body {
    font-family: 'Inter', 'Segoe UI', sans-serif;
    margin: 0;
    background-color: #FFFFFF;
    color: #7A8C90;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    text-shadow: none;
}

.container {
    background: #FFFFFF;
    padding: 40px;
    border-radius: 8px;
    border: 1px solid #E8E8E8;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    text-align: center;
    width: 90%;
    max-width: 600px;
}


.logo-svg {
    margin-bottom: 20px;
    animation: none;
    filter: none;
}

h1 {
    font-size: 2.5em;
    color: #ffffff;
    text-shadow: none;
    font-weight: 600;
    margin-bottom: 10px;
}

.tech-text {
    font-size: 1.2em;
    line-height: 1.6;
    color: #a0a0a0;
}

.hidden {
    display: none;
}

select, input[type="password"], input[type="text"] {
    font-family: 'Inter', 'Segoe UI', sans-serif;
    padding: 12px;
    width: calc(100% - 24px);
    margin-top: 15px;
    border: 1px solid #333;
    border-radius: 4px;
    background-color: #2d2d2d;
    color: #ffffff;
    box-shadow: none;
    outline: none;
}

select:focus, input:focus {
    border-color: #6c5ce7;
}

button {
    font-family: 'Inter', 'Segoe UI', sans-serif;
    margin-top: 20px;
    padding: 12px 25px;
    border: none;
    border-radius: 6px;
    background-color: #6c5ce7;
    color: #ffffff;
    font-size: 1em;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s, box-shadow 0.3s;
    text-shadow: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

button:hover {
    background-color: #5b4cc4;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

#send-btn {
    background: #1e1e1e;
    color: #ececec;
    border: 1px solid #333;
    width: 36px;
    height: 36px;
    min-width: 36px;
    padding: 0;
    margin-top: 0;
    border-radius: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: none;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}

#send-btn:hover {
    background: #2a2a2a;
    background-color: #2a2a2a;
    border-color: #555;
    color: #fff;
    box-shadow: none;
}

#send-btn:active {
    background: #333;
    transform: scale(0.96);
}

#send-btn.is-stop {
    border-color: #c0392b;
    color: #e74c3c;
}

#send-btn.is-stop:hover {
    background: rgba(231, 76, 60, 0.12);
    background-color: rgba(231, 76, 60, 0.12);
    border-color: #e74c3c;
    color: #ff6b6b;
    box-shadow: none;
}

#quit-btn {
    background-color: #2d2d2d;
    border: 1px solid #ff4d4d;
    color: #ff4d4d;
    box-shadow: none;
}

#quit-btn:hover {
    background-color: rgba(255, 77, 77, 0.1);
    box-shadow: none;
}