.login-stage {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    background: linear-gradient(120deg, rgba(0, 0, 0, 0.85), rgba(0, 0, 0, 0.4)),
        url('../src/de_dust2_cs2.png') center center / cover no-repeat fixed;
    color: white;
}

.login-card {
    width: min(700px, 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 32px;
    text-align: center;
    background: rgba(12, 12, 20, 0.65);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 28px;
    padding: clamp(2.5rem, 6vw, 3.75rem) clamp(1.75rem, 5vw, 3rem);
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(16px);
}

.login-text h2 {
    font-size: clamp(1.25rem, 2vw, 1.75rem);
    font-weight: 300;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.75);
}

.login-text h1 {
    margin: clamp(0.6rem, 2vw, 1rem) 0;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    text-transform: uppercase;
    line-height: 1;
    border-radius: 16px;
    overflow: hidden;
    transition: background 0.4s ease, color 0.4s ease;
}

.login-text h1 a {
    display: block;
    padding: clamp(0.4rem, 1vw, 0.75rem) clamp(0.6rem, 2vw, 1.1rem);
    text-decoration: none;
    color: inherit;
    background: transparent;
    transition: background 0.4s ease, color 0.4s ease;
}

.login-text h1:hover,
.login-text h1 a:hover,
.login-text h1 a:focus-visible {
    background: var(--main-color);
    color: white;
}

.login-text h3 {
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 300;
    color: rgba(255, 255, 255, 0.7);
}

.server-switch {
    width: 100%;
    display: grid;
    gap: 12px;
    text-align: left;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    padding: 18px 20px;
}

.server-switch__label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.8);
}

.server-switch__label svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
    opacity: 0.8;
}

.server-switch__helper {
    margin-top: -6px;
    width: 100%;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.65);
    letter-spacing: 0.04em;
}

.server-switch select {
    width: 100%;
    background: rgba(0, 0, 0, 0.4);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    padding: 12px 16px;
    font-size: 1rem;
    line-height: 1.4;
    cursor: pointer;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    appearance: none;
    background-image: linear-gradient(45deg, transparent 50%, rgba(255, 255, 255, 0.7) 50%),
        linear-gradient(135deg, rgba(255, 255, 255, 0.7) 50%, transparent 50%);
    background-position: calc(100% - 18px) calc(50% - 5px), calc(100% - 12px) calc(50% - 5px);
    background-size: 6px 6px;
    background-repeat: no-repeat;
}

.server-switch select:focus {
    outline: none;
    border-color: var(--main-color);
    box-shadow: 0 0 0 3px rgba(142, 160, 210, 0.25);
}

.server-switch .main-btn {
    margin-top: 8px;
    width: 100%;
}

.login-form {
    width: 100%;
    display: flex;
    justify-content: center;
}

.login-form .main-btn {
    width: 100%;
    margin-top: 0;
    font-size: 1.25rem;
    padding: 18px 26px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.login-form .main-btn[disabled] {
    background: rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.6);
    cursor: not-allowed;
}

.login-form .main-btn[disabled] svg {
    opacity: 0.55;
}

.login-form .main-btn svg {
    width: 22px;
    height: 22px;
}

@media (max-width: 480px) {
    .login-card {
        gap: 24px;
        border-radius: 20px;
        padding: 2.25rem 1.75rem;
    }

    .server-switch {
        padding: 16px;
    }

    .login-form .main-btn {
        font-size: 1.1rem;
        padding: 16px 20px;
    }
}

.login-form__button {
    position: relative;
    width: 100%;
    display: flex;
    justify-content: center;
}

.login-form__button .main-btn {
    width: 100%;
}

.login-form__tooltip {
    position: absolute;
    bottom: calc(100% + 10px);
    left: 50%;
    transform: translate(-50%, 4px);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    border-radius: 10px;
    background: rgb(69 84 133 / 95%);
    color: rgba(255, 255, 255, 0.92);
    font-size: 0.9rem;
    line-height: 1.3;
    letter-spacing: 0.03em;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    white-space: nowrap;
    z-index: 10;
}

.login-form__tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    width: 0;
    height: 0;
    border-width: 8px 8px 0 8px;
    border-style: solid;
    border-color: rgba(15, 19, 32, 0.95) transparent transparent transparent;
    transform: translateX(-50%);
}

.login-form__button[data-disabled="true"]:hover .login-form__tooltip,
.login-form__button[data-disabled="true"]:focus-within .login-form__tooltip {
    opacity: 1;
    transform: translate(-50%, -2px);
}

@media (max-width: 480px) {
    .login-form__tooltip {
        font-size: 0.8rem;
        padding: 8px 12px;
        white-space: normal;
        text-align: center;
        width: min(220px, 80vw);
    }
}