body, html {
    background: #171922;
    color: #bffcf9;
    font-family: 'Segoe UI', 'Arial', sans-serif;
    min-height: 100vh;
    margin: 0;
    padding: 0;
}

body.led-dark {
    background: #0e1018;
    color: #bffcf9;
}

h1, h2, h3, h4 {
    color: #63ffd4;
    text-shadow: 0 0 8px #1de9b6, 0 0 2px #63ffd4;
    letter-spacing: 1px;
}

a, button {
    background: linear-gradient(90deg, #22c1c3, #5bff94, #9e53ff);
    color: #171922;
    border: none;
    padding: 9px 16px;
    border-radius: 13px;
    margin: 6px 2px;
    text-decoration: none;
    font-weight: 600;
    box-shadow: 0 2px 16px #00ffea44, 0 0 2px #a08fff44;
    cursor: pointer;
    font-size: 1em;
    transition: filter .13s;
}
a:hover, button:hover {
    filter: brightness(1.18) drop-shadow(0 0 6px #00ffc2);
}

form, .panel {
    background: #23263b;
    border-radius: 18px;
    padding: 28px 28px 18px 28px;
    box-shadow: 0 8px 40px #00f9fc14, 0 1px 2px #0009;
    margin: 40px auto 24px auto;
    max-width: 450px;
}

form.login-form {
    max-width: 350px;
    margin-top: 110px;
}

input, textarea, select {
    background: #16181f;
    color: #bffcf9;
    border: 1.5px solid #2e8fff;
    border-radius: 7px;
    padding: 10px 8px;
    margin-bottom: 14px;
    width: 98%;
    font-size: 1em;
    box-shadow: 0 0 7px #45ffc344 inset;
    transition: border .14s, box-shadow .14s;
}
input:focus, textarea:focus, select:focus {
    border: 2px solid #67ffd6;
    box-shadow: 0 0 9px #67ffd655;
    outline: none;
}
input[type="checkbox"] {
    width: auto;
    margin-right: 6px;
    accent-color: #63ffd4;
}

label {
    font-weight: 500;
    color: #7bffe5;
    display: block;
    margin-top: 9px;
    margin-bottom: 1px;
    letter-spacing: .2px;
}

code {
    background: #191b2a;
    color: #ffccff;
    padding: 3px 8px;
    border-radius: 8px;
    box-shadow: 0 0 10px #9e53ff66;
    font-size: .96em;
    margin-top: 6px;
    display: inline-block;
}

ul {
    list-style: none;
    padding: 0;
}
ul li {
    background: #22243d;
    border-radius: 13px;
    margin: 10px 0;
    padding: 13px 16px;
    box-shadow: 0 2px 9px #00ffc233;
}

::-webkit-input-placeholder { color: #65ffd5b2; }
::-moz-placeholder          { color: #65ffd5b2; }
:-ms-input-placeholder      { color: #65ffd5b2; }
::placeholder              { color: #65ffd5b2; }