* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    background: #ffffff;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.login-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 28px 16px;
}

.login-container {
    width: 100%;
    max-width: 408px;
}

.login-banner {
    display: flex;
    justify-content: flex-start;
    margin-bottom: 14px;
}

.login-card {
    background: #ffffff;
    border-radius: 10px;
    padding: 42px 26px 38px;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.16), 0 4px 12px rgba(15, 23, 42, 0.08);
}

.login-logo {
    display: block;
    width: 184px;
    height: auto;
    margin: 0;
}

.login-title {
    font-size: 24px;
    font-weight: 500;
    line-height: 1.2;
    color: #475569;
    text-align: center;
    margin: 0 0 26px;
}

.login-form {
    width: 100%;
}

.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    font-weight: 500;
    color: #0f172a;
}

.form-group input {
    width: 100%;
    height: 48px;
    padding: 0 14px;
    border: 1px solid #d7dee6;
    border-radius: 4px;
    background: #ffffff;
    color: #334155;
    font-size: 13px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    -webkit-appearance: none;
    appearance: none;
}

.form-group input::placeholder {
    color: #7b8794;
}

.form-group input:focus {
    border-color: #1186a3;
    box-shadow: 0 0 0 3px rgba(17, 134, 163, 0.12);
}

.show-password {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    color: #334155;
    font-size: 13px;
    cursor: pointer;
    user-select: none;
}

.show-password input {
    width: 16px;
    height: 16px;
    accent-color: #1186a3;
    cursor: pointer;
}

.login-btn {
    width: 100%;
    height: 46px;
    border: none;
    border-radius: 4px;
    background: #2563eb;
    color: #ffffff;
    font-size: 12px;
    font-weight: 700;
    font-family: inherit;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    cursor: pointer;
    position: relative;
    transition: background 0.2s ease;
}

.login-btn:hover {
    background: #1d4ed8;
}

.login-btn:disabled {
    cursor: not-allowed;
    opacity: 0.75;
}

.login-btn .btn-text {
    transition: opacity 0.2s ease;
}

.login-btn.loading .btn-text {
    opacity: 0;
}

.login-btn .btn-spinner {
    position: absolute;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
}

.login-btn.loading .btn-spinner {
    display: flex;
}

.btn-spinner-inner {
    width: 22px;
    height: 22px;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@media (max-width: 720px) {
    .login-banner {
        margin-bottom: 12px;
    }

    .login-card {
        padding: 36px 22px 30px;
        box-shadow: 0 16px 34px rgba(15, 23, 42, 0.15), 0 4px 10px rgba(15, 23, 42, 0.07);
    }

    .login-logo {
        width: 162px;
    }

    .login-title {
        font-size: 22px;
        margin-bottom: 22px;
    }

    .form-group label {
        font-size: 13px;
    }

    .form-group input {
        height: 46px;
        padding: 0 14px;
        font-size: 13px;
    }

    .login-btn {
        height: 44px;
    }
}

@media (max-width: 480px) {
    .login-shell {
        padding: 16px;
    }

    .login-banner {
        margin-bottom: 10px;
    }

    .login-card {
        padding: 30px 16px 24px;
        border-radius: 8px;
        box-shadow: 0 14px 28px rgba(15, 23, 42, 0.14), 0 3px 8px rgba(15, 23, 42, 0.06);
    }

    .login-logo {
        width: 136px;
    }

    .login-title {
        font-size: 20px;
        margin-bottom: 18px;
    }

    .form-group {
        margin-bottom: 12px;
    }

    .form-group label {
        margin-bottom: 6px;
        font-size: 12px;
    }

    .form-group input {
        height: 42px;
        padding: 0 12px;
        font-size: 13px;
    }

    .show-password {
        margin-bottom: 18px;
        font-size: 12px;
    }

    .login-btn {
        height: 42px;
        font-size: 11px;
    }
}