/* =========================================
   VARIABLES & SETUP
========================================= */
:root {
    /* Colors */
    --c-bg-base: #060913;
    --c-bg-surface: #0a0f1d;
    --c-bg-card: #101626;
    
    --c-cyan: #00e5ff;
    --c-cyan-hover: #00b3cc;
    --c-blue: #2962ff;
    
    --c-text-main: #f1f5f9;
    --c-text-muted: #94a3b8;
    
    --c-border: rgba(0, 229, 255, 0.15);
    --c-border-subtle: rgba(255, 255, 255, 0.05);
    
    /* Gradients */
    --g-primary: linear-gradient(135deg, var(--c-cyan) 0%, var(--c-blue) 100%);
    --g-text: linear-gradient(to right, #ffffff, var(--c-cyan));
    
    /* Typography */
    --f-heading: 'Space Grotesk', sans-serif;
    --f-body: 'Outfit', sans-serif;
    
    /* UI */
    --t-base: 0.3s ease;
    --glow: 0 0 15px rgba(0, 229, 255, 0.4);
    --glow-strong: 0 0 25px rgba(0, 229, 255, 0.6);
}

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

html {
    scroll-behavior: smooth;
}

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

/* =========================================
   TYPOGRAPHY & UTILITIES
========================================= */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--f-heading);
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

a {
    text-decoration: none;
    color: var(--c-cyan);
    transition: var(--t-base);
}

ul { list-style: none; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}
.container-medium { max-width: 800px; }

.section { padding: 6rem 0; }
.bg-surface { background-color: var(--c-bg-surface); }
.border-y { border-top: 1px solid var(--c-border-subtle); border-bottom: 1px solid var(--c-border-subtle); }
.border-cyan { border: 1px solid var(--c-border); }

.text-cyan { color: var(--c-cyan); }
.text-muted { color: var(--c-text-muted); }
.text-center { text-align: center; }
.font-light { font-weight: 300; }
.font-size-sm { font-size: 0.85rem; }

.text-gradient {
    background: var(--g-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }
.my-4 { margin-top: 2rem; margin-bottom: 2rem; }
.ml-3 { margin-left: 1rem; }
.w-100 { width: 100%; }

.mx-auto { margin-left: auto; margin-right: auto; }
.img-fluid { max-width: 100%; height: auto; display: block; }
.rounded-lg { border-radius: 12px; }

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

.grid-2-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
.grid-3-cols { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.grid-4-cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 2rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.gap-5 { gap: 4rem; }

.sub-heading {
    display: inline-block;
    color: var(--c-cyan);
    font-family: var(--f-heading);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 0.5rem;
}
.section-title { font-size: 2.5rem; }

/* =========================================
   BUTTONS
========================================= */
.btn {
    display: inline-flex;
    align-items: center;
    font-family: var(--f-heading);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.8rem 1.8rem;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--t-base);
    border: 1px solid transparent;
}
.btn-glow {
    background: var(--c-cyan);
    color: var(--c-bg-base);
    font-weight: 600;
}
.btn-glow:hover {
    background: #fff;
    box-shadow: var(--glow-strong);
}
.btn-outline-cyan {
    background: transparent;
    color: var(--c-cyan);
    border-color: var(--c-cyan);
}
.btn-outline-cyan:hover {
    background: var(--c-cyan);
    color: var(--c-bg-base);
    box-shadow: var(--glow);
}

/* =========================================
   BACKGROUND FX
========================================= */
.tech-bg-grid {
    position: fixed;
    top: 0; left: 0; width: 100vw; height: 100vh;
    background-image: 
        linear-gradient(rgba(0, 229, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 229, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -1;
    pointer-events: none;
}

/* =========================================
   NAVIGATION
========================================= */
.navbar {
    position: fixed;
    top: 0; left: 0; width: 100%;
    padding: 1.5rem 0;
    z-index: 1000;
    transition: var(--t-base);
    background: transparent;
}
.navbar.scrolled {
    padding: 1rem 0;
    background: rgba(6, 9, 19, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--c-border-subtle);
}
.logo { display: flex; align-items: center; gap: 0.5rem; font-size: 1.5rem; }
.logo-text { font-family: var(--f-heading); color: #fff; font-weight: 600; }
.nav-links { display: flex; align-items: center; gap: 2rem; }
.nav-item { font-size: 0.9rem; color: #fff; font-weight: 500; }
.nav-item:hover { color: var(--c-cyan); text-shadow: var(--glow); }

.mobile-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--c-cyan); cursor: pointer; }

/* Mobile Menu */
.mobile-menu {
    position: fixed; top: 0; right: -100%; width: 100%; max-width: 350px; height: 100vh;
    background: var(--c-bg-card); border-left: 1px solid var(--c-border); z-index: 1001;
    transition: var(--t-base); display: flex; align-items: center; justify-content: center;
}
.mobile-menu.active { right: 0; box-shadow: -10px 0 30px rgba(0,0,0,0.5); }
.mobile-menu-inner { padding: 3rem; width: 100%; display: flex; flex-direction: column; text-align: center; gap: 1.5rem; }
.close-mobile { position: absolute; top: 2rem; right: 2rem; background: none; border: none; color: #fff; font-size: 2rem; cursor: pointer; }
.mobile-nav-item { font-family: var(--f-heading); font-size: 1.25rem; color: #fff; }

/* =========================================
   HERO
========================================= */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; padding-top: 80px; overflow: hidden; }
.hero-glow-orb {
    position: absolute; top: -20%; right: -10%; width: 60vw; height: 60vw;
    background: radial-gradient(circle, rgba(0, 229, 255, 0.1) 0%, transparent 60%);
    border-radius: 50%; z-index: -1;
}

.badge-tech {
    display: inline-block; padding: 0.4rem 1rem;
    border: 1px solid var(--c-cyan);
    background: rgba(0, 229, 255, 0.05);
    color: var(--c-cyan);
    font-family: var(--f-heading); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 2px;
    margin-bottom: 1.5rem; border-radius: 4px;
}
.hero-title { font-size: clamp(3rem, 5vw, 4.5rem); margin-bottom: 1.5rem; }
.hero-desc { font-size: 1.15rem; color: var(--c-text-muted); margin-bottom: 2.5rem; max-width: 500px; }

.hero-meta { display: flex; gap: 2rem; margin-bottom: 3rem; }
.meta-item { display: flex; gap: 1rem; align-items: flex-start; }
.meta-item i { color: var(--c-cyan); font-size: 1.25rem; margin-top: 0.2rem; }
.meta-item strong { display: block; color: #fff; font-size: 0.95rem; }
.meta-item span { color: var(--c-text-muted); font-size: 0.85rem; }

/* Data Ring Visual (CSS Art) */
.hero-visual { display: flex; justify-content: center; }
.data-ring {
    position: relative; width: 350px; height: 350px;
    border: 1px solid rgba(0, 229, 255, 0.2); border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    box-shadow: inset 0 0 40px rgba(0, 229, 255, 0.05);
}
.data-ring::before {
    content: ''; position: absolute; width: 100%; height: 100%;
    border-radius: 50%; border-top: 2px solid var(--c-cyan); border-bottom: 2px solid var(--c-blue);
    animation: spin 8s linear infinite; filter: drop-shadow(0 0 5px var(--c-cyan));
}
.inner-ring {
    width: 250px; height: 250px; border: 1px dashed rgba(255,255,255,0.2); border-radius: 50%;
    animation: spin-reverse 15s linear infinite;
}
.core-node {
    position: absolute; width: 80px; height: 80px;
    background: var(--g-primary); border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 2rem; color: #fff; box-shadow: var(--glow-strong);
    animation: pulse 2s infinite alternate;
}

@keyframes spin { 100% { transform: rotate(360deg); } }
@keyframes spin-reverse { 100% { transform: rotate(-360deg); } }
@keyframes pulse { 0% { transform: scale(0.95); box-shadow: var(--glow); } 100% { transform: scale(1.05); box-shadow: var(--glow-strong); } }

/* =========================================
   CARDS & FEATURES
========================================= */
.tech-card {
    background: var(--c-bg-card);
    border: 1px solid var(--c-border-subtle);
    padding: 2.5rem; border-radius: 8px;
    transition: var(--t-base); position: relative; overflow: hidden;
}
.tech-card::after {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 2px;
    background: var(--g-primary); transform: scaleX(0); transform-origin: left; transition: var(--t-base);
}
.tech-card:hover { transform: translateY(-5px); border-color: rgba(0,229,255,0.2); background: rgba(16,22,38,0.8); }
.tech-card:hover::after { transform: scaleX(1); }

.tech-icon { font-size: 2rem; color: var(--c-cyan); margin-bottom: 1.5rem; text-shadow: var(--glow); }
.tech-card h3 { font-size: 1.3rem; margin-bottom: 0.8rem; color: #fff; }

/* =========================================
   SPEAKERS
========================================= */
.speaker-module {
    background: var(--c-bg-card);
    border: 1px solid var(--c-border-subtle);
    border-radius: 8px; overflow: hidden;
}
.speaker-img-box { position: relative; width: 100%; aspect-ratio: 1/1; overflow: hidden; }
.speaker-img-box img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(50%); transition: var(--t-base); }
.speaker-overlay {
    position: absolute; bottom: 0; left: 0; width: 100%; padding: 1rem;
    background: linear-gradient(to top, rgba(0,0,0,0.9), transparent);
    transform: translateY(100%); transition: var(--t-base); display: flex; justify-content: center;
}
.speaker-overlay a {
    width: 40px; height: 40px; background: rgba(0,229,255,0.2); border: 1px solid var(--c-cyan);
    display: flex; align-items: center; justify-content: center; color: #fff; border-radius: 50%;
}
.speaker-overlay a:hover { background: var(--c-cyan); box-shadow: var(--glow); }
.speaker-module:hover img { filter: grayscale(0%); transform: scale(1.05); }
.speaker-module:hover .speaker-overlay { transform: translateY(0); }

.speaker-details { padding: 1.5rem; text-align: center; }
.speaker-details h4 { color: #fff; font-size: 1.15rem; margin-bottom: 0.2rem; }
.speaker-details span { font-size: 0.85rem; font-family: var(--f-heading); letter-spacing: 1px; }

/* =========================================
   BENEFITS
========================================= */
.benefits-list li {
    display: flex; gap: 1.5rem; align-items: flex-start; margin-bottom: 1.5rem;
    padding-bottom: 1.5rem; border-bottom: 1px solid var(--c-border-subtle);
}
.benefits-list li:last-child { border-bottom: none; }
.benefits-list i { font-size: 1.2rem; margin-top: 0.2rem; }
.benefits-list h4 { color: #fff; font-size: 1.15rem; margin-bottom: 0.3rem; }

/* =========================================
   PARTNERS
========================================= */
.partners-grid {
    display: flex; flex-wrap: wrap; justify-content: center; gap: 3rem; align-items: center;
}
.partner-logo {
    font-family: var(--f-heading); font-size: 1.5rem; font-weight: 700;
    color: rgba(255,255,255,0.2); letter-spacing: 2px; transition: var(--t-base);
}
.partner-logo:hover { color: #fff; text-shadow: 0 0 10px rgba(255,255,255,0.3); }

/* =========================================
   FORM & FAQ
========================================= */
.glass-card {
    background: rgba(16, 22, 38, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid var(--c-border);
    padding: 3rem; border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5), inset 0 0 20px rgba(0, 229, 255, 0.05);
}
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; font-size: 0.85rem; color: var(--c-text-muted); margin-bottom: 0.5rem; text-transform: uppercase; letter-spacing: 1px; }
.form-control {
    width: 100%; padding: 1rem; background: rgba(0,0,0,0.3);
    border: 1px solid var(--c-border-subtle); color: #fff; font-family: var(--f-body);
    transition: var(--t-base); border-radius: 4px;
}
.form-control:focus { outline: none; border-color: var(--c-cyan); box-shadow: inset 0 0 10px rgba(0,229,255,0.1); }

.tech-accordion { margin-top: 2rem; }
.t-acc-item { border-bottom: 1px solid var(--c-border-subtle); }
.t-acc-header {
    padding: 1.5rem 0; font-family: var(--f-heading); font-size: 1.05rem;
    color: #fff; display: flex; justify-content: space-between; align-items: center; cursor: pointer; transition: var(--t-base);
}
.t-acc-header:hover { color: var(--c-cyan); }
.t-acc-header .icon { transition: transform 0.3s; color: var(--c-cyan); }
.t-acc-body { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; color: var(--c-text-muted); }
.t-acc-item.active .icon { transform: rotate(45deg); }
.t-acc-item.active .t-acc-body { max-height: 150px; padding-bottom: 1.5rem; }

/* =========================================
   FOOTER
========================================= */
.footer-links { display: flex; justify-content: center; gap: 2rem; }
.footer-links a { color: var(--c-text-muted); font-size: 0.9rem; }
.footer-links a:hover { color: var(--c-cyan); }
.social-links a { display: inline-flex; justify-content: center; align-items: center; width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--c-border-subtle); color: #fff; margin: 0 0.5rem; transition: var(--t-base); }
.social-links a:hover { border-color: var(--c-cyan); color: var(--c-cyan); box-shadow: var(--glow); }

/* =========================================
   MEDIA QUERIES
========================================= */
@media (max-width: 991px) {
    .nav-links { display: none; }
    .mobile-toggle { display: block; }
    .hero-container { grid-template-columns: 1fr; text-align: center; }
    .hero-meta { justify-content: center; }
    .hero-actions { justify-content: center; }
    .hero-glow-orb { top: 0; right: 0; width: 100vw; height: 100vw; }
    .grid-2-cols, .grid-3-cols { grid-template-columns: 1fr; }
    .benefits-visual { order: -1; }
    .flex-between { flex-direction: column; align-items: stretch; gap: 1.5rem; text-align: center; }
}
@media (max-width: 576px) {
    .hero-meta { flex-direction: column; gap: 1rem; align-items: center; }
    .meta-item { justify-content: center; text-align: center; }
    .glass-card { padding: 1.5rem; }
}