:root {
    --color-black: #000000;
    --color-white: #FFFFFF;
    --color-dark-grey: #1a1a1a;
    --color-light-grey: #cccccc;
    --font-heading: 'Orbitron', sans-serif;
    --font-body: 'Montserrat', sans-serif;
    --gradient-start: #8e44ad;
    --gradient-middle: #3498db;
    --gradient-end: #1abc9c;
    --gradient-text-size: 300%;
    --loading-text-color: #F0F0F0;
    --loading-text-glow: rgba(255, 255, 255, 0.7);
    --loading-bar-fill-start: #FFFFFF;
    --loading-bar-fill-end: #555555;
    --loading-bar-background: #333333;
    --loading-bar-border: rgba(255, 255, 255, 0.2);
    --gradient-black-grey-white: linear-gradient(to right, #000000, #555555, #FFFFFF, #000000);
}

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

html, body {
    height: 100%;
    width: 100%;
    overflow-x: hidden;
    font-family: var(--font-body);
    color: var(--color-white);
    background-color: var(--color-black);
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-black);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    z-index: 9999;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.8s ease-out, visibility 0.8s ease-out;
    will-change: opacity, transform;
}

#loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

#loading-starfield {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.7;
}

.loading-content {
    text-align: center;
    padding: 20px;
    position: relative;
    z-index: 1;
}

.loading-content h1 {
    font-family: var(--font-heading);
    font-size: clamp(1.5em, 5vw, 2.8em);
    line-height: 1.2;
    margin-bottom: 25px;
    letter-spacing: 2px;
    color: var(--loading-text-color);
    text-shadow: 0 0 12px var(--loading-text-glow);

}

.loading-bar-container {
    width: clamp(250px, 70vw, 600px);
    height: 15px;
    background-color: var(--loading-bar-background);
    border-radius: 5px;
    overflow: hidden;
    margin-top: 20px;
    border: 1px solid var(--loading-bar-border);
    box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.5);
}

.loading-bar {
    width: 0%;
    height: 100%;
    background: linear-gradient(to right, var(--loading-bar-fill-start), var(--loading-bar-fill-end));
    border-radius: 5px;
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.8), inset 0 0 5px rgba(255, 255, 255, 0.5);
    position: relative;
    overflow: hidden;
    will-change: width, background;
}

.loading-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.3);
    transform: skewX(-30deg);
    animation: loadingBarShine 2s infinite;
}

#starfield {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    opacity: 0.8;
}

.background-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background-image: url('assets/background.png');
    background-size: cover;
    background-position: center;
    opacity: 0.15;
    pointer-events: none;
    animation: backgroundPan 60s linear infinite;
    will-change: background-position;
}

body {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    position: relative;
    z-index: 0;
}

.top-nav {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    gap: 25px;
    z-index: 10;
}

.nav-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
    transition: background-color 0.3s ease, border-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
    will-change: background-color, border-color, transform, box-shadow;
}

.nav-icon:hover {
    background-color: rgba(255, 255, 255, 0.15);
    border-color: var(--color-white);
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5), 0 0 15px rgba(255, 255, 255, 0.4);
}

.nav-icon img {
    width: 60%;
    height: 60%;
    filter: invert(100%);
    transition: filter 0.3s ease;
}

.nav-icon:hover img {
    filter: invert(0) brightness(1.2) sepia(100%) saturate(500%) hue-rotate(180deg);
}

.main-header {
    text-align: center;
    padding: 60px 20px;
    margin-top: 80px;
    margin-bottom: 40px;
    animation: fadeInScale 1.5s ease-out forwards;
}

.main-header h1 {
    font-family: var(--font-heading);
    font-size: clamp(2.5em, 8vw, 3.5em);
    margin-bottom: 15px;
    letter-spacing: 2px;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
    display: inline-block;
}

.gradient-text {
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-middle), var(--gradient-end), var(--gradient-start));
    background-size: var(--gradient-text-size) 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: moveGradient 10s linear infinite;
}

.main-header p {
    font-size: clamp(1em, 2.5vw, 1.3em);
    color: var(--color-light-grey);
    max-width: 800px;
    margin: 0 auto;
}

.bot-showcase {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 40px;
    max-width: 1200px;
    width: 100%;
    margin-bottom: 60px;
    padding: 0 10px;
}

.bot-card {
    background-color: var(--color-dark-grey);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 100%;
    max-width: 450px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
    will-change: transform, box-shadow;
}

.bot-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.2);
}

.bot-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0) 70%);
    transform: rotate(45deg);
    transition: transform 0.5s ease-out;
    z-index: 0;
}

.bot-card:hover::before {
    transform: rotate(0deg);
}

.bot-card .bot-details {
    flex-grow: 1;
    z-index: 1;
}

.bot-card h2 {
    font-family: var(--font-heading);
    font-size: clamp(1.8em, 5vw, 2.5em);
    margin-bottom: 15px;
    color: var(--color-white);
    letter-spacing: 1px;
}

.bot-card p {
    font-size: clamp(0.9em, 2.2vw, 1.1em);
    line-height: 1.6;
    color: var(--color-light-grey);
    margin-bottom: 25px;
}

.bot-card .bot-logo {
    width: 100px;
    height: 100px;
    min-width: 100px;
    min-height: 100px;
    border-radius: 50%;
    background-color: var(--color-black);
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 25px;
    border: 2px solid var(--color-white);
    overflow: hidden;
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
    flex-shrink: 0;
    z-index: 1;
}

.bot-card .bot-logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    filter: brightness(1.1);
}

.button {
    display: inline-block;
    background-color: var(--color-white);
    color: var(--color-black);
    padding: 12px 25px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    font-size: clamp(0.9em, 2vw, 1.1em);
    letter-spacing: 0.5px;
    transition: background-color 0.4s ease, color 0.4s ease, transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94), box-shadow 0.4s ease, border-color 0.4s ease;
    border: 2px solid var(--color-white);
    position: relative;
    overflow: hidden;
    will-change: background-color, color, transform, box-shadow;
    white-space: nowrap;
}

.button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(255, 255, 255, 0.3) 0%, rgba(255, 255, 255, 0) 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 0;
}

.button:hover::before {
    opacity: 1;
}

.button:hover {
    background-image: var(--gradient-black-grey-white);
    background-size: 300% 100%;
    animation: moveButtonGradient 4s linear infinite;
    color: var(--color-black);
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
    border-color: var(--color-white);
}

.main-footer {
    margin-top: auto;
    padding: 30px 20px;
    text-align: center;
    color: var(--color-light-grey);
    font-size: 0.9em;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.3);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

@keyframes moveButtonGradient {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

@keyframes fadeInScale {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes backgroundPan {
    0% { background-position: 0% 0%; }
    25% { background-position: 100% 0%; }
    50% { background-position: 100% 100%; }
    75% { background-position: 0% 100%; }
    100% { background-position: 0% 0%; }
}

@keyframes moveGradient {
    0% { background-position: 0% 50%; }
    100% { background-position: var(--gradient-text-size) 50%; }
}

@keyframes neonGlow {
    0%, 100% { text-shadow: 0 0 5px var(--loading-text-glow), 0 0 15px var(--loading-text-glow), 0 0 25px var(--loading-text-glow); }
    50% { text-shadow: 0 0 10px var(--loading-text-glow), 0 0 20px var(--loading-text-glow), 0 0 30px var(--loading-text-glow), 0 0 40px var(--loading-text-glow); }
}

@keyframes loadingBarShine {
    0% { left: -100%; }
    50% { left: 100%; }
    100% { left: -100%; }
}

@media (min-width: 768px) {
    .top-nav {
        top: 30px;
        right: 30px;
        gap: 30px;
    }

    .nav-icon {
        width: 55px;
        height: 55px;
    }

    .main-header {
        margin-top: 100px;
        margin-bottom: 60px;
    }

    .bot-showcase {
        gap: 50px;
        padding: 0 20px;
    }

    .bot-card {
        flex-direction: row;
        text-align: left;
        gap: 30px;
        padding: 40px;
        max-width: 550px;
    }

    .bot-card-2 {
        flex-direction: row-reverse;
    }

    .bot-card .bot-logo {
        margin-bottom: 0;
        width: 120px;
        height: 120px;
        min-width: 120px;
        min-height: 120px;
    }

    .button {
        padding: 15px 30px;
    }
}

@media (min-width: 1024px) {
    .bot-showcase {
        gap: 60px;
    }

    .bot-card {
        max-width: 600px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 15px;
    }

    .top-nav {
        top: 15px;
        right: 15px;
        gap: 10px;
    }

    .nav-icon {
        width: 35px;
        height: 35px;
    }

    .main-header {
        margin-top: 50px;
        margin-bottom: 30px;
        padding: 40px 10px;
    }

    .loading-content h1 {
        font-size: 1.1em;
    }

    .loading-bar-container {
        width: 220px;
        height: 10px;
    }

    .bot-showcase {
        gap: 30px;
        padding: 0 5px;
    }

    .bot-card {
        padding: 25px;
    }

    .bot-card .bot-logo {
        width: 80px;
        height: 80px;
        min-width: 80px;
        min-height: 80px;
        margin-bottom: 15px;
    }

    .button {
        padding: 10px 20px;
        font-size: 0.85em;
    }
}