/* ---------- BASE ---------- */
body {
    margin: 0;
    font-family: 'Orbitron', Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: #0a0a0a;
    overflow: hidden;
    color: #fff;
    position: relative;
}

/* ---------- CONTAINER ---------- */
.container {
    position: relative;
    z-index: 2;
    max-width: 400px;
    width: 90%;
    padding: 40px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 0 40px rgba(0, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    text-align: center;
}

/* ---------- BACKGROUND ---------- */
.background {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: linear-gradient(270deg, #0ff, #f0f, #ff0, #0ff);
    background-size: 800% 800%;
    animation: gradientShift 60s ease-in-out infinite;
    z-index: 0;
    filter: blur(100px);
    opacity: 0.25;
}

/* ---------- FLOATING PARTICLES ---------- */
.particles {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    background: radial-gradient(circle, rgba(0,255,255,0.15) 1px, transparent 1px) repeat;
    background-size: 50px 50px;
    animation: moveParticles 120s linear infinite;
    z-index: 0;
}

@keyframes moveParticles {
    0% { background-position: 0 0; }
    100% { background-position: 1000px 1000px; }
}

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

/* ---------- TITLES ---------- */
h1, h2 {
    font-family: 'Orbitron', sans-serif;
    text-align: center;
    text-transform: uppercase;
    animation: flicker 3s infinite;
}

h1 {
    margin-bottom: 20px;
    font-size: 2.5rem;
    color: #00ffff;
    text-shadow: 0 0 10px #00ffff, 0 0 20px #00ffff;
}

h2 {
    font-weight: 700;
    font-size: 2rem;
    color: #00ffff;
    margin-bottom: 30px;
    text-shadow: 0 0 5px #00ffff, 0 0 10px #00ffff, 0 0 20px #ff00ff, 0 0 40px #ff00ff;
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

h2:hover {
    color: #ff00ff;
    text-shadow: 0 0 10px #ff00ff, 0 0 20px #ff00ff, 0 0 30px #00ffff, 0 0 50px #00ffff;
}

/* ---------- NAV ---------- */
nav {
    margin-bottom: 30px;
}

nav a {
    margin: 0 10px;
    text-decoration: none;
    color: #00ffff;
    font-weight: 500;
    transition: 0.3s;
}

nav a:hover {
    color: #ff00ff;
    text-shadow: 0 0 10px #ff00ff, 0 0 20px #ff00ff;
}

/* ---------- CARDS ---------- */
.card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(15px);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 0 50px rgba(0, 255, 255, 0.2);
    margin: 40px auto;
    max-width: 400px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 0 70px rgba(255, 0, 255, 0.3);
}

/* ---------- FORMS ---------- */
form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* ---------- INPUTS ---------- */
form input {
    width: 100%;
    padding: 15px;
    font-size: 1rem;
    font-family: 'Orbitron', sans-serif;
    color: #00ffff;
    background: rgba(255, 255, 255, 0.05);
    border: none;
    border-radius: 12px;
    outline: none;
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.3);
    transition: all 0.3s ease;
    caret-color: #ff00ff;
    position: relative;
}

/* Placeholder */
form input::placeholder {
    color: #80ffff;
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

form input:focus::placeholder {
    color: #ff80ff;
    text-shadow: 0 0 5px #ff00ff;
}

/* Focus glow */
form input:focus {
    box-shadow: 0 0 20px #00ffff, 0 0 40px #ff00ff inset;
    background: rgba(0, 255, 255, 0.1);
}

/* Animated underline */
form input::after {
    content: '';
    display: block;
    height: 2px;
    width: 0;
    background: #ff00ff;
    transition: width 0.4s ease;
}

form input:focus::after {
    width: 100%;
}

/* ---------- BUTTONS ---------- */
form button, #loadProfile, #logout {
    width: 100%;
    padding: 15px;
    font-size: 1rem;
    font-family: 'Orbitron', sans-serif;
    font-weight: bold;
    border: none;
    border-radius: 12px;
    background: linear-gradient(135deg, #00ffff, #ff00ff);
    color: #000;
    cursor: pointer;
    margin-top: 15px;
    box-shadow: 0 0 20px #00ffff, 0 0 40px #ff00ff;
    transition: all 0.4s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    animation: pulse 2s infinite alternate, flicker 3s infinite;
}

/* Hover & active effects */
form button:hover, #loadProfile:hover, #logout:hover {
    background: linear-gradient(135deg, #ff00ff, #00ffff);
    box-shadow: 0 0 40px #ff00ff, 0 0 60px #00ffff;
    transform: scale(1.08) rotate(-1deg);
    color: #fff;
}

form button:active, #loadProfile:active, #logout:active {
    box-shadow: 0 0 60px #ff00ff, 0 0 80px #00ffff inset;
    transform: scale(0.98);
}

/* ---------- PULSE & FLICKER ---------- */
@keyframes pulse {
    0% { box-shadow: 0 0 20px #00ffff, 0 0 40px #ff00ff; }
    50% { box-shadow: 0 0 30px #00ffff, 0 0 60px #ff00ff; }
    100% { box-shadow: 0 0 20px #00ffff, 0 0 40px #ff00ff; }
}

@keyframes flicker {
    0%,19%,21%,23%,25%,54%,56%,100% {
        text-shadow: 0 0 5px #00ffff, 0 0 10px #00ffff, 0 0 20px #ff00ff;
    }
    20%,24%,55% {
        text-shadow: 0 0 2px #00ffff, 0 0 5px #00ffff, 0 0 10px #ff00ff;
    }
}

/* ---------- MESSAGE ---------- */
#message {
    margin-top: 10px;
    font-weight: bold;
    color: #ff0;
    text-shadow: 0 0 5px #ff0, 0 0 10px #ff0;
}