent);
    color: #fff;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    margin-inline-start: auto;
}

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

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Hero */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--nav-height);
    background:
        linear-gradient(135deg, rgba(10, 10, 15, 0.92) 0%, rgba(8, 7, 60, 0.75) 100%),
        url('images/stock/circuit-board-04.jpg') center/cover no-repeat;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(1, 173, 239, 0.12) 0%, transparent 60%);
    pointer-events: none;
}

.hero-container {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin-inline: auto;
    padding: 4rem 24px;
}

.hero-content {
    max-width: 720px;
}

.hero-badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    border: 1px solid var(--accent);
    border-radius: 999px;
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.25rem;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 560px;
    margin-bottom: 2rem;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

/* Stats bar */
.stats-bar {
    background: var(--bg-section);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 3rem 0;
}

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

.stat-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.stat-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(1, 173, 239, 0.1);
    border-radius: var(--radius);
    color: var(--accent);
}

.stat-icon svg {
    width: 24px;
    height: 24px;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Sections */
.section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin-inline: auto;
    margin-bottom: 3.5rem;
}

.section-label {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: var(--accent);
    margin-bottom: 0.75rem;
}

.section-header h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.section-cta {
    text-align: center;
    margin-top: 3rem;
}

/* Services */
.services {
    background: var(--bg-dark);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.service-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition);
}

.service-card-featured {
    border-color: rgba(1, 173, 239, 0.35);
}

.service-card-image {
    height: 140px;
    overflow: hidden;
}

.service-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.service-card:hover .service-card-image img {
    transform: scale(1.05);
}

.service-card-body {
    padding: 1.5rem;
}

.service-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(1, 173, 239, 0.3);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.service-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.service-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.65;
}

.card-cta {
    margin-top: 1.25rem;
}

/* Portfolio */
.portfolio {
    background: var(--bg-section);
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: 220px;
    gap: 1rem;
}

.portfolio-item {
    position: relative;
    display: block;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    color: inherit;
    text-decoration: none;
}

.portfolio-item:hover {
    color: inherit;
}

.portfolio-featured {
    grid-column: span 2;
    grid-row: span 2;
    min-height: 100%;
}

.portfolio-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.portfolio-item:hover img {
    transform: scale(1.05);
}

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.85) 0%, transparent 60%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1.25rem;
}

.portfolio-tag {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--accent);
    margin-bottom: 0.35rem;
}

.portfolio-overlay h3 {
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
}

/* About */
.about {
    background: var(--bg-dark);
}

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

.about-content .section-label {
    text-align: start;
}

.about-content h2 {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    margin-bottom: 1.25rem;
}

.about-content p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.75;
}

.about-highlights {
    list-style: none;
    margin-top: 1.5rem;
}

.about-highlights li {
    position: relative;
    padding-inline-start: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
}

.about-highlights li::before {
    content: '';
    position: absolute;
    inset-inline-start: 0;
    top: 0.55em;
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
}

.about-visual {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
}

.about-visual img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

/* CTA Banner */
.cta-banner {
    position: relative;
    padding: 6rem 0;
    background:
        linear-gradient(rgba(10, 10, 15, 0.88), rgba(10, 10, 15, 0.88)),
        url('images/stock/pexels-robot-arm-06.jpg') center/cover no-repeat;
    text-align: center;
}

.cta-content h2 {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-content p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
    max-width: 520px;
    margin-inline: auto;
}

/* Contact */
.contact {
    background: var(--bg-section);
}

.contact-layout {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 2rem;
    align-items: start;
}

.chatbot-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 2rem;
    align-items: center;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
}

.chatbot-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.chatbot-avatar {
    width: 120px;
    height: auto;
}

.chatbot-brand {
    width: 140px;
    height: auto;
    border-radius: var(--radius);
}

.chatbot-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

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

.chatbot-features {
    list-style: none;
    margin-bottom: 1.5rem;
}

.chatbot-features li {
    position: relative;
    padding-inline-start: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.chatbot-features li::before {
    content: '';
    position: absolute;
    inset-inline-start: 0;
    top: 0.55em;
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
}

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

.contact-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    padding: 1.25rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.contact-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(1, 173, 239, 0.1);
    border-radius: var(--radius);
    color: var(--accent);
}

.contact-icon svg {
    width: 20px;
    height: 20px;
}

.contact-item h4 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-item a,
.contact-item p {
    color: var(--text-primary);
    font-size: 1rem;
}

[dir="rtl"] .chatbot-features li {
    padding-inline-start: 0;
    padding-inline-end: 1.25rem;
}

[dir="rtl"] .chatbot-features li::before {
    inset-inline-start: auto;
    inset-inline-end: 0;
}

/* Footer */
.footer {
    background: var(--bg-dark);
    border-top: 1px solid var(--border);
    padding: 4rem 0 1.5rem;
}

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

.footer-logo-link {
    margin-bottom: 1rem;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.65;
    max-width: 320px;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

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

.footer-contact p {
    color: var(--text-secondary);
    margin-bottom: 0.35rem;
}

.enamad-container {
    text-align: center;
    margin: 1.5rem 0;
}

.footer-bottom {
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* RTL overrides */
[dir="rtl"] .about-highlights li {
    padding-inline-start: 0;
    padding-inline-end: 1.5rem;
}

[dir="rtl"] .about-highlights li::before {
    inset-inline-start: auto;
    inset-inline-end: 0;
}

/* Responsive */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .chatbot-card {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .chatbot-visual {
        flex-direction: row;
        justify-content: center;
    }

    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: auto;
    }

    .portfolio-featured {
        grid-column: span 2;
        grid-row: span 1;
        min-height: 280px;
    }

    .portfolio-item {
        min-height: 200px;
    }

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu,
    .nav-actions .btn {
        display: none;
    }

    .nav-actions .lang-switcher {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .nav-menu.mobile-open {
        display: flex;
        position: fixed;
        top: var(--nav-height);
        inset-inline: 0;
        flex-direction: column;
        background: var(--bg-section);
        padding: 1.5rem;
        gap: 1rem;
        border-bottom: 1px solid var(--border);
        z-index: 999;
    }

    .nav-actions.mobile-open {
        display: flex;
        position: fixed;
        top: calc(var(--nav-height) + 180px);
        inset-inline: 0;
        flex-direction: column;
        padding: 1rem 1.5rem 1.5rem;
        background: var(--bg-section);
        gap: 0.75rem;
        z-index: 999;
    }

    .nav-actions.mobile-open .lang-switcher,
    .nav-actions.mobile-open .btn {
        display: flex;
        width: 100%;
    }

    .nav-actions.mobile-open .btn {
        justify-content: center;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .portfolio-grid {
        grid-template-columns: 1fr;
    }

    .portfolio-featured {
        grid-column: span 1;
        min-height: 240px;
    }

    .contact-layout {
        grid-template-columns: 1fr;
    }

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

    .hero-buttons {
        flex-direction: column;
    }

    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .section {
        padding: 4rem 0;
    }

    .container {
        padding-inline: 16px;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}