* {
    box-sizing: border-box;
}

body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    font-family: sans-serif;
    background: #0f0f0f;
    color: #ffffff;

    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

/* 🧠 Background Layer (canvas for animation) */
canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

/* 📦 Main Container */
.container {
    position: relative;
    z-index: 1;

    display: flex;
    flex-direction: column;
    align-items: center;

    width: 90%;
    max-width: 420px;

    text-align: center;

    padding: 20px;
}

/* 🐶 Title */
h1 {
    margin-bottom: 20px;
    font-weight: 600;
}

/* 🐕 Logo */
.logo {
    width: 240px;
    max-width: 80%;
    margin-bottom: 20px;
    filter: drop-shadow(0 0 15px #00ffcc);
}

/* 🔘 Main Button */
.button {
    padding: 12px 30px;
    background: #00ffcc;
    color: #000;

    border: none;
    border-radius: 10px;

    cursor: pointer;
    font-size: 1rem;

    width: 100%;
    max-width: 220px;

    margin-bottom: 20px;

    transition: 0.2s ease;
}

.button:hover {
    background: #00ffaa;
    transform: scale(1.02);
}

/* 🧾 Login Form */
#loginForm {
    display: none;
    flex-direction: column;

    width: 100%;

    background: rgba(0,0,0,0.75);

    padding: 20px;
    border-radius: 12px;

    box-shadow: 0 0 15px #00ffcc;
}

/* ✏️ Inputs */
#loginForm input {
    margin-bottom: 15px;
    padding: 12px;

    border: none;
    border-radius: 6px;

    background: #111;
    color: #fff;

    font-family: monospace;
}

#loginForm input::placeholder {
    color: #888;
}

/* 🔘 Submit Button */
#loginForm button {
    padding: 12px;

    border: none;
    border-radius: 6px;

    background: #00ffcc;
    cursor: pointer;

    transition: 0.2s ease;
}

#loginForm button:hover {
    background: #00ffaa;
}

/* ❌ Error Message */
.error {
    color: #ff3b3b;
    height: 20px;
    margin-bottom: 10px;
    visibility: hidden;
}

/* 📱 Responsive */
@media (max-width: 500px) {

    h1 {
        font-size: 1.4rem;
    }

    .logo {
        width: 170px;
    }

    #loginForm {
        padding: 15px;
    }
}