:root {
    /* Colors - Refined Professional Cyber Palette */
    --bg-primary: #050505;
    --bg-secondary: #0f1110;
    --bg-tertiary: #1a1c1b;

    --accent-primary: #00ff41;
    /* Keep the iconic terminal green */
    --accent-dim: rgba(0, 255, 65, 0.1);
    --accent-highlight: #4dff7e;

    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #666;

    /* Typography - Clean & Modern */
    --font-heading: 'Fira Code', monospace;
    --font-body: 'Inter', sans-serif;

    /* Spacing & Layout */
    --section-spacing: 8rem;
    --container-width: 1200px;

    /* Animation */
    --transition-smooth: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
}

/* Scroll Behavior */
html {
    /* fallback */
    scroll-behavior: smooth;
    /* Custom Scrollbar */
    scrollbar-width: thin;
    scrollbar-color: var(--accent-primary) var(--bg-primary);
}

/* Custom Scrollbar for Webkit */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 3px;
    box-shadow: 0 0 10px var(--accent-primary);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-highlight);
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.7;
    overflow-x: hidden;
    /* Sophisticated dark gradient */
    background: radial-gradient(circle at 50% 0%, #1a2c20 0%, var(--bg-primary) 60%);
}

h1,
h2,
h3,
h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

h1 {
    font-size: 4rem;
    letter-spacing: -2px;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    position: relative;
    display: inline-block;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--accent-primary);
}

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

/* Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: var(--section-spacing) 0;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--accent-primary);
    color: #000;
    font-family: var(--font-heading);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: none;
    position: relative;
    overflow: hidden;
    z-index: 1;
    transition: var(--transition-smooth);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: #fff;
    z-index: -1;
    transition: var(--transition-smooth);
}

.btn:hover::before {
    width: 100%;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 255, 65, 0.3);
}

.btn-outline {
    display: inline-block;
    padding: 1rem 2.5rem;
    border: 1px solid var(--accent-primary);
    color: var(--accent-primary);
    font-family: var(--font-heading);
    font-weight: 700;
    text-transform: uppercase;
    background: transparent;
    transition: var(--transition-smooth);
}

.btn-outline:hover {
    background: var(--accent-dim);
    box-shadow: 0 0 15px var(--accent-dim);
}

/* Navigation */
header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1rem 0;
    z-index: 1000;
    transition: var(--transition-smooth);
    background: rgba(5, 5, 5, 0.8);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(0, 255, 65, 0.1);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

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

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

.logo img {
    filter: drop-shadow(0 0 5px rgba(0, 255, 65, 0.3));
    transition: var(--transition-smooth);
}

.logo:hover img {
    filter: drop-shadow(0 0 10px rgba(0, 255, 65, 0.6));
    transform: scale(1.05);
}

.nav-links {
    display: flex;
    gap: 3rem;
    list-style: none;
    align-items: center;
}

.nav-links li {
    position: relative;
}

.nav-links a {
    font-size: 0.95rem;
    font-family: var(--font-heading);
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 0.5rem 0;
    transition: var(--transition-smooth);
    letter-spacing: 1px;
}

/* Bracket Hover Effect */
.nav-links a::before,
.nav-links a::after {
    display: inline-block;
    opacity: 0;
    transition: transform 0.3s, opacity 0.2s;
    color: var(--accent-primary);
}

.nav-links a::before {
    content: '[';
    margin-right: 5px;
    transform: translateX(10px);
}

.nav-links a::after {
    content: ']';
    margin-left: 5px;
    transform: translateX(-10px);
}

.nav-links a:hover::before,
.nav-links a:hover::after,
.nav-links a.active::before,
.nav-links a.active::after {
    opacity: 1;
    transform: translateX(0);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text-primary);
    text-shadow: 0 0 10px rgba(0, 255, 65, 0.4);
}

/* No underline for this style */
/*.nav-links a::after { content: none; }*/

/* Mobile Menu */
.menu-toggle {
    display: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

#matrix-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.15;
    /* Subtler */
    z-index: -1;
}

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

.hero-subtitle {
    color: var(--accent-primary);
    font-family: var(--font-heading);
    margin-bottom: 1.5rem;
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--accent-dim);
    border-radius: 4px;
}

.hero h1 span {
    display: block;
    color: transparent;
    -webkit-text-stroke: 1px rgba(255, 255, 255, 0.3);
}

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

.hero-btns {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 5rem;
    align-items: center;
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.feature-list li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    font-family: var(--font-heading);
    font-size: 1rem;
}

.feature-list i {
    color: var(--accent-primary);
}

.terminal-window {
    background: #000;
    border-radius: 8px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    border: 1px solid #333;
    overflow: hidden;
    transform: perspective(1000px) rotateY(-5deg);
    transition: var(--transition-smooth);
}

.terminal-window:hover {
    transform: perspective(1000px) rotateY(0deg);
}

.terminal-header {
    background: #151515;
    padding: 10px 15px;
    display: flex;
    gap: 8px;
}

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

.red {
    background: #ff5f56;
}

.yellow {
    background: #ffbd2e;
}

.green {
    background: #27c93f;
}

.terminal-body {
    padding: 2rem;
    font-family: var(--font-heading);
    font-size: 0.9rem;
    color: #ccc;
}

.terminal-body span.cmd {
    color: var(--accent-primary);
    margin-right: 10px;
}

/* Cards Grid (Events & Speakers) */
.events-section {
    background: var(--bg-secondary);
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 2.5rem;
    border-radius: 0;
    /* Professional sharp edges or minor radius */
    transition: var(--transition-smooth);
    position: relative;
}

.card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--accent-primary);
}

.card-icon {
    font-size: 2rem;
    color: var(--accent-primary);
    margin-bottom: 1.5rem;
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Speaker Specifics */
.speaker-card {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
}

.speaker-img {
    width: 120px;
    height: 120px;
    margin: 0 auto 1.5rem;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--accent-primary);
    box-shadow: 0 0 15px rgba(0, 255, 65, 0.2);
    display: block;
}

.linkedin-btn-card {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: auto;
    padding: 0.5rem 1rem;
    background: transparent;
    border: 1px solid var(--accent-primary);
    color: var(--accent-primary);
    font-family: var(--font-heading);
    font-size: 0.85rem;
    text-transform: uppercase;
    transition: var(--transition-smooth);
    border-radius: 4px;
}

.linkedin-btn-card:hover {
    background: var(--accent-primary);
    color: #000;
    box-shadow: 0 0 10px rgba(0, 255, 65, 0.4);
}

/* Footer */
footer {
    background: #050505;
    border-top: 1px solid rgba(0, 255, 65, 0.1);
    font-size: 0.9rem;
    position: relative;
    overflow: hidden;
}

.footer-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 4rem 2rem;
    display: grid;
    grid-template-columns: 1.2fr 0.6fr 1.2fr;
    gap: 3rem;
    align-items: start;
}

.footer-socials {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Contact Form Styles (Refined) */
.footer-contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.footer-input {
    background: transparent;
    border: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    padding: 0.8rem 0;
    color: #fff;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    border-radius: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.footer-input::placeholder {
    color: rgba(255, 255, 255, 0.3);
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 1px;
}

.footer-input:focus {
    outline: none;
    border-bottom-color: var(--accent-primary);
    background: linear-gradient(to right, rgba(0, 255, 65, 0.05), transparent);
    padding-left: 1rem;
}

.footer-btn {
    background: transparent;
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
    padding: 1rem;
    margin-top: 0.5rem;
    font-family: var(--font-heading);
    font-weight: bold;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 2px;
    position: relative;
    overflow: hidden;
}

.footer-btn::before {
    content: '>> ';
    opacity: 0;
    transition: opacity 0.3s;
}

.footer-btn:hover {
    background: var(--accent-primary);
    color: #000;
    box-shadow: 0 0 20px rgba(0, 255, 65, 0.3);
}

.footer-btn:hover::before {
    opacity: 1;
}

@media (max-width: 900px) {
    .footer-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }

    .footer-col {
        justify-self: center !important;
        /* Force center on mobile */
    }

    .footer-desc {
        margin: 0 auto 2rem;
    }
}

/* =========================================
   ANIMATION & PRELOADER
   ========================================= */

/* Preloader */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: #000;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: opacity 1.2s cubic-bezier(0.19, 1, 0.22, 1), transform 1.2s cubic-bezier(0.19, 1, 0.22, 1);
}

/* Subtle Scan line */
#preloader::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent 50%, rgba(0, 255, 65, 0.02) 51%, transparent 51%);
    background-size: 100% 4px;
    pointer-events: none;
}

.loader-text {
    font-family: var(--font-heading);
    color: var(--text-primary);
    font-size: 0.9rem;
    letter-spacing: 4px;
    opacity: 0.8;
    margin-bottom: 20px;
    text-transform: uppercase;
    font-weight: 300;
}

.loader-bar {
    width: 150px;
    height: 2px;
    background: rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.loader-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 0;
    background: var(--accent-primary);
    animation: loadBar 1.5s cubic-bezier(0.65, 0, 0.35, 1) forwards;
    box-shadow: 0 0 10px var(--accent-primary);
}

@keyframes loadBar {
    0% {
        width: 0;
    }

    50% {
        width: 40%;
    }

    100% {
        width: 100%;
    }
}

/* Exit Animation: Slide Up Curtain */
body.loaded #preloader {
    transform: translateY(-100%);
    pointer-events: none;
}

/* Hero Staggered Reveal - Ultra Smooth */
.hero-content>* {
    opacity: 0;
    transform: translateY(40px);
    transition: all 1s cubic-bezier(0.16, 1, 0.3, 1);
}

body.loaded .hero-content .hero-subtitle {
    transition-delay: 0.6s;
}

body.loaded .hero-content h1 {
    transition-delay: 0.75s;
    transition-duration: 1.2s;
    /* Slower, more majestic */
}

body.loaded .hero-content p {
    transition-delay: 0.9s;
}

body.loaded .hero-content>* {
    opacity: 1;
    transform: translateY(0);
}

/* SCROLL ANIMATION CLASSES */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

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

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

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

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(5, 5, 5, 0.95);
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
        flex-direction: column;
        padding: 2rem;
        text-align: center;
        border-bottom: 1px solid var(--accent-primary);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
    }

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

    .menu-toggle {
        display: block;
    }


}

/* =========================================
   NEW SECTIONS: SCHEDULE & SPONSORS
   ========================================= */

/* Schedule */
.schedule-container {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 2rem;
}

.schedule-item {
    display: flex;
    gap: 2rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-smooth);
}

.schedule-item:last-child {
    border-bottom: none;
}

.schedule-item:hover {
    background: rgba(0, 255, 65, 0.05);
    padding-left: 1rem;
    border-color: var(--accent-primary);
}

.time {
    font-family: var(--font-heading);
    color: var(--accent-primary);
    font-size: 1.2rem;
    font-weight: bold;
    min-width: 80px;
}

.details h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

/* Sponsors */
.sponsors-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 3rem;
    margin-top: 2rem;
}

.sponsor-logo {
    width: 200px;
    height: 100px;
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    /* No border or background, just the logo */
}

.sponsor-logo:hover {
    transform: scale(1.1);
    filter: drop-shadow(0 0 10px rgba(0, 255, 65, 0.4));
}

/* Center Text Utility */
.center-text {
    text-align: center;
}

.center-h2 {
    margin-left: auto;
    margin-right: auto;
    display: table;
}

/* Registration / Pricing */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.pricing-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 2.5rem;
    text-align: center;
    transition: var(--transition-smooth);
}

.pricing-card.highlight {
    border-color: var(--accent-primary);
    background: rgba(0, 255, 65, 0.02);
    transform: scale(1.05);
    z-index: 2;
}

.pricing-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.pricing-card .price {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--accent-primary);
    margin-bottom: 2rem;
    font-family: var(--font-heading);
}

.pricing-card ul {
    list-style: none;
    margin-bottom: 2.5rem;
    color: var(--text-secondary);
}

.pricing-card ul li {
    margin-bottom: 0.8rem;
}

.pricing-card:hover {
    transform: translateY(-10px);
}

.pricing-card.highlight:hover {
    transform: translateY(-10px) scale(1.05);
}

/* FAQ Accordion */
.accordion {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.accordion-item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.accordion-button {
    width: 100%;
    padding: 1.5rem 0;
    background: transparent;
    border: none;
    text-align: left;
    color: var(--text-primary);
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition-smooth);
}

.accordion-button:hover {
    color: var(--accent-primary);
}

.accordion-button::after {
    content: '\f078';
    /* FontAwesome Chevron Down */
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 0.9rem;
    transition: transform 0.3s ease;
}

.accordion-button.active::after {
    transform: rotate(180deg);
    color: var(--accent-primary);
}

.accordion-panel {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.accordion-content {
    padding-bottom: 1.5rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

@media (max-width: 768px) {
    .pricing-card.highlight {
        transform: scale(1);
    }
}

/* Footer Copyright */
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 1rem 0;
    text-align: center;
    background: #000;
}

.copyright {
    color: var(--text-muted);
    font-size: 0.75rem;
    letter-spacing: 1px;
    opacity: 0.6;
}

/* --- GET STARTED BUTTON (Custom) --- */

.cssbuttons-io-button {

    background: var(--accent-primary);

    color: #000;

    font-family: var(--font-heading);

    padding: 0.35em;

    padding-left: 1.2em;

    font-size: 17px;

    font-weight: 700;

    border-radius: 0.9em;

    border: none;

    letter-spacing: 0.05em;

    display: inline-flex;

    align-items: center;

    box-shadow: inset 0 0 1.6em -0.6em rgba(0, 0, 0, 0.3);

    overflow: hidden;

    position: relative;

    height: 2.8em;

    padding-right: 3.3em;

    cursor: pointer;

    text-transform: uppercase;

    text-decoration: none;

    margin-top: 2rem;

    transition: var(--transition-smooth);

}



.cssbuttons-io-button .icon {

    background: #050505;

    margin-left: 1em;

    position: absolute;

    display: flex;

    align-items: center;

    justify-content: center;

    height: 2.2em;

    width: 2.2em;

    border-radius: 0.7em;

    box-shadow: 0.1em 0.1em 0.6em 0.2em rgba(0, 0, 0, 0.2);

    right: 0.3em;

    transition: all 0.3s;

}



.cssbuttons-io-button:hover .icon {

    width: calc(100% - 0.6em);

}



.cssbuttons-io-button .icon svg {

    width: 1.1em;

    transition: transform 0.3s;

    color: var(--accent-primary);

}



.cssbuttons-io-button:hover .icon svg {

    transform: translateX(0.1em);

}



.cssbuttons-io-button:active .icon {

    transform: scale(0.95);

}