/* ==========================================================================
   SDMS Brand Guidelines Variables
   Primary Backdrop (Orderly Blue): #0A0D15
   Core Network Glow (Active Intelligence): #00D2FF
   Text & Highlights (Dependable Structure): #C0C0C0
   Chaos Transition (Unstructured Data Elements): #333333
   ========================================================================== */

:root {
    --bg-primary: #0A0D15;
    --bg-secondary: #121623;
    --accent-cyan: #00D2FF;
    --accent-glow: rgba(0, 210, 255, 0.4);
    --text-silver: #C0C0C0;
    --text-white: #FFFFFF;
    --text-dark: #333333;
    
    --glass-bg: rgba(18, 22, 35, 0.6);
    --glass-border: rgba(192, 192, 192, 0.1);
    
    --font-heading: 'Inter', sans-serif;
    --font-body: 'Roboto', sans-serif;
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--bg-primary);
    color: var(--text-silver);
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-white);
    font-weight: 600;
    margin-bottom: 1rem;
}

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

a:hover {
    color: var(--text-white);
    text-shadow: 0 0 8px var(--accent-glow);
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-padding {
    padding: 100px 0;
}

.dark-bg {
    background-color: var(--bg-secondary);
}

.highlight {
    color: var(--accent-cyan);
}

.glow-text {
    text-shadow: 0 0 20px var(--accent-glow);
}

.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mt-4 { margin-top: 1.5rem; }
.w-100 { width: 100%; }

/* ==========================================================================
   Glassmorphism Utilities
   ========================================================================== */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    transition: var(--transition-normal);
}

.glass-nav {
    background: rgba(10, 13, 21, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--glass-border);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition-normal);
}

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px 0 rgba(0, 210, 255, 0.15);
    border-color: rgba(0, 210, 255, 0.3);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 8px;
    font-family: var(--font-heading);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-normal);
    border: none;
    font-size: 1rem;
}

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

.btn.primary:hover, .glow-btn:hover {
    background: var(--text-white);
    color: var(--bg-primary);
    box-shadow: 0 0 20px var(--accent-glow);
}

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

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

/* ==========================================================================
   Navigation
   ========================================================================== */
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-img {
    height: 80px;
    width: auto;
}

.logo-text h2 {
    margin: 0;
    font-size: 1.5rem;
    letter-spacing: 1px;
    line-height: 1;
}

.logo-text p {
    margin: 0;
    font-size: 0.7rem;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 2px;
}

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

.nav-links a {
    color: var(--text-silver);
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-cyan);
    transition: var(--transition-normal);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-links a.active {
    color: var(--text-white);
}

.mobile-menu {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-white);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
}

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

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.6;
}

.hero-bg .overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(to bottom, rgba(10, 13, 21, 0.3) 0%, rgba(10, 13, 21, 1) 100%);
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    color: var(--text-silver);
    max-width: 600px;
}

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

/* ==========================================================================
   Section Headers
   ========================================================================== */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--text-white);
}

.divider {
    height: 3px;
    width: 60px;
    background: var(--accent-cyan);
    margin: 1rem auto;
    border-radius: 2px;
    box-shadow: 0 0 10px var(--accent-glow);
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h3 {
    font-size: 1.8rem;
    color: var(--text-white);
}

.about-text p {
    margin-bottom: 1.5rem;
}

.about .stats {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
    padding: 1.5rem;
}

.stat-item h4 {
    font-size: 1.5rem;
    margin: 0.5rem 0 0.2rem 0;
}

.stat-item p {
    font-size: 0.85rem;
    margin: 0;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 16px;
    border: 1px solid var(--glass-border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

/* ==========================================================================
   Strategy Section
   ========================================================================== */
.strategy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.strategy-card {
    text-align: center;
}

.strategy-card h4 {
    font-size: 1.4rem;
    color: var(--text-white);
}

.strategy-card p {
    font-size: 0.95rem;
    color: var(--text-silver);
}

.strategy-img {
    height: 80px;
    width: 80px;
    object-fit: cover;
    border-radius: 50%;
    margin: 0 auto;
    border: 2px solid var(--accent-cyan);
    box-shadow: 0 0 15px var(--accent-glow);
}

/* ==========================================================================
   Solutions / Core Offerings
   ========================================================================== */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.solution-card {
    padding: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.solution-img {
    height: 200px;
    width: 100%;
    overflow: hidden;
    position: relative;
    border-bottom: 1px solid var(--glass-border);
}

.solution-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.empty-img-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    font-size: 4rem;
    color: var(--text-dark);
}

.solution-content {
    padding: 2rem;
    flex-grow: 1;
    position: relative;
}

.icon-wrapper {
    position: absolute;
    top: -24px;
    right: 2rem;
    width: 48px;
    height: 48px;
    background: var(--bg-primary);
    border: 1px solid var(--accent-cyan);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-cyan);
    font-size: 1.2rem;
    box-shadow: 0 0 15px var(--accent-glow);
}

.feature-list {
    margin-top: 1.5rem;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.feature-list i {
    color: var(--accent-cyan);
    font-size: 0.8rem;
}

/* ==========================================================================
   Use Cases
   ========================================================================== */
.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.use-case-card {
    padding: 2rem;
}

.use-case-img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid var(--glass-border);
}

.use-case-card .subtitle {
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--text-white);
    font-size: 0.9rem;
    margin-top: -0.5rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ==========================================================================
   Contact
   ========================================================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.icon-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(0, 210, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-cyan);
    flex-shrink: 0;
}

.form-group {
    margin-bottom: 1.5rem;
}

input, textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--text-dark);
    border-radius: 8px;
    color: var(--text-white);
    font-family: var(--font-body);
    transition: var(--transition-fast);
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: 0 0 10px rgba(0, 210, 255, 0.2);
    background: rgba(0, 0, 0, 0.4);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background: #05070a;
    padding: 4rem 0 2rem 0;
    border-top: 1px solid var(--text-dark);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-logo {
    height: 40px;
    margin-bottom: 1rem;
    opacity: 0.8;
}

.footer-brand p {
    max-width: 300px;
    font-size: 0.9rem;
}

.footer h4 {
    margin-bottom: 1.5rem;
    color: var(--text-white);
}

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

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
}

.social-icon:hover {
    background: var(--accent-cyan);
    color: var(--bg-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.85rem;
}

/* ==========================================================================
   Animations (Intersection Observer Classes)
   ========================================================================== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible,
.fade-in-up.visible,
.fade-in-left.visible,
.fade-in-right.visible {
    opacity: 1;
    transform: translate(0);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 992px) {
    .hero h1 { font-size: 3rem; }
    .about-grid, .contact-grid, .footer-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: absolute;
        top: 80px;
        left: -100%;
        width: 100%;
        background: var(--glass-bg);
        backdrop-filter: blur(20px);
        flex-direction: column;
        text-align: center;
        padding: 2rem 0;
        transition: var(--transition-normal);
        border-bottom: 1px solid var(--glass-border);
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .lang-switcher {
        margin-left: auto;
        margin-right: 15px;
    }
    
    .hero h1 { font-size: 2.5rem; }
    .section-padding { padding: 60px 0; }
}
/* Language Switcher */
.lang-switcher {
    margin-right: 20px;
}
.lang-select {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-light);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 5px 10px;
    border-radius: 20px;
    font-family: var(--font-secondary);
    font-weight: 500;
    cursor: pointer;
    outline: none;
    transition: all 0.3s ease;
}
.lang-select:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--primary-color);
}
.lang-select option {
    background: var(--bg-dark);
    color: var(--text-light);
}